{"title":"HyFLOW™ BMW ダウンパイプ","description":"\u003cp\u003eステンレス・チタン製のダウンパイプとミッドパイプを、BMWの型式・エンジン別にそろえたコレクション。\u003c\/p\u003e","products":[{"product_id":"hyflow-stainless-midpipe-bmw-g87-s58","title":"HYFLOW™ Stainless Single Mid-Pipe with Brace BMW M2 G87 (S58)","description":"\u003cdiv class=\"bm-product\"\u003e\n\n\u003cstyle\u003e\n.bm-product{--bm-text:#111;--bm-sub:#4a5159;--bm-line:rgba(0,0,0,.12);max-width:980px;margin:0 auto;padding:0 22px;font-family:system-ui,-apple-system,Segoe UI,Roboto;color:var(--bm-text);line-height:1.75;font-size:15.5px;}\n.bm-section{margin:48px 0;padding-top:24px;border-top:1px solid var(--bm-line);}\n.bm-section:first-child{border-top:none;margin-top:12px;padding-top:0;}\n.bm-sub{font-size:12.5px;letter-spacing:.14em;text-transform:uppercase;color:var(--bm-sub);margin-bottom:14px;}\n.bm-text{max-width:720px;color:var(--bm-sub);}\n.bm-list{list-style:none;padding:0;margin:0;}\n.bm-list li{padding:10px 0;border-bottom:1px solid var(--bm-line);color:var(--bm-sub);}\n.bm-list li strong{color:var(--bm-text);font-weight:500;}\n.bm-num{list-style:none;padding:0;margin:0;counter-reset:item;}\n.bm-num li{padding:10px 0;border-bottom:1px solid var(--bm-line);color:var(--bm-sub);counter-increment:item;}\n.bm-num li::before{content:counter(item) \".  \";color:var(--bm-text);font-weight:500;}\n.bm-num li ul{margin-top:8px;padding-left:18px;}\n.bm-num li ul li{padding:4px 0;border:none;}\n.bm-note{color:var(--bm-sub);font-size:13.5px;}\n.bm-emph{color:var(--bm-text);font-weight:500;}\n.bm-tbl{width:100%;border-collapse:collapse;font-size:14.5px;}\n.bm-tbl th{text-align:left;padding:10px 14px 10px 0;border-bottom:1px solid var(--bm-line);color:var(--bm-sub);font-size:12.5px;letter-spacing:.08em;font-weight:400;white-space:nowrap;}\n.bm-tbl td{padding:12px 14px 12px 0;border-bottom:1px solid var(--bm-line);color:var(--bm-sub);vertical-align:top;}\n.bm-tbl td:first-child{color:var(--bm-text);font-weight:500;white-space:nowrap;}\n.bm-tbl td:nth-child(2){white-space:nowrap;}\n.bm-here{color:var(--bm-text);font-weight:500;}\n.bm-tag{display:inline-block;font-size:11.5px;letter-spacing:.06em;padding:2px 8px;border:1px solid var(--bm-line);border-radius:3px;color:var(--bm-sub);margin-left:8px;vertical-align:middle;}\n\/* bm-responsive-tbl *\/\n@media (max-width:600px){\n.bm-product{padding:0 16px;font-size:15px;}\n.bm-tbl{font-size:14.5px;}\n.bm-tbl,.bm-tbl tbody,.bm-tbl tr,.bm-tbl td{display:block;width:100%;}\n.bm-tbl tr:first-child{display:none;}\n.bm-tbl tr{padding:14px 0 16px;border-bottom:1px solid var(--bm-line);}\n.bm-tbl tr:last-child{border-bottom:none;}\n.bm-tbl td{border:none;padding:3px 0;white-space:normal;}\n.bm-tbl td:first-child{white-space:normal;font-size:15.5px;padding-bottom:6px;}\n.bm-tbl td:nth-child(2){white-space:normal;}\n.bm-tbl td[data-l]::before{content:attr(data-l) \": \";color:var(--bm-sub);font-size:12.5px;letter-spacing:.04em;}\n.bm-tag{margin-left:6px;}\n}\n\u003c\/style\u003e\n\n\u003cdiv class=\"bm-section\"\u003e\n\u003cdiv class=\"bm-sub\"\u003eProduct Overview\u003c\/div\u003e\n\u003cp class=\"bm-text\"\u003eThe S58 is a 3.0L inline-6 twin-turbo engine. The factory mid-pipe is designed to meet quietness and emissions regulations, and\u003cspan class=\"bm-emph\"\u003eA structure that prioritises sound suppression over exhaust flow\u003c\/span\u003eis the case.\u003c\/p\u003e\n\u003cp class=\"bm-text\"\u003eThe HYFLOW™ single mid-pipe replaces this section with a single, wide-diameter path.\u003cspan class=\"bm-emph\"\u003eWith brace (reinforcement stay)\u003c\/span\u003eThis configuration keeps the flow path open while suppressing vibration from exhaust pulsation.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"bm-section\"\u003e\n\u003cdiv class=\"bm-sub\"\u003eWhat Changes with a Downpipe\u003c\/div\u003e\n\u003cp class=\"bm-text\"\u003eExhaust flows in the order turbo → downpipe → mid-pipe → silencer. \u003cspan class=\"bm-emph\"\u003eThe downpipe sits immediately after the turbo\u003c\/span\u003e, where exhaust gas passes through at its highest temperature and pressure in this part of the system.\u003c\/p\u003e\n\u003cul class=\"bm-list\"\u003e\n\u003cli\u003e\n\u003cstrong\u003eReduced back pressure\u003c\/strong\u003e: pressure downstream of the turbine drops. Since the turbine spins on the momentum of the exhaust gas, the lighter the load on the outlet side, the faster it spools up\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBoost response\u003c\/strong\u003e: Turbo lag — the time between pressing the accelerator and boost coming on — is shortened. What you feel is less about peak output and more about\u003cspan class=\"bm-emph\"\u003eSharper mid-range acceleration\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eExhaust note\u003c\/strong\u003e: the factory downpipe also contributes to silencing, so replacing it changes both volume and character. The low end gains body, and high in the rev range you get a metallic edge that carries\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"bm-note\"\u003eWhile an exhaust swap changes the sound at the exit, a downpipe \u003cspan class=\"bm-emph\"\u003echanges the flow from the point closest to the engine\u003c\/span\u003e. Combine the two, and each moves into territory that neither reaches on its own.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"bm-section\"\u003e\n\u003cdiv class=\"bm-sub\"\u003eCombined with ECU tuning\u003c\/div\u003e\n\u003cp class=\"bm-text\"\u003eReplacing the downpipe improves exhaust flow, but\u003cspan class=\"bm-emph\"\u003eThis alone does not produce a major increase in output\u003c\/span\u003e. This is because the factory ECU controls boost pressure and ignition timing on the assumption of a factory exhaust, so changing only the hardware doesn't let the control system keep up.\u003c\/p\u003e\n\u003cp class=\"bm-text\"\u003eA downpipe shows its full potential \u003cspan class=\"bm-emph\"\u003ewhen combined with ECU tuning\u003c\/span\u003e. Improved flow lets boost pressure be raised to match, and only then does it show up as a measurable gain in output.\u003c\/p\u003e\n\u003cp class=\"bm-note\"\u003eA downpipe on its own changes both how quickly boost builds and how the car sounds. The honest way to put it: you will feel a difference, but output depends on the tune.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"bm-section\"\u003e\n\u003cdiv class=\"bm-sub\"\u003ePairing with the S58\u003c\/div\u003e\n\u003cp class=\"bm-text\"\u003eThe S58 uses two turbines, each serving three cylinders.\u003cspan class=\"bm-emph\"\u003eHaving two turbos means having two downpipes as well\u003c\/span\u003eFor this reason, changing only one side halves the effect. This product is configured as a matched left-and-right pair.\u003cbr\u003e\u003cbr\u003eAlso, an straight-six has evenly spaced firing intervals, so the exhaust pulses line up regularly. This regularity pays off once the flow path is refined, and\u003cspan class=\"bm-emph\"\u003eThe Benefit of Building a Free-Flowing Exhaust for an Straight-Six\u003c\/span\u003eis exactly this.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"bm-section\"\u003e\n\u003cdiv class=\"bm-sub\"\u003eStandard specification\u003c\/div\u003e\n\u003cul class=\"bm-list\"\u003e\n\u003cli\u003e\n\u003cstrong\u003eConfiguration\u003c\/strong\u003e: Single mid-pipe (with brace)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBase material\u003c\/strong\u003e: Stainless steel\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompatible Engines\u003c\/strong\u003e: S58\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstallation\u003c\/strong\u003e: A bolt-on design for the factory mounting points\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"bm-note\"\u003eMaterial grades, pipe diameters and manufacturing details will be added to this page as soon as we have confirmed them with our supplier. Only the specifications we have verified are listed here.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"bm-section\"\u003e\n\u003cdiv class=\"bm-sub\"\u003eFitment\u003c\/div\u003e\n\u003cp class=\"bm-text\"\u003e\u003cstrong class=\"bm-emph\"\u003eBMW M2 G87 (S58)\u003c\/strong\u003ePurpose-built design. Depending on the year, grade, and modification history, adjustment may be needed at installation — please contact us before purchase if you have any questions.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"bm-section\"\u003e\n\u003cdiv class=\"bm-sub\"\u003ePricing and Shipping\u003c\/div\u003e\n\u003cp class=\"bm-text\"\u003eThe listed price \u003cspan class=\"bm-emph\"\u003eincludes shipping, customs duties and customs clearance fees\u003c\/span\u003e. There are no additional costs after the product arrives.\u003c\/p\u003e\n\u003cp class=\"bm-text\"\u003eThis product includes\u003cspan class=\"bm-emph\"\u003eCarries no brand logo engraving\u003c\/span\u003e. Taking the cost of logo work out of the production cost is what feeds back into the price. Nothing that affects performance — material, welding, finishing — has been cut.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"bm-section\"\u003e\n\u003cdiv class=\"bm-sub\"\u003eAfter Your Purchase\u003c\/div\u003e\n\u003cp class=\"bm-text\"\u003eAfter your purchase, please send us your \u003cspan class=\"bm-emph\"\u003evehicle model, year and VIN\u003c\/span\u003e via our contact form. Contacting us is required so we can identify your exact model.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"bm-section\"\u003e\n\u003cdiv class=\"bm-sub\"\u003eAbout Installation\u003c\/div\u003e\n\u003cp class=\"bm-text\"\u003eRemoving and installing the downpipe requires a lift and specialised tools. As it sits in a high-heat area right after the turbo,\u003cspan class=\"bm-emph\"\u003eWe strongly recommend installation at a garage or professional shop\u003c\/span\u003ewe will do so.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"bm-section\"\u003e\n\u003cdiv class=\"bm-sub\"\u003eWarranty\u003c\/div\u003e\n\u003cp class=\"bm-text\"\u003eFrom the day of delivery\u003cspan class=\"bm-emph\"\u003eOne year\u003c\/span\u003edefects caused by the product itself (welding faults, material faults, dimensional faults) will be replaced free of charge.\u003cspan class=\"bm-emph\"\u003eShipping costs for both the return and the replacement are covered by us\u003c\/span\u003ewe will do so.\u003c\/p\u003e\n\u003cp class=\"bm-note\"\u003e- Damage caused by installation work, normal wear from driving, and issues arising from combination with other manufacturers' products are not covered by the warranty.\u003cbr\u003e- When making a claim, please send us your VIN and photos of the affected area.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"bm-section\"\u003e\n\u003cdiv class=\"bm-sub\"\u003eAbout Lead Time\u003c\/div\u003e\n\u003cp class=\"bm-text\"\u003eAs these are built to order, dispatch normally takes \u003cspan class=\"bm-emph\"\u003e2–4 weeks\u003c\/span\u003e after order confirmationThis is the required lead time. Depending on production and logistics conditions, delivery may take longer than stated. If you're in a hurry, please contact us before purchasing.\u003c\/p\u003e\n\u003cp class=\"bm-note\"\u003e- Depending on the vehicle's condition, year, and modification history, additional adjustment may be required at installation.\u003cbr\u003e- Weld discolouration and finish may vary slightly between units.\u003cbr\u003e- Exhaust parts are wear items. Please check regularly for exhaust leaks.\u003c\/p\u003e\n\u003cp class=\"bm-note\"\u003eBMW is a registered trademark of BMW AG. This is an aftermarket part and is neither manufactured by nor affiliated with BMW AG.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003c\/div\u003e","brand":"BIMMER+","offers":[{"title":"Default Title","offer_id":49484141297891,"sku":"BMP-DP-G87-001","price":142800.0,"currency_code":"JPY","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0777\/9457\/4563\/files\/hyflow-stainless-midpipe-bmw-g87-s58-img1_shopify_1e49aab2-c10c-4afe-be4d-9a4bf1d3f49d.jpg?v=1785602488"},{"product_id":"hyflow-stainless-downpipe-bmw-e82-e88-e90-e91-n54","title":"HYFLOW™ Stainless Downpipe BMW 135i E82\/E87 \/ 335i E90-E92 (N54)","description":"\u003cdiv class=\"bm-product\"\u003e\n\n\u003cstyle\u003e\n.bm-product{--bm-text:#111;--bm-sub:#4a5159;--bm-line:rgba(0,0,0,.12);max-width:980px;margin:0 auto;padding:0 22px;font-family:system-ui,-apple-system,Segoe UI,Roboto;color:var(--bm-text);line-height:1.75;font-size:15.5px;}\n.bm-section{margin:48px 0;padding-top:24px;border-top:1px solid var(--bm-line);}\n.bm-section:first-child{border-top:none;margin-top:12px;padding-top:0;}\n.bm-sub{font-size:12.5px;letter-spacing:.14em;text-transform:uppercase;color:var(--bm-sub);margin-bottom:14px;}\n.bm-text{max-width:720px;color:var(--bm-sub);}\n.bm-list{list-style:none;padding:0;margin:0;}\n.bm-list li{padding:10px 0;border-bottom:1px solid var(--bm-line);color:var(--bm-sub);}\n.bm-list li strong{color:var(--bm-text);font-weight:500;}\n.bm-num{list-style:none;padding:0;margin:0;counter-reset:item;}\n.bm-num li{padding:10px 0;border-bottom:1px solid var(--bm-line);color:var(--bm-sub);counter-increment:item;}\n.bm-num li::before{content:counter(item) \".  \";color:var(--bm-text);font-weight:500;}\n.bm-num li ul{margin-top:8px;padding-left:18px;}\n.bm-num li ul li{padding:4px 0;border:none;}\n.bm-note{color:var(--bm-sub);font-size:13.5px;}\n.bm-emph{color:var(--bm-text);font-weight:500;}\n.bm-tbl{width:100%;border-collapse:collapse;font-size:14.5px;}\n.bm-tbl th{text-align:left;padding:10px 14px 10px 0;border-bottom:1px solid var(--bm-line);color:var(--bm-sub);font-size:12.5px;letter-spacing:.08em;font-weight:400;white-space:nowrap;}\n.bm-tbl td{padding:12px 14px 12px 0;border-bottom:1px solid var(--bm-line);color:var(--bm-sub);vertical-align:top;}\n.bm-tbl td:first-child{color:var(--bm-text);font-weight:500;white-space:nowrap;}\n.bm-tbl td:nth-child(2){white-space:nowrap;}\n.bm-here{color:var(--bm-text);font-weight:500;}\n.bm-tag{display:inline-block;font-size:11.5px;letter-spacing:.06em;padding:2px 8px;border:1px solid var(--bm-line);border-radius:3px;color:var(--bm-sub);margin-left:8px;vertical-align:middle;}\n\/* bm-responsive-tbl *\/\n@media (max-width:600px){\n.bm-product{padding:0 16px;font-size:15px;}\n.bm-tbl{font-size:14.5px;}\n.bm-tbl,.bm-tbl tbody,.bm-tbl tr,.bm-tbl td{display:block;width:100%;}\n.bm-tbl tr:first-child{display:none;}\n.bm-tbl tr{padding:14px 0 16px;border-bottom:1px solid var(--bm-line);}\n.bm-tbl tr:last-child{border-bottom:none;}\n.bm-tbl td{border:none;padding:3px 0;white-space:normal;}\n.bm-tbl td:first-child{white-space:normal;font-size:15.5px;padding-bottom:6px;}\n.bm-tbl td:nth-child(2){white-space:normal;}\n.bm-tbl td[data-l]::before{content:attr(data-l) \": \";color:var(--bm-sub);font-size:12.5px;letter-spacing:.04em;}\n.bm-tag{margin-left:6px;}\n}\n\u003c\/style\u003e\n\n\u003cdiv class=\"bm-section\"\u003e\n\u003cdiv class=\"bm-sub\"\u003eProduct Overview\u003c\/div\u003e\n\u003cp class=\"bm-text\"\u003eThe N54 is a 3.0L inline-6 twin-turbo engine. The factory downpipe is structured to meet emissions regulations and quietness, and\u003cspan class=\"bm-emph\"\u003ethe point of greatest resistance in the exhaust flow\u003c\/span\u003eThis is that point. Because it comes right after the turbo, losses here directly affect boost response.\u003c\/p\u003e\n\u003cp class=\"bm-text\"\u003eThe HYFLOW™ downpipe reworks the flow path to secure clean flow from the turbo outlet.\u003cspan class=\"bm-emph\"\u003eWhen back pressure drops, the turbine begins spinning more freely\u003c\/span\u003e, throttle response becomes sharper.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"bm-section\"\u003e\n\u003cdiv class=\"bm-sub\"\u003eWhat Changes with a Downpipe\u003c\/div\u003e\n\u003cp class=\"bm-text\"\u003eExhaust flows in the order turbo → downpipe → mid-pipe → silencer. \u003cspan class=\"bm-emph\"\u003eThe downpipe sits immediately after the turbo\u003c\/span\u003e, where exhaust gas passes through at its highest temperature and pressure in this part of the system.\u003c\/p\u003e\n\u003cul class=\"bm-list\"\u003e\n\u003cli\u003e\n\u003cstrong\u003eReduced back pressure\u003c\/strong\u003e: pressure downstream of the turbine drops. Since the turbine spins on the momentum of the exhaust gas, the lighter the load on the outlet side, the faster it spools up\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBoost response\u003c\/strong\u003e: Turbo lag — the time between pressing the accelerator and boost coming on — is shortened. What you feel is less about peak output and more about\u003cspan class=\"bm-emph\"\u003eSharper mid-range acceleration\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eExhaust note\u003c\/strong\u003e: the factory downpipe also contributes to silencing, so replacing it changes both volume and character. The low end gains body, and high in the rev range you get a metallic edge that carries\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"bm-note\"\u003eWhile an exhaust swap changes the sound at the exit, a downpipe \u003cspan class=\"bm-emph\"\u003echanges the flow from the point closest to the engine\u003c\/span\u003e. Combine the two, and each moves into territory that neither reaches on its own.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"bm-section\"\u003e\n\u003cdiv class=\"bm-sub\"\u003eCombined with ECU tuning\u003c\/div\u003e\n\u003cp class=\"bm-text\"\u003eReplacing the downpipe improves exhaust flow, but\u003cspan class=\"bm-emph\"\u003eThis alone does not produce a major increase in output\u003c\/span\u003e. This is because the factory ECU controls boost pressure and ignition timing on the assumption of a factory exhaust, so changing only the hardware doesn't let the control system keep up.\u003c\/p\u003e\n\u003cp class=\"bm-text\"\u003eA downpipe shows its full potential \u003cspan class=\"bm-emph\"\u003ewhen combined with ECU tuning\u003c\/span\u003e. Improved flow lets boost pressure be raised to match, and only then does it show up as a measurable gain in output.\u003c\/p\u003e\n\u003cp class=\"bm-note\"\u003eA downpipe on its own changes both how quickly boost builds and how the car sounds. The honest way to put it: you will feel a difference, but output depends on the tune.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"bm-section\"\u003e\n\u003cdiv class=\"bm-sub\"\u003eCombination with the N54\u003c\/div\u003e\n\u003cp class=\"bm-text\"\u003eThe N54 was BMW's first-generation straight-six twin-turbo, and\u003cspan class=\"bm-emph\"\u003eKnown for its strong tuning potential\u003c\/span\u003eThis is the type of engine. Reducing resistance on the exhaust side directly improves boost response.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"bm-section\"\u003e\n\u003cdiv class=\"bm-sub\"\u003eStandard specification\u003c\/div\u003e\n\u003cul class=\"bm-list\"\u003e\n\u003cli\u003e\n\u003cstrong\u003eConfiguration\u003c\/strong\u003e: Downpipe\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBase material\u003c\/strong\u003e: Stainless steel\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompatible Engines\u003c\/strong\u003e: N54\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstallation\u003c\/strong\u003e: A bolt-on design for the factory mounting points\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"bm-note\"\u003eMaterial grades, pipe diameters and manufacturing details will be added to this page as soon as we have confirmed them with our supplier. Only the specifications we have verified are listed here.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"bm-section\"\u003e\n\u003cdiv class=\"bm-sub\"\u003eFitment\u003c\/div\u003e\n\u003cp class=\"bm-text\"\u003e\u003cstrong class=\"bm-emph\"\u003eBMW 135i E82\/E87 \/ 335i E90-E92 (N54)\u003c\/strong\u003ePurpose-built design. Depending on the year, grade, and modification history, adjustment may be needed at installation — please contact us before purchase if you have any questions.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"bm-section\"\u003e\n\u003cdiv class=\"bm-sub\"\u003ePricing and Shipping\u003c\/div\u003e\n\u003cp class=\"bm-text\"\u003eThe listed price \u003cspan class=\"bm-emph\"\u003eincludes shipping, customs duties and customs clearance fees\u003c\/span\u003e. There are no additional costs after the product arrives.\u003c\/p\u003e\n\u003cp class=\"bm-text\"\u003eThis product includes\u003cspan class=\"bm-emph\"\u003eCarries no brand logo engraving\u003c\/span\u003e. Taking the cost of logo work out of the production cost is what feeds back into the price. Nothing that affects performance — material, welding, finishing — has been cut.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"bm-section\"\u003e\n\u003cdiv class=\"bm-sub\"\u003eAfter Your Purchase\u003c\/div\u003e\n\u003cp class=\"bm-text\"\u003eAfter your purchase, please send us your \u003cspan class=\"bm-emph\"\u003evehicle model, year and VIN\u003c\/span\u003e via our contact form. Contacting us is required so we can identify your exact model.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"bm-section\"\u003e\n\u003cdiv class=\"bm-sub\"\u003eAbout Installation\u003c\/div\u003e\n\u003cp class=\"bm-text\"\u003eRemoving and installing the downpipe requires a lift and specialised tools. As it sits in a high-heat area right after the turbo,\u003cspan class=\"bm-emph\"\u003eWe strongly recommend installation at a garage or professional shop\u003c\/span\u003ewe will do so.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"bm-section\"\u003e\n\u003cdiv class=\"bm-sub\"\u003eWarranty\u003c\/div\u003e\n\u003cp class=\"bm-text\"\u003eFrom the day of delivery\u003cspan class=\"bm-emph\"\u003eOne year\u003c\/span\u003edefects caused by the product itself (welding faults, material faults, dimensional faults) will be replaced free of charge.\u003cspan class=\"bm-emph\"\u003eShipping costs for both the return and the replacement are covered by us\u003c\/span\u003ewe will do so.\u003c\/p\u003e\n\u003cp class=\"bm-note\"\u003e- Damage caused by installation work, normal wear from driving, and issues arising from combination with other manufacturers' products are not covered by the warranty.\u003cbr\u003e- When making a claim, please send us your VIN and photos of the affected area.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"bm-section\"\u003e\n\u003cdiv class=\"bm-sub\"\u003eAbout Lead Time\u003c\/div\u003e\n\u003cp class=\"bm-text\"\u003eAs these are built to order, dispatch normally takes \u003cspan class=\"bm-emph\"\u003e2–4 weeks\u003c\/span\u003e after order confirmationThis is the required lead time. Depending on production and logistics conditions, delivery may take longer than stated. If you're in a hurry, please contact us before purchasing.\u003c\/p\u003e\n\u003cp class=\"bm-note\"\u003e- Depending on the vehicle's condition, year, and modification history, additional adjustment may be required at installation.\u003cbr\u003e- Weld discolouration and finish may vary slightly between units.\u003cbr\u003e- Exhaust parts are wear items. Please check regularly for exhaust leaks.\u003c\/p\u003e\n\u003cp class=\"bm-note\"\u003eBMW is a registered trademark of BMW AG. This is an aftermarket part and is neither manufactured by nor affiliated with BMW AG.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003c\/div\u003e","brand":"BIMMER+","offers":[{"title":"Default Title","offer_id":49484141592803,"sku":"BMP-DP-E82-001","price":59800.0,"currency_code":"JPY","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0777\/9457\/4563\/files\/hyflow-stainless-downpipe-bmw-e82-e88-e90-e91-n54-img1_shopify_a530d9e5-d93a-4e2d-b897-cb05d97db114.jpg?v=1785602494"},{"product_id":"hyflow-stainless-downpipe-bmw-f10-f12-f13-f06-s63","title":"HYFLOW™ Stainless Downpipe BMW M5 F10 \/ M6 F12\/F13 (S63)","description":"\u003cdiv class=\"bm-product\"\u003e\n\n\u003cstyle\u003e\n.bm-product{--bm-text:#111;--bm-sub:#4a5159;--bm-line:rgba(0,0,0,.12);max-width:980px;margin:0 auto;padding:0 22px;font-family:system-ui,-apple-system,Segoe UI,Roboto;color:var(--bm-text);line-height:1.75;font-size:15.5px;}\n.bm-section{margin:48px 0;padding-top:24px;border-top:1px solid var(--bm-line);}\n.bm-section:first-child{border-top:none;margin-top:12px;padding-top:0;}\n.bm-sub{font-size:12.5px;letter-spacing:.14em;text-transform:uppercase;color:var(--bm-sub);margin-bottom:14px;}\n.bm-text{max-width:720px;color:var(--bm-sub);}\n.bm-list{list-style:none;padding:0;margin:0;}\n.bm-list li{padding:10px 0;border-bottom:1px solid var(--bm-line);color:var(--bm-sub);}\n.bm-list li strong{color:var(--bm-text);font-weight:500;}\n.bm-num{list-style:none;padding:0;margin:0;counter-reset:item;}\n.bm-num li{padding:10px 0;border-bottom:1px solid var(--bm-line);color:var(--bm-sub);counter-increment:item;}\n.bm-num li::before{content:counter(item) \".  \";color:var(--bm-text);font-weight:500;}\n.bm-num li ul{margin-top:8px;padding-left:18px;}\n.bm-num li ul li{padding:4px 0;border:none;}\n.bm-note{color:var(--bm-sub);font-size:13.5px;}\n.bm-emph{color:var(--bm-text);font-weight:500;}\n.bm-tbl{width:100%;border-collapse:collapse;font-size:14.5px;}\n.bm-tbl th{text-align:left;padding:10px 14px 10px 0;border-bottom:1px solid var(--bm-line);color:var(--bm-sub);font-size:12.5px;letter-spacing:.08em;font-weight:400;white-space:nowrap;}\n.bm-tbl td{padding:12px 14px 12px 0;border-bottom:1px solid var(--bm-line);color:var(--bm-sub);vertical-align:top;}\n.bm-tbl td:first-child{color:var(--bm-text);font-weight:500;white-space:nowrap;}\n.bm-tbl td:nth-child(2){white-space:nowrap;}\n.bm-here{color:var(--bm-text);font-weight:500;}\n.bm-tag{display:inline-block;font-size:11.5px;letter-spacing:.06em;padding:2px 8px;border:1px solid var(--bm-line);border-radius:3px;color:var(--bm-sub);margin-left:8px;vertical-align:middle;}\n\/* bm-responsive-tbl *\/\n@media (max-width:600px){\n.bm-product{padding:0 16px;font-size:15px;}\n.bm-tbl{font-size:14.5px;}\n.bm-tbl,.bm-tbl tbody,.bm-tbl tr,.bm-tbl td{display:block;width:100%;}\n.bm-tbl tr:first-child{display:none;}\n.bm-tbl tr{padding:14px 0 16px;border-bottom:1px solid var(--bm-line);}\n.bm-tbl tr:last-child{border-bottom:none;}\n.bm-tbl td{border:none;padding:3px 0;white-space:normal;}\n.bm-tbl td:first-child{white-space:normal;font-size:15.5px;padding-bottom:6px;}\n.bm-tbl td:nth-child(2){white-space:normal;}\n.bm-tbl td[data-l]::before{content:attr(data-l) \": \";color:var(--bm-sub);font-size:12.5px;letter-spacing:.04em;}\n.bm-tag{margin-left:6px;}\n}\n\u003c\/style\u003e\n\n\u003cdiv class=\"bm-section\"\u003e\n\u003cdiv class=\"bm-sub\"\u003eProduct Overview\u003c\/div\u003e\n\u003cp class=\"bm-text\"\u003ethe factory downpipe is structured to meet emissions regulations and noise requirements, and\u003cspan class=\"bm-emph\"\u003ethe point of greatest resistance in the exhaust flow\u003c\/span\u003eThis is that point. Because it comes right after the turbo, losses here directly affect boost response.\u003c\/p\u003e\n\u003cp class=\"bm-text\"\u003eThe HYFLOW™ downpipe reworks the flow path to secure clean flow from the turbo outlet.\u003cspan class=\"bm-emph\"\u003eWhen back pressure drops, the turbine begins spinning more freely\u003c\/span\u003e, throttle response becomes sharper.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"bm-section\"\u003e\n\u003cdiv class=\"bm-sub\"\u003eWhat Changes with a Downpipe\u003c\/div\u003e\n\u003cp class=\"bm-text\"\u003eExhaust flows in the order turbo → downpipe → mid-pipe → silencer. \u003cspan class=\"bm-emph\"\u003eThe downpipe sits immediately after the turbo\u003c\/span\u003e, where exhaust gas passes through at its highest temperature and pressure in this part of the system.\u003c\/p\u003e\n\u003cul class=\"bm-list\"\u003e\n\u003cli\u003e\n\u003cstrong\u003eReduced back pressure\u003c\/strong\u003e: pressure downstream of the turbine drops. Since the turbine spins on the momentum of the exhaust gas, the lighter the load on the outlet side, the faster it spools up\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBoost response\u003c\/strong\u003e: Turbo lag — the time between pressing the accelerator and boost coming on — is shortened. What you feel is less about peak output and more about\u003cspan class=\"bm-emph\"\u003eSharper mid-range acceleration\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eExhaust note\u003c\/strong\u003e: the factory downpipe also contributes to silencing, so replacing it changes both volume and character. The low end gains body, and high in the rev range you get a metallic edge that carries\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"bm-note\"\u003eWhile an exhaust swap changes the sound at the exit, a downpipe \u003cspan class=\"bm-emph\"\u003echanges the flow from the point closest to the engine\u003c\/span\u003e. Combine the two, and each moves into territory that neither reaches on its own.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"bm-section\"\u003e\n\u003cdiv class=\"bm-sub\"\u003eCombined with ECU tuning\u003c\/div\u003e\n\u003cp class=\"bm-text\"\u003eReplacing the downpipe improves exhaust flow, but\u003cspan class=\"bm-emph\"\u003eThis alone does not produce a major increase in output\u003c\/span\u003e. This is because the factory ECU controls boost pressure and ignition timing on the assumption of a factory exhaust, so changing only the hardware doesn't let the control system keep up.\u003c\/p\u003e\n\u003cp class=\"bm-text\"\u003eA downpipe shows its full potential \u003cspan class=\"bm-emph\"\u003ewhen combined with ECU tuning\u003c\/span\u003e. Improved flow lets boost pressure be raised to match, and only then does it show up as a measurable gain in output.\u003c\/p\u003e\n\u003cp class=\"bm-note\"\u003eA downpipe on its own changes both how quickly boost builds and how the car sounds. The honest way to put it: you will feel a difference, but output depends on the tune.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"bm-section\"\u003e\n\u003cdiv class=\"bm-sub\"\u003eStandard specification\u003c\/div\u003e\n\u003cul class=\"bm-list\"\u003e\n\u003cli\u003e\n\u003cstrong\u003eConfiguration\u003c\/strong\u003e: Downpipe\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBase material\u003c\/strong\u003e: Stainless steel\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstallation\u003c\/strong\u003e: A bolt-on design for the factory mounting points\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"bm-note\"\u003eMaterial grades, pipe diameters and manufacturing details will be added to this page as soon as we have confirmed them with our supplier. Only the specifications we have verified are listed here.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"bm-section\"\u003e\n\u003cdiv class=\"bm-sub\"\u003eFitment\u003c\/div\u003e\n\u003cp class=\"bm-text\"\u003e\u003cstrong class=\"bm-emph\"\u003eBMW M5 F10 \/ M6 F12\/F13 (S63)\u003c\/strong\u003ePurpose-built design. Depending on the year, grade, and modification history, adjustment may be needed at installation — please contact us before purchase if you have any questions.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"bm-section\"\u003e\n\u003cdiv class=\"bm-sub\"\u003ePricing and Shipping\u003c\/div\u003e\n\u003cp class=\"bm-text\"\u003eThe listed price \u003cspan class=\"bm-emph\"\u003eincludes shipping, customs duties and customs clearance fees\u003c\/span\u003e. There are no additional costs after the product arrives.\u003c\/p\u003e\n\u003cp class=\"bm-text\"\u003eThis product includes\u003cspan class=\"bm-emph\"\u003eCarries no brand logo engraving\u003c\/span\u003e. Taking the cost of logo work out of the production cost is what feeds back into the price. Nothing that affects performance — material, welding, finishing — has been cut.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"bm-section\"\u003e\n\u003cdiv class=\"bm-sub\"\u003eAfter Your Purchase\u003c\/div\u003e\n\u003cp class=\"bm-text\"\u003eAfter your purchase, please send us your \u003cspan class=\"bm-emph\"\u003evehicle model, year and VIN\u003c\/span\u003e via our contact form. Contacting us is required so we can identify your exact model.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"bm-section\"\u003e\n\u003cdiv class=\"bm-sub\"\u003eAbout Installation\u003c\/div\u003e\n\u003cp class=\"bm-text\"\u003eRemoving and installing the downpipe requires a lift and specialised tools. As it sits in a high-heat area right after the turbo,\u003cspan class=\"bm-emph\"\u003eWe strongly recommend installation at a garage or professional shop\u003c\/span\u003ewe will do so.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"bm-section\"\u003e\n\u003cdiv class=\"bm-sub\"\u003eWarranty\u003c\/div\u003e\n\u003cp class=\"bm-text\"\u003eFrom the day of delivery\u003cspan class=\"bm-emph\"\u003eOne year\u003c\/span\u003edefects caused by the product itself (welding faults, material faults, dimensional faults) will be replaced free of charge.\u003cspan class=\"bm-emph\"\u003eShipping costs for both the return and the replacement are covered by us\u003c\/span\u003ewe will do so.\u003c\/p\u003e\n\u003cp class=\"bm-note\"\u003e- Damage caused by installation work, normal wear from driving, and issues arising from combination with other manufacturers' products are not covered by the warranty.\u003cbr\u003e- When making a claim, please send us your VIN and photos of the affected area.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"bm-section\"\u003e\n\u003cdiv class=\"bm-sub\"\u003eAbout Lead Time\u003c\/div\u003e\n\u003cp class=\"bm-text\"\u003eAs these are built to order, dispatch normally takes \u003cspan class=\"bm-emph\"\u003e2–4 weeks\u003c\/span\u003e after order confirmationThis is the required lead time. Depending on production and logistics conditions, delivery may take longer than stated. If you're in a hurry, please contact us before purchasing.\u003c\/p\u003e\n\u003cp class=\"bm-note\"\u003e- Depending on the vehicle's condition, year, and modification history, additional adjustment may be required at installation.\u003cbr\u003e- Weld discolouration and finish may vary slightly between units.\u003cbr\u003e- Exhaust parts are wear items. Please check regularly for exhaust leaks.\u003c\/p\u003e\n\u003cp class=\"bm-note\"\u003eBMW is a registered trademark of BMW AG. This is an aftermarket part and is neither manufactured by nor affiliated with BMW AG.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003c\/div\u003e","brand":"BIMMER+","offers":[{"title":"Default Title","offer_id":49484141691107,"sku":"BMP-DP-F10-001","price":76800.0,"currency_code":"JPY","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0777\/9457\/4563\/files\/hyflow-stainless-downpipe-bmw-f10-f12-f13-f06-s63-img1_shopify_c19115d0-8e67-4f1e-a0c5-2fce0d08c3cf.jpg?v=1785602500"},{"product_id":"hyflow-stainless-downpipe-bmw-f90-f91-f92-f93-s63m","title":"HYFLOW™ Stainless Downpipe BMW M5 F90 \/ M8 F91-F93 (S63M)","description":"\u003cdiv class=\"bm-product\"\u003e\n\n\u003cstyle\u003e\n.bm-product{--bm-text:#111;--bm-sub:#4a5159;--bm-line:rgba(0,0,0,.12);max-width:980px;margin:0 auto;padding:0 22px;font-family:system-ui,-apple-system,Segoe UI,Roboto;color:var(--bm-text);line-height:1.75;font-size:15.5px;}\n.bm-section{margin:48px 0;padding-top:24px;border-top:1px solid var(--bm-line);}\n.bm-section:first-child{border-top:none;margin-top:12px;padding-top:0;}\n.bm-sub{font-size:12.5px;letter-spacing:.14em;text-transform:uppercase;color:var(--bm-sub);margin-bottom:14px;}\n.bm-text{max-width:720px;color:var(--bm-sub);}\n.bm-list{list-style:none;padding:0;margin:0;}\n.bm-list li{padding:10px 0;border-bottom:1px solid var(--bm-line);color:var(--bm-sub);}\n.bm-list li strong{color:var(--bm-text);font-weight:500;}\n.bm-num{list-style:none;padding:0;margin:0;counter-reset:item;}\n.bm-num li{padding:10px 0;border-bottom:1px solid var(--bm-line);color:var(--bm-sub);counter-increment:item;}\n.bm-num li::before{content:counter(item) \".  \";color:var(--bm-text);font-weight:500;}\n.bm-num li ul{margin-top:8px;padding-left:18px;}\n.bm-num li ul li{padding:4px 0;border:none;}\n.bm-note{color:var(--bm-sub);font-size:13.5px;}\n.bm-emph{color:var(--bm-text);font-weight:500;}\n.bm-tbl{width:100%;border-collapse:collapse;font-size:14.5px;}\n.bm-tbl th{text-align:left;padding:10px 14px 10px 0;border-bottom:1px solid var(--bm-line);color:var(--bm-sub);font-size:12.5px;letter-spacing:.08em;font-weight:400;white-space:nowrap;}\n.bm-tbl td{padding:12px 14px 12px 0;border-bottom:1px solid var(--bm-line);color:var(--bm-sub);vertical-align:top;}\n.bm-tbl td:first-child{color:var(--bm-text);font-weight:500;white-space:nowrap;}\n.bm-tbl td:nth-child(2){white-space:nowrap;}\n.bm-here{color:var(--bm-text);font-weight:500;}\n.bm-tag{display:inline-block;font-size:11.5px;letter-spacing:.06em;padding:2px 8px;border:1px solid var(--bm-line);border-radius:3px;color:var(--bm-sub);margin-left:8px;vertical-align:middle;}\n\/* bm-responsive-tbl *\/\n@media (max-width:600px){\n.bm-product{padding:0 16px;font-size:15px;}\n.bm-tbl{font-size:14.5px;}\n.bm-tbl,.bm-tbl tbody,.bm-tbl tr,.bm-tbl td{display:block;width:100%;}\n.bm-tbl tr:first-child{display:none;}\n.bm-tbl tr{padding:14px 0 16px;border-bottom:1px solid var(--bm-line);}\n.bm-tbl tr:last-child{border-bottom:none;}\n.bm-tbl td{border:none;padding:3px 0;white-space:normal;}\n.bm-tbl td:first-child{white-space:normal;font-size:15.5px;padding-bottom:6px;}\n.bm-tbl td:nth-child(2){white-space:normal;}\n.bm-tbl td[data-l]::before{content:attr(data-l) \": \";color:var(--bm-sub);font-size:12.5px;letter-spacing:.04em;}\n.bm-tag{margin-left:6px;}\n}\n\u003c\/style\u003e\n\n\u003cdiv class=\"bm-section\"\u003e\n\u003cdiv class=\"bm-sub\"\u003eProduct Overview\u003c\/div\u003e\n\u003cp class=\"bm-text\"\u003eThe S63M (S63B44T4) is a 4.4-litre twin-turbo V8. The factory downpipe is built to meet emissions regulations and noise targets, and \u003cspan class=\"bm-emph\"\u003ethe point of greatest resistance in the exhaust flow\u003c\/span\u003eThis is that point. Because it comes right after the turbo, losses here directly affect boost response.\u003c\/p\u003e\n\u003cp class=\"bm-text\"\u003eThe HYFLOW™ downpipe reworks the flow path to secure clean flow from the turbo outlet.\u003cspan class=\"bm-emph\"\u003eWhen back pressure drops, the turbine begins spinning more freely\u003c\/span\u003e, throttle response becomes sharper.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"bm-section\"\u003e\n\u003cdiv class=\"bm-sub\"\u003eWhat Changes with a Downpipe\u003c\/div\u003e\n\u003cp class=\"bm-text\"\u003eExhaust flows in the order turbo → downpipe → mid-pipe → silencer. \u003cspan class=\"bm-emph\"\u003eThe downpipe sits immediately after the turbo\u003c\/span\u003e, where exhaust gas passes through at its highest temperature and pressure in this part of the system.\u003c\/p\u003e\n\u003cul class=\"bm-list\"\u003e\n\u003cli\u003e\n\u003cstrong\u003eReduced back pressure\u003c\/strong\u003e: pressure downstream of the turbine drops. Since the turbine spins on the momentum of the exhaust gas, the lighter the load on the outlet side, the faster it spools up\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBoost response\u003c\/strong\u003e: Turbo lag — the time between pressing the accelerator and boost coming on — is shortened. What you feel is less about peak output and more about\u003cspan class=\"bm-emph\"\u003eSharper mid-range acceleration\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eExhaust note\u003c\/strong\u003e: the factory downpipe also contributes to silencing, so replacing it changes both volume and character. The low end gains body, and high in the rev range you get a metallic edge that carries\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"bm-note\"\u003eWhile an exhaust swap changes the sound at the exit, a downpipe \u003cspan class=\"bm-emph\"\u003echanges the flow from the point closest to the engine\u003c\/span\u003e. Combine the two, and each moves into territory that neither reaches on its own.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"bm-section\"\u003e\n\u003cdiv class=\"bm-sub\"\u003eCombined with ECU tuning\u003c\/div\u003e\n\u003cp class=\"bm-text\"\u003eReplacing the downpipe improves exhaust flow, but\u003cspan class=\"bm-emph\"\u003eThis alone does not produce a major increase in output\u003c\/span\u003e. This is because the factory ECU controls boost pressure and ignition timing on the assumption of a factory exhaust, so changing only the hardware doesn't let the control system keep up.\u003c\/p\u003e\n\u003cp class=\"bm-text\"\u003eA downpipe shows its full potential \u003cspan class=\"bm-emph\"\u003ewhen combined with ECU tuning\u003c\/span\u003e. Improved flow lets boost pressure be raised to match, and only then does it show up as a measurable gain in output.\u003c\/p\u003e\n\u003cp class=\"bm-note\"\u003eA downpipe on its own changes both how quickly boost builds and how the car sounds. The honest way to put it: you will feel a difference, but output depends on the tune.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"bm-section\"\u003e\n\u003cdiv class=\"bm-sub\"\u003ePairing with the S63M\u003c\/div\u003e\n\u003cp class=\"bm-text\"\u003eThe S63M is a hot-V V8 twin-turbo. Because the turbos sit inside the V bank, the exhaust path is short, and\u003cspan class=\"bm-emph\"\u003eresistance downstream is easily transmitted back to the turbine\u003c\/span\u003eThis is the structure — an engine where a downpipe's effect tends to show clearly.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"bm-section\"\u003e\n\u003cdiv class=\"bm-sub\"\u003eStandard specification\u003c\/div\u003e\n\u003cul class=\"bm-list\"\u003e\n\u003cli\u003e\n\u003cstrong\u003eConfiguration\u003c\/strong\u003e: Downpipe\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBase material\u003c\/strong\u003e: Stainless steel\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompatible Engines\u003c\/strong\u003e: S63M\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstallation\u003c\/strong\u003e: A bolt-on design for the factory mounting points\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"bm-note\"\u003eMaterial grades, pipe diameters and manufacturing details will be added to this page as soon as we have confirmed them with our supplier. Only the specifications we have verified are listed here.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"bm-section\"\u003e\n\u003cdiv class=\"bm-sub\"\u003eFitment\u003c\/div\u003e\n\u003cp class=\"bm-text\"\u003e\u003cstrong class=\"bm-emph\"\u003eBMW M5 F90 \/ M8 F91-F93 (S63M)\u003c\/strong\u003ePurpose-built design. Depending on the year, grade, and modification history, adjustment may be needed at installation — please contact us before purchase if you have any questions.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"bm-section\"\u003e\n\u003cdiv class=\"bm-sub\"\u003ePricing and Shipping\u003c\/div\u003e\n\u003cp class=\"bm-text\"\u003eThe listed price \u003cspan class=\"bm-emph\"\u003eincludes shipping, customs duties and customs clearance fees\u003c\/span\u003e. There are no additional costs after the product arrives.\u003c\/p\u003e\n\u003cp class=\"bm-text\"\u003eThis product includes\u003cspan class=\"bm-emph\"\u003eCarries no brand logo engraving\u003c\/span\u003e. Taking the cost of logo work out of the production cost is what feeds back into the price. Nothing that affects performance — material, welding, finishing — has been cut.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"bm-section\"\u003e\n\u003cdiv class=\"bm-sub\"\u003eAfter Your Purchase\u003c\/div\u003e\n\u003cp class=\"bm-text\"\u003eAfter your purchase, please send us your \u003cspan class=\"bm-emph\"\u003evehicle model, year and VIN\u003c\/span\u003e via our contact form. Contacting us is required so we can identify your exact model.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"bm-section\"\u003e\n\u003cdiv class=\"bm-sub\"\u003eAbout Installation\u003c\/div\u003e\n\u003cp class=\"bm-text\"\u003eRemoving and installing the downpipe requires a lift and specialised tools. As it sits in a high-heat area right after the turbo,\u003cspan class=\"bm-emph\"\u003eWe strongly recommend installation at a garage or professional shop\u003c\/span\u003ewe will do so.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"bm-section\"\u003e\n\u003cdiv class=\"bm-sub\"\u003eWarranty\u003c\/div\u003e\n\u003cp class=\"bm-text\"\u003eFrom the day of delivery\u003cspan class=\"bm-emph\"\u003eOne year\u003c\/span\u003edefects caused by the product itself (welding faults, material faults, dimensional faults) will be replaced free of charge.\u003cspan class=\"bm-emph\"\u003eShipping costs for both the return and the replacement are covered by us\u003c\/span\u003ewe will do so.\u003c\/p\u003e\n\u003cp class=\"bm-note\"\u003e- Damage caused by installation work, normal wear from driving, and issues arising from combination with other manufacturers' products are not covered by the warranty.\u003cbr\u003e- When making a claim, please send us your VIN and photos of the affected area.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"bm-section\"\u003e\n\u003cdiv class=\"bm-sub\"\u003eAbout Lead Time\u003c\/div\u003e\n\u003cp class=\"bm-text\"\u003eAs these are built to order, dispatch normally takes \u003cspan class=\"bm-emph\"\u003e2–4 weeks\u003c\/span\u003e after order confirmationThis is the required lead time. Depending on production and logistics conditions, delivery may take longer than stated. If you're in a hurry, please contact us before purchasing.\u003c\/p\u003e\n\u003cp class=\"bm-note\"\u003e- Depending on the vehicle's condition, year, and modification history, additional adjustment may be required at installation.\u003cbr\u003e- Weld discolouration and finish may vary slightly between units.\u003cbr\u003e- Exhaust parts are wear items. Please check regularly for exhaust leaks.\u003c\/p\u003e\n\u003cp class=\"bm-note\"\u003eBMW is a registered trademark of BMW AG. This is an aftermarket part and is neither manufactured by nor affiliated with BMW AG.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003c\/div\u003e","brand":"BIMMER+","offers":[{"title":"Default Title","offer_id":49484141789411,"sku":"BMP-DP-F90-001","price":98800.0,"currency_code":"JPY","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0777\/9457\/4563\/files\/hyflow-stainless-downpipe-bmw-f90-f91-f92-f93-s63m-img1_shopify_08c42f3b-677d-4b7a-b78d-3c0ec7c9da77.jpg?v=1785602505"},{"product_id":"hyflow-stainless-downpipe-bmw-g90-s68","title":"HYFLOW™ Stainless Downpipe BMW M5 G90 (S68)","description":"\u003cdiv class=\"bm-product\"\u003e\n\n\u003cstyle\u003e\n.bm-product{--bm-text:#111;--bm-sub:#4a5159;--bm-line:rgba(0,0,0,.12);max-width:980px;margin:0 auto;padding:0 22px;font-family:system-ui,-apple-system,Segoe UI,Roboto;color:var(--bm-text);line-height:1.75;font-size:15.5px;}\n.bm-section{margin:48px 0;padding-top:24px;border-top:1px solid var(--bm-line);}\n.bm-section:first-child{border-top:none;margin-top:12px;padding-top:0;}\n.bm-sub{font-size:12.5px;letter-spacing:.14em;text-transform:uppercase;color:var(--bm-sub);margin-bottom:14px;}\n.bm-text{max-width:720px;color:var(--bm-sub);}\n.bm-list{list-style:none;padding:0;margin:0;}\n.bm-list li{padding:10px 0;border-bottom:1px solid var(--bm-line);color:var(--bm-sub);}\n.bm-list li strong{color:var(--bm-text);font-weight:500;}\n.bm-num{list-style:none;padding:0;margin:0;counter-reset:item;}\n.bm-num li{padding:10px 0;border-bottom:1px solid var(--bm-line);color:var(--bm-sub);counter-increment:item;}\n.bm-num li::before{content:counter(item) \".  \";color:var(--bm-text);font-weight:500;}\n.bm-num li ul{margin-top:8px;padding-left:18px;}\n.bm-num li ul li{padding:4px 0;border:none;}\n.bm-note{color:var(--bm-sub);font-size:13.5px;}\n.bm-emph{color:var(--bm-text);font-weight:500;}\n.bm-tbl{width:100%;border-collapse:collapse;font-size:14.5px;}\n.bm-tbl th{text-align:left;padding:10px 14px 10px 0;border-bottom:1px solid var(--bm-line);color:var(--bm-sub);font-size:12.5px;letter-spacing:.08em;font-weight:400;white-space:nowrap;}\n.bm-tbl td{padding:12px 14px 12px 0;border-bottom:1px solid var(--bm-line);color:var(--bm-sub);vertical-align:top;}\n.bm-tbl td:first-child{color:var(--bm-text);font-weight:500;white-space:nowrap;}\n.bm-tbl td:nth-child(2){white-space:nowrap;}\n.bm-here{color:var(--bm-text);font-weight:500;}\n.bm-tag{display:inline-block;font-size:11.5px;letter-spacing:.06em;padding:2px 8px;border:1px solid var(--bm-line);border-radius:3px;color:var(--bm-sub);margin-left:8px;vertical-align:middle;}\n\/* bm-responsive-tbl *\/\n@media (max-width:600px){\n.bm-product{padding:0 16px;font-size:15px;}\n.bm-tbl{font-size:14.5px;}\n.bm-tbl,.bm-tbl tbody,.bm-tbl tr,.bm-tbl td{display:block;width:100%;}\n.bm-tbl tr:first-child{display:none;}\n.bm-tbl tr{padding:14px 0 16px;border-bottom:1px solid var(--bm-line);}\n.bm-tbl tr:last-child{border-bottom:none;}\n.bm-tbl td{border:none;padding:3px 0;white-space:normal;}\n.bm-tbl td:first-child{white-space:normal;font-size:15.5px;padding-bottom:6px;}\n.bm-tbl td:nth-child(2){white-space:normal;}\n.bm-tbl td[data-l]::before{content:attr(data-l) \": \";color:var(--bm-sub);font-size:12.5px;letter-spacing:.04em;}\n.bm-tag{margin-left:6px;}\n}\n\u003c\/style\u003e\n\n\u003cdiv class=\"bm-section\"\u003e\n\u003cdiv class=\"bm-sub\"\u003eProduct Overview\u003c\/div\u003e\n\u003cp class=\"bm-text\"\u003eThe S68 is a 4.4-litre twin-turbo V8 with 48V mild hybrid assistance. The factory downpipe is built to meet emissions regulations and noise targets, and \u003cspan class=\"bm-emph\"\u003ethe point of greatest resistance in the exhaust flow\u003c\/span\u003eThis is that point. Because it comes right after the turbo, losses here directly affect boost response.\u003c\/p\u003e\n\u003cp class=\"bm-text\"\u003eThe HYFLOW™ downpipe reworks the flow path to secure clean flow from the turbo outlet.\u003cspan class=\"bm-emph\"\u003eWhen back pressure drops, the turbine begins spinning more freely\u003c\/span\u003e, throttle response becomes sharper.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"bm-section\"\u003e\n\u003cdiv class=\"bm-sub\"\u003eWhat Changes with a Downpipe\u003c\/div\u003e\n\u003cp class=\"bm-text\"\u003eExhaust flows in the order turbo → downpipe → mid-pipe → silencer. \u003cspan class=\"bm-emph\"\u003eThe downpipe sits immediately after the turbo\u003c\/span\u003e, where exhaust gas passes through at its highest temperature and pressure in this part of the system.\u003c\/p\u003e\n\u003cul class=\"bm-list\"\u003e\n\u003cli\u003e\n\u003cstrong\u003eReduced back pressure\u003c\/strong\u003e: pressure downstream of the turbine drops. Since the turbine spins on the momentum of the exhaust gas, the lighter the load on the outlet side, the faster it spools up\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBoost response\u003c\/strong\u003e: Turbo lag — the time between pressing the accelerator and boost coming on — is shortened. What you feel is less about peak output and more about\u003cspan class=\"bm-emph\"\u003eSharper mid-range acceleration\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eExhaust note\u003c\/strong\u003e: the factory downpipe also contributes to silencing, so replacing it changes both volume and character. The low end gains body, and high in the rev range you get a metallic edge that carries\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"bm-note\"\u003eWhile an exhaust swap changes the sound at the exit, a downpipe \u003cspan class=\"bm-emph\"\u003echanges the flow from the point closest to the engine\u003c\/span\u003e. Combine the two, and each moves into territory that neither reaches on its own.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"bm-section\"\u003e\n\u003cdiv class=\"bm-sub\"\u003eCombined with ECU tuning\u003c\/div\u003e\n\u003cp class=\"bm-text\"\u003eReplacing the downpipe improves exhaust flow, but\u003cspan class=\"bm-emph\"\u003eThis alone does not produce a major increase in output\u003c\/span\u003e. This is because the factory ECU controls boost pressure and ignition timing on the assumption of a factory exhaust, so changing only the hardware doesn't let the control system keep up.\u003c\/p\u003e\n\u003cp class=\"bm-text\"\u003eA downpipe shows its full potential \u003cspan class=\"bm-emph\"\u003ewhen combined with ECU tuning\u003c\/span\u003e. Improved flow lets boost pressure be raised to match, and only then does it show up as a measurable gain in output.\u003c\/p\u003e\n\u003cp class=\"bm-note\"\u003eA downpipe on its own changes both how quickly boost builds and how the car sounds. The honest way to put it: you will feel a difference, but output depends on the tune.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"bm-section\"\u003e\n\u003cdiv class=\"bm-sub\"\u003ePairing with the S68\u003c\/div\u003e\n\u003cp class=\"bm-text\"\u003eThe S68 is the latest generation, pairing a hot-V V8 with a 48V system. While electric assist compensates for low revs,\u003cspan class=\"bm-emph\"\u003eMid-to-high rpm output depends on turbo boost\u003c\/span\u003eThis is the area where cutting exhaust-side resistance really pays off.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"bm-section\"\u003e\n\u003cdiv class=\"bm-sub\"\u003eStandard specification\u003c\/div\u003e\n\u003cul class=\"bm-list\"\u003e\n\u003cli\u003e\n\u003cstrong\u003eConfiguration\u003c\/strong\u003e: Downpipe\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBase material\u003c\/strong\u003e: Stainless steel\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompatible Engines\u003c\/strong\u003e: S68\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstallation\u003c\/strong\u003e: A bolt-on design for the factory mounting points\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"bm-note\"\u003eMaterial grades, pipe diameters and manufacturing details will be added to this page as soon as we have confirmed them with our supplier. Only the specifications we have verified are listed here.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"bm-section\"\u003e\n\u003cdiv class=\"bm-sub\"\u003eFitment\u003c\/div\u003e\n\u003cp class=\"bm-text\"\u003e\u003cstrong class=\"bm-emph\"\u003eBMW M5 G90 (S68)\u003c\/strong\u003ePurpose-built design. Depending on the year, grade, and modification history, adjustment may be needed at installation — please contact us before purchase if you have any questions.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"bm-section\"\u003e\n\u003cdiv class=\"bm-sub\"\u003ePricing and Shipping\u003c\/div\u003e\n\u003cp class=\"bm-text\"\u003eThe listed price \u003cspan class=\"bm-emph\"\u003eincludes shipping, customs duties and customs clearance fees\u003c\/span\u003e. There are no additional costs after the product arrives.\u003c\/p\u003e\n\u003cp class=\"bm-text\"\u003eThis product includes\u003cspan class=\"bm-emph\"\u003eCarries no brand logo engraving\u003c\/span\u003e. Taking the cost of logo work out of the production cost is what feeds back into the price. Nothing that affects performance — material, welding, finishing — has been cut.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"bm-section\"\u003e\n\u003cdiv class=\"bm-sub\"\u003eAfter Your Purchase\u003c\/div\u003e\n\u003cp class=\"bm-text\"\u003eAfter your purchase, please send us your \u003cspan class=\"bm-emph\"\u003evehicle model, year and VIN\u003c\/span\u003e via our contact form. Contacting us is required so we can identify your exact model.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"bm-section\"\u003e\n\u003cdiv class=\"bm-sub\"\u003eAbout Installation\u003c\/div\u003e\n\u003cp class=\"bm-text\"\u003eRemoving and installing the downpipe requires a lift and specialised tools. As it sits in a high-heat area right after the turbo,\u003cspan class=\"bm-emph\"\u003eWe strongly recommend installation at a garage or professional shop\u003c\/span\u003ewe will do so.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"bm-section\"\u003e\n\u003cdiv class=\"bm-sub\"\u003eWarranty\u003c\/div\u003e\n\u003cp class=\"bm-text\"\u003eFrom the day of delivery\u003cspan class=\"bm-emph\"\u003eOne year\u003c\/span\u003edefects caused by the product itself (welding faults, material faults, dimensional faults) will be replaced free of charge.\u003cspan class=\"bm-emph\"\u003eShipping costs for both the return and the replacement are covered by us\u003c\/span\u003ewe will do so.\u003c\/p\u003e\n\u003cp class=\"bm-note\"\u003e- Damage caused by installation work, normal wear from driving, and issues arising from combination with other manufacturers' products are not covered by the warranty.\u003cbr\u003e- When making a claim, please send us your VIN and photos of the affected area.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"bm-section\"\u003e\n\u003cdiv class=\"bm-sub\"\u003eAbout Lead Time\u003c\/div\u003e\n\u003cp class=\"bm-text\"\u003eAs these are built to order, dispatch normally takes \u003cspan class=\"bm-emph\"\u003e2–4 weeks\u003c\/span\u003e after order confirmationThis is the required lead time. Depending on production and logistics conditions, delivery may take longer than stated. If you're in a hurry, please contact us before purchasing.\u003c\/p\u003e\n\u003cp class=\"bm-note\"\u003e- Depending on the vehicle's condition, year, and modification history, additional adjustment may be required at installation.\u003cbr\u003e- Weld discolouration and finish may vary slightly between units.\u003cbr\u003e- Exhaust parts are wear items. Please check regularly for exhaust leaks.\u003c\/p\u003e\n\u003cp class=\"bm-note\"\u003eBMW is a registered trademark of BMW AG. This is an aftermarket part and is neither manufactured by nor affiliated with BMW AG.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003c\/div\u003e","brand":"BIMMER+","offers":[{"title":"Default Title","offer_id":49484142084323,"sku":"BMP-DP-G90-001","price":102800.0,"currency_code":"JPY","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0777\/9457\/4563\/files\/hyflow-stainless-downpipe-bmw-g90-s68-img1_shopify_7df2417a-2cd2-41cc-921e-70d9feaaf7c4.jpg?v=1785602511"},{"product_id":"hyflow-stainless-downpipe-bmw-f95-f96-s63","title":"HYFLOW™ Stainless Downpipe BMW X5M F95 \/ X6M F96 (S63)","description":"\u003cdiv class=\"bm-product\"\u003e\n\n\u003cstyle\u003e\n.bm-product{--bm-text:#111;--bm-sub:#4a5159;--bm-line:rgba(0,0,0,.12);max-width:980px;margin:0 auto;padding:0 22px;font-family:system-ui,-apple-system,Segoe UI,Roboto;color:var(--bm-text);line-height:1.75;font-size:15.5px;}\n.bm-section{margin:48px 0;padding-top:24px;border-top:1px solid var(--bm-line);}\n.bm-section:first-child{border-top:none;margin-top:12px;padding-top:0;}\n.bm-sub{font-size:12.5px;letter-spacing:.14em;text-transform:uppercase;color:var(--bm-sub);margin-bottom:14px;}\n.bm-text{max-width:720px;color:var(--bm-sub);}\n.bm-list{list-style:none;padding:0;margin:0;}\n.bm-list li{padding:10px 0;border-bottom:1px solid var(--bm-line);color:var(--bm-sub);}\n.bm-list li strong{color:var(--bm-text);font-weight:500;}\n.bm-num{list-style:none;padding:0;margin:0;counter-reset:item;}\n.bm-num li{padding:10px 0;border-bottom:1px solid var(--bm-line);color:var(--bm-sub);counter-increment:item;}\n.bm-num li::before{content:counter(item) \".  \";color:var(--bm-text);font-weight:500;}\n.bm-num li ul{margin-top:8px;padding-left:18px;}\n.bm-num li ul li{padding:4px 0;border:none;}\n.bm-note{color:var(--bm-sub);font-size:13.5px;}\n.bm-emph{color:var(--bm-text);font-weight:500;}\n.bm-tbl{width:100%;border-collapse:collapse;font-size:14.5px;}\n.bm-tbl th{text-align:left;padding:10px 14px 10px 0;border-bottom:1px solid var(--bm-line);color:var(--bm-sub);font-size:12.5px;letter-spacing:.08em;font-weight:400;white-space:nowrap;}\n.bm-tbl td{padding:12px 14px 12px 0;border-bottom:1px solid var(--bm-line);color:var(--bm-sub);vertical-align:top;}\n.bm-tbl td:first-child{color:var(--bm-text);font-weight:500;white-space:nowrap;}\n.bm-tbl td:nth-child(2){white-space:nowrap;}\n.bm-here{color:var(--bm-text);font-weight:500;}\n.bm-tag{display:inline-block;font-size:11.5px;letter-spacing:.06em;padding:2px 8px;border:1px solid var(--bm-line);border-radius:3px;color:var(--bm-sub);margin-left:8px;vertical-align:middle;}\n\/* bm-responsive-tbl *\/\n@media (max-width:600px){\n.bm-product{padding:0 16px;font-size:15px;}\n.bm-tbl{font-size:14.5px;}\n.bm-tbl,.bm-tbl tbody,.bm-tbl tr,.bm-tbl td{display:block;width:100%;}\n.bm-tbl tr:first-child{display:none;}\n.bm-tbl tr{padding:14px 0 16px;border-bottom:1px solid var(--bm-line);}\n.bm-tbl tr:last-child{border-bottom:none;}\n.bm-tbl td{border:none;padding:3px 0;white-space:normal;}\n.bm-tbl td:first-child{white-space:normal;font-size:15.5px;padding-bottom:6px;}\n.bm-tbl td:nth-child(2){white-space:normal;}\n.bm-tbl td[data-l]::before{content:attr(data-l) \": \";color:var(--bm-sub);font-size:12.5px;letter-spacing:.04em;}\n.bm-tag{margin-left:6px;}\n}\n\u003c\/style\u003e\n\n\u003cdiv class=\"bm-section\"\u003e\n\u003cdiv class=\"bm-sub\"\u003eProduct Overview\u003c\/div\u003e\n\u003cp class=\"bm-text\"\u003eThe S63 is a 4.4L V8 twin-turbo engine. The factory downpipe is structured to meet emissions regulations and quietness, and\u003cspan class=\"bm-emph\"\u003ethe point of greatest resistance in the exhaust flow\u003c\/span\u003eThis is that point. Because it comes right after the turbo, losses here directly affect boost response.\u003c\/p\u003e\n\u003cp class=\"bm-text\"\u003eThe HYFLOW™ downpipe reworks the flow path to secure clean flow from the turbo outlet.\u003cspan class=\"bm-emph\"\u003eWhen back pressure drops, the turbine begins spinning more freely\u003c\/span\u003e, throttle response becomes sharper.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"bm-section\"\u003e\n\u003cdiv class=\"bm-sub\"\u003eWhat Changes with a Downpipe\u003c\/div\u003e\n\u003cp class=\"bm-text\"\u003eExhaust flows in the order turbo → downpipe → mid-pipe → silencer. \u003cspan class=\"bm-emph\"\u003eThe downpipe sits immediately after the turbo\u003c\/span\u003e, where exhaust gas passes through at its highest temperature and pressure in this part of the system.\u003c\/p\u003e\n\u003cul class=\"bm-list\"\u003e\n\u003cli\u003e\n\u003cstrong\u003eReduced back pressure\u003c\/strong\u003e: pressure downstream of the turbine drops. Since the turbine spins on the momentum of the exhaust gas, the lighter the load on the outlet side, the faster it spools up\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBoost response\u003c\/strong\u003e: Turbo lag — the time between pressing the accelerator and boost coming on — is shortened. What you feel is less about peak output and more about\u003cspan class=\"bm-emph\"\u003eSharper mid-range acceleration\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eExhaust note\u003c\/strong\u003e: the factory downpipe also contributes to silencing, so replacing it changes both volume and character. The low end gains body, and high in the rev range you get a metallic edge that carries\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"bm-note\"\u003eWhile an exhaust swap changes the sound at the exit, a downpipe \u003cspan class=\"bm-emph\"\u003echanges the flow from the point closest to the engine\u003c\/span\u003e. Combine the two, and each moves into territory that neither reaches on its own.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"bm-section\"\u003e\n\u003cdiv class=\"bm-sub\"\u003eCombined with ECU tuning\u003c\/div\u003e\n\u003cp class=\"bm-text\"\u003eReplacing the downpipe improves exhaust flow, but\u003cspan class=\"bm-emph\"\u003eThis alone does not produce a major increase in output\u003c\/span\u003e. This is because the factory ECU controls boost pressure and ignition timing on the assumption of a factory exhaust, so changing only the hardware doesn't let the control system keep up.\u003c\/p\u003e\n\u003cp class=\"bm-text\"\u003eA downpipe shows its full potential \u003cspan class=\"bm-emph\"\u003ewhen combined with ECU tuning\u003c\/span\u003e. Improved flow lets boost pressure be raised to match, and only then does it show up as a measurable gain in output.\u003c\/p\u003e\n\u003cp class=\"bm-note\"\u003eA downpipe on its own changes both how quickly boost builds and how the car sounds. The honest way to put it: you will feel a difference, but output depends on the tune.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"bm-section\"\u003e\n\u003cdiv class=\"bm-sub\"\u003eCombination with the S63\u003c\/div\u003e\n\u003cp class=\"bm-text\"\u003eThe S63 places its turbines inside the V of the engine banks\u003cspan class=\"bm-emph\"\u003eHot-V layout\u003c\/span\u003eThis is the case. In exchange for a short, compact exhaust path, the structure also makes it easier for downstream resistance to transmit back to the turbine.\u003cbr\u003e\u003cbr\u003eBecause the downpipe sits right after the turbo,\u003cspan class=\"bm-emph\"\u003eThis is especially effective on V8 twin-turbo engines\u003c\/span\u003eis the part.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"bm-section\"\u003e\n\u003cdiv class=\"bm-sub\"\u003eStandard specification\u003c\/div\u003e\n\u003cul class=\"bm-list\"\u003e\n\u003cli\u003e\n\u003cstrong\u003eConfiguration\u003c\/strong\u003e: Downpipe\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBase material\u003c\/strong\u003e: Stainless steel\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompatible Engines\u003c\/strong\u003e: S63\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstallation\u003c\/strong\u003e: A bolt-on design for the factory mounting points\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"bm-note\"\u003eMaterial grades, pipe diameters and manufacturing details will be added to this page as soon as we have confirmed them with our supplier. Only the specifications we have verified are listed here.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"bm-section\"\u003e\n\u003cdiv class=\"bm-sub\"\u003eFitment\u003c\/div\u003e\n\u003cp class=\"bm-text\"\u003e\u003cstrong class=\"bm-emph\"\u003eBMW X5M F95 \/ X6M F96 (S63)\u003c\/strong\u003ePurpose-built design. Depending on the year, grade, and modification history, adjustment may be needed at installation — please contact us before purchase if you have any questions.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"bm-section\"\u003e\n\u003cdiv class=\"bm-sub\"\u003ePricing and Shipping\u003c\/div\u003e\n\u003cp class=\"bm-text\"\u003eThe listed price \u003cspan class=\"bm-emph\"\u003eincludes shipping, customs duties and customs clearance fees\u003c\/span\u003e. There are no additional costs after the product arrives.\u003c\/p\u003e\n\u003cp class=\"bm-text\"\u003eThis product includes\u003cspan class=\"bm-emph\"\u003eCarries no brand logo engraving\u003c\/span\u003e. Taking the cost of logo work out of the production cost is what feeds back into the price. Nothing that affects performance — material, welding, finishing — has been cut.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"bm-section\"\u003e\n\u003cdiv class=\"bm-sub\"\u003eAfter Your Purchase\u003c\/div\u003e\n\u003cp class=\"bm-text\"\u003eAfter your purchase, please send us your \u003cspan class=\"bm-emph\"\u003evehicle model, year and VIN\u003c\/span\u003e via our contact form. Contacting us is required so we can identify your exact model.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"bm-section\"\u003e\n\u003cdiv class=\"bm-sub\"\u003eAbout Installation\u003c\/div\u003e\n\u003cp class=\"bm-text\"\u003eRemoving and installing the downpipe requires a lift and specialised tools. As it sits in a high-heat area right after the turbo,\u003cspan class=\"bm-emph\"\u003eWe strongly recommend installation at a garage or professional shop\u003c\/span\u003ewe will do so.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"bm-section\"\u003e\n\u003cdiv class=\"bm-sub\"\u003eWarranty\u003c\/div\u003e\n\u003cp class=\"bm-text\"\u003eFrom the day of delivery\u003cspan class=\"bm-emph\"\u003eOne year\u003c\/span\u003edefects caused by the product itself (welding faults, material faults, dimensional faults) will be replaced free of charge.\u003cspan class=\"bm-emph\"\u003eShipping costs for both the return and the replacement are covered by us\u003c\/span\u003ewe will do so.\u003c\/p\u003e\n\u003cp class=\"bm-note\"\u003e- Damage caused by installation work, normal wear from driving, and issues arising from combination with other manufacturers' products are not covered by the warranty.\u003cbr\u003e- When making a claim, please send us your VIN and photos of the affected area.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"bm-section\"\u003e\n\u003cdiv class=\"bm-sub\"\u003eAbout Lead Time\u003c\/div\u003e\n\u003cp class=\"bm-text\"\u003eAs these are built to order, dispatch normally takes \u003cspan class=\"bm-emph\"\u003e2–4 weeks\u003c\/span\u003e after order confirmationThis is the required lead time. Depending on production and logistics conditions, delivery may take longer than stated. If you're in a hurry, please contact us before purchasing.\u003c\/p\u003e\n\u003cp class=\"bm-note\"\u003e- Depending on the vehicle's condition, year, and modification history, additional adjustment may be required at installation.\u003cbr\u003e- Weld discolouration and finish may vary slightly between units.\u003cbr\u003e- Exhaust parts are wear items. Please check regularly for exhaust leaks.\u003c\/p\u003e\n\u003cp class=\"bm-note\"\u003eBMW is a registered trademark of BMW AG. This is an aftermarket part and is neither manufactured by nor affiliated with BMW AG.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003c\/div\u003e","brand":"BIMMER+","offers":[{"title":"Default Title","offer_id":49484142149859,"sku":"BMP-DP-F95-001","price":92800.0,"currency_code":"JPY","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0777\/9457\/4563\/files\/hyflow-stainless-downpipe-bmw-f95-f96-s63-img1_shopify_4497bfd6-5d62-41cf-9808-bd73a9c34964.jpg?v=1785602516"},{"product_id":"hyflow-stainless-catless-downpipe-bmw-f80-f82-f83-s55","title":"HYFLOW™ Stainless Catless Downpipe BMW M3 F80 \/ M4 F82 (S55)","description":"\u003cdiv class=\"bm-product\"\u003e\n\n\u003cstyle\u003e\n.bm-product{--bm-text:#111;--bm-sub:#4a5159;--bm-line:rgba(0,0,0,.12);max-width:980px;margin:0 auto;padding:0 22px;font-family:system-ui,-apple-system,Segoe UI,Roboto;color:var(--bm-text);line-height:1.75;font-size:15.5px;}\n.bm-section{margin:48px 0;padding-top:24px;border-top:1px solid var(--bm-line);}\n.bm-section:first-child{border-top:none;margin-top:12px;padding-top:0;}\n.bm-sub{font-size:12.5px;letter-spacing:.14em;text-transform:uppercase;color:var(--bm-sub);margin-bottom:14px;}\n.bm-text{max-width:720px;color:var(--bm-sub);}\n.bm-list{list-style:none;padding:0;margin:0;}\n.bm-list li{padding:10px 0;border-bottom:1px solid var(--bm-line);color:var(--bm-sub);}\n.bm-list li strong{color:var(--bm-text);font-weight:500;}\n.bm-num{list-style:none;padding:0;margin:0;counter-reset:item;}\n.bm-num li{padding:10px 0;border-bottom:1px solid var(--bm-line);color:var(--bm-sub);counter-increment:item;}\n.bm-num li::before{content:counter(item) \".  \";color:var(--bm-text);font-weight:500;}\n.bm-num li ul{margin-top:8px;padding-left:18px;}\n.bm-num li ul li{padding:4px 0;border:none;}\n.bm-note{color:var(--bm-sub);font-size:13.5px;}\n.bm-emph{color:var(--bm-text);font-weight:500;}\n.bm-tbl{width:100%;border-collapse:collapse;font-size:14.5px;}\n.bm-tbl th{text-align:left;padding:10px 14px 10px 0;border-bottom:1px solid var(--bm-line);color:var(--bm-sub);font-size:12.5px;letter-spacing:.08em;font-weight:400;white-space:nowrap;}\n.bm-tbl td{padding:12px 14px 12px 0;border-bottom:1px solid var(--bm-line);color:var(--bm-sub);vertical-align:top;}\n.bm-tbl td:first-child{color:var(--bm-text);font-weight:500;white-space:nowrap;}\n.bm-tbl td:nth-child(2){white-space:nowrap;}\n.bm-here{color:var(--bm-text);font-weight:500;}\n.bm-tag{display:inline-block;font-size:11.5px;letter-spacing:.06em;padding:2px 8px;border:1px solid var(--bm-line);border-radius:3px;color:var(--bm-sub);margin-left:8px;vertical-align:middle;}\n\/* bm-responsive-tbl *\/\n@media (max-width:600px){\n.bm-product{padding:0 16px;font-size:15px;}\n.bm-tbl{font-size:14.5px;}\n.bm-tbl,.bm-tbl tbody,.bm-tbl tr,.bm-tbl td{display:block;width:100%;}\n.bm-tbl tr:first-child{display:none;}\n.bm-tbl tr{padding:14px 0 16px;border-bottom:1px solid var(--bm-line);}\n.bm-tbl tr:last-child{border-bottom:none;}\n.bm-tbl td{border:none;padding:3px 0;white-space:normal;}\n.bm-tbl td:first-child{white-space:normal;font-size:15.5px;padding-bottom:6px;}\n.bm-tbl td:nth-child(2){white-space:normal;}\n.bm-tbl td[data-l]::before{content:attr(data-l) \": \";color:var(--bm-sub);font-size:12.5px;letter-spacing:.04em;}\n.bm-tag{margin-left:6px;}\n}\n\u003c\/style\u003e\n\n\u003cdiv class=\"bm-section\"\u003e\n\u003cdiv class=\"bm-sub\"\u003eProduct Overview\u003c\/div\u003e\n\u003cp class=\"bm-text\"\u003eThe S55 is a 3.0-litre twin-turbo straight-six. The factory downpipe has a catalytic converter built in, and while it cleans the exhaust gases,\u003cspan class=\"bm-emph\"\u003ethe part that narrows the exhaust path the most\u003c\/span\u003eThis is also true here. Positioned right after the turbo, resistance at this point directly affects how boost builds.\u003c\/p\u003e\n\u003cp class=\"bm-text\"\u003eThe HYFLOW™ catless downpipe removes the catalytic converter from this section, and\u003cspan class=\"bm-emph\"\u003eA path that runs straight downstream from the turbine outlet\u003c\/span\u003e. This creates that gap — as back-pressure drops, the turbo begins spinning up more readily, shortening the time between pressing the throttle and boost arriving.\u003c\/p\u003e\n\u003cp class=\"bm-note\"\u003eThis product has \u003cspan class=\"bm-emph\"\u003eno catalytic converter\u003c\/span\u003e. Please refer to \"About Regulations\" for the conditions of use.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"bm-section\"\u003e\n\u003cdiv class=\"bm-sub\"\u003eWhat Changes with a Downpipe\u003c\/div\u003e\n\u003cp class=\"bm-text\"\u003eExhaust flows in the order turbo → downpipe → mid-pipe → silencer. \u003cspan class=\"bm-emph\"\u003eThe downpipe sits immediately after the turbo\u003c\/span\u003e, where exhaust gas passes through at its highest temperature and pressure in this part of the system.\u003c\/p\u003e\n\u003cul class=\"bm-list\"\u003e\n\u003cli\u003e\n\u003cstrong\u003eReduced back pressure\u003c\/strong\u003e: pressure downstream of the turbine drops. Since the turbine spins on the momentum of the exhaust gas, the lighter the load on the outlet side, the faster it spools up\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBoost response\u003c\/strong\u003e: Turbo lag — the time between pressing the accelerator and boost coming on — is shortened. What you feel is less about peak output and more about\u003cspan class=\"bm-emph\"\u003eSharper mid-range acceleration\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eExhaust note\u003c\/strong\u003e: the factory downpipe also contributes to silencing, so replacing it changes both volume and character. The low end gains body, and high in the rev range you get a metallic edge that carries\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"bm-note\"\u003eWhile an exhaust swap changes the sound at the exit, a downpipe \u003cspan class=\"bm-emph\"\u003echanges the flow from the point closest to the engine\u003c\/span\u003e. Combine the two, and each moves into territory that neither reaches on its own.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"bm-section\"\u003e\n\u003cdiv class=\"bm-sub\"\u003eCombined with ECU tuning\u003c\/div\u003e\n\u003cp class=\"bm-text\"\u003eReplacing the downpipe improves exhaust flow, but\u003cspan class=\"bm-emph\"\u003eThis alone does not produce a major increase in output\u003c\/span\u003e. This is because the factory ECU controls boost pressure and ignition timing on the assumption of a factory exhaust, so changing only the hardware doesn't let the control system keep up.\u003c\/p\u003e\n\u003cp class=\"bm-text\"\u003eA downpipe shows its full potential \u003cspan class=\"bm-emph\"\u003ewhen combined with ECU tuning\u003c\/span\u003e. Improved flow lets boost pressure be raised to match, and only then does it show up as a measurable gain in output.\u003c\/p\u003e\n\u003cp class=\"bm-note\"\u003eA downpipe on its own changes both how quickly boost builds and how the car sounds. The honest way to put it: you will feel a difference, but output depends on the tune.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"bm-section\"\u003e\n\u003cdiv class=\"bm-sub\"\u003eAbout Regulations\u003c\/div\u003e\n\u003cp class=\"bm-text\"\u003eThis product \u003cspan class=\"bm-emph\"\u003ehas no catalytic converter and does not comply with Japan's vehicle safety regulations\u003c\/span\u003e. It does not meet the emissions standards required for road use in Japan and will not pass Japan's shaken inspection.\u003c\/p\u003e\n\u003cp class=\"bm-text\"\u003e\u003cspan class=\"bm-emph\"\u003eA product limited to circuit driving and competition use\u003c\/span\u003eis offered as such. Please refrain from using it on public roads. Confirm the intended use before deciding.\u003c\/p\u003e\n\u003cp class=\"bm-note\"\u003eIf you prefer a version that keeps the catalytic converter, we also offer, for the same model,\u003cspan class=\"bm-emph\"\u003eCatted downpipe\u003c\/span\u003e. We offer this.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"bm-section\"\u003e\n\u003cdiv class=\"bm-sub\"\u003ePairing with the S55\u003c\/div\u003e\n\u003cp class=\"bm-text\"\u003eThe S55 has two turbos, each serving three cylinders. The downpipes are likewise a pair, left and right, and this product is supplied as a set.\u003cbr\u003e\u003cbr\u003eThe S55 has a wide range of boost pressure control, and\u003cspan class=\"bm-emph\"\u003eReducing resistance on the exhaust side tends to show up in boost response\u003c\/span\u003eis the engine.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"bm-section\"\u003e\n\u003cdiv class=\"bm-sub\"\u003eStandard specification\u003c\/div\u003e\n\u003cul class=\"bm-list\"\u003e\n\u003cli\u003e\n\u003cstrong\u003eConfiguration\u003c\/strong\u003e: Catless downpipe\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBase material\u003c\/strong\u003e: Stainless steel\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompatible Engines\u003c\/strong\u003e: S55\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstallation\u003c\/strong\u003e: A bolt-on design for the factory mounting points\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"bm-note\"\u003eMaterial grades, pipe diameters and manufacturing details will be added to this page as soon as we have confirmed them with our supplier. Only the specifications we have verified are listed here.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"bm-section\"\u003e\n\u003cdiv class=\"bm-sub\"\u003eFitment\u003c\/div\u003e\n\u003cp class=\"bm-text\"\u003e\u003cstrong class=\"bm-emph\"\u003eBMW M3 F80 \/ M4 F82 (S55)\u003c\/strong\u003ePurpose-built design. Depending on the year, grade, and modification history, adjustment may be needed at installation — please contact us before purchase if you have any questions.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"bm-section\"\u003e\n\u003cdiv class=\"bm-sub\"\u003ePricing and Shipping\u003c\/div\u003e\n\u003cp class=\"bm-text\"\u003eThe listed price \u003cspan class=\"bm-emph\"\u003eincludes shipping, customs duties and customs clearance fees\u003c\/span\u003e. There are no additional costs after the product arrives.\u003c\/p\u003e\n\u003cp class=\"bm-text\"\u003eThis product includes\u003cspan class=\"bm-emph\"\u003eCarries no brand logo engraving\u003c\/span\u003e. Taking the cost of logo work out of the production cost is what feeds back into the price. Nothing that affects performance — material, welding, finishing — has been cut.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"bm-section\"\u003e\n\u003cdiv class=\"bm-sub\"\u003eAfter Your Purchase\u003c\/div\u003e\n\u003cp class=\"bm-text\"\u003eAfter your purchase, please send us your \u003cspan class=\"bm-emph\"\u003evehicle model, year and VIN\u003c\/span\u003e via our contact form. Contacting us is required so we can identify your exact model.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"bm-section\"\u003e\n\u003cdiv class=\"bm-sub\"\u003eAbout Installation\u003c\/div\u003e\n\u003cp class=\"bm-text\"\u003eRemoving and installing the downpipe requires a lift and specialised tools. As it sits in a high-heat area right after the turbo,\u003cspan class=\"bm-emph\"\u003eWe strongly recommend installation at a garage or professional shop\u003c\/span\u003ewe will do so.\u003c\/p\u003e\n\u003cp class=\"bm-text\"\u003eRemoving the catalytic converter causes \u003cspan class=\"bm-emph\"\u003ethe O2 sensor to detect an abnormality and trigger a warning light\u003c\/span\u003e. An O2 sensor adapter or a change of control strategy through ECU tuning will be required. Discuss this with your fitting workshop in advance.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"bm-section\"\u003e\n\u003cdiv class=\"bm-sub\"\u003eWarranty\u003c\/div\u003e\n\u003cp class=\"bm-text\"\u003eFrom the day of delivery\u003cspan class=\"bm-emph\"\u003eOne year\u003c\/span\u003edefects caused by the product itself (welding faults, material faults, dimensional faults) will be replaced free of charge.\u003cspan class=\"bm-emph\"\u003eShipping costs for both the return and the replacement are covered by us\u003c\/span\u003ewe will do so.\u003c\/p\u003e\n\u003cp class=\"bm-note\"\u003e- Damage caused by installation work, normal wear from driving, and issues arising from combination with other manufacturers' products are not covered by the warranty.\u003cbr\u003e- When making a claim, please send us your VIN and photos of the affected area.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"bm-section\"\u003e\n\u003cdiv class=\"bm-sub\"\u003eAbout Lead Time\u003c\/div\u003e\n\u003cp class=\"bm-text\"\u003eAs these are built to order, dispatch normally takes \u003cspan class=\"bm-emph\"\u003e2–4 weeks\u003c\/span\u003e after order confirmationThis is the required lead time. Depending on production and logistics conditions, delivery may take longer than stated. If you're in a hurry, please contact us before purchasing.\u003c\/p\u003e\n\u003cp class=\"bm-note\"\u003e- This product is intended for off-road\/motorsport use. It cannot be used on public roads.\u003cbr\u003e- Depending on the vehicle's condition, year, and modification history, additional adjustment may be required at installation.\u003cbr\u003e- Weld discolouration and finish may vary slightly between units.\u003cbr\u003e- Exhaust parts are wear items. Please check regularly for exhaust leaks.\u003c\/p\u003e\n\u003cp class=\"bm-note\"\u003eBMW is a registered trademark of BMW AG. This is an aftermarket part and is neither manufactured by nor affiliated with BMW AG.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003c\/div\u003e","brand":"BIMMER+","offers":[{"title":"Default Title","offer_id":49484142280931,"sku":"BMP-DP-F80-001","price":100800.0,"currency_code":"JPY","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0777\/9457\/4563\/files\/hyflow-stainless-catless-downpipe-bmw-f80-f82-f83-s55-img1_shopify_6e06148c-e5c5-48f4-9a46-96e76d8450bb.jpg?v=1785602522"},{"product_id":"hyflow-downpipe-bmw-f20-f21-f30-f31-n20","title":"HYFLOW™ Downpipe BMW 120i\/320i\/420i\/520i (F-Chassis) (N20)","description":"\u003cdiv class=\"bm-product\"\u003e\n\n\u003cstyle\u003e\n.bm-product{--bm-text:#111;--bm-sub:#4a5159;--bm-line:rgba(0,0,0,.12);max-width:980px;margin:0 auto;padding:0 22px;font-family:system-ui,-apple-system,Segoe UI,Roboto;color:var(--bm-text);line-height:1.75;font-size:15.5px;}\n.bm-section{margin:48px 0;padding-top:24px;border-top:1px solid var(--bm-line);}\n.bm-section:first-child{border-top:none;margin-top:12px;padding-top:0;}\n.bm-sub{font-size:12.5px;letter-spacing:.14em;text-transform:uppercase;color:var(--bm-sub);margin-bottom:14px;}\n.bm-text{max-width:720px;color:var(--bm-sub);}\n.bm-list{list-style:none;padding:0;margin:0;}\n.bm-list li{padding:10px 0;border-bottom:1px solid var(--bm-line);color:var(--bm-sub);}\n.bm-list li strong{color:var(--bm-text);font-weight:500;}\n.bm-num{list-style:none;padding:0;margin:0;counter-reset:item;}\n.bm-num li{padding:10px 0;border-bottom:1px solid var(--bm-line);color:var(--bm-sub);counter-increment:item;}\n.bm-num li::before{content:counter(item) \".  \";color:var(--bm-text);font-weight:500;}\n.bm-num li ul{margin-top:8px;padding-left:18px;}\n.bm-num li ul li{padding:4px 0;border:none;}\n.bm-note{color:var(--bm-sub);font-size:13.5px;}\n.bm-emph{color:var(--bm-text);font-weight:500;}\n.bm-tbl{width:100%;border-collapse:collapse;font-size:14.5px;}\n.bm-tbl th{text-align:left;padding:10px 14px 10px 0;border-bottom:1px solid var(--bm-line);color:var(--bm-sub);font-size:12.5px;letter-spacing:.08em;font-weight:400;white-space:nowrap;}\n.bm-tbl td{padding:12px 14px 12px 0;border-bottom:1px solid var(--bm-line);color:var(--bm-sub);vertical-align:top;}\n.bm-tbl td:first-child{color:var(--bm-text);font-weight:500;white-space:nowrap;}\n.bm-tbl td:nth-child(2){white-space:nowrap;}\n.bm-here{color:var(--bm-text);font-weight:500;}\n.bm-tag{display:inline-block;font-size:11.5px;letter-spacing:.06em;padding:2px 8px;border:1px solid var(--bm-line);border-radius:3px;color:var(--bm-sub);margin-left:8px;vertical-align:middle;}\n\/* bm-responsive-tbl *\/\n@media (max-width:600px){\n.bm-product{padding:0 16px;font-size:15px;}\n.bm-tbl{font-size:14.5px;}\n.bm-tbl,.bm-tbl tbody,.bm-tbl tr,.bm-tbl td{display:block;width:100%;}\n.bm-tbl tr:first-child{display:none;}\n.bm-tbl tr{padding:14px 0 16px;border-bottom:1px solid var(--bm-line);}\n.bm-tbl tr:last-child{border-bottom:none;}\n.bm-tbl td{border:none;padding:3px 0;white-space:normal;}\n.bm-tbl td:first-child{white-space:normal;font-size:15.5px;padding-bottom:6px;}\n.bm-tbl td:nth-child(2){white-space:normal;}\n.bm-tbl td[data-l]::before{content:attr(data-l) \": \";color:var(--bm-sub);font-size:12.5px;letter-spacing:.04em;}\n.bm-tag{margin-left:6px;}\n}\n\u003c\/style\u003e\n\n\u003cdiv class=\"bm-section\"\u003e\n\u003cdiv class=\"bm-sub\"\u003eProduct Overview\u003c\/div\u003e\n\u003cp class=\"bm-text\"\u003eThe N20 is a 2.0L inline-4 turbo engine. The factory downpipe is structured to meet emissions regulations and quietness, and\u003cspan class=\"bm-emph\"\u003ethe point of greatest resistance in the exhaust flow\u003c\/span\u003eThis is that point. Because it comes right after the turbo, losses here directly affect boost response.\u003c\/p\u003e\n\u003cp class=\"bm-text\"\u003eThe HYFLOW™ downpipe reworks the flow path to secure clean flow from the turbo outlet.\u003cspan class=\"bm-emph\"\u003eWhen back pressure drops, the turbine begins spinning more freely\u003c\/span\u003e, throttle response becomes sharper.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"bm-section\"\u003e\n\u003cdiv class=\"bm-sub\"\u003eWhat Changes with a Downpipe\u003c\/div\u003e\n\u003cp class=\"bm-text\"\u003eExhaust flows in the order turbo → downpipe → mid-pipe → silencer. \u003cspan class=\"bm-emph\"\u003eThe downpipe sits immediately after the turbo\u003c\/span\u003e, where exhaust gas passes through at its highest temperature and pressure in this part of the system.\u003c\/p\u003e\n\u003cul class=\"bm-list\"\u003e\n\u003cli\u003e\n\u003cstrong\u003eReduced back pressure\u003c\/strong\u003e: pressure downstream of the turbine drops. Since the turbine spins on the momentum of the exhaust gas, the lighter the load on the outlet side, the faster it spools up\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBoost response\u003c\/strong\u003e: Turbo lag — the time between pressing the accelerator and boost coming on — is shortened. What you feel is less about peak output and more about\u003cspan class=\"bm-emph\"\u003eSharper mid-range acceleration\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eExhaust note\u003c\/strong\u003e: the factory downpipe also contributes to silencing, so replacing it changes both volume and character. The low end gains body, and high in the rev range you get a metallic edge that carries\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"bm-note\"\u003eWhile an exhaust swap changes the sound at the exit, a downpipe \u003cspan class=\"bm-emph\"\u003echanges the flow from the point closest to the engine\u003c\/span\u003e. Combine the two, and each moves into territory that neither reaches on its own.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"bm-section\"\u003e\n\u003cdiv class=\"bm-sub\"\u003eCombined with ECU tuning\u003c\/div\u003e\n\u003cp class=\"bm-text\"\u003eReplacing the downpipe improves exhaust flow, but\u003cspan class=\"bm-emph\"\u003eThis alone does not produce a major increase in output\u003c\/span\u003e. This is because the factory ECU controls boost pressure and ignition timing on the assumption of a factory exhaust, so changing only the hardware doesn't let the control system keep up.\u003c\/p\u003e\n\u003cp class=\"bm-text\"\u003eA downpipe shows its full potential \u003cspan class=\"bm-emph\"\u003ewhen combined with ECU tuning\u003c\/span\u003e. Improved flow lets boost pressure be raised to match, and only then does it show up as a measurable gain in output.\u003c\/p\u003e\n\u003cp class=\"bm-note\"\u003eA downpipe on its own changes both how quickly boost builds and how the car sounds. The honest way to put it: you will feel a difference, but output depends on the tune.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"bm-section\"\u003e\n\u003cdiv class=\"bm-sub\"\u003eCombination with the N20\u003c\/div\u003e\n\u003cp class=\"bm-text\"\u003eThe N20 is an inline-four fitted with a twin-scroll single turbo.\u003cspan class=\"bm-emph\"\u003ethe smaller the displacement, the relatively greater the impact of exhaust resistance\u003c\/span\u003ethe effect of a downpipe tends to show more clearly.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"bm-section\"\u003e\n\u003cdiv class=\"bm-sub\"\u003eStandard specification\u003c\/div\u003e\n\u003cul class=\"bm-list\"\u003e\n\u003cli\u003e\n\u003cstrong\u003eConfiguration\u003c\/strong\u003e: Downpipe\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompatible Engines\u003c\/strong\u003e: N20\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstallation\u003c\/strong\u003e: A bolt-on design for the factory mounting points\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"bm-note\"\u003eMaterial grades, pipe diameters and manufacturing details will be added to this page as soon as we have confirmed them with our supplier. Only the specifications we have verified are listed here.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"bm-section\"\u003e\n\u003cdiv class=\"bm-sub\"\u003eFitment\u003c\/div\u003e\n\u003cp class=\"bm-text\"\u003e\u003cstrong class=\"bm-emph\"\u003eBMW 120i \/ 320i \/ 420i \/ 520i (F-series) (N20)\u003c\/strong\u003ePurpose-built design. Depending on the year, grade, and modification history, adjustment may be needed at installation — please contact us before purchase if you have any questions.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"bm-section\"\u003e\n\u003cdiv class=\"bm-sub\"\u003ePricing and Shipping\u003c\/div\u003e\n\u003cp class=\"bm-text\"\u003eThe listed price \u003cspan class=\"bm-emph\"\u003eincludes shipping, customs duties and customs clearance fees\u003c\/span\u003e. There are no additional costs after the product arrives.\u003c\/p\u003e\n\u003cp class=\"bm-text\"\u003eThis product includes\u003cspan class=\"bm-emph\"\u003eCarries no brand logo engraving\u003c\/span\u003e. Taking the cost of logo work out of the production cost is what feeds back into the price. Nothing that affects performance — material, welding, finishing — has been cut.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"bm-section\"\u003e\n\u003cdiv class=\"bm-sub\"\u003eAfter Your Purchase\u003c\/div\u003e\n\u003cp class=\"bm-text\"\u003eAfter your purchase, please send us your \u003cspan class=\"bm-emph\"\u003evehicle model, year and VIN\u003c\/span\u003e via our contact form. Contacting us is required so we can identify your exact model.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"bm-section\"\u003e\n\u003cdiv class=\"bm-sub\"\u003eAbout Installation\u003c\/div\u003e\n\u003cp class=\"bm-text\"\u003eRemoving and installing the downpipe requires a lift and specialised tools. As it sits in a high-heat area right after the turbo,\u003cspan class=\"bm-emph\"\u003eWe strongly recommend installation at a garage or professional shop\u003c\/span\u003ewe will do so.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"bm-section\"\u003e\n\u003cdiv class=\"bm-sub\"\u003eWarranty\u003c\/div\u003e\n\u003cp class=\"bm-text\"\u003eFrom the day of delivery\u003cspan class=\"bm-emph\"\u003eOne year\u003c\/span\u003edefects caused by the product itself (welding faults, material faults, dimensional faults) will be replaced free of charge.\u003cspan class=\"bm-emph\"\u003eShipping costs for both the return and the replacement are covered by us\u003c\/span\u003ewe will do so.\u003c\/p\u003e\n\u003cp class=\"bm-note\"\u003e- Damage caused by installation work, normal wear from driving, and issues arising from combination with other manufacturers' products are not covered by the warranty.\u003cbr\u003e- When making a claim, please send us your VIN and photos of the affected area.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"bm-section\"\u003e\n\u003cdiv class=\"bm-sub\"\u003eAbout Lead Time\u003c\/div\u003e\n\u003cp class=\"bm-text\"\u003eAs these are built to order, dispatch normally takes \u003cspan class=\"bm-emph\"\u003e2–4 weeks\u003c\/span\u003e after order confirmationThis is the required lead time. Depending on production and logistics conditions, delivery may take longer than stated. If you're in a hurry, please contact us before purchasing.\u003c\/p\u003e\n\u003cp class=\"bm-note\"\u003e- Depending on the vehicle's condition, year, and modification history, additional adjustment may be required at installation.\u003cbr\u003e- Weld discolouration and finish may vary slightly between units.\u003cbr\u003e- Exhaust parts are wear items. Please check regularly for exhaust leaks.\u003c\/p\u003e\n\u003cp class=\"bm-note\"\u003eBMW is a registered trademark of BMW AG. This is an aftermarket part and is neither manufactured by nor affiliated with BMW AG.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003c\/div\u003e","brand":"BIMMER+","offers":[{"title":"Default Title","offer_id":49484142313699,"sku":"BMP-DP-F20-001","price":49800.0,"currency_code":"JPY","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0777\/9457\/4563\/files\/hyflow-downpipe-bmw-f20-f21-f30-f31-n20-img1_shopify_0b713650-7af9-4ea8-aaac-5e826388e4bd.jpg?v=1785602528"},{"product_id":"hyflow-downpipe-bmw-f20-f21-f22-f23-b58","title":"HYFLOW™ Downpipe BMW 140i\/240i\/340i\/440i\/540i\/640i\/740i (B58)","description":"\u003cdiv class=\"bm-product\"\u003e\n\n\u003cstyle\u003e\n.bm-product{--bm-text:#111;--bm-sub:#4a5159;--bm-line:rgba(0,0,0,.12);max-width:980px;margin:0 auto;padding:0 22px;font-family:system-ui,-apple-system,Segoe UI,Roboto;color:var(--bm-text);line-height:1.75;font-size:15.5px;}\n.bm-section{margin:48px 0;padding-top:24px;border-top:1px solid var(--bm-line);}\n.bm-section:first-child{border-top:none;margin-top:12px;padding-top:0;}\n.bm-sub{font-size:12.5px;letter-spacing:.14em;text-transform:uppercase;color:var(--bm-sub);margin-bottom:14px;}\n.bm-text{max-width:720px;color:var(--bm-sub);}\n.bm-list{list-style:none;padding:0;margin:0;}\n.bm-list li{padding:10px 0;border-bottom:1px solid var(--bm-line);color:var(--bm-sub);}\n.bm-list li strong{color:var(--bm-text);font-weight:500;}\n.bm-num{list-style:none;padding:0;margin:0;counter-reset:item;}\n.bm-num li{padding:10px 0;border-bottom:1px solid var(--bm-line);color:var(--bm-sub);counter-increment:item;}\n.bm-num li::before{content:counter(item) \".  \";color:var(--bm-text);font-weight:500;}\n.bm-num li ul{margin-top:8px;padding-left:18px;}\n.bm-num li ul li{padding:4px 0;border:none;}\n.bm-note{color:var(--bm-sub);font-size:13.5px;}\n.bm-emph{color:var(--bm-text);font-weight:500;}\n.bm-tbl{width:100%;border-collapse:collapse;font-size:14.5px;}\n.bm-tbl th{text-align:left;padding:10px 14px 10px 0;border-bottom:1px solid var(--bm-line);color:var(--bm-sub);font-size:12.5px;letter-spacing:.08em;font-weight:400;white-space:nowrap;}\n.bm-tbl td{padding:12px 14px 12px 0;border-bottom:1px solid var(--bm-line);color:var(--bm-sub);vertical-align:top;}\n.bm-tbl td:first-child{color:var(--bm-text);font-weight:500;white-space:nowrap;}\n.bm-tbl td:nth-child(2){white-space:nowrap;}\n.bm-here{color:var(--bm-text);font-weight:500;}\n.bm-tag{display:inline-block;font-size:11.5px;letter-spacing:.06em;padding:2px 8px;border:1px solid var(--bm-line);border-radius:3px;color:var(--bm-sub);margin-left:8px;vertical-align:middle;}\n\/* bm-responsive-tbl *\/\n@media (max-width:600px){\n.bm-product{padding:0 16px;font-size:15px;}\n.bm-tbl{font-size:14.5px;}\n.bm-tbl,.bm-tbl tbody,.bm-tbl tr,.bm-tbl td{display:block;width:100%;}\n.bm-tbl tr:first-child{display:none;}\n.bm-tbl tr{padding:14px 0 16px;border-bottom:1px solid var(--bm-line);}\n.bm-tbl tr:last-child{border-bottom:none;}\n.bm-tbl td{border:none;padding:3px 0;white-space:normal;}\n.bm-tbl td:first-child{white-space:normal;font-size:15.5px;padding-bottom:6px;}\n.bm-tbl td:nth-child(2){white-space:normal;}\n.bm-tbl td[data-l]::before{content:attr(data-l) \": \";color:var(--bm-sub);font-size:12.5px;letter-spacing:.04em;}\n.bm-tag{margin-left:6px;}\n}\n\u003c\/style\u003e\n\n\u003cdiv class=\"bm-section\"\u003e\n\u003cdiv class=\"bm-sub\"\u003eProduct Overview\u003c\/div\u003e\n\u003cp class=\"bm-text\"\u003eThe B58 is a 3.0L straight-six single-turbo engine. The factory downpipe is structured to meet emissions regulations and noise requirements, and\u003cspan class=\"bm-emph\"\u003ethe point of greatest resistance in the exhaust flow\u003c\/span\u003eThis is that point. Because it comes right after the turbo, losses here directly affect boost response.\u003c\/p\u003e\n\u003cp class=\"bm-text\"\u003eThe HYFLOW™ downpipe reworks the flow path to secure clean flow from the turbo outlet.\u003cspan class=\"bm-emph\"\u003eWhen back pressure drops, the turbine begins spinning more freely\u003c\/span\u003e, throttle response becomes sharper.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"bm-section\"\u003e\n\u003cdiv class=\"bm-sub\"\u003eWhat Changes with a Downpipe\u003c\/div\u003e\n\u003cp class=\"bm-text\"\u003eExhaust flows in the order turbo → downpipe → mid-pipe → silencer. \u003cspan class=\"bm-emph\"\u003eThe downpipe sits immediately after the turbo\u003c\/span\u003e, where exhaust gas passes through at its highest temperature and pressure in this part of the system.\u003c\/p\u003e\n\u003cul class=\"bm-list\"\u003e\n\u003cli\u003e\n\u003cstrong\u003eReduced back pressure\u003c\/strong\u003e: pressure downstream of the turbine drops. Since the turbine spins on the momentum of the exhaust gas, the lighter the load on the outlet side, the faster it spools up\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBoost response\u003c\/strong\u003e: Turbo lag — the time between pressing the accelerator and boost coming on — is shortened. What you feel is less about peak output and more about\u003cspan class=\"bm-emph\"\u003eSharper mid-range acceleration\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eExhaust note\u003c\/strong\u003e: the factory downpipe also contributes to silencing, so replacing it changes both volume and character. The low end gains body, and high in the rev range you get a metallic edge that carries\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"bm-note\"\u003eWhile an exhaust swap changes the sound at the exit, a downpipe \u003cspan class=\"bm-emph\"\u003echanges the flow from the point closest to the engine\u003c\/span\u003e. Combine the two, and each moves into territory that neither reaches on its own.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"bm-section\"\u003e\n\u003cdiv class=\"bm-sub\"\u003eCombined with ECU tuning\u003c\/div\u003e\n\u003cp class=\"bm-text\"\u003eReplacing the downpipe improves exhaust flow, but\u003cspan class=\"bm-emph\"\u003eThis alone does not produce a major increase in output\u003c\/span\u003e. This is because the factory ECU controls boost pressure and ignition timing on the assumption of a factory exhaust, so changing only the hardware doesn't let the control system keep up.\u003c\/p\u003e\n\u003cp class=\"bm-text\"\u003eA downpipe shows its full potential \u003cspan class=\"bm-emph\"\u003ewhen combined with ECU tuning\u003c\/span\u003e. Improved flow lets boost pressure be raised to match, and only then does it show up as a measurable gain in output.\u003c\/p\u003e\n\u003cp class=\"bm-note\"\u003eA downpipe on its own changes both how quickly boost builds and how the car sounds. The honest way to put it: you will feel a difference, but output depends on the tune.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"bm-section\"\u003e\n\u003cdiv class=\"bm-sub\"\u003eCombination with the B58\u003c\/div\u003e\n\u003cp class=\"bm-text\"\u003eThe B58 runs a twin-scroll single turbo with the exhaust manifold integrated into the cylinder head. The short run to the turbine keeps heat in the gas, and \u003cspan class=\"bm-emph\"\u003eimproving flow beyond that point lets boost response build up more directly\u003c\/span\u003e.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"bm-section\"\u003e\n\u003cdiv class=\"bm-sub\"\u003eStandard specification\u003c\/div\u003e\n\u003cul class=\"bm-list\"\u003e\n\u003cli\u003e\n\u003cstrong\u003eConfiguration\u003c\/strong\u003e: Downpipe\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompatible Engines\u003c\/strong\u003e: B58\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstallation\u003c\/strong\u003e: A bolt-on design for the factory mounting points\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"bm-note\"\u003eMaterial grades, pipe diameters and manufacturing details will be added to this page as soon as we have confirmed them with our supplier. Only the specifications we have verified are listed here.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"bm-section\"\u003e\n\u003cdiv class=\"bm-sub\"\u003eFitment\u003c\/div\u003e\n\u003cp class=\"bm-text\"\u003e\u003cstrong class=\"bm-emph\"\u003eBMW 140i\/240i\/340i\/440i\/540i\/640i\/740i (B58)\u003c\/strong\u003ePurpose-built design. Depending on the year, grade, and modification history, adjustment may be needed at installation — please contact us before purchase if you have any questions.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"bm-section\"\u003e\n\u003cdiv class=\"bm-sub\"\u003ePricing and Shipping\u003c\/div\u003e\n\u003cp class=\"bm-text\"\u003eThe listed price \u003cspan class=\"bm-emph\"\u003eincludes shipping, customs duties and customs clearance fees\u003c\/span\u003e. There are no additional costs after the product arrives.\u003c\/p\u003e\n\u003cp class=\"bm-text\"\u003eThis product includes\u003cspan class=\"bm-emph\"\u003eCarries no brand logo engraving\u003c\/span\u003e. Taking the cost of logo work out of the production cost is what feeds back into the price. Nothing that affects performance — material, welding, finishing — has been cut.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"bm-section\"\u003e\n\u003cdiv class=\"bm-sub\"\u003eAfter Your Purchase\u003c\/div\u003e\n\u003cp class=\"bm-text\"\u003eAfter your purchase, please send us your \u003cspan class=\"bm-emph\"\u003evehicle model, year and VIN\u003c\/span\u003e via our contact form. Contacting us is required so we can identify your exact model.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"bm-section\"\u003e\n\u003cdiv class=\"bm-sub\"\u003eAbout Installation\u003c\/div\u003e\n\u003cp class=\"bm-text\"\u003eRemoving and installing the downpipe requires a lift and specialised tools. As it sits in a high-heat area right after the turbo,\u003cspan class=\"bm-emph\"\u003eWe strongly recommend installation at a garage or professional shop\u003c\/span\u003ewe will do so.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"bm-section\"\u003e\n\u003cdiv class=\"bm-sub\"\u003eWarranty\u003c\/div\u003e\n\u003cp class=\"bm-text\"\u003eFrom the day of delivery\u003cspan class=\"bm-emph\"\u003eOne year\u003c\/span\u003edefects caused by the product itself (welding faults, material faults, dimensional faults) will be replaced free of charge.\u003cspan class=\"bm-emph\"\u003eShipping costs for both the return and the replacement are covered by us\u003c\/span\u003ewe will do so.\u003c\/p\u003e\n\u003cp class=\"bm-note\"\u003e- Damage caused by installation work, normal wear from driving, and issues arising from combination with other manufacturers' products are not covered by the warranty.\u003cbr\u003e- When making a claim, please send us your VIN and photos of the affected area.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"bm-section\"\u003e\n\u003cdiv class=\"bm-sub\"\u003eAbout Lead Time\u003c\/div\u003e\n\u003cp class=\"bm-text\"\u003eAs these are built to order, dispatch normally takes \u003cspan class=\"bm-emph\"\u003e2–4 weeks\u003c\/span\u003e after order confirmationThis is the required lead time. Depending on production and logistics conditions, delivery may take longer than stated. If you're in a hurry, please contact us before purchasing.\u003c\/p\u003e\n\u003cp class=\"bm-note\"\u003e- Depending on the vehicle's condition, year, and modification history, additional adjustment may be required at installation.\u003cbr\u003e- Weld discolouration and finish may vary slightly between units.\u003cbr\u003e- Exhaust parts are wear items. Please check regularly for exhaust leaks.\u003c\/p\u003e\n\u003cp class=\"bm-note\"\u003eBMW is a registered trademark of BMW AG. This is an aftermarket part and is neither manufactured by nor affiliated with BMW AG.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003c\/div\u003e","brand":"BIMMER+","offers":[{"title":"Default Title","offer_id":49484142379235,"sku":"BMP-DP-F20-002","price":42800.0,"currency_code":"JPY","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0777\/9457\/4563\/files\/hyflow-downpipe-bmw-f20-f21-f22-f23-b58-img1_shopify_4765fda5-a02c-4b10-81e8-c886a835b77a.jpg?v=1785602533"},{"product_id":"hyflow-downpipe-bmw-f10-f11-f12-f13-n63","title":"HYFLOW™ Downpipe BMW 550i \/ 650i \/ 750Li \/ X5 \/ X6 (N63)","description":"\u003cdiv class=\"bm-product\"\u003e\n\n\u003cstyle\u003e\n.bm-product{--bm-text:#111;--bm-sub:#4a5159;--bm-line:rgba(0,0,0,.12);max-width:980px;margin:0 auto;padding:0 22px;font-family:system-ui,-apple-system,Segoe UI,Roboto;color:var(--bm-text);line-height:1.75;font-size:15.5px;}\n.bm-section{margin:48px 0;padding-top:24px;border-top:1px solid var(--bm-line);}\n.bm-section:first-child{border-top:none;margin-top:12px;padding-top:0;}\n.bm-sub{font-size:12.5px;letter-spacing:.14em;text-transform:uppercase;color:var(--bm-sub);margin-bottom:14px;}\n.bm-text{max-width:720px;color:var(--bm-sub);}\n.bm-list{list-style:none;padding:0;margin:0;}\n.bm-list li{padding:10px 0;border-bottom:1px solid var(--bm-line);color:var(--bm-sub);}\n.bm-list li strong{color:var(--bm-text);font-weight:500;}\n.bm-num{list-style:none;padding:0;margin:0;counter-reset:item;}\n.bm-num li{padding:10px 0;border-bottom:1px solid var(--bm-line);color:var(--bm-sub);counter-increment:item;}\n.bm-num li::before{content:counter(item) \".  \";color:var(--bm-text);font-weight:500;}\n.bm-num li ul{margin-top:8px;padding-left:18px;}\n.bm-num li ul li{padding:4px 0;border:none;}\n.bm-note{color:var(--bm-sub);font-size:13.5px;}\n.bm-emph{color:var(--bm-text);font-weight:500;}\n.bm-tbl{width:100%;border-collapse:collapse;font-size:14.5px;}\n.bm-tbl th{text-align:left;padding:10px 14px 10px 0;border-bottom:1px solid var(--bm-line);color:var(--bm-sub);font-size:12.5px;letter-spacing:.08em;font-weight:400;white-space:nowrap;}\n.bm-tbl td{padding:12px 14px 12px 0;border-bottom:1px solid var(--bm-line);color:var(--bm-sub);vertical-align:top;}\n.bm-tbl td:first-child{color:var(--bm-text);font-weight:500;white-space:nowrap;}\n.bm-tbl td:nth-child(2){white-space:nowrap;}\n.bm-here{color:var(--bm-text);font-weight:500;}\n.bm-tag{display:inline-block;font-size:11.5px;letter-spacing:.06em;padding:2px 8px;border:1px solid var(--bm-line);border-radius:3px;color:var(--bm-sub);margin-left:8px;vertical-align:middle;}\n\/* bm-responsive-tbl *\/\n@media (max-width:600px){\n.bm-product{padding:0 16px;font-size:15px;}\n.bm-tbl{font-size:14.5px;}\n.bm-tbl,.bm-tbl tbody,.bm-tbl tr,.bm-tbl td{display:block;width:100%;}\n.bm-tbl tr:first-child{display:none;}\n.bm-tbl tr{padding:14px 0 16px;border-bottom:1px solid var(--bm-line);}\n.bm-tbl tr:last-child{border-bottom:none;}\n.bm-tbl td{border:none;padding:3px 0;white-space:normal;}\n.bm-tbl td:first-child{white-space:normal;font-size:15.5px;padding-bottom:6px;}\n.bm-tbl td:nth-child(2){white-space:normal;}\n.bm-tbl td[data-l]::before{content:attr(data-l) \": \";color:var(--bm-sub);font-size:12.5px;letter-spacing:.04em;}\n.bm-tag{margin-left:6px;}\n}\n\u003c\/style\u003e\n\n\u003cdiv class=\"bm-section\"\u003e\n\u003cdiv class=\"bm-sub\"\u003eProduct Overview\u003c\/div\u003e\n\u003cp class=\"bm-text\"\u003eThe N63 is a 4.4-litre twin-turbo V8. The factory downpipe is built to meet emissions regulations and quietness requirements, and\u003cspan class=\"bm-emph\"\u003ethe point of greatest resistance in the exhaust flow\u003c\/span\u003eThis is that point. Because it comes right after the turbo, losses here directly affect boost response.\u003c\/p\u003e\n\u003cp class=\"bm-text\"\u003eThe HYFLOW™ downpipe reworks the flow path to secure clean flow from the turbo outlet.\u003cspan class=\"bm-emph\"\u003eWhen back pressure drops, the turbine begins spinning more freely\u003c\/span\u003e, throttle response becomes sharper.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"bm-section\"\u003e\n\u003cdiv class=\"bm-sub\"\u003eWhat Changes with a Downpipe\u003c\/div\u003e\n\u003cp class=\"bm-text\"\u003eExhaust flows in the order turbo → downpipe → mid-pipe → silencer. \u003cspan class=\"bm-emph\"\u003eThe downpipe sits immediately after the turbo\u003c\/span\u003e, where exhaust gas passes through at its highest temperature and pressure in this part of the system.\u003c\/p\u003e\n\u003cul class=\"bm-list\"\u003e\n\u003cli\u003e\n\u003cstrong\u003eReduced back pressure\u003c\/strong\u003e: pressure downstream of the turbine drops. Since the turbine spins on the momentum of the exhaust gas, the lighter the load on the outlet side, the faster it spools up\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBoost response\u003c\/strong\u003e: Turbo lag — the time between pressing the accelerator and boost coming on — is shortened. What you feel is less about peak output and more about\u003cspan class=\"bm-emph\"\u003eSharper mid-range acceleration\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eExhaust note\u003c\/strong\u003e: the factory downpipe also contributes to silencing, so replacing it changes both volume and character. The low end gains body, and high in the rev range you get a metallic edge that carries\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"bm-note\"\u003eWhile an exhaust swap changes the sound at the exit, a downpipe \u003cspan class=\"bm-emph\"\u003echanges the flow from the point closest to the engine\u003c\/span\u003e. Combine the two, and each moves into territory that neither reaches on its own.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"bm-section\"\u003e\n\u003cdiv class=\"bm-sub\"\u003eCombined with ECU tuning\u003c\/div\u003e\n\u003cp class=\"bm-text\"\u003eReplacing the downpipe improves exhaust flow, but\u003cspan class=\"bm-emph\"\u003eThis alone does not produce a major increase in output\u003c\/span\u003e. This is because the factory ECU controls boost pressure and ignition timing on the assumption of a factory exhaust, so changing only the hardware doesn't let the control system keep up.\u003c\/p\u003e\n\u003cp class=\"bm-text\"\u003eA downpipe shows its full potential \u003cspan class=\"bm-emph\"\u003ewhen combined with ECU tuning\u003c\/span\u003e. Improved flow lets boost pressure be raised to match, and only then does it show up as a measurable gain in output.\u003c\/p\u003e\n\u003cp class=\"bm-note\"\u003eA downpipe on its own changes both how quickly boost builds and how the car sounds. The honest way to put it: you will feel a difference, but output depends on the tune.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"bm-section\"\u003e\n\u003cdiv class=\"bm-sub\"\u003ePairing with the N63\u003c\/div\u003e\n\u003cp class=\"bm-text\"\u003eThe N63 is a hot-V layout with the turbos positioned inside the V bank. Because the exhaust routing is compact,\u003cspan class=\"bm-emph\"\u003eResistance in the downpipe feeds directly back to the turbine\u003c\/span\u003e.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"bm-section\"\u003e\n\u003cdiv class=\"bm-sub\"\u003eStandard specification\u003c\/div\u003e\n\u003cul class=\"bm-list\"\u003e\n\u003cli\u003e\n\u003cstrong\u003eConfiguration\u003c\/strong\u003e: Downpipe\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompatible Engines\u003c\/strong\u003e: N63\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstallation\u003c\/strong\u003e: A bolt-on design for the factory mounting points\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"bm-note\"\u003eMaterial grades, pipe diameters and manufacturing details will be added to this page as soon as we have confirmed them with our supplier. Only the specifications we have verified are listed here.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"bm-section\"\u003e\n\u003cdiv class=\"bm-sub\"\u003eFitment\u003c\/div\u003e\n\u003cp class=\"bm-text\"\u003e\u003cstrong class=\"bm-emph\"\u003eBMW 550i \/ 650i \/ 750Li \/ X5 \/ X6 (N63)\u003c\/strong\u003ePurpose-built design. Depending on the year, grade, and modification history, adjustment may be needed at installation — please contact us before purchase if you have any questions.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"bm-section\"\u003e\n\u003cdiv class=\"bm-sub\"\u003ePricing and Shipping\u003c\/div\u003e\n\u003cp class=\"bm-text\"\u003eThe listed price \u003cspan class=\"bm-emph\"\u003eincludes shipping, customs duties and customs clearance fees\u003c\/span\u003e. There are no additional costs after the product arrives.\u003c\/p\u003e\n\u003cp class=\"bm-text\"\u003eThis product includes\u003cspan class=\"bm-emph\"\u003eCarries no brand logo engraving\u003c\/span\u003e. Taking the cost of logo work out of the production cost is what feeds back into the price. Nothing that affects performance — material, welding, finishing — has been cut.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"bm-section\"\u003e\n\u003cdiv class=\"bm-sub\"\u003eAfter Your Purchase\u003c\/div\u003e\n\u003cp class=\"bm-text\"\u003eAfter your purchase, please send us your \u003cspan class=\"bm-emph\"\u003evehicle model, year and VIN\u003c\/span\u003e via our contact form. Contacting us is required so we can identify your exact model.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"bm-section\"\u003e\n\u003cdiv class=\"bm-sub\"\u003eAbout Installation\u003c\/div\u003e\n\u003cp class=\"bm-text\"\u003eRemoving and installing the downpipe requires a lift and specialised tools. As it sits in a high-heat area right after the turbo,\u003cspan class=\"bm-emph\"\u003eWe strongly recommend installation at a garage or professional shop\u003c\/span\u003ewe will do so.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"bm-section\"\u003e\n\u003cdiv class=\"bm-sub\"\u003eWarranty\u003c\/div\u003e\n\u003cp class=\"bm-text\"\u003eFrom the day of delivery\u003cspan class=\"bm-emph\"\u003eOne year\u003c\/span\u003edefects caused by the product itself (welding faults, material faults, dimensional faults) will be replaced free of charge.\u003cspan class=\"bm-emph\"\u003eShipping costs for both the return and the replacement are covered by us\u003c\/span\u003ewe will do so.\u003c\/p\u003e\n\u003cp class=\"bm-note\"\u003e- Damage caused by installation work, normal wear from driving, and issues arising from combination with other manufacturers' products are not covered by the warranty.\u003cbr\u003e- When making a claim, please send us your VIN and photos of the affected area.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"bm-section\"\u003e\n\u003cdiv class=\"bm-sub\"\u003eAbout Lead Time\u003c\/div\u003e\n\u003cp class=\"bm-text\"\u003eAs these are built to order, dispatch normally takes \u003cspan class=\"bm-emph\"\u003e2–4 weeks\u003c\/span\u003e after order confirmationThis is the required lead time. Depending on production and logistics conditions, delivery may take longer than stated. If you're in a hurry, please contact us before purchasing.\u003c\/p\u003e\n\u003cp class=\"bm-note\"\u003e- Depending on the vehicle's condition, year, and modification history, additional adjustment may be required at installation.\u003cbr\u003e- Weld discolouration and finish may vary slightly between units.\u003cbr\u003e- Exhaust parts are wear items. Please check regularly for exhaust leaks.\u003c\/p\u003e\n\u003cp class=\"bm-note\"\u003eBMW is a registered trademark of BMW AG. This is an aftermarket part and is neither manufactured by nor affiliated with BMW AG.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003c\/div\u003e","brand":"BIMMER+","offers":[{"title":"Default Title","offer_id":49484142510307,"sku":"BMP-DP-F10-002","price":85800.0,"currency_code":"JPY","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0777\/9457\/4563\/files\/hyflow-downpipe-bmw-f10-f11-f12-f13-n63-img1_shopify_db3ff805-ca32-4ee2-9b60-7ffbe525a4ab.jpg?v=1785602544"},{"product_id":"hyflow-downpipe-bmw-g20-g22-g29-b58","title":"HYFLOW™ Downpipe BMW M340i G20 \/ M440i G22 \/ Z4 G29 (B58)","description":"\u003cdiv class=\"bm-product\"\u003e\n\n\u003cstyle\u003e\n.bm-product{--bm-text:#111;--bm-sub:#4a5159;--bm-line:rgba(0,0,0,.12);max-width:980px;margin:0 auto;padding:0 22px;font-family:system-ui,-apple-system,Segoe UI,Roboto;color:var(--bm-text);line-height:1.75;font-size:15.5px;}\n.bm-section{margin:48px 0;padding-top:24px;border-top:1px solid var(--bm-line);}\n.bm-section:first-child{border-top:none;margin-top:12px;padding-top:0;}\n.bm-sub{font-size:12.5px;letter-spacing:.14em;text-transform:uppercase;color:var(--bm-sub);margin-bottom:14px;}\n.bm-text{max-width:720px;color:var(--bm-sub);}\n.bm-list{list-style:none;padding:0;margin:0;}\n.bm-list li{padding:10px 0;border-bottom:1px solid var(--bm-line);color:var(--bm-sub);}\n.bm-list li strong{color:var(--bm-text);font-weight:500;}\n.bm-num{list-style:none;padding:0;margin:0;counter-reset:item;}\n.bm-num li{padding:10px 0;border-bottom:1px solid var(--bm-line);color:var(--bm-sub);counter-increment:item;}\n.bm-num li::before{content:counter(item) \".  \";color:var(--bm-text);font-weight:500;}\n.bm-num li ul{margin-top:8px;padding-left:18px;}\n.bm-num li ul li{padding:4px 0;border:none;}\n.bm-note{color:var(--bm-sub);font-size:13.5px;}\n.bm-emph{color:var(--bm-text);font-weight:500;}\n.bm-tbl{width:100%;border-collapse:collapse;font-size:14.5px;}\n.bm-tbl th{text-align:left;padding:10px 14px 10px 0;border-bottom:1px solid var(--bm-line);color:var(--bm-sub);font-size:12.5px;letter-spacing:.08em;font-weight:400;white-space:nowrap;}\n.bm-tbl td{padding:12px 14px 12px 0;border-bottom:1px solid var(--bm-line);color:var(--bm-sub);vertical-align:top;}\n.bm-tbl td:first-child{color:var(--bm-text);font-weight:500;white-space:nowrap;}\n.bm-tbl td:nth-child(2){white-space:nowrap;}\n.bm-here{color:var(--bm-text);font-weight:500;}\n.bm-tag{display:inline-block;font-size:11.5px;letter-spacing:.06em;padding:2px 8px;border:1px solid var(--bm-line);border-radius:3px;color:var(--bm-sub);margin-left:8px;vertical-align:middle;}\n\/* bm-responsive-tbl *\/\n@media (max-width:600px){\n.bm-product{padding:0 16px;font-size:15px;}\n.bm-tbl{font-size:14.5px;}\n.bm-tbl,.bm-tbl tbody,.bm-tbl tr,.bm-tbl td{display:block;width:100%;}\n.bm-tbl tr:first-child{display:none;}\n.bm-tbl tr{padding:14px 0 16px;border-bottom:1px solid var(--bm-line);}\n.bm-tbl tr:last-child{border-bottom:none;}\n.bm-tbl td{border:none;padding:3px 0;white-space:normal;}\n.bm-tbl td:first-child{white-space:normal;font-size:15.5px;padding-bottom:6px;}\n.bm-tbl td:nth-child(2){white-space:normal;}\n.bm-tbl td[data-l]::before{content:attr(data-l) \": \";color:var(--bm-sub);font-size:12.5px;letter-spacing:.04em;}\n.bm-tag{margin-left:6px;}\n}\n\u003c\/style\u003e\n\n\u003cdiv class=\"bm-section\"\u003e\n\u003cdiv class=\"bm-sub\"\u003eProduct Overview\u003c\/div\u003e\n\u003cp class=\"bm-text\"\u003eThe B58 is a 3.0L straight-six single-turbo engine. The factory downpipe is structured to meet emissions regulations and noise requirements, and\u003cspan class=\"bm-emph\"\u003ethe point of greatest resistance in the exhaust flow\u003c\/span\u003eThis is that point. Because it comes right after the turbo, losses here directly affect boost response.\u003c\/p\u003e\n\u003cp class=\"bm-text\"\u003eThe HYFLOW™ downpipe reworks the flow path to secure clean flow from the turbo outlet.\u003cspan class=\"bm-emph\"\u003eWhen back pressure drops, the turbine begins spinning more freely\u003c\/span\u003e, throttle response becomes sharper.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"bm-section\"\u003e\n\u003cdiv class=\"bm-sub\"\u003eWhat Changes with a Downpipe\u003c\/div\u003e\n\u003cp class=\"bm-text\"\u003eExhaust flows in the order turbo → downpipe → mid-pipe → silencer. \u003cspan class=\"bm-emph\"\u003eThe downpipe sits immediately after the turbo\u003c\/span\u003e, where exhaust gas passes through at its highest temperature and pressure in this part of the system.\u003c\/p\u003e\n\u003cul class=\"bm-list\"\u003e\n\u003cli\u003e\n\u003cstrong\u003eReduced back pressure\u003c\/strong\u003e: pressure downstream of the turbine drops. Since the turbine spins on the momentum of the exhaust gas, the lighter the load on the outlet side, the faster it spools up\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBoost response\u003c\/strong\u003e: Turbo lag — the time between pressing the accelerator and boost coming on — is shortened. What you feel is less about peak output and more about\u003cspan class=\"bm-emph\"\u003eSharper mid-range acceleration\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eExhaust note\u003c\/strong\u003e: the factory downpipe also contributes to silencing, so replacing it changes both volume and character. The low end gains body, and high in the rev range you get a metallic edge that carries\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"bm-note\"\u003eWhile an exhaust swap changes the sound at the exit, a downpipe \u003cspan class=\"bm-emph\"\u003echanges the flow from the point closest to the engine\u003c\/span\u003e. Combine the two, and each moves into territory that neither reaches on its own.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"bm-section\"\u003e\n\u003cdiv class=\"bm-sub\"\u003eCombined with ECU tuning\u003c\/div\u003e\n\u003cp class=\"bm-text\"\u003eReplacing the downpipe improves exhaust flow, but\u003cspan class=\"bm-emph\"\u003eThis alone does not produce a major increase in output\u003c\/span\u003e. This is because the factory ECU controls boost pressure and ignition timing on the assumption of a factory exhaust, so changing only the hardware doesn't let the control system keep up.\u003c\/p\u003e\n\u003cp class=\"bm-text\"\u003eA downpipe shows its full potential \u003cspan class=\"bm-emph\"\u003ewhen combined with ECU tuning\u003c\/span\u003e. Improved flow lets boost pressure be raised to match, and only then does it show up as a measurable gain in output.\u003c\/p\u003e\n\u003cp class=\"bm-note\"\u003eA downpipe on its own changes both how quickly boost builds and how the car sounds. The honest way to put it: you will feel a difference, but output depends on the tune.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"bm-section\"\u003e\n\u003cdiv class=\"bm-sub\"\u003eCombination with the B58\u003c\/div\u003e\n\u003cp class=\"bm-text\"\u003eThe B58 runs a twin-scroll single turbo with the exhaust manifold integrated into the cylinder head. The short run to the turbine keeps heat in the gas, and \u003cspan class=\"bm-emph\"\u003eimproving flow beyond that point lets boost response build up more directly\u003c\/span\u003e.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"bm-section\"\u003e\n\u003cdiv class=\"bm-sub\"\u003eStandard specification\u003c\/div\u003e\n\u003cul class=\"bm-list\"\u003e\n\u003cli\u003e\n\u003cstrong\u003eConfiguration\u003c\/strong\u003e: Downpipe\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompatible Engines\u003c\/strong\u003e: B58\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstallation\u003c\/strong\u003e: A bolt-on design for the factory mounting points\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"bm-note\"\u003eMaterial grades, pipe diameters and manufacturing details will be added to this page as soon as we have confirmed them with our supplier. Only the specifications we have verified are listed here.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"bm-section\"\u003e\n\u003cdiv class=\"bm-sub\"\u003eFitment\u003c\/div\u003e\n\u003cp class=\"bm-text\"\u003e\u003cstrong class=\"bm-emph\"\u003eBMW M340i G20 \/ M440i G22 \/ Z4 G29 (B58)\u003c\/strong\u003ePurpose-built design. Depending on the year, grade, and modification history, adjustment may be needed at installation — please contact us before purchase if you have any questions.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"bm-section\"\u003e\n\u003cdiv class=\"bm-sub\"\u003ePricing and Shipping\u003c\/div\u003e\n\u003cp class=\"bm-text\"\u003eThe listed price \u003cspan class=\"bm-emph\"\u003eincludes shipping, customs duties and customs clearance fees\u003c\/span\u003e. There are no additional costs after the product arrives.\u003c\/p\u003e\n\u003cp class=\"bm-text\"\u003eThis product includes\u003cspan class=\"bm-emph\"\u003eCarries no brand logo engraving\u003c\/span\u003e. Taking the cost of logo work out of the production cost is what feeds back into the price. Nothing that affects performance — material, welding, finishing — has been cut.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"bm-section\"\u003e\n\u003cdiv class=\"bm-sub\"\u003eAfter Your Purchase\u003c\/div\u003e\n\u003cp class=\"bm-text\"\u003eAfter your purchase, please send us your \u003cspan class=\"bm-emph\"\u003evehicle model, year and VIN\u003c\/span\u003e via our contact form. Contacting us is required so we can identify your exact model.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"bm-section\"\u003e\n\u003cdiv class=\"bm-sub\"\u003eAbout Installation\u003c\/div\u003e\n\u003cp class=\"bm-text\"\u003eRemoving and installing the downpipe requires a lift and specialised tools. As it sits in a high-heat area right after the turbo,\u003cspan class=\"bm-emph\"\u003eWe strongly recommend installation at a garage or professional shop\u003c\/span\u003ewe will do so.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"bm-section\"\u003e\n\u003cdiv class=\"bm-sub\"\u003eWarranty\u003c\/div\u003e\n\u003cp class=\"bm-text\"\u003eFrom the day of delivery\u003cspan class=\"bm-emph\"\u003eOne year\u003c\/span\u003edefects caused by the product itself (welding faults, material faults, dimensional faults) will be replaced free of charge.\u003cspan class=\"bm-emph\"\u003eShipping costs for both the return and the replacement are covered by us\u003c\/span\u003ewe will do so.\u003c\/p\u003e\n\u003cp class=\"bm-note\"\u003e- Damage caused by installation work, normal wear from driving, and issues arising from combination with other manufacturers' products are not covered by the warranty.\u003cbr\u003e- When making a claim, please send us your VIN and photos of the affected area.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"bm-section\"\u003e\n\u003cdiv class=\"bm-sub\"\u003eAbout Lead Time\u003c\/div\u003e\n\u003cp class=\"bm-text\"\u003eAs these are built to order, dispatch normally takes \u003cspan class=\"bm-emph\"\u003e2–4 weeks\u003c\/span\u003e after order confirmationThis is the required lead time. Depending on production and logistics conditions, delivery may take longer than stated. If you're in a hurry, please contact us before purchasing.\u003c\/p\u003e\n\u003cp class=\"bm-note\"\u003e- Depending on the vehicle's condition, year, and modification history, additional adjustment may be required at installation.\u003cbr\u003e- Weld discolouration and finish may vary slightly between units.\u003cbr\u003e- Exhaust parts are wear items. Please check regularly for exhaust leaks.\u003c\/p\u003e\n\u003cp class=\"bm-note\"\u003eBMW is a registered trademark of BMW AG. This is an aftermarket part and is neither manufactured by nor affiliated with BMW AG.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003c\/div\u003e","brand":"BIMMER+","offers":[{"title":"Default Title","offer_id":49484142543075,"sku":"BMP-DP-G20-001","price":42800.0,"currency_code":"JPY","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0777\/9457\/4563\/files\/hyflow-downpipe-bmw-g20-g22-g29-b58-img1_shopify_88c6e50f-91ce-443c-a410-6fa1b462bdcb.jpg?v=1785602549"},{"product_id":"hyflow-downpipe-bmw-f90-s63","title":"HYFLOW™ Downpipe BMW M5 F90 (S63)","description":"\u003cdiv class=\"bm-product\"\u003e\n\n\u003cstyle\u003e\n.bm-product{--bm-text:#111;--bm-sub:#4a5159;--bm-line:rgba(0,0,0,.12);max-width:980px;margin:0 auto;padding:0 22px;font-family:system-ui,-apple-system,Segoe UI,Roboto;color:var(--bm-text);line-height:1.75;font-size:15.5px;}\n.bm-section{margin:48px 0;padding-top:24px;border-top:1px solid var(--bm-line);}\n.bm-section:first-child{border-top:none;margin-top:12px;padding-top:0;}\n.bm-sub{font-size:12.5px;letter-spacing:.14em;text-transform:uppercase;color:var(--bm-sub);margin-bottom:14px;}\n.bm-text{max-width:720px;color:var(--bm-sub);}\n.bm-list{list-style:none;padding:0;margin:0;}\n.bm-list li{padding:10px 0;border-bottom:1px solid var(--bm-line);color:var(--bm-sub);}\n.bm-list li strong{color:var(--bm-text);font-weight:500;}\n.bm-num{list-style:none;padding:0;margin:0;counter-reset:item;}\n.bm-num li{padding:10px 0;border-bottom:1px solid var(--bm-line);color:var(--bm-sub);counter-increment:item;}\n.bm-num li::before{content:counter(item) \".  \";color:var(--bm-text);font-weight:500;}\n.bm-num li ul{margin-top:8px;padding-left:18px;}\n.bm-num li ul li{padding:4px 0;border:none;}\n.bm-note{color:var(--bm-sub);font-size:13.5px;}\n.bm-emph{color:var(--bm-text);font-weight:500;}\n.bm-tbl{width:100%;border-collapse:collapse;font-size:14.5px;}\n.bm-tbl th{text-align:left;padding:10px 14px 10px 0;border-bottom:1px solid var(--bm-line);color:var(--bm-sub);font-size:12.5px;letter-spacing:.08em;font-weight:400;white-space:nowrap;}\n.bm-tbl td{padding:12px 14px 12px 0;border-bottom:1px solid var(--bm-line);color:var(--bm-sub);vertical-align:top;}\n.bm-tbl td:first-child{color:var(--bm-text);font-weight:500;white-space:nowrap;}\n.bm-tbl td:nth-child(2){white-space:nowrap;}\n.bm-here{color:var(--bm-text);font-weight:500;}\n.bm-tag{display:inline-block;font-size:11.5px;letter-spacing:.06em;padding:2px 8px;border:1px solid var(--bm-line);border-radius:3px;color:var(--bm-sub);margin-left:8px;vertical-align:middle;}\n\/* bm-responsive-tbl *\/\n@media (max-width:600px){\n.bm-product{padding:0 16px;font-size:15px;}\n.bm-tbl{font-size:14.5px;}\n.bm-tbl,.bm-tbl tbody,.bm-tbl tr,.bm-tbl td{display:block;width:100%;}\n.bm-tbl tr:first-child{display:none;}\n.bm-tbl tr{padding:14px 0 16px;border-bottom:1px solid var(--bm-line);}\n.bm-tbl tr:last-child{border-bottom:none;}\n.bm-tbl td{border:none;padding:3px 0;white-space:normal;}\n.bm-tbl td:first-child{white-space:normal;font-size:15.5px;padding-bottom:6px;}\n.bm-tbl td:nth-child(2){white-space:normal;}\n.bm-tbl td[data-l]::before{content:attr(data-l) \": \";color:var(--bm-sub);font-size:12.5px;letter-spacing:.04em;}\n.bm-tag{margin-left:6px;}\n}\n\u003c\/style\u003e\n\n\u003cdiv class=\"bm-section\"\u003e\n\u003cdiv class=\"bm-sub\"\u003eProduct Overview\u003c\/div\u003e\n\u003cp class=\"bm-text\"\u003eThe S63 is a 4.4L V8 twin-turbo engine. The factory downpipe is structured to meet emissions regulations and quietness, and\u003cspan class=\"bm-emph\"\u003ethe point of greatest resistance in the exhaust flow\u003c\/span\u003eThis is that point. Because it comes right after the turbo, losses here directly affect boost response.\u003c\/p\u003e\n\u003cp class=\"bm-text\"\u003eThe HYFLOW™ downpipe reworks the flow path to secure clean flow from the turbo outlet.\u003cspan class=\"bm-emph\"\u003eWhen back pressure drops, the turbine begins spinning more freely\u003c\/span\u003e, throttle response becomes sharper.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"bm-section\"\u003e\n\u003cdiv class=\"bm-sub\"\u003eWhat Changes with a Downpipe\u003c\/div\u003e\n\u003cp class=\"bm-text\"\u003eExhaust flows in the order turbo → downpipe → mid-pipe → silencer. \u003cspan class=\"bm-emph\"\u003eThe downpipe sits immediately after the turbo\u003c\/span\u003e, where exhaust gas passes through at its highest temperature and pressure in this part of the system.\u003c\/p\u003e\n\u003cul class=\"bm-list\"\u003e\n\u003cli\u003e\n\u003cstrong\u003eReduced back pressure\u003c\/strong\u003e: pressure downstream of the turbine drops. Since the turbine spins on the momentum of the exhaust gas, the lighter the load on the outlet side, the faster it spools up\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBoost response\u003c\/strong\u003e: Turbo lag — the time between pressing the accelerator and boost coming on — is shortened. What you feel is less about peak output and more about\u003cspan class=\"bm-emph\"\u003eSharper mid-range acceleration\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eExhaust note\u003c\/strong\u003e: the factory downpipe also contributes to silencing, so replacing it changes both volume and character. The low end gains body, and high in the rev range you get a metallic edge that carries\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"bm-note\"\u003eWhile an exhaust swap changes the sound at the exit, a downpipe \u003cspan class=\"bm-emph\"\u003echanges the flow from the point closest to the engine\u003c\/span\u003e. Combine the two, and each moves into territory that neither reaches on its own.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"bm-section\"\u003e\n\u003cdiv class=\"bm-sub\"\u003eCombined with ECU tuning\u003c\/div\u003e\n\u003cp class=\"bm-text\"\u003eReplacing the downpipe improves exhaust flow, but\u003cspan class=\"bm-emph\"\u003eThis alone does not produce a major increase in output\u003c\/span\u003e. This is because the factory ECU controls boost pressure and ignition timing on the assumption of a factory exhaust, so changing only the hardware doesn't let the control system keep up.\u003c\/p\u003e\n\u003cp class=\"bm-text\"\u003eA downpipe shows its full potential \u003cspan class=\"bm-emph\"\u003ewhen combined with ECU tuning\u003c\/span\u003e. Improved flow lets boost pressure be raised to match, and only then does it show up as a measurable gain in output.\u003c\/p\u003e\n\u003cp class=\"bm-note\"\u003eA downpipe on its own changes both how quickly boost builds and how the car sounds. The honest way to put it: you will feel a difference, but output depends on the tune.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"bm-section\"\u003e\n\u003cdiv class=\"bm-sub\"\u003eCombination with the S63\u003c\/div\u003e\n\u003cp class=\"bm-text\"\u003eThe S63 places its turbines inside the V of the engine banks\u003cspan class=\"bm-emph\"\u003eHot-V layout\u003c\/span\u003eThis is the case. In exchange for a short, compact exhaust path, the structure also makes it easier for downstream resistance to transmit back to the turbine.\u003cbr\u003e\u003cbr\u003eBecause the downpipe sits right after the turbo,\u003cspan class=\"bm-emph\"\u003eThis is especially effective on V8 twin-turbo engines\u003c\/span\u003eis the part.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"bm-section\"\u003e\n\u003cdiv class=\"bm-sub\"\u003eStandard specification\u003c\/div\u003e\n\u003cul class=\"bm-list\"\u003e\n\u003cli\u003e\n\u003cstrong\u003eConfiguration\u003c\/strong\u003e: Downpipe\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompatible Engines\u003c\/strong\u003e: S63\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstallation\u003c\/strong\u003e: A bolt-on design for the factory mounting points\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"bm-note\"\u003eMaterial grades, pipe diameters and manufacturing details will be added to this page as soon as we have confirmed them with our supplier. Only the specifications we have verified are listed here.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"bm-section\"\u003e\n\u003cdiv class=\"bm-sub\"\u003eFitment\u003c\/div\u003e\n\u003cp class=\"bm-text\"\u003e\u003cstrong class=\"bm-emph\"\u003eBMW M5 F90 (S63)\u003c\/strong\u003ePurpose-built design. Depending on the year, grade, and modification history, adjustment may be needed at installation — please contact us before purchase if you have any questions.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"bm-section\"\u003e\n\u003cdiv class=\"bm-sub\"\u003ePricing and Shipping\u003c\/div\u003e\n\u003cp class=\"bm-text\"\u003eThe listed price \u003cspan class=\"bm-emph\"\u003eincludes shipping, customs duties and customs clearance fees\u003c\/span\u003e. There are no additional costs after the product arrives.\u003c\/p\u003e\n\u003cp class=\"bm-text\"\u003eThis product includes\u003cspan class=\"bm-emph\"\u003eCarries no brand logo engraving\u003c\/span\u003e. Taking the cost of logo work out of the production cost is what feeds back into the price. Nothing that affects performance — material, welding, finishing — has been cut.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"bm-section\"\u003e\n\u003cdiv class=\"bm-sub\"\u003eAfter Your Purchase\u003c\/div\u003e\n\u003cp class=\"bm-text\"\u003eAfter your purchase, please send us your \u003cspan class=\"bm-emph\"\u003evehicle model, year and VIN\u003c\/span\u003e via our contact form. Contacting us is required so we can identify your exact model.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"bm-section\"\u003e\n\u003cdiv class=\"bm-sub\"\u003eAbout Installation\u003c\/div\u003e\n\u003cp class=\"bm-text\"\u003eRemoving and installing the downpipe requires a lift and specialised tools. As it sits in a high-heat area right after the turbo,\u003cspan class=\"bm-emph\"\u003eWe strongly recommend installation at a garage or professional shop\u003c\/span\u003ewe will do so.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"bm-section\"\u003e\n\u003cdiv class=\"bm-sub\"\u003eWarranty\u003c\/div\u003e\n\u003cp class=\"bm-text\"\u003eFrom the day of delivery\u003cspan class=\"bm-emph\"\u003eOne year\u003c\/span\u003edefects caused by the product itself (welding faults, material faults, dimensional faults) will be replaced free of charge.\u003cspan class=\"bm-emph\"\u003eShipping costs for both the return and the replacement are covered by us\u003c\/span\u003ewe will do so.\u003c\/p\u003e\n\u003cp class=\"bm-note\"\u003e- Damage caused by installation work, normal wear from driving, and issues arising from combination with other manufacturers' products are not covered by the warranty.\u003cbr\u003e- When making a claim, please send us your VIN and photos of the affected area.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"bm-section\"\u003e\n\u003cdiv class=\"bm-sub\"\u003eAbout Lead Time\u003c\/div\u003e\n\u003cp class=\"bm-text\"\u003eAs these are built to order, dispatch normally takes \u003cspan class=\"bm-emph\"\u003e2–4 weeks\u003c\/span\u003e after order confirmationThis is the required lead time. Depending on production and logistics conditions, delivery may take longer than stated. If you're in a hurry, please contact us before purchasing.\u003c\/p\u003e\n\u003cp class=\"bm-note\"\u003e- Depending on the vehicle's condition, year, and modification history, additional adjustment may be required at installation.\u003cbr\u003e- Weld discolouration and finish may vary slightly between units.\u003cbr\u003e- Exhaust parts are wear items. Please check regularly for exhaust leaks.\u003c\/p\u003e\n\u003cp class=\"bm-note\"\u003eBMW is a registered trademark of BMW AG. This is an aftermarket part and is neither manufactured by nor affiliated with BMW AG.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003c\/div\u003e","brand":"BIMMER+","offers":[{"title":"Default Title","offer_id":49484142608611,"sku":"BMP-DP-F90-002","price":104800.0,"currency_code":"JPY","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0777\/9457\/4563\/files\/hyflow-downpipe-bmw-f90-s63-img1_shopify_a667486c-3cd5-4533-a0a6-e8b1c298854a.jpg?v=1785602554"},{"product_id":"hyflow-titanium-midpipe-bmw-g87-s58","title":"HYFLOW™ Titanium Single Mid-Pipe with Brace BMW M2 G87 (S58)","description":"\u003cdiv class=\"bm-product\"\u003e\n\n\u003cstyle\u003e\n.bm-product{--bm-text:#111;--bm-sub:#4a5159;--bm-line:rgba(0,0,0,.12);max-width:980px;margin:0 auto;padding:0 22px;font-family:system-ui,-apple-system,Segoe UI,Roboto;color:var(--bm-text);line-height:1.75;font-size:15.5px;}\n.bm-section{margin:48px 0;padding-top:24px;border-top:1px solid var(--bm-line);}\n.bm-section:first-child{border-top:none;margin-top:12px;padding-top:0;}\n.bm-sub{font-size:12.5px;letter-spacing:.14em;text-transform:uppercase;color:var(--bm-sub);margin-bottom:14px;}\n.bm-text{max-width:720px;color:var(--bm-sub);}\n.bm-list{list-style:none;padding:0;margin:0;}\n.bm-list li{padding:10px 0;border-bottom:1px solid var(--bm-line);color:var(--bm-sub);}\n.bm-list li strong{color:var(--bm-text);font-weight:500;}\n.bm-num{list-style:none;padding:0;margin:0;counter-reset:item;}\n.bm-num li{padding:10px 0;border-bottom:1px solid var(--bm-line);color:var(--bm-sub);counter-increment:item;}\n.bm-num li::before{content:counter(item) \".  \";color:var(--bm-text);font-weight:500;}\n.bm-num li ul{margin-top:8px;padding-left:18px;}\n.bm-num li ul li{padding:4px 0;border:none;}\n.bm-note{color:var(--bm-sub);font-size:13.5px;}\n.bm-emph{color:var(--bm-text);font-weight:500;}\n.bm-tbl{width:100%;border-collapse:collapse;font-size:14.5px;}\n.bm-tbl th{text-align:left;padding:10px 14px 10px 0;border-bottom:1px solid var(--bm-line);color:var(--bm-sub);font-size:12.5px;letter-spacing:.08em;font-weight:400;white-space:nowrap;}\n.bm-tbl td{padding:12px 14px 12px 0;border-bottom:1px solid var(--bm-line);color:var(--bm-sub);vertical-align:top;}\n.bm-tbl td:first-child{color:var(--bm-text);font-weight:500;white-space:nowrap;}\n.bm-tbl td:nth-child(2){white-space:nowrap;}\n.bm-here{color:var(--bm-text);font-weight:500;}\n.bm-tag{display:inline-block;font-size:11.5px;letter-spacing:.06em;padding:2px 8px;border:1px solid var(--bm-line);border-radius:3px;color:var(--bm-sub);margin-left:8px;vertical-align:middle;}\n\/* bm-responsive-tbl *\/\n@media (max-width:600px){\n.bm-product{padding:0 16px;font-size:15px;}\n.bm-tbl{font-size:14.5px;}\n.bm-tbl,.bm-tbl tbody,.bm-tbl tr,.bm-tbl td{display:block;width:100%;}\n.bm-tbl tr:first-child{display:none;}\n.bm-tbl tr{padding:14px 0 16px;border-bottom:1px solid var(--bm-line);}\n.bm-tbl tr:last-child{border-bottom:none;}\n.bm-tbl td{border:none;padding:3px 0;white-space:normal;}\n.bm-tbl td:first-child{white-space:normal;font-size:15.5px;padding-bottom:6px;}\n.bm-tbl td:nth-child(2){white-space:normal;}\n.bm-tbl td[data-l]::before{content:attr(data-l) \": \";color:var(--bm-sub);font-size:12.5px;letter-spacing:.04em;}\n.bm-tag{margin-left:6px;}\n}\n\u003c\/style\u003e\n\n\u003cdiv class=\"bm-section\"\u003e\n\u003cdiv class=\"bm-sub\"\u003eProduct Overview\u003c\/div\u003e\n\u003cp class=\"bm-text\"\u003eThe S58 is a 3.0L inline-6 twin-turbo engine. The factory mid-pipe is designed to meet quietness and emissions regulations, and\u003cspan class=\"bm-emph\"\u003eA structure that prioritises sound suppression over exhaust flow\u003c\/span\u003eis the case.\u003c\/p\u003e\n\u003cp class=\"bm-text\"\u003eThe HYFLOW™ single mid-pipe replaces this section with a single, wide-diameter path.\u003cspan class=\"bm-emph\"\u003eWith brace (reinforcement stay)\u003c\/span\u003eThis configuration keeps the flow path open while suppressing vibration from exhaust pulsation.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"bm-section\"\u003e\n\u003cdiv class=\"bm-sub\"\u003eWhat Changes with a Downpipe\u003c\/div\u003e\n\u003cp class=\"bm-text\"\u003eExhaust flows in the order turbo → downpipe → mid-pipe → silencer. \u003cspan class=\"bm-emph\"\u003eThe downpipe sits immediately after the turbo\u003c\/span\u003e, where exhaust gas passes through at its highest temperature and pressure in this part of the system.\u003c\/p\u003e\n\u003cul class=\"bm-list\"\u003e\n\u003cli\u003e\n\u003cstrong\u003eReduced back pressure\u003c\/strong\u003e: pressure downstream of the turbine drops. Since the turbine spins on the momentum of the exhaust gas, the lighter the load on the outlet side, the faster it spools up\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBoost response\u003c\/strong\u003e: Turbo lag — the time between pressing the accelerator and boost coming on — is shortened. What you feel is less about peak output and more about\u003cspan class=\"bm-emph\"\u003eSharper mid-range acceleration\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eExhaust note\u003c\/strong\u003e: the factory downpipe also contributes to silencing, so replacing it changes both volume and character. The low end gains body, and high in the rev range you get a metallic edge that carries\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"bm-note\"\u003eWhile an exhaust swap changes the sound at the exit, a downpipe \u003cspan class=\"bm-emph\"\u003echanges the flow from the point closest to the engine\u003c\/span\u003e. Combine the two, and each moves into territory that neither reaches on its own.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"bm-section\"\u003e\n\u003cdiv class=\"bm-sub\"\u003eCombined with ECU tuning\u003c\/div\u003e\n\u003cp class=\"bm-text\"\u003eReplacing the downpipe improves exhaust flow, but\u003cspan class=\"bm-emph\"\u003eThis alone does not produce a major increase in output\u003c\/span\u003e. This is because the factory ECU controls boost pressure and ignition timing on the assumption of a factory exhaust, so changing only the hardware doesn't let the control system keep up.\u003c\/p\u003e\n\u003cp class=\"bm-text\"\u003eA downpipe shows its full potential \u003cspan class=\"bm-emph\"\u003ewhen combined with ECU tuning\u003c\/span\u003e. Improved flow lets boost pressure be raised to match, and only then does it show up as a measurable gain in output.\u003c\/p\u003e\n\u003cp class=\"bm-note\"\u003eA downpipe on its own changes both how quickly boost builds and how the car sounds. The honest way to put it: you will feel a difference, but output depends on the tune.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"bm-section\"\u003e\n\u003cdiv class=\"bm-sub\"\u003ePairing with the S58\u003c\/div\u003e\n\u003cp class=\"bm-text\"\u003eThe S58 uses two turbines, each serving three cylinders.\u003cspan class=\"bm-emph\"\u003eHaving two turbos means having two downpipes as well\u003c\/span\u003eFor this reason, changing only one side halves the effect. This product is configured as a matched left-and-right pair.\u003cbr\u003e\u003cbr\u003eAlso, an straight-six has evenly spaced firing intervals, so the exhaust pulses line up regularly. This regularity pays off once the flow path is refined, and\u003cspan class=\"bm-emph\"\u003eThe Benefit of Building a Free-Flowing Exhaust for an Straight-Six\u003c\/span\u003eis exactly this.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"bm-section\"\u003e\n\u003cdiv class=\"bm-sub\"\u003eStandard specification\u003c\/div\u003e\n\u003cul class=\"bm-list\"\u003e\n\u003cli\u003e\n\u003cstrong\u003eConfiguration\u003c\/strong\u003e: Single mid-pipe (with brace)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBase material\u003c\/strong\u003e: Titanium\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompatible Engines\u003c\/strong\u003e: S58\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstallation\u003c\/strong\u003e: A bolt-on design for the factory mounting points\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"bm-note\"\u003eMaterial grades, pipe diameters and manufacturing details will be added to this page as soon as we have confirmed them with our supplier. Only the specifications we have verified are listed here.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"bm-section\"\u003e\n\u003cdiv class=\"bm-sub\"\u003eFitment\u003c\/div\u003e\n\u003cp class=\"bm-text\"\u003e\u003cstrong class=\"bm-emph\"\u003eBMW M2 G87 (S58)\u003c\/strong\u003ePurpose-built design. Depending on the year, grade, and modification history, adjustment may be needed at installation — please contact us before purchase if you have any questions.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"bm-section\"\u003e\n\u003cdiv class=\"bm-sub\"\u003ePricing and Shipping\u003c\/div\u003e\n\u003cp class=\"bm-text\"\u003eThe listed price \u003cspan class=\"bm-emph\"\u003eincludes shipping, customs duties and customs clearance fees\u003c\/span\u003e. There are no additional costs after the product arrives.\u003c\/p\u003e\n\u003cp class=\"bm-text\"\u003eThis product includes\u003cspan class=\"bm-emph\"\u003eCarries no brand logo engraving\u003c\/span\u003e. Taking the cost of logo work out of the production cost is what feeds back into the price. Nothing that affects performance — material, welding, finishing — has been cut.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"bm-section\"\u003e\n\u003cdiv class=\"bm-sub\"\u003eAfter Your Purchase\u003c\/div\u003e\n\u003cp class=\"bm-text\"\u003eAfter your purchase, please send us your \u003cspan class=\"bm-emph\"\u003evehicle model, year and VIN\u003c\/span\u003e via our contact form. Contacting us is required so we can identify your exact model.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"bm-section\"\u003e\n\u003cdiv class=\"bm-sub\"\u003eAbout Installation\u003c\/div\u003e\n\u003cp class=\"bm-text\"\u003eRemoving and installing the downpipe requires a lift and specialised tools. As it sits in a high-heat area right after the turbo,\u003cspan class=\"bm-emph\"\u003eWe strongly recommend installation at a garage or professional shop\u003c\/span\u003ewe will do so.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"bm-section\"\u003e\n\u003cdiv class=\"bm-sub\"\u003eWarranty\u003c\/div\u003e\n\u003cp class=\"bm-text\"\u003eFrom the day of delivery\u003cspan class=\"bm-emph\"\u003eOne year\u003c\/span\u003edefects caused by the product itself (welding faults, material faults, dimensional faults) will be replaced free of charge.\u003cspan class=\"bm-emph\"\u003eShipping costs for both the return and the replacement are covered by us\u003c\/span\u003ewe will do so.\u003c\/p\u003e\n\u003cp class=\"bm-note\"\u003e- Damage caused by installation work, normal wear from driving, and issues arising from combination with other manufacturers' products are not covered by the warranty.\u003cbr\u003e- When making a claim, please send us your VIN and photos of the affected area.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"bm-section\"\u003e\n\u003cdiv class=\"bm-sub\"\u003eAbout Lead Time\u003c\/div\u003e\n\u003cp class=\"bm-text\"\u003eAs these are built to order, dispatch normally takes \u003cspan class=\"bm-emph\"\u003e2–4 weeks\u003c\/span\u003e after order confirmationThis is the required lead time. Depending on production and logistics conditions, delivery may take longer than stated. If you're in a hurry, please contact us before purchasing.\u003c\/p\u003e\n\u003cp class=\"bm-note\"\u003e- Depending on the vehicle's condition, year, and modification history, additional adjustment may be required at installation.\u003cbr\u003e- Weld discolouration and finish may vary slightly between units.\u003cbr\u003e- Exhaust parts are wear items. Please check regularly for exhaust leaks.\u003c\/p\u003e\n\u003cp class=\"bm-note\"\u003eBMW is a registered trademark of BMW AG. This is an aftermarket part and is neither manufactured by nor affiliated with BMW AG.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003c\/div\u003e","brand":"BIMMER+","offers":[{"title":"Default Title","offer_id":49484142674147,"sku":"BMP-DP-G87-002","price":257800.0,"currency_code":"JPY","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0777\/9457\/4563\/files\/hyflow-titanium-midpipe-bmw-g87-s58-img1_shopify_8537c579-5c9c-4ef1-9086-12b0b0284ce8.jpg?v=1785602559"},{"product_id":"hyflow-titanium-downpipe-midpipe-bmw-g80-g82-s58","title":"HYFLOW™ Titanium Downpipe + Single Mid-Pipe BMW M3 G80 \/ M4 G82 (S58)","description":"\u003cdiv class=\"bm-product\"\u003e\n\n\u003cstyle\u003e\n.bm-product{--bm-text:#111;--bm-sub:#4a5159;--bm-line:rgba(0,0,0,.12);max-width:980px;margin:0 auto;padding:0 22px;font-family:system-ui,-apple-system,Segoe UI,Roboto;color:var(--bm-text);line-height:1.75;font-size:15.5px;}\n.bm-section{margin:48px 0;padding-top:24px;border-top:1px solid var(--bm-line);}\n.bm-section:first-child{border-top:none;margin-top:12px;padding-top:0;}\n.bm-sub{font-size:12.5px;letter-spacing:.14em;text-transform:uppercase;color:var(--bm-sub);margin-bottom:14px;}\n.bm-text{max-width:720px;color:var(--bm-sub);}\n.bm-list{list-style:none;padding:0;margin:0;}\n.bm-list li{padding:10px 0;border-bottom:1px solid var(--bm-line);color:var(--bm-sub);}\n.bm-list li strong{color:var(--bm-text);font-weight:500;}\n.bm-num{list-style:none;padding:0;margin:0;counter-reset:item;}\n.bm-num li{padding:10px 0;border-bottom:1px solid var(--bm-line);color:var(--bm-sub);counter-increment:item;}\n.bm-num li::before{content:counter(item) \".  \";color:var(--bm-text);font-weight:500;}\n.bm-num li ul{margin-top:8px;padding-left:18px;}\n.bm-num li ul li{padding:4px 0;border:none;}\n.bm-note{color:var(--bm-sub);font-size:13.5px;}\n.bm-emph{color:var(--bm-text);font-weight:500;}\n.bm-tbl{width:100%;border-collapse:collapse;font-size:14.5px;}\n.bm-tbl th{text-align:left;padding:10px 14px 10px 0;border-bottom:1px solid var(--bm-line);color:var(--bm-sub);font-size:12.5px;letter-spacing:.08em;font-weight:400;white-space:nowrap;}\n.bm-tbl td{padding:12px 14px 12px 0;border-bottom:1px solid var(--bm-line);color:var(--bm-sub);vertical-align:top;}\n.bm-tbl td:first-child{color:var(--bm-text);font-weight:500;white-space:nowrap;}\n.bm-tbl td:nth-child(2){white-space:nowrap;}\n.bm-here{color:var(--bm-text);font-weight:500;}\n.bm-tag{display:inline-block;font-size:11.5px;letter-spacing:.06em;padding:2px 8px;border:1px solid var(--bm-line);border-radius:3px;color:var(--bm-sub);margin-left:8px;vertical-align:middle;}\n\/* bm-responsive-tbl *\/\n@media (max-width:600px){\n.bm-product{padding:0 16px;font-size:15px;}\n.bm-tbl{font-size:14.5px;}\n.bm-tbl,.bm-tbl tbody,.bm-tbl tr,.bm-tbl td{display:block;width:100%;}\n.bm-tbl tr:first-child{display:none;}\n.bm-tbl tr{padding:14px 0 16px;border-bottom:1px solid var(--bm-line);}\n.bm-tbl tr:last-child{border-bottom:none;}\n.bm-tbl td{border:none;padding:3px 0;white-space:normal;}\n.bm-tbl td:first-child{white-space:normal;font-size:15.5px;padding-bottom:6px;}\n.bm-tbl td:nth-child(2){white-space:normal;}\n.bm-tbl td[data-l]::before{content:attr(data-l) \": \";color:var(--bm-sub);font-size:12.5px;letter-spacing:.04em;}\n.bm-tag{margin-left:6px;}\n}\n\u003c\/style\u003e\n\n\u003cdiv class=\"bm-section\"\u003e\n\u003cdiv class=\"bm-sub\"\u003eProduct Overview\u003c\/div\u003e\n\u003cp class=\"bm-text\"\u003eThe S58 is a 3.0L inline-6 twin-turbo engine. The factory mid-pipe is designed to meet quietness and emissions regulations, and\u003cspan class=\"bm-emph\"\u003eA structure that prioritises sound suppression over exhaust flow\u003c\/span\u003eis the case.\u003c\/p\u003e\n\u003cp class=\"bm-text\"\u003eThe HYFLOW™ single mid-pipe replaces this section with a single, wide-diameter path.\u003cspan class=\"bm-emph\"\u003eWith brace (reinforcement stay)\u003c\/span\u003eThis configuration keeps the flow path open while suppressing vibration from exhaust pulsation.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"bm-section\"\u003e\n\u003cdiv class=\"bm-sub\"\u003eWhat Changes with a Downpipe\u003c\/div\u003e\n\u003cp class=\"bm-text\"\u003eExhaust flows in the order turbo → downpipe → mid-pipe → silencer. \u003cspan class=\"bm-emph\"\u003eThe downpipe sits immediately after the turbo\u003c\/span\u003e, where exhaust gas passes through at its highest temperature and pressure in this part of the system.\u003c\/p\u003e\n\u003cul class=\"bm-list\"\u003e\n\u003cli\u003e\n\u003cstrong\u003eReduced back pressure\u003c\/strong\u003e: pressure downstream of the turbine drops. Since the turbine spins on the momentum of the exhaust gas, the lighter the load on the outlet side, the faster it spools up\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBoost response\u003c\/strong\u003e: Turbo lag — the time between pressing the accelerator and boost coming on — is shortened. What you feel is less about peak output and more about\u003cspan class=\"bm-emph\"\u003eSharper mid-range acceleration\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eExhaust note\u003c\/strong\u003e: the factory downpipe also contributes to silencing, so replacing it changes both volume and character. The low end gains body, and high in the rev range you get a metallic edge that carries\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"bm-note\"\u003eWhile an exhaust swap changes the sound at the exit, a downpipe \u003cspan class=\"bm-emph\"\u003echanges the flow from the point closest to the engine\u003c\/span\u003e. Combine the two, and each moves into territory that neither reaches on its own.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"bm-section\"\u003e\n\u003cdiv class=\"bm-sub\"\u003eCombined with ECU tuning\u003c\/div\u003e\n\u003cp class=\"bm-text\"\u003eReplacing the downpipe improves exhaust flow, but\u003cspan class=\"bm-emph\"\u003eThis alone does not produce a major increase in output\u003c\/span\u003e. This is because the factory ECU controls boost pressure and ignition timing on the assumption of a factory exhaust, so changing only the hardware doesn't let the control system keep up.\u003c\/p\u003e\n\u003cp class=\"bm-text\"\u003eA downpipe shows its full potential \u003cspan class=\"bm-emph\"\u003ewhen combined with ECU tuning\u003c\/span\u003e. Improved flow lets boost pressure be raised to match, and only then does it show up as a measurable gain in output.\u003c\/p\u003e\n\u003cp class=\"bm-note\"\u003eA downpipe on its own changes both how quickly boost builds and how the car sounds. The honest way to put it: you will feel a difference, but output depends on the tune.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"bm-section\"\u003e\n\u003cdiv class=\"bm-sub\"\u003ePairing with the S58\u003c\/div\u003e\n\u003cp class=\"bm-text\"\u003eThe S58 uses two turbines, each serving three cylinders.\u003cspan class=\"bm-emph\"\u003eHaving two turbos means having two downpipes as well\u003c\/span\u003eFor this reason, changing only one side halves the effect. This product is configured as a matched left-and-right pair.\u003cbr\u003e\u003cbr\u003eAlso, an straight-six has evenly spaced firing intervals, so the exhaust pulses line up regularly. This regularity pays off once the flow path is refined, and\u003cspan class=\"bm-emph\"\u003eThe Benefit of Building a Free-Flowing Exhaust for an Straight-Six\u003c\/span\u003eis exactly this.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"bm-section\"\u003e\n\u003cdiv class=\"bm-sub\"\u003eStandard specification\u003c\/div\u003e\n\u003cul class=\"bm-list\"\u003e\n\u003cli\u003e\n\u003cstrong\u003eConfiguration\u003c\/strong\u003e: Downpipe + single mid-pipe\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBase material\u003c\/strong\u003e: Titanium\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompatible Engines\u003c\/strong\u003e: S58\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstallation\u003c\/strong\u003e: A bolt-on design for the factory mounting points\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"bm-note\"\u003eMaterial grades, pipe diameters and manufacturing details will be added to this page as soon as we have confirmed them with our supplier. Only the specifications we have verified are listed here.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"bm-section\"\u003e\n\u003cdiv class=\"bm-sub\"\u003eFitment\u003c\/div\u003e\n\u003cp class=\"bm-text\"\u003e\u003cstrong class=\"bm-emph\"\u003e+ Single Mid-pipe — BMW M3 G80 \/ M4 G82 (S58)\u003c\/strong\u003ePurpose-built design. Depending on the year, grade, and modification history, adjustment may be needed at installation — please contact us before purchase if you have any questions.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"bm-section\"\u003e\n\u003cdiv class=\"bm-sub\"\u003ePricing and Shipping\u003c\/div\u003e\n\u003cp class=\"bm-text\"\u003eThe listed price \u003cspan class=\"bm-emph\"\u003eincludes shipping, customs duties and customs clearance fees\u003c\/span\u003e. There are no additional costs after the product arrives.\u003c\/p\u003e\n\u003cp class=\"bm-text\"\u003eThis product includes\u003cspan class=\"bm-emph\"\u003eCarries no brand logo engraving\u003c\/span\u003e. Taking the cost of logo work out of the production cost is what feeds back into the price. Nothing that affects performance — material, welding, finishing — has been cut.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"bm-section\"\u003e\n\u003cdiv class=\"bm-sub\"\u003eAfter Your Purchase\u003c\/div\u003e\n\u003cp class=\"bm-text\"\u003eAfter your purchase, please send us your \u003cspan class=\"bm-emph\"\u003evehicle model, year and VIN\u003c\/span\u003e via our contact form. Contacting us is required so we can identify your exact model.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"bm-section\"\u003e\n\u003cdiv class=\"bm-sub\"\u003eAbout Installation\u003c\/div\u003e\n\u003cp class=\"bm-text\"\u003eRemoving and installing the downpipe requires a lift and specialised tools. As it sits in a high-heat area right after the turbo,\u003cspan class=\"bm-emph\"\u003eWe strongly recommend installation at a garage or professional shop\u003c\/span\u003ewe will do so.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"bm-section\"\u003e\n\u003cdiv class=\"bm-sub\"\u003eWarranty\u003c\/div\u003e\n\u003cp class=\"bm-text\"\u003eFrom the day of delivery\u003cspan class=\"bm-emph\"\u003eOne year\u003c\/span\u003edefects caused by the product itself (welding faults, material faults, dimensional faults) will be replaced free of charge.\u003cspan class=\"bm-emph\"\u003eShipping costs for both the return and the replacement are covered by us\u003c\/span\u003ewe will do so.\u003c\/p\u003e\n\u003cp class=\"bm-note\"\u003e- Damage caused by installation work, normal wear from driving, and issues arising from combination with other manufacturers' products are not covered by the warranty.\u003cbr\u003e- When making a claim, please send us your VIN and photos of the affected area.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"bm-section\"\u003e\n\u003cdiv class=\"bm-sub\"\u003eAbout Lead Time\u003c\/div\u003e\n\u003cp class=\"bm-text\"\u003eAs these are built to order, dispatch normally takes \u003cspan class=\"bm-emph\"\u003e2–4 weeks\u003c\/span\u003e after order confirmationThis is the required lead time. Depending on production and logistics conditions, delivery may take longer than stated. If you're in a hurry, please contact us before purchasing.\u003c\/p\u003e\n\u003cp class=\"bm-note\"\u003e- Depending on the vehicle's condition, year, and modification history, additional adjustment may be required at installation.\u003cbr\u003e- Weld discolouration and finish may vary slightly between units.\u003cbr\u003e- Exhaust parts are wear items. Please check regularly for exhaust leaks.\u003c\/p\u003e\n\u003cp class=\"bm-note\"\u003eBMW is a registered trademark of BMW AG. This is an aftermarket part and is neither manufactured by nor affiliated with BMW AG.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003c\/div\u003e","brand":"BIMMER+","offers":[{"title":"Default Title","offer_id":49484142739683,"sku":"BMP-DP-G80-001","price":257800.0,"currency_code":"JPY","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0777\/9457\/4563\/files\/hyflow-titanium-downpipe-midpipe-bmw-g80-g82-s58-img1_shopify_448c1bc9-1e38-40db-bd33-9366214f0b89.jpg?v=1785602565"},{"product_id":"hyflow-titanium-catless-downpipe-bmw-g80-g82-s58","title":"HYFLOW™ Titanium Catless Downpipe BMW M3 G80 \/ M4 G82 (S58)","description":"\u003cdiv class=\"bm-product\"\u003e\n\n\u003cstyle\u003e\n.bm-product{--bm-text:#111;--bm-sub:#4a5159;--bm-line:rgba(0,0,0,.12);max-width:980px;margin:0 auto;padding:0 22px;font-family:system-ui,-apple-system,Segoe UI,Roboto;color:var(--bm-text);line-height:1.75;font-size:15.5px;}\n.bm-section{margin:48px 0;padding-top:24px;border-top:1px solid var(--bm-line);}\n.bm-section:first-child{border-top:none;margin-top:12px;padding-top:0;}\n.bm-sub{font-size:12.5px;letter-spacing:.14em;text-transform:uppercase;color:var(--bm-sub);margin-bottom:14px;}\n.bm-text{max-width:720px;color:var(--bm-sub);}\n.bm-list{list-style:none;padding:0;margin:0;}\n.bm-list li{padding:10px 0;border-bottom:1px solid var(--bm-line);color:var(--bm-sub);}\n.bm-list li strong{color:var(--bm-text);font-weight:500;}\n.bm-num{list-style:none;padding:0;margin:0;counter-reset:item;}\n.bm-num li{padding:10px 0;border-bottom:1px solid var(--bm-line);color:var(--bm-sub);counter-increment:item;}\n.bm-num li::before{content:counter(item) \".  \";color:var(--bm-text);font-weight:500;}\n.bm-num li ul{margin-top:8px;padding-left:18px;}\n.bm-num li ul li{padding:4px 0;border:none;}\n.bm-note{color:var(--bm-sub);font-size:13.5px;}\n.bm-emph{color:var(--bm-text);font-weight:500;}\n.bm-tbl{width:100%;border-collapse:collapse;font-size:14.5px;}\n.bm-tbl th{text-align:left;padding:10px 14px 10px 0;border-bottom:1px solid var(--bm-line);color:var(--bm-sub);font-size:12.5px;letter-spacing:.08em;font-weight:400;white-space:nowrap;}\n.bm-tbl td{padding:12px 14px 12px 0;border-bottom:1px solid var(--bm-line);color:var(--bm-sub);vertical-align:top;}\n.bm-tbl td:first-child{color:var(--bm-text);font-weight:500;white-space:nowrap;}\n.bm-tbl td:nth-child(2){white-space:nowrap;}\n.bm-here{color:var(--bm-text);font-weight:500;}\n.bm-tag{display:inline-block;font-size:11.5px;letter-spacing:.06em;padding:2px 8px;border:1px solid var(--bm-line);border-radius:3px;color:var(--bm-sub);margin-left:8px;vertical-align:middle;}\n\/* bm-responsive-tbl *\/\n@media (max-width:600px){\n.bm-product{padding:0 16px;font-size:15px;}\n.bm-tbl{font-size:14.5px;}\n.bm-tbl,.bm-tbl tbody,.bm-tbl tr,.bm-tbl td{display:block;width:100%;}\n.bm-tbl tr:first-child{display:none;}\n.bm-tbl tr{padding:14px 0 16px;border-bottom:1px solid var(--bm-line);}\n.bm-tbl tr:last-child{border-bottom:none;}\n.bm-tbl td{border:none;padding:3px 0;white-space:normal;}\n.bm-tbl td:first-child{white-space:normal;font-size:15.5px;padding-bottom:6px;}\n.bm-tbl td:nth-child(2){white-space:normal;}\n.bm-tbl td[data-l]::before{content:attr(data-l) \": \";color:var(--bm-sub);font-size:12.5px;letter-spacing:.04em;}\n.bm-tag{margin-left:6px;}\n}\n\u003c\/style\u003e\n\n\u003cdiv class=\"bm-section\"\u003e\n\u003cdiv class=\"bm-sub\"\u003eProduct Overview\u003c\/div\u003e\n\u003cp class=\"bm-text\"\u003eThe S58 is a 3.0L inline-6 twin-turbo engine. The factory downpipe has a catalytic converter built in, and while it cleans the exhaust gas,\u003cspan class=\"bm-emph\"\u003ethe part that narrows the exhaust path the most\u003c\/span\u003eThis is also true here. Positioned right after the turbo, resistance at this point directly affects how boost builds.\u003c\/p\u003e\n\u003cp class=\"bm-text\"\u003eThe HYFLOW™ catless downpipe removes the catalytic converter from this section, and\u003cspan class=\"bm-emph\"\u003eA path that runs straight downstream from the turbine outlet\u003c\/span\u003e. This creates that gap — as back-pressure drops, the turbo begins spinning up more readily, shortening the time between pressing the throttle and boost arriving.\u003c\/p\u003e\n\u003cp class=\"bm-note\"\u003eThis product has \u003cspan class=\"bm-emph\"\u003eno catalytic converter\u003c\/span\u003e. Please refer to \"About Regulations\" for the conditions of use.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"bm-section\"\u003e\n\u003cdiv class=\"bm-sub\"\u003eWhat Changes with a Downpipe\u003c\/div\u003e\n\u003cp class=\"bm-text\"\u003eExhaust flows in the order turbo → downpipe → mid-pipe → silencer. \u003cspan class=\"bm-emph\"\u003eThe downpipe sits immediately after the turbo\u003c\/span\u003e, where exhaust gas passes through at its highest temperature and pressure in this part of the system.\u003c\/p\u003e\n\u003cul class=\"bm-list\"\u003e\n\u003cli\u003e\n\u003cstrong\u003eReduced back pressure\u003c\/strong\u003e: pressure downstream of the turbine drops. Since the turbine spins on the momentum of the exhaust gas, the lighter the load on the outlet side, the faster it spools up\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBoost response\u003c\/strong\u003e: Turbo lag — the time between pressing the accelerator and boost coming on — is shortened. What you feel is less about peak output and more about\u003cspan class=\"bm-emph\"\u003eSharper mid-range acceleration\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eExhaust note\u003c\/strong\u003e: the factory downpipe also contributes to silencing, so replacing it changes both volume and character. The low end gains body, and high in the rev range you get a metallic edge that carries\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"bm-note\"\u003eWhile an exhaust swap changes the sound at the exit, a downpipe \u003cspan class=\"bm-emph\"\u003echanges the flow from the point closest to the engine\u003c\/span\u003e. Combine the two, and each moves into territory that neither reaches on its own.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"bm-section\"\u003e\n\u003cdiv class=\"bm-sub\"\u003eCombined with ECU tuning\u003c\/div\u003e\n\u003cp class=\"bm-text\"\u003eReplacing the downpipe improves exhaust flow, but\u003cspan class=\"bm-emph\"\u003eThis alone does not produce a major increase in output\u003c\/span\u003e. This is because the factory ECU controls boost pressure and ignition timing on the assumption of a factory exhaust, so changing only the hardware doesn't let the control system keep up.\u003c\/p\u003e\n\u003cp class=\"bm-text\"\u003eA downpipe shows its full potential \u003cspan class=\"bm-emph\"\u003ewhen combined with ECU tuning\u003c\/span\u003e. Improved flow lets boost pressure be raised to match, and only then does it show up as a measurable gain in output.\u003c\/p\u003e\n\u003cp class=\"bm-note\"\u003eA downpipe on its own changes both how quickly boost builds and how the car sounds. The honest way to put it: you will feel a difference, but output depends on the tune.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"bm-section\"\u003e\n\u003cdiv class=\"bm-sub\"\u003eAbout Regulations\u003c\/div\u003e\n\u003cp class=\"bm-text\"\u003eThis product \u003cspan class=\"bm-emph\"\u003ehas no catalytic converter and does not comply with Japan's vehicle safety regulations\u003c\/span\u003e. It does not meet the emissions standards required for road use in Japan and will not pass Japan's shaken inspection.\u003c\/p\u003e\n\u003cp class=\"bm-text\"\u003e\u003cspan class=\"bm-emph\"\u003eA product limited to circuit driving and competition use\u003c\/span\u003eis offered as such. Please refrain from using it on public roads. Confirm the intended use before deciding.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"bm-section\"\u003e\n\u003cdiv class=\"bm-sub\"\u003ePairing with the S58\u003c\/div\u003e\n\u003cp class=\"bm-text\"\u003eThe S58 uses two turbines, each serving three cylinders.\u003cspan class=\"bm-emph\"\u003eHaving two turbos means having two downpipes as well\u003c\/span\u003eFor this reason, changing only one side halves the effect. This product is configured as a matched left-and-right pair.\u003cbr\u003e\u003cbr\u003eAlso, an straight-six has evenly spaced firing intervals, so the exhaust pulses line up regularly. This regularity pays off once the flow path is refined, and\u003cspan class=\"bm-emph\"\u003eThe Benefit of Building a Free-Flowing Exhaust for an Straight-Six\u003c\/span\u003eis exactly this.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"bm-section\"\u003e\n\u003cdiv class=\"bm-sub\"\u003eStandard specification\u003c\/div\u003e\n\u003cul class=\"bm-list\"\u003e\n\u003cli\u003e\n\u003cstrong\u003eConfiguration\u003c\/strong\u003e: Catless downpipe\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBase material\u003c\/strong\u003e: Titanium\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompatible Engines\u003c\/strong\u003e: S58\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstallation\u003c\/strong\u003e: A bolt-on design for the factory mounting points\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"bm-note\"\u003eMaterial grades, pipe diameters and manufacturing details will be added to this page as soon as we have confirmed them with our supplier. Only the specifications we have verified are listed here.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"bm-section\"\u003e\n\u003cdiv class=\"bm-sub\"\u003eFitment\u003c\/div\u003e\n\u003cp class=\"bm-text\"\u003e\u003cstrong class=\"bm-emph\"\u003eBMW M3 G80 \/ M4 G82 (S58)\u003c\/strong\u003ePurpose-built design. Depending on the year, grade, and modification history, adjustment may be needed at installation — please contact us before purchase if you have any questions.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"bm-section\"\u003e\n\u003cdiv class=\"bm-sub\"\u003ePricing and Shipping\u003c\/div\u003e\n\u003cp class=\"bm-text\"\u003eThe listed price \u003cspan class=\"bm-emph\"\u003eincludes shipping, customs duties and customs clearance fees\u003c\/span\u003e. There are no additional costs after the product arrives.\u003c\/p\u003e\n\u003cp class=\"bm-text\"\u003eThis product includes\u003cspan class=\"bm-emph\"\u003eCarries no brand logo engraving\u003c\/span\u003e. Taking the cost of logo work out of the production cost is what feeds back into the price. Nothing that affects performance — material, welding, finishing — has been cut.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"bm-section\"\u003e\n\u003cdiv class=\"bm-sub\"\u003eAfter Your Purchase\u003c\/div\u003e\n\u003cp class=\"bm-text\"\u003eAfter your purchase, please send us your \u003cspan class=\"bm-emph\"\u003evehicle model, year and VIN\u003c\/span\u003e via our contact form. Contacting us is required so we can identify your exact model.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"bm-section\"\u003e\n\u003cdiv class=\"bm-sub\"\u003eAbout Installation\u003c\/div\u003e\n\u003cp class=\"bm-text\"\u003eRemoving and installing the downpipe requires a lift and specialised tools. As it sits in a high-heat area right after the turbo,\u003cspan class=\"bm-emph\"\u003eWe strongly recommend installation at a garage or professional shop\u003c\/span\u003ewe will do so.\u003c\/p\u003e\n\u003cp class=\"bm-text\"\u003eRemoving the catalytic converter causes \u003cspan class=\"bm-emph\"\u003ethe O2 sensor to detect an abnormality and trigger a warning light\u003c\/span\u003e. An O2 sensor adapter or a change of control strategy through ECU tuning will be required. Discuss this with your fitting workshop in advance.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"bm-section\"\u003e\n\u003cdiv class=\"bm-sub\"\u003eWarranty\u003c\/div\u003e\n\u003cp class=\"bm-text\"\u003eFrom the day of delivery\u003cspan class=\"bm-emph\"\u003eOne year\u003c\/span\u003edefects caused by the product itself (welding faults, material faults, dimensional faults) will be replaced free of charge.\u003cspan class=\"bm-emph\"\u003eShipping costs for both the return and the replacement are covered by us\u003c\/span\u003ewe will do so.\u003c\/p\u003e\n\u003cp class=\"bm-note\"\u003e- Damage caused by installation work, normal wear from driving, and issues arising from combination with other manufacturers' products are not covered by the warranty.\u003cbr\u003e- When making a claim, please send us your VIN and photos of the affected area.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"bm-section\"\u003e\n\u003cdiv class=\"bm-sub\"\u003eAbout Lead Time\u003c\/div\u003e\n\u003cp class=\"bm-text\"\u003eAs these are built to order, dispatch normally takes \u003cspan class=\"bm-emph\"\u003e2–4 weeks\u003c\/span\u003e after order confirmationThis is the required lead time. Depending on production and logistics conditions, delivery may take longer than stated. If you're in a hurry, please contact us before purchasing.\u003c\/p\u003e\n\u003cp class=\"bm-note\"\u003e- This product is intended for off-road\/motorsport use. It cannot be used on public roads.\u003cbr\u003e- Depending on the vehicle's condition, year, and modification history, additional adjustment may be required at installation.\u003cbr\u003e- Weld discolouration and finish may vary slightly between units.\u003cbr\u003e- Exhaust parts are wear items. Please check regularly for exhaust leaks.\u003c\/p\u003e\n\u003cp class=\"bm-note\"\u003eBMW is a registered trademark of BMW AG. This is an aftermarket part and is neither manufactured by nor affiliated with BMW AG.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003c\/div\u003e","brand":"BIMMER+","offers":[{"title":"Default Title","offer_id":49484142805219,"sku":"BMP-DP-G80-002","price":105800.0,"currency_code":"JPY","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0777\/9457\/4563\/files\/hyflow-titanium-catless-downpipe-bmw-g80-g82-s58-img1_shopify_0fd1e32d-c878-47f7-9aeb-acdb9ebdefc4.jpg?v=1785602571"},{"product_id":"hyflow-catless-downpipe-bmw-e46-m57","title":"HYFLOW™ Catless Downpipe BMW 3 Series E46 (330d) (M57)","description":"\u003cdiv class=\"bm-product\"\u003e\n\n\u003cstyle\u003e\n.bm-product{--bm-text:#111;--bm-sub:#4a5159;--bm-line:rgba(0,0,0,.12);max-width:980px;margin:0 auto;padding:0 22px;font-family:system-ui,-apple-system,Segoe UI,Roboto;color:var(--bm-text);line-height:1.75;font-size:15.5px;}\n.bm-section{margin:48px 0;padding-top:24px;border-top:1px solid var(--bm-line);}\n.bm-section:first-child{border-top:none;margin-top:12px;padding-top:0;}\n.bm-sub{font-size:12.5px;letter-spacing:.14em;text-transform:uppercase;color:var(--bm-sub);margin-bottom:14px;}\n.bm-text{max-width:720px;color:var(--bm-sub);}\n.bm-list{list-style:none;padding:0;margin:0;}\n.bm-list li{padding:10px 0;border-bottom:1px solid var(--bm-line);color:var(--bm-sub);}\n.bm-list li strong{color:var(--bm-text);font-weight:500;}\n.bm-num{list-style:none;padding:0;margin:0;counter-reset:item;}\n.bm-num li{padding:10px 0;border-bottom:1px solid var(--bm-line);color:var(--bm-sub);counter-increment:item;}\n.bm-num li::before{content:counter(item) \".  \";color:var(--bm-text);font-weight:500;}\n.bm-num li ul{margin-top:8px;padding-left:18px;}\n.bm-num li ul li{padding:4px 0;border:none;}\n.bm-note{color:var(--bm-sub);font-size:13.5px;}\n.bm-emph{color:var(--bm-text);font-weight:500;}\n.bm-tbl{width:100%;border-collapse:collapse;font-size:14.5px;}\n.bm-tbl th{text-align:left;padding:10px 14px 10px 0;border-bottom:1px solid var(--bm-line);color:var(--bm-sub);font-size:12.5px;letter-spacing:.08em;font-weight:400;white-space:nowrap;}\n.bm-tbl td{padding:12px 14px 12px 0;border-bottom:1px solid var(--bm-line);color:var(--bm-sub);vertical-align:top;}\n.bm-tbl td:first-child{color:var(--bm-text);font-weight:500;white-space:nowrap;}\n.bm-tbl td:nth-child(2){white-space:nowrap;}\n.bm-here{color:var(--bm-text);font-weight:500;}\n.bm-tag{display:inline-block;font-size:11.5px;letter-spacing:.06em;padding:2px 8px;border:1px solid var(--bm-line);border-radius:3px;color:var(--bm-sub);margin-left:8px;vertical-align:middle;}\n\/* bm-responsive-tbl *\/\n@media (max-width:600px){\n.bm-product{padding:0 16px;font-size:15px;}\n.bm-tbl{font-size:14.5px;}\n.bm-tbl,.bm-tbl tbody,.bm-tbl tr,.bm-tbl td{display:block;width:100%;}\n.bm-tbl tr:first-child{display:none;}\n.bm-tbl tr{padding:14px 0 16px;border-bottom:1px solid var(--bm-line);}\n.bm-tbl tr:last-child{border-bottom:none;}\n.bm-tbl td{border:none;padding:3px 0;white-space:normal;}\n.bm-tbl td:first-child{white-space:normal;font-size:15.5px;padding-bottom:6px;}\n.bm-tbl td:nth-child(2){white-space:normal;}\n.bm-tbl td[data-l]::before{content:attr(data-l) \": \";color:var(--bm-sub);font-size:12.5px;letter-spacing:.04em;}\n.bm-tag{margin-left:6px;}\n}\n\u003c\/style\u003e\n\n\u003cdiv class=\"bm-section\"\u003e\n\u003cdiv class=\"bm-sub\"\u003eProduct Overview\u003c\/div\u003e\n\u003cp class=\"bm-text\"\u003eThe M57 is a 3.0L straight-six diesel turbo. The factory downpipe has a catalytic converter built in, which purifies emissions, but at the same time\u003cspan class=\"bm-emph\"\u003ethe part that narrows the exhaust path the most\u003c\/span\u003eThis is also true here. Positioned right after the turbo, resistance at this point directly affects how boost builds.\u003c\/p\u003e\n\u003cp class=\"bm-text\"\u003eThe HYFLOW™ catless downpipe removes the catalytic converter from this section, and\u003cspan class=\"bm-emph\"\u003eA path that runs straight downstream from the turbine outlet\u003c\/span\u003e. This creates that gap — as back-pressure drops, the turbo begins spinning up more readily, shortening the time between pressing the throttle and boost arriving.\u003c\/p\u003e\n\u003cp class=\"bm-note\"\u003eThis product has \u003cspan class=\"bm-emph\"\u003eno catalytic converter\u003c\/span\u003e. Please refer to \"About Regulations\" for the conditions of use.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"bm-section\"\u003e\n\u003cdiv class=\"bm-sub\"\u003eWhat Changes with a Downpipe\u003c\/div\u003e\n\u003cp class=\"bm-text\"\u003eExhaust flows in the order turbo → downpipe → mid-pipe → silencer. \u003cspan class=\"bm-emph\"\u003eThe downpipe sits immediately after the turbo\u003c\/span\u003e, where exhaust gas passes through at its highest temperature and pressure in this part of the system.\u003c\/p\u003e\n\u003cul class=\"bm-list\"\u003e\n\u003cli\u003e\n\u003cstrong\u003eReduced back pressure\u003c\/strong\u003e: pressure downstream of the turbine drops. Since the turbine spins on the momentum of the exhaust gas, the lighter the load on the outlet side, the faster it spools up\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBoost response\u003c\/strong\u003e: Turbo lag — the time between pressing the accelerator and boost coming on — is shortened. What you feel is less about peak output and more about\u003cspan class=\"bm-emph\"\u003eSharper mid-range acceleration\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eExhaust note\u003c\/strong\u003e: the factory downpipe also contributes to silencing, so replacing it changes both volume and character. The low end gains body, and high in the rev range you get a metallic edge that carries\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"bm-note\"\u003eWhile an exhaust swap changes the sound at the exit, a downpipe \u003cspan class=\"bm-emph\"\u003echanges the flow from the point closest to the engine\u003c\/span\u003e. Combine the two, and each moves into territory that neither reaches on its own.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"bm-section\"\u003e\n\u003cdiv class=\"bm-sub\"\u003eCombined with ECU tuning\u003c\/div\u003e\n\u003cp class=\"bm-text\"\u003eReplacing the downpipe improves exhaust flow, but\u003cspan class=\"bm-emph\"\u003eThis alone does not produce a major increase in output\u003c\/span\u003e. This is because the factory ECU controls boost pressure and ignition timing on the assumption of a factory exhaust, so changing only the hardware doesn't let the control system keep up.\u003c\/p\u003e\n\u003cp class=\"bm-text\"\u003eA downpipe shows its full potential \u003cspan class=\"bm-emph\"\u003ewhen combined with ECU tuning\u003c\/span\u003e. Improved flow lets boost pressure be raised to match, and only then does it show up as a measurable gain in output.\u003c\/p\u003e\n\u003cp class=\"bm-note\"\u003eA downpipe on its own changes both how quickly boost builds and how the car sounds. The honest way to put it: you will feel a difference, but output depends on the tune.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"bm-section\"\u003e\n\u003cdiv class=\"bm-sub\"\u003eAbout Regulations\u003c\/div\u003e\n\u003cp class=\"bm-text\"\u003eThis product \u003cspan class=\"bm-emph\"\u003ehas no catalytic converter and does not comply with Japan's vehicle safety regulations\u003c\/span\u003e. It does not meet the emissions standards required for road use in Japan and will not pass Japan's shaken inspection.\u003c\/p\u003e\n\u003cp class=\"bm-text\"\u003e\u003cspan class=\"bm-emph\"\u003eA product limited to circuit driving and competition use\u003c\/span\u003eis offered as such. Please refrain from using it on public roads. Confirm the intended use before deciding.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"bm-section\"\u003e\n\u003cdiv class=\"bm-sub\"\u003eCombination with the M57\u003c\/div\u003e\n\u003cp class=\"bm-text\"\u003eThe M57 is a turbo-diesel.\u003cspan class=\"bm-emph\"\u003eDiesels produce high torque from low rpm, but in exchange have a larger exhaust volume, and\u003c\/span\u003e, the effect of reducing resistance in the exhaust path shows up in how torque is delivered.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"bm-section\"\u003e\n\u003cdiv class=\"bm-sub\"\u003eStandard specification\u003c\/div\u003e\n\u003cul class=\"bm-list\"\u003e\n\u003cli\u003e\n\u003cstrong\u003eConfiguration\u003c\/strong\u003e: Catless downpipe\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompatible Engines\u003c\/strong\u003e: M57\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstallation\u003c\/strong\u003e: A bolt-on design for the factory mounting points\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"bm-note\"\u003eMaterial grades, pipe diameters and manufacturing details will be added to this page as soon as we have confirmed them with our supplier. Only the specifications we have verified are listed here.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"bm-section\"\u003e\n\u003cdiv class=\"bm-sub\"\u003eFitment\u003c\/div\u003e\n\u003cp class=\"bm-text\"\u003e\u003cstrong class=\"bm-emph\"\u003eBMW 3 Series E46 (330d) (M57)\u003c\/strong\u003ePurpose-built design. Depending on the year, grade, and modification history, adjustment may be needed at installation — please contact us before purchase if you have any questions.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"bm-section\"\u003e\n\u003cdiv class=\"bm-sub\"\u003ePricing and Shipping\u003c\/div\u003e\n\u003cp class=\"bm-text\"\u003eThe listed price \u003cspan class=\"bm-emph\"\u003eincludes shipping, customs duties and customs clearance fees\u003c\/span\u003e. There are no additional costs after the product arrives.\u003c\/p\u003e\n\u003cp class=\"bm-text\"\u003eThis product includes\u003cspan class=\"bm-emph\"\u003eCarries no brand logo engraving\u003c\/span\u003e. Taking the cost of logo work out of the production cost is what feeds back into the price. Nothing that affects performance — material, welding, finishing — has been cut.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"bm-section\"\u003e\n\u003cdiv class=\"bm-sub\"\u003eAfter Your Purchase\u003c\/div\u003e\n\u003cp class=\"bm-text\"\u003eAfter your purchase, please send us your \u003cspan class=\"bm-emph\"\u003evehicle model, year and VIN\u003c\/span\u003e via our contact form. Contacting us is required so we can identify your exact model.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"bm-section\"\u003e\n\u003cdiv class=\"bm-sub\"\u003eAbout Installation\u003c\/div\u003e\n\u003cp class=\"bm-text\"\u003eRemoving and installing the downpipe requires a lift and specialised tools. As it sits in a high-heat area right after the turbo,\u003cspan class=\"bm-emph\"\u003eWe strongly recommend installation at a garage or professional shop\u003c\/span\u003ewe will do so.\u003c\/p\u003e\n\u003cp class=\"bm-text\"\u003eRemoving the catalytic converter causes \u003cspan class=\"bm-emph\"\u003ethe O2 sensor to detect an abnormality and trigger a warning light\u003c\/span\u003e. An O2 sensor adapter or a change of control strategy through ECU tuning will be required. Discuss this with your fitting workshop in advance.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"bm-section\"\u003e\n\u003cdiv class=\"bm-sub\"\u003eWarranty\u003c\/div\u003e\n\u003cp class=\"bm-text\"\u003eFrom the day of delivery\u003cspan class=\"bm-emph\"\u003eOne year\u003c\/span\u003edefects caused by the product itself (welding faults, material faults, dimensional faults) will be replaced free of charge.\u003cspan class=\"bm-emph\"\u003eShipping costs for both the return and the replacement are covered by us\u003c\/span\u003ewe will do so.\u003c\/p\u003e\n\u003cp class=\"bm-note\"\u003e- Damage caused by installation work, normal wear from driving, and issues arising from combination with other manufacturers' products are not covered by the warranty.\u003cbr\u003e- When making a claim, please send us your VIN and photos of the affected area.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"bm-section\"\u003e\n\u003cdiv class=\"bm-sub\"\u003eAbout Lead Time\u003c\/div\u003e\n\u003cp class=\"bm-text\"\u003eAs these are built to order, dispatch normally takes \u003cspan class=\"bm-emph\"\u003e2–4 weeks\u003c\/span\u003e after order confirmationThis is the required lead time. Depending on production and logistics conditions, delivery may take longer than stated. If you're in a hurry, please contact us before purchasing.\u003c\/p\u003e\n\u003cp class=\"bm-note\"\u003e- This product is intended for off-road\/motorsport use. It cannot be used on public roads.\u003cbr\u003e- Depending on the vehicle's condition, year, and modification history, additional adjustment may be required at installation.\u003cbr\u003e- Weld discolouration and finish may vary slightly between units.\u003cbr\u003e- Exhaust parts are wear items. Please check regularly for exhaust leaks.\u003c\/p\u003e\n\u003cp class=\"bm-note\"\u003eBMW is a registered trademark of BMW AG. This is an aftermarket part and is neither manufactured by nor affiliated with BMW AG.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003c\/div\u003e","brand":"BIMMER+","offers":[{"title":"Default Title","offer_id":49484142837987,"sku":"BMP-DP-E46-001","price":53800.0,"currency_code":"JPY","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0777\/9457\/4563\/files\/hyflow-catless-downpipe-bmw-e46-m57-img1_shopify_62ccd7a8-4904-442e-a5a1-7e1b13269eca.jpg?v=1785602576"},{"product_id":"hyflow-catless-downpipe-bmw-f20-f21-f87-f22-n55","title":"HYFLOW™ Catless Downpipe BMW M135i \/ M2 \/ M235i \/ 335i \/ 435i (F-Chassis) (N55)","description":"\u003cdiv class=\"bm-product\"\u003e\n\n\u003cstyle\u003e\n.bm-product{--bm-text:#111;--bm-sub:#4a5159;--bm-line:rgba(0,0,0,.12);max-width:980px;margin:0 auto;padding:0 22px;font-family:system-ui,-apple-system,Segoe UI,Roboto;color:var(--bm-text);line-height:1.75;font-size:15.5px;}\n.bm-section{margin:48px 0;padding-top:24px;border-top:1px solid var(--bm-line);}\n.bm-section:first-child{border-top:none;margin-top:12px;padding-top:0;}\n.bm-sub{font-size:12.5px;letter-spacing:.14em;text-transform:uppercase;color:var(--bm-sub);margin-bottom:14px;}\n.bm-text{max-width:720px;color:var(--bm-sub);}\n.bm-list{list-style:none;padding:0;margin:0;}\n.bm-list li{padding:10px 0;border-bottom:1px solid var(--bm-line);color:var(--bm-sub);}\n.bm-list li strong{color:var(--bm-text);font-weight:500;}\n.bm-num{list-style:none;padding:0;margin:0;counter-reset:item;}\n.bm-num li{padding:10px 0;border-bottom:1px solid var(--bm-line);color:var(--bm-sub);counter-increment:item;}\n.bm-num li::before{content:counter(item) \".  \";color:var(--bm-text);font-weight:500;}\n.bm-num li ul{margin-top:8px;padding-left:18px;}\n.bm-num li ul li{padding:4px 0;border:none;}\n.bm-note{color:var(--bm-sub);font-size:13.5px;}\n.bm-emph{color:var(--bm-text);font-weight:500;}\n.bm-tbl{width:100%;border-collapse:collapse;font-size:14.5px;}\n.bm-tbl th{text-align:left;padding:10px 14px 10px 0;border-bottom:1px solid var(--bm-line);color:var(--bm-sub);font-size:12.5px;letter-spacing:.08em;font-weight:400;white-space:nowrap;}\n.bm-tbl td{padding:12px 14px 12px 0;border-bottom:1px solid var(--bm-line);color:var(--bm-sub);vertical-align:top;}\n.bm-tbl td:first-child{color:var(--bm-text);font-weight:500;white-space:nowrap;}\n.bm-tbl td:nth-child(2){white-space:nowrap;}\n.bm-here{color:var(--bm-text);font-weight:500;}\n.bm-tag{display:inline-block;font-size:11.5px;letter-spacing:.06em;padding:2px 8px;border:1px solid var(--bm-line);border-radius:3px;color:var(--bm-sub);margin-left:8px;vertical-align:middle;}\n\/* bm-responsive-tbl *\/\n@media (max-width:600px){\n.bm-product{padding:0 16px;font-size:15px;}\n.bm-tbl{font-size:14.5px;}\n.bm-tbl,.bm-tbl tbody,.bm-tbl tr,.bm-tbl td{display:block;width:100%;}\n.bm-tbl tr:first-child{display:none;}\n.bm-tbl tr{padding:14px 0 16px;border-bottom:1px solid var(--bm-line);}\n.bm-tbl tr:last-child{border-bottom:none;}\n.bm-tbl td{border:none;padding:3px 0;white-space:normal;}\n.bm-tbl td:first-child{white-space:normal;font-size:15.5px;padding-bottom:6px;}\n.bm-tbl td:nth-child(2){white-space:normal;}\n.bm-tbl td[data-l]::before{content:attr(data-l) \": \";color:var(--bm-sub);font-size:12.5px;letter-spacing:.04em;}\n.bm-tag{margin-left:6px;}\n}\n\u003c\/style\u003e\n\n\u003cdiv class=\"bm-section\"\u003e\n\u003cdiv class=\"bm-sub\"\u003eProduct Overview\u003c\/div\u003e\n\u003cp class=\"bm-text\"\u003eThe N55 is a 3.0-litre single-turbo straight-six. The factory downpipe has a catalytic converter built in, and while it cleans the exhaust gases,\u003cspan class=\"bm-emph\"\u003ethe part that narrows the exhaust path the most\u003c\/span\u003eThis is also true here. Positioned right after the turbo, resistance at this point directly affects how boost builds.\u003c\/p\u003e\n\u003cp class=\"bm-text\"\u003eThe HYFLOW™ catless downpipe removes the catalytic converter from this section, and\u003cspan class=\"bm-emph\"\u003eA path that runs straight downstream from the turbine outlet\u003c\/span\u003e. This creates that gap — as back-pressure drops, the turbo begins spinning up more readily, shortening the time between pressing the throttle and boost arriving.\u003c\/p\u003e\n\u003cp class=\"bm-note\"\u003eThis product has \u003cspan class=\"bm-emph\"\u003eno catalytic converter\u003c\/span\u003e. Please refer to \"About Regulations\" for the conditions of use.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"bm-section\"\u003e\n\u003cdiv class=\"bm-sub\"\u003eWhat Changes with a Downpipe\u003c\/div\u003e\n\u003cp class=\"bm-text\"\u003eExhaust flows in the order turbo → downpipe → mid-pipe → silencer. \u003cspan class=\"bm-emph\"\u003eThe downpipe sits immediately after the turbo\u003c\/span\u003e, where exhaust gas passes through at its highest temperature and pressure in this part of the system.\u003c\/p\u003e\n\u003cul class=\"bm-list\"\u003e\n\u003cli\u003e\n\u003cstrong\u003eReduced back pressure\u003c\/strong\u003e: pressure downstream of the turbine drops. Since the turbine spins on the momentum of the exhaust gas, the lighter the load on the outlet side, the faster it spools up\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBoost response\u003c\/strong\u003e: Turbo lag — the time between pressing the accelerator and boost coming on — is shortened. What you feel is less about peak output and more about\u003cspan class=\"bm-emph\"\u003eSharper mid-range acceleration\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eExhaust note\u003c\/strong\u003e: the factory downpipe also contributes to silencing, so replacing it changes both volume and character. The low end gains body, and high in the rev range you get a metallic edge that carries\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"bm-note\"\u003eWhile an exhaust swap changes the sound at the exit, a downpipe \u003cspan class=\"bm-emph\"\u003echanges the flow from the point closest to the engine\u003c\/span\u003e. Combine the two, and each moves into territory that neither reaches on its own.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"bm-section\"\u003e\n\u003cdiv class=\"bm-sub\"\u003eCombined with ECU tuning\u003c\/div\u003e\n\u003cp class=\"bm-text\"\u003eReplacing the downpipe improves exhaust flow, but\u003cspan class=\"bm-emph\"\u003eThis alone does not produce a major increase in output\u003c\/span\u003e. This is because the factory ECU controls boost pressure and ignition timing on the assumption of a factory exhaust, so changing only the hardware doesn't let the control system keep up.\u003c\/p\u003e\n\u003cp class=\"bm-text\"\u003eA downpipe shows its full potential \u003cspan class=\"bm-emph\"\u003ewhen combined with ECU tuning\u003c\/span\u003e. Improved flow lets boost pressure be raised to match, and only then does it show up as a measurable gain in output.\u003c\/p\u003e\n\u003cp class=\"bm-note\"\u003eA downpipe on its own changes both how quickly boost builds and how the car sounds. The honest way to put it: you will feel a difference, but output depends on the tune.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"bm-section\"\u003e\n\u003cdiv class=\"bm-sub\"\u003eAbout Regulations\u003c\/div\u003e\n\u003cp class=\"bm-text\"\u003eThis product \u003cspan class=\"bm-emph\"\u003ehas no catalytic converter and does not comply with Japan's vehicle safety regulations\u003c\/span\u003e. It does not meet the emissions standards required for road use in Japan and will not pass Japan's shaken inspection.\u003c\/p\u003e\n\u003cp class=\"bm-text\"\u003e\u003cspan class=\"bm-emph\"\u003eA product limited to circuit driving and competition use\u003c\/span\u003eis offered as such. Please refrain from using it on public roads. Confirm the intended use before deciding.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"bm-section\"\u003e\n\u003cdiv class=\"bm-sub\"\u003ePairing with the N55\u003c\/div\u003e\n\u003cp class=\"bm-text\"\u003eThe N55 is fitted with a twin-scroll single turbo. Because all the exhaust gathers into a single turbine,\u003cspan class=\"bm-emph\"\u003eResistance downstream directly affects turbo spin\u003c\/span\u003e. A configuration where the effect of the downpipe is easy to feel.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"bm-section\"\u003e\n\u003cdiv class=\"bm-sub\"\u003eStandard specification\u003c\/div\u003e\n\u003cul class=\"bm-list\"\u003e\n\u003cli\u003e\n\u003cstrong\u003eConfiguration\u003c\/strong\u003e: Catless downpipe\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompatible Engines\u003c\/strong\u003e: N55\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstallation\u003c\/strong\u003e: A bolt-on design for the factory mounting points\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"bm-note\"\u003eMaterial grades, pipe diameters and manufacturing details will be added to this page as soon as we have confirmed them with our supplier. Only the specifications we have verified are listed here.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"bm-section\"\u003e\n\u003cdiv class=\"bm-sub\"\u003eFitment\u003c\/div\u003e\n\u003cp class=\"bm-text\"\u003e\u003cstrong class=\"bm-emph\"\u003eBMW M135i \/ M2 \/ M235i \/ 335i \/ 435i (F-series) (N55)\u003c\/strong\u003ePurpose-built design. Depending on the year, grade, and modification history, adjustment may be needed at installation — please contact us before purchase if you have any questions.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"bm-section\"\u003e\n\u003cdiv class=\"bm-sub\"\u003ePricing and Shipping\u003c\/div\u003e\n\u003cp class=\"bm-text\"\u003eThe listed price \u003cspan class=\"bm-emph\"\u003eincludes shipping, customs duties and customs clearance fees\u003c\/span\u003e. There are no additional costs after the product arrives.\u003c\/p\u003e\n\u003cp class=\"bm-text\"\u003eThis product includes\u003cspan class=\"bm-emph\"\u003eCarries no brand logo engraving\u003c\/span\u003e. Taking the cost of logo work out of the production cost is what feeds back into the price. Nothing that affects performance — material, welding, finishing — has been cut.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"bm-section\"\u003e\n\u003cdiv class=\"bm-sub\"\u003eAfter Your Purchase\u003c\/div\u003e\n\u003cp class=\"bm-text\"\u003eAfter your purchase, please send us your \u003cspan class=\"bm-emph\"\u003evehicle model, year and VIN\u003c\/span\u003e via our contact form. Contacting us is required so we can identify your exact model.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"bm-section\"\u003e\n\u003cdiv class=\"bm-sub\"\u003eAbout Installation\u003c\/div\u003e\n\u003cp class=\"bm-text\"\u003eRemoving and installing the downpipe requires a lift and specialised tools. As it sits in a high-heat area right after the turbo,\u003cspan class=\"bm-emph\"\u003eWe strongly recommend installation at a garage or professional shop\u003c\/span\u003ewe will do so.\u003c\/p\u003e\n\u003cp class=\"bm-text\"\u003eRemoving the catalytic converter causes \u003cspan class=\"bm-emph\"\u003ethe O2 sensor to detect an abnormality and trigger a warning light\u003c\/span\u003e. An O2 sensor adapter or a change of control strategy through ECU tuning will be required. Discuss this with your fitting workshop in advance.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"bm-section\"\u003e\n\u003cdiv class=\"bm-sub\"\u003eWarranty\u003c\/div\u003e\n\u003cp class=\"bm-text\"\u003eFrom the day of delivery\u003cspan class=\"bm-emph\"\u003eOne year\u003c\/span\u003edefects caused by the product itself (welding faults, material faults, dimensional faults) will be replaced free of charge.\u003cspan class=\"bm-emph\"\u003eShipping costs for both the return and the replacement are covered by us\u003c\/span\u003ewe will do so.\u003c\/p\u003e\n\u003cp class=\"bm-note\"\u003e- Damage caused by installation work, normal wear from driving, and issues arising from combination with other manufacturers' products are not covered by the warranty.\u003cbr\u003e- When making a claim, please send us your VIN and photos of the affected area.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"bm-section\"\u003e\n\u003cdiv class=\"bm-sub\"\u003eAbout Lead Time\u003c\/div\u003e\n\u003cp class=\"bm-text\"\u003eAs these are built to order, dispatch normally takes \u003cspan class=\"bm-emph\"\u003e2–4 weeks\u003c\/span\u003e after order confirmationThis is the required lead time. Depending on production and logistics conditions, delivery may take longer than stated. If you're in a hurry, please contact us before purchasing.\u003c\/p\u003e\n\u003cp class=\"bm-note\"\u003e- This product is intended for off-road\/motorsport use. It cannot be used on public roads.\u003cbr\u003e- Depending on the vehicle's condition, year, and modification history, additional adjustment may be required at installation.\u003cbr\u003e- Weld discolouration and finish may vary slightly between units.\u003cbr\u003e- Exhaust parts are wear items. Please check regularly for exhaust leaks.\u003c\/p\u003e\n\u003cp class=\"bm-note\"\u003eBMW is a registered trademark of BMW AG. This is an aftermarket part and is neither manufactured by nor affiliated with BMW AG.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003c\/div\u003e","brand":"BIMMER+","offers":[{"title":"Default Title","offer_id":49484142969059,"sku":"BMP-DP-F20-003","price":41800.0,"currency_code":"JPY","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0777\/9457\/4563\/files\/hyflow-catless-downpipe-bmw-f20-f21-f87-f22-n55-img1_shopify_a6c04b68-dc30-4c0c-acdd-c219cfdfae5e.jpg?v=1785602581"},{"product_id":"hyflow-catless-downpipe-bmw-f80-f82-s55","title":"HYFLOW™ Catless Downpipe BMW M3 F80 \/ M4 F82 (S55)","description":"\u003cdiv class=\"bm-product\"\u003e\n\n\u003cstyle\u003e\n.bm-product{--bm-text:#111;--bm-sub:#4a5159;--bm-line:rgba(0,0,0,.12);max-width:980px;margin:0 auto;padding:0 22px;font-family:system-ui,-apple-system,Segoe UI,Roboto;color:var(--bm-text);line-height:1.75;font-size:15.5px;}\n.bm-section{margin:48px 0;padding-top:24px;border-top:1px solid var(--bm-line);}\n.bm-section:first-child{border-top:none;margin-top:12px;padding-top:0;}\n.bm-sub{font-size:12.5px;letter-spacing:.14em;text-transform:uppercase;color:var(--bm-sub);margin-bottom:14px;}\n.bm-text{max-width:720px;color:var(--bm-sub);}\n.bm-list{list-style:none;padding:0;margin:0;}\n.bm-list li{padding:10px 0;border-bottom:1px solid var(--bm-line);color:var(--bm-sub);}\n.bm-list li strong{color:var(--bm-text);font-weight:500;}\n.bm-num{list-style:none;padding:0;margin:0;counter-reset:item;}\n.bm-num li{padding:10px 0;border-bottom:1px solid var(--bm-line);color:var(--bm-sub);counter-increment:item;}\n.bm-num li::before{content:counter(item) \".  \";color:var(--bm-text);font-weight:500;}\n.bm-num li ul{margin-top:8px;padding-left:18px;}\n.bm-num li ul li{padding:4px 0;border:none;}\n.bm-note{color:var(--bm-sub);font-size:13.5px;}\n.bm-emph{color:var(--bm-text);font-weight:500;}\n.bm-tbl{width:100%;border-collapse:collapse;font-size:14.5px;}\n.bm-tbl th{text-align:left;padding:10px 14px 10px 0;border-bottom:1px solid var(--bm-line);color:var(--bm-sub);font-size:12.5px;letter-spacing:.08em;font-weight:400;white-space:nowrap;}\n.bm-tbl td{padding:12px 14px 12px 0;border-bottom:1px solid var(--bm-line);color:var(--bm-sub);vertical-align:top;}\n.bm-tbl td:first-child{color:var(--bm-text);font-weight:500;white-space:nowrap;}\n.bm-tbl td:nth-child(2){white-space:nowrap;}\n.bm-here{color:var(--bm-text);font-weight:500;}\n.bm-tag{display:inline-block;font-size:11.5px;letter-spacing:.06em;padding:2px 8px;border:1px solid var(--bm-line);border-radius:3px;color:var(--bm-sub);margin-left:8px;vertical-align:middle;}\n\/* bm-responsive-tbl *\/\n@media (max-width:600px){\n.bm-product{padding:0 16px;font-size:15px;}\n.bm-tbl{font-size:14.5px;}\n.bm-tbl,.bm-tbl tbody,.bm-tbl tr,.bm-tbl td{display:block;width:100%;}\n.bm-tbl tr:first-child{display:none;}\n.bm-tbl tr{padding:14px 0 16px;border-bottom:1px solid var(--bm-line);}\n.bm-tbl tr:last-child{border-bottom:none;}\n.bm-tbl td{border:none;padding:3px 0;white-space:normal;}\n.bm-tbl td:first-child{white-space:normal;font-size:15.5px;padding-bottom:6px;}\n.bm-tbl td:nth-child(2){white-space:normal;}\n.bm-tbl td[data-l]::before{content:attr(data-l) \": \";color:var(--bm-sub);font-size:12.5px;letter-spacing:.04em;}\n.bm-tag{margin-left:6px;}\n}\n\u003c\/style\u003e\n\n\u003cdiv class=\"bm-section\"\u003e\n\u003cdiv class=\"bm-sub\"\u003eProduct Overview\u003c\/div\u003e\n\u003cp class=\"bm-text\"\u003eThe S55 is a 3.0-litre twin-turbo straight-six. The factory downpipe has a catalytic converter built in, and while it cleans the exhaust gases,\u003cspan class=\"bm-emph\"\u003ethe part that narrows the exhaust path the most\u003c\/span\u003eThis is also true here. Positioned right after the turbo, resistance at this point directly affects how boost builds.\u003c\/p\u003e\n\u003cp class=\"bm-text\"\u003eThe HYFLOW™ catless downpipe removes the catalytic converter from this section, and\u003cspan class=\"bm-emph\"\u003eA path that runs straight downstream from the turbine outlet\u003c\/span\u003e. This creates that gap — as back-pressure drops, the turbo begins spinning up more readily, shortening the time between pressing the throttle and boost arriving.\u003c\/p\u003e\n\u003cp class=\"bm-note\"\u003eThis product has \u003cspan class=\"bm-emph\"\u003eno catalytic converter\u003c\/span\u003e. Please refer to \"About Regulations\" for the conditions of use.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"bm-section\"\u003e\n\u003cdiv class=\"bm-sub\"\u003eWhat Changes with a Downpipe\u003c\/div\u003e\n\u003cp class=\"bm-text\"\u003eExhaust flows in the order turbo → downpipe → mid-pipe → silencer. \u003cspan class=\"bm-emph\"\u003eThe downpipe sits immediately after the turbo\u003c\/span\u003e, where exhaust gas passes through at its highest temperature and pressure in this part of the system.\u003c\/p\u003e\n\u003cul class=\"bm-list\"\u003e\n\u003cli\u003e\n\u003cstrong\u003eReduced back pressure\u003c\/strong\u003e: pressure downstream of the turbine drops. Since the turbine spins on the momentum of the exhaust gas, the lighter the load on the outlet side, the faster it spools up\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBoost response\u003c\/strong\u003e: Turbo lag — the time between pressing the accelerator and boost coming on — is shortened. What you feel is less about peak output and more about\u003cspan class=\"bm-emph\"\u003eSharper mid-range acceleration\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eExhaust note\u003c\/strong\u003e: the factory downpipe also contributes to silencing, so replacing it changes both volume and character. The low end gains body, and high in the rev range you get a metallic edge that carries\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"bm-note\"\u003eWhile an exhaust swap changes the sound at the exit, a downpipe \u003cspan class=\"bm-emph\"\u003echanges the flow from the point closest to the engine\u003c\/span\u003e. Combine the two, and each moves into territory that neither reaches on its own.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"bm-section\"\u003e\n\u003cdiv class=\"bm-sub\"\u003eCombined with ECU tuning\u003c\/div\u003e\n\u003cp class=\"bm-text\"\u003eReplacing the downpipe improves exhaust flow, but\u003cspan class=\"bm-emph\"\u003eThis alone does not produce a major increase in output\u003c\/span\u003e. This is because the factory ECU controls boost pressure and ignition timing on the assumption of a factory exhaust, so changing only the hardware doesn't let the control system keep up.\u003c\/p\u003e\n\u003cp class=\"bm-text\"\u003eA downpipe shows its full potential \u003cspan class=\"bm-emph\"\u003ewhen combined with ECU tuning\u003c\/span\u003e. Improved flow lets boost pressure be raised to match, and only then does it show up as a measurable gain in output.\u003c\/p\u003e\n\u003cp class=\"bm-note\"\u003eA downpipe on its own changes both how quickly boost builds and how the car sounds. The honest way to put it: you will feel a difference, but output depends on the tune.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"bm-section\"\u003e\n\u003cdiv class=\"bm-sub\"\u003eAbout Regulations\u003c\/div\u003e\n\u003cp class=\"bm-text\"\u003eThis product \u003cspan class=\"bm-emph\"\u003ehas no catalytic converter and does not comply with Japan's vehicle safety regulations\u003c\/span\u003e. It does not meet the emissions standards required for road use in Japan and will not pass Japan's shaken inspection.\u003c\/p\u003e\n\u003cp class=\"bm-text\"\u003e\u003cspan class=\"bm-emph\"\u003eA product limited to circuit driving and competition use\u003c\/span\u003eis offered as such. Please refrain from using it on public roads. Confirm the intended use before deciding.\u003c\/p\u003e\n\u003cp class=\"bm-note\"\u003eIf you prefer a version that keeps the catalytic converter, we also offer, for the same model,\u003cspan class=\"bm-emph\"\u003eCatted downpipe\u003c\/span\u003e. We offer this.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"bm-section\"\u003e\n\u003cdiv class=\"bm-sub\"\u003ePairing with the S55\u003c\/div\u003e\n\u003cp class=\"bm-text\"\u003eThe S55 has two turbos, each serving three cylinders. The downpipes are likewise a pair, left and right, and this product is supplied as a set.\u003cbr\u003e\u003cbr\u003eThe S55 has a wide range of boost pressure control, and\u003cspan class=\"bm-emph\"\u003eReducing resistance on the exhaust side tends to show up in boost response\u003c\/span\u003eis the engine.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"bm-section\"\u003e\n\u003cdiv class=\"bm-sub\"\u003eStandard specification\u003c\/div\u003e\n\u003cul class=\"bm-list\"\u003e\n\u003cli\u003e\n\u003cstrong\u003eConfiguration\u003c\/strong\u003e: Catless downpipe\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompatible Engines\u003c\/strong\u003e: S55\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstallation\u003c\/strong\u003e: A bolt-on design for the factory mounting points\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"bm-note\"\u003eMaterial grades, pipe diameters and manufacturing details will be added to this page as soon as we have confirmed them with our supplier. Only the specifications we have verified are listed here.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"bm-section\"\u003e\n\u003cdiv class=\"bm-sub\"\u003eFitment\u003c\/div\u003e\n\u003cp class=\"bm-text\"\u003e\u003cstrong class=\"bm-emph\"\u003eBMW M3 F80 \/ M4 F82 (S55)\u003c\/strong\u003ePurpose-built design. Depending on the year, grade, and modification history, adjustment may be needed at installation — please contact us before purchase if you have any questions.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"bm-section\"\u003e\n\u003cdiv class=\"bm-sub\"\u003ePricing and Shipping\u003c\/div\u003e\n\u003cp class=\"bm-text\"\u003eThe listed price \u003cspan class=\"bm-emph\"\u003eincludes shipping, customs duties and customs clearance fees\u003c\/span\u003e. There are no additional costs after the product arrives.\u003c\/p\u003e\n\u003cp class=\"bm-text\"\u003eThis product includes\u003cspan class=\"bm-emph\"\u003eCarries no brand logo engraving\u003c\/span\u003e. Taking the cost of logo work out of the production cost is what feeds back into the price. Nothing that affects performance — material, welding, finishing — has been cut.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"bm-section\"\u003e\n\u003cdiv class=\"bm-sub\"\u003eAfter Your Purchase\u003c\/div\u003e\n\u003cp class=\"bm-text\"\u003eAfter your purchase, please send us your \u003cspan class=\"bm-emph\"\u003evehicle model, year and VIN\u003c\/span\u003e via our contact form. Contacting us is required so we can identify your exact model.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"bm-section\"\u003e\n\u003cdiv class=\"bm-sub\"\u003eAbout Installation\u003c\/div\u003e\n\u003cp class=\"bm-text\"\u003eRemoving and installing the downpipe requires a lift and specialised tools. As it sits in a high-heat area right after the turbo,\u003cspan class=\"bm-emph\"\u003eWe strongly recommend installation at a garage or professional shop\u003c\/span\u003ewe will do so.\u003c\/p\u003e\n\u003cp class=\"bm-text\"\u003eRemoving the catalytic converter causes \u003cspan class=\"bm-emph\"\u003ethe O2 sensor to detect an abnormality and trigger a warning light\u003c\/span\u003e. An O2 sensor adapter or a change of control strategy through ECU tuning will be required. Discuss this with your fitting workshop in advance.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"bm-section\"\u003e\n\u003cdiv class=\"bm-sub\"\u003eWarranty\u003c\/div\u003e\n\u003cp class=\"bm-text\"\u003eFrom the day of delivery\u003cspan class=\"bm-emph\"\u003eOne year\u003c\/span\u003edefects caused by the product itself (welding faults, material faults, dimensional faults) will be replaced free of charge.\u003cspan class=\"bm-emph\"\u003eShipping costs for both the return and the replacement are covered by us\u003c\/span\u003ewe will do so.\u003c\/p\u003e\n\u003cp class=\"bm-note\"\u003e- Damage caused by installation work, normal wear from driving, and issues arising from combination with other manufacturers' products are not covered by the warranty.\u003cbr\u003e- When making a claim, please send us your VIN and photos of the affected area.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"bm-section\"\u003e\n\u003cdiv class=\"bm-sub\"\u003eAbout Lead Time\u003c\/div\u003e\n\u003cp class=\"bm-text\"\u003eAs these are built to order, dispatch normally takes \u003cspan class=\"bm-emph\"\u003e2–4 weeks\u003c\/span\u003e after order confirmationThis is the required lead time. Depending on production and logistics conditions, delivery may take longer than stated. If you're in a hurry, please contact us before purchasing.\u003c\/p\u003e\n\u003cp class=\"bm-note\"\u003e- This product is intended for off-road\/motorsport use. It cannot be used on public roads.\u003cbr\u003e- Depending on the vehicle's condition, year, and modification history, additional adjustment may be required at installation.\u003cbr\u003e- Weld discolouration and finish may vary slightly between units.\u003cbr\u003e- Exhaust parts are wear items. Please check regularly for exhaust leaks.\u003c\/p\u003e\n\u003cp class=\"bm-note\"\u003eBMW is a registered trademark of BMW AG. This is an aftermarket part and is neither manufactured by nor affiliated with BMW AG.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003c\/div\u003e","brand":"BIMMER+","offers":[{"title":"Default Title","offer_id":49484143198435,"sku":"BMP-DP-F80-002","price":69800.0,"currency_code":"JPY","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0777\/9457\/4563\/files\/hyflow-catless-downpipe-bmw-f80-f82-s55-img1_shopify_3621c91d-08e0-4ef1-bb20-4bebb5f37918.jpg?v=1785602587"},{"product_id":"hyflow-catless-downpipe-bmw-g80-g82-s58","title":"HYFLOW™ Catless Downpipe BMW M3 G80 \/ M4 G82 (S58)","description":"\u003cdiv class=\"bm-product\"\u003e\n\n\u003cstyle\u003e\n.bm-product{--bm-text:#111;--bm-sub:#4a5159;--bm-line:rgba(0,0,0,.12);max-width:980px;margin:0 auto;padding:0 22px;font-family:system-ui,-apple-system,Segoe UI,Roboto;color:var(--bm-text);line-height:1.75;font-size:15.5px;}\n.bm-section{margin:48px 0;padding-top:24px;border-top:1px solid var(--bm-line);}\n.bm-section:first-child{border-top:none;margin-top:12px;padding-top:0;}\n.bm-sub{font-size:12.5px;letter-spacing:.14em;text-transform:uppercase;color:var(--bm-sub);margin-bottom:14px;}\n.bm-text{max-width:720px;color:var(--bm-sub);}\n.bm-list{list-style:none;padding:0;margin:0;}\n.bm-list li{padding:10px 0;border-bottom:1px solid var(--bm-line);color:var(--bm-sub);}\n.bm-list li strong{color:var(--bm-text);font-weight:500;}\n.bm-num{list-style:none;padding:0;margin:0;counter-reset:item;}\n.bm-num li{padding:10px 0;border-bottom:1px solid var(--bm-line);color:var(--bm-sub);counter-increment:item;}\n.bm-num li::before{content:counter(item) \".  \";color:var(--bm-text);font-weight:500;}\n.bm-num li ul{margin-top:8px;padding-left:18px;}\n.bm-num li ul li{padding:4px 0;border:none;}\n.bm-note{color:var(--bm-sub);font-size:13.5px;}\n.bm-emph{color:var(--bm-text);font-weight:500;}\n.bm-tbl{width:100%;border-collapse:collapse;font-size:14.5px;}\n.bm-tbl th{text-align:left;padding:10px 14px 10px 0;border-bottom:1px solid var(--bm-line);color:var(--bm-sub);font-size:12.5px;letter-spacing:.08em;font-weight:400;white-space:nowrap;}\n.bm-tbl td{padding:12px 14px 12px 0;border-bottom:1px solid var(--bm-line);color:var(--bm-sub);vertical-align:top;}\n.bm-tbl td:first-child{color:var(--bm-text);font-weight:500;white-space:nowrap;}\n.bm-tbl td:nth-child(2){white-space:nowrap;}\n.bm-here{color:var(--bm-text);font-weight:500;}\n.bm-tag{display:inline-block;font-size:11.5px;letter-spacing:.06em;padding:2px 8px;border:1px solid var(--bm-line);border-radius:3px;color:var(--bm-sub);margin-left:8px;vertical-align:middle;}\n\/* bm-responsive-tbl *\/\n@media (max-width:600px){\n.bm-product{padding:0 16px;font-size:15px;}\n.bm-tbl{font-size:14.5px;}\n.bm-tbl,.bm-tbl tbody,.bm-tbl tr,.bm-tbl td{display:block;width:100%;}\n.bm-tbl tr:first-child{display:none;}\n.bm-tbl tr{padding:14px 0 16px;border-bottom:1px solid var(--bm-line);}\n.bm-tbl tr:last-child{border-bottom:none;}\n.bm-tbl td{border:none;padding:3px 0;white-space:normal;}\n.bm-tbl td:first-child{white-space:normal;font-size:15.5px;padding-bottom:6px;}\n.bm-tbl td:nth-child(2){white-space:normal;}\n.bm-tbl td[data-l]::before{content:attr(data-l) \": \";color:var(--bm-sub);font-size:12.5px;letter-spacing:.04em;}\n.bm-tag{margin-left:6px;}\n}\n\u003c\/style\u003e\n\n\u003cdiv class=\"bm-section\"\u003e\n\u003cdiv class=\"bm-sub\"\u003eProduct Overview\u003c\/div\u003e\n\u003cp class=\"bm-text\"\u003eThe S58 is a 3.0L inline-6 twin-turbo engine. The factory downpipe has a catalytic converter built in, and while it cleans the exhaust gas,\u003cspan class=\"bm-emph\"\u003ethe part that narrows the exhaust path the most\u003c\/span\u003eThis is also true here. Positioned right after the turbo, resistance at this point directly affects how boost builds.\u003c\/p\u003e\n\u003cp class=\"bm-text\"\u003eThe HYFLOW™ catless downpipe removes the catalytic converter from this section, and\u003cspan class=\"bm-emph\"\u003eA path that runs straight downstream from the turbine outlet\u003c\/span\u003e. This creates that gap — as back-pressure drops, the turbo begins spinning up more readily, shortening the time between pressing the throttle and boost arriving.\u003c\/p\u003e\n\u003cp class=\"bm-note\"\u003eThis product has \u003cspan class=\"bm-emph\"\u003eno catalytic converter\u003c\/span\u003e. Please refer to \"About Regulations\" for the conditions of use.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"bm-section\"\u003e\n\u003cdiv class=\"bm-sub\"\u003eWhat Changes with a Downpipe\u003c\/div\u003e\n\u003cp class=\"bm-text\"\u003eExhaust flows in the order turbo → downpipe → mid-pipe → silencer. \u003cspan class=\"bm-emph\"\u003eThe downpipe sits immediately after the turbo\u003c\/span\u003e, where exhaust gas passes through at its highest temperature and pressure in this part of the system.\u003c\/p\u003e\n\u003cul class=\"bm-list\"\u003e\n\u003cli\u003e\n\u003cstrong\u003eReduced back pressure\u003c\/strong\u003e: pressure downstream of the turbine drops. Since the turbine spins on the momentum of the exhaust gas, the lighter the load on the outlet side, the faster it spools up\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBoost response\u003c\/strong\u003e: Turbo lag — the time between pressing the accelerator and boost coming on — is shortened. What you feel is less about peak output and more about\u003cspan class=\"bm-emph\"\u003eSharper mid-range acceleration\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eExhaust note\u003c\/strong\u003e: the factory downpipe also contributes to silencing, so replacing it changes both volume and character. The low end gains body, and high in the rev range you get a metallic edge that carries\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"bm-note\"\u003eWhile an exhaust swap changes the sound at the exit, a downpipe \u003cspan class=\"bm-emph\"\u003echanges the flow from the point closest to the engine\u003c\/span\u003e. Combine the two, and each moves into territory that neither reaches on its own.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"bm-section\"\u003e\n\u003cdiv class=\"bm-sub\"\u003eCombined with ECU tuning\u003c\/div\u003e\n\u003cp class=\"bm-text\"\u003eReplacing the downpipe improves exhaust flow, but\u003cspan class=\"bm-emph\"\u003eThis alone does not produce a major increase in output\u003c\/span\u003e. This is because the factory ECU controls boost pressure and ignition timing on the assumption of a factory exhaust, so changing only the hardware doesn't let the control system keep up.\u003c\/p\u003e\n\u003cp class=\"bm-text\"\u003eA downpipe shows its full potential \u003cspan class=\"bm-emph\"\u003ewhen combined with ECU tuning\u003c\/span\u003e. Improved flow lets boost pressure be raised to match, and only then does it show up as a measurable gain in output.\u003c\/p\u003e\n\u003cp class=\"bm-note\"\u003eA downpipe on its own changes both how quickly boost builds and how the car sounds. The honest way to put it: you will feel a difference, but output depends on the tune.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"bm-section\"\u003e\n\u003cdiv class=\"bm-sub\"\u003eAbout Regulations\u003c\/div\u003e\n\u003cp class=\"bm-text\"\u003eThis product \u003cspan class=\"bm-emph\"\u003ehas no catalytic converter and does not comply with Japan's vehicle safety regulations\u003c\/span\u003e. It does not meet the emissions standards required for road use in Japan and will not pass Japan's shaken inspection.\u003c\/p\u003e\n\u003cp class=\"bm-text\"\u003e\u003cspan class=\"bm-emph\"\u003eA product limited to circuit driving and competition use\u003c\/span\u003eis offered as such. Please refrain from using it on public roads. Confirm the intended use before deciding.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"bm-section\"\u003e\n\u003cdiv class=\"bm-sub\"\u003ePairing with the S58\u003c\/div\u003e\n\u003cp class=\"bm-text\"\u003eThe S58 uses two turbines, each serving three cylinders.\u003cspan class=\"bm-emph\"\u003eHaving two turbos means having two downpipes as well\u003c\/span\u003eFor this reason, changing only one side halves the effect. This product is configured as a matched left-and-right pair.\u003cbr\u003e\u003cbr\u003eAlso, an straight-six has evenly spaced firing intervals, so the exhaust pulses line up regularly. This regularity pays off once the flow path is refined, and\u003cspan class=\"bm-emph\"\u003eThe Benefit of Building a Free-Flowing Exhaust for an Straight-Six\u003c\/span\u003eis exactly this.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"bm-section\"\u003e\n\u003cdiv class=\"bm-sub\"\u003eStandard specification\u003c\/div\u003e\n\u003cul class=\"bm-list\"\u003e\n\u003cli\u003e\n\u003cstrong\u003eConfiguration\u003c\/strong\u003e: Catless downpipe\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompatible Engines\u003c\/strong\u003e: S58\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstallation\u003c\/strong\u003e: A bolt-on design for the factory mounting points\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"bm-note\"\u003eMaterial grades, pipe diameters and manufacturing details will be added to this page as soon as we have confirmed them with our supplier. Only the specifications we have verified are listed here.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"bm-section\"\u003e\n\u003cdiv class=\"bm-sub\"\u003eFitment\u003c\/div\u003e\n\u003cp class=\"bm-text\"\u003e\u003cstrong class=\"bm-emph\"\u003eBMW M3 G80 \/ M4 G82 (S58)\u003c\/strong\u003ePurpose-built design. Depending on the year, grade, and modification history, adjustment may be needed at installation — please contact us before purchase if you have any questions.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"bm-section\"\u003e\n\u003cdiv class=\"bm-sub\"\u003ePricing and Shipping\u003c\/div\u003e\n\u003cp class=\"bm-text\"\u003eThe listed price \u003cspan class=\"bm-emph\"\u003eincludes shipping, customs duties and customs clearance fees\u003c\/span\u003e. There are no additional costs after the product arrives.\u003c\/p\u003e\n\u003cp class=\"bm-text\"\u003eThis product includes\u003cspan class=\"bm-emph\"\u003eCarries no brand logo engraving\u003c\/span\u003e. Taking the cost of logo work out of the production cost is what feeds back into the price. Nothing that affects performance — material, welding, finishing — has been cut.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"bm-section\"\u003e\n\u003cdiv class=\"bm-sub\"\u003eAfter Your Purchase\u003c\/div\u003e\n\u003cp class=\"bm-text\"\u003eAfter your purchase, please send us your \u003cspan class=\"bm-emph\"\u003evehicle model, year and VIN\u003c\/span\u003e via our contact form. Contacting us is required so we can identify your exact model.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"bm-section\"\u003e\n\u003cdiv class=\"bm-sub\"\u003eAbout Installation\u003c\/div\u003e\n\u003cp class=\"bm-text\"\u003eRemoving and installing the downpipe requires a lift and specialised tools. As it sits in a high-heat area right after the turbo,\u003cspan class=\"bm-emph\"\u003eWe strongly recommend installation at a garage or professional shop\u003c\/span\u003ewe will do so.\u003c\/p\u003e\n\u003cp class=\"bm-text\"\u003eRemoving the catalytic converter causes \u003cspan class=\"bm-emph\"\u003ethe O2 sensor to detect an abnormality and trigger a warning light\u003c\/span\u003e. An O2 sensor adapter or a change of control strategy through ECU tuning will be required. Discuss this with your fitting workshop in advance.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"bm-section\"\u003e\n\u003cdiv class=\"bm-sub\"\u003eWarranty\u003c\/div\u003e\n\u003cp class=\"bm-text\"\u003eFrom the day of delivery\u003cspan class=\"bm-emph\"\u003eOne year\u003c\/span\u003edefects caused by the product itself (welding faults, material faults, dimensional faults) will be replaced free of charge.\u003cspan class=\"bm-emph\"\u003eShipping costs for both the return and the replacement are covered by us\u003c\/span\u003ewe will do so.\u003c\/p\u003e\n\u003cp class=\"bm-note\"\u003e- Damage caused by installation work, normal wear from driving, and issues arising from combination with other manufacturers' products are not covered by the warranty.\u003cbr\u003e- When making a claim, please send us your VIN and photos of the affected area.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"bm-section\"\u003e\n\u003cdiv class=\"bm-sub\"\u003eAbout Lead Time\u003c\/div\u003e\n\u003cp class=\"bm-text\"\u003eAs these are built to order, dispatch normally takes \u003cspan class=\"bm-emph\"\u003e2–4 weeks\u003c\/span\u003e after order confirmationThis is the required lead time. Depending on production and logistics conditions, delivery may take longer than stated. If you're in a hurry, please contact us before purchasing.\u003c\/p\u003e\n\u003cp class=\"bm-note\"\u003e- This product is intended for off-road\/motorsport use. It cannot be used on public roads.\u003cbr\u003e- Depending on the vehicle's condition, year, and modification history, additional adjustment may be required at installation.\u003cbr\u003e- Weld discolouration and finish may vary slightly between units.\u003cbr\u003e- Exhaust parts are wear items. Please check regularly for exhaust leaks.\u003c\/p\u003e\n\u003cp class=\"bm-note\"\u003eBMW is a registered trademark of BMW AG. This is an aftermarket part and is neither manufactured by nor affiliated with BMW AG.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003c\/div\u003e","brand":"BIMMER+","offers":[{"title":"Default Title","offer_id":49484143362275,"sku":"BMP-DP-G80-003","price":76800.0,"currency_code":"JPY","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0777\/9457\/4563\/files\/hyflow-catless-downpipe-bmw-g80-g82-s58-img1_shopify_559ef4f7-a22c-46b4-9ea5-b0ba27ce95d9.jpg?v=1785602592"},{"product_id":"hyflow-catted-downpipe-bmw-f80-f82-s55","title":"HYFLOW™ Catted Downpipe BMW M3 F80 \/ M4 F82 (S55)","description":"\u003cdiv class=\"bm-product\"\u003e\n\n\u003cstyle\u003e\n.bm-product{--bm-text:#111;--bm-sub:#4a5159;--bm-line:rgba(0,0,0,.12);max-width:980px;margin:0 auto;padding:0 22px;font-family:system-ui,-apple-system,Segoe UI,Roboto;color:var(--bm-text);line-height:1.75;font-size:15.5px;}\n.bm-section{margin:48px 0;padding-top:24px;border-top:1px solid var(--bm-line);}\n.bm-section:first-child{border-top:none;margin-top:12px;padding-top:0;}\n.bm-sub{font-size:12.5px;letter-spacing:.14em;text-transform:uppercase;color:var(--bm-sub);margin-bottom:14px;}\n.bm-text{max-width:720px;color:var(--bm-sub);}\n.bm-list{list-style:none;padding:0;margin:0;}\n.bm-list li{padding:10px 0;border-bottom:1px solid var(--bm-line);color:var(--bm-sub);}\n.bm-list li strong{color:var(--bm-text);font-weight:500;}\n.bm-num{list-style:none;padding:0;margin:0;counter-reset:item;}\n.bm-num li{padding:10px 0;border-bottom:1px solid var(--bm-line);color:var(--bm-sub);counter-increment:item;}\n.bm-num li::before{content:counter(item) \".  \";color:var(--bm-text);font-weight:500;}\n.bm-num li ul{margin-top:8px;padding-left:18px;}\n.bm-num li ul li{padding:4px 0;border:none;}\n.bm-note{color:var(--bm-sub);font-size:13.5px;}\n.bm-emph{color:var(--bm-text);font-weight:500;}\n.bm-tbl{width:100%;border-collapse:collapse;font-size:14.5px;}\n.bm-tbl th{text-align:left;padding:10px 14px 10px 0;border-bottom:1px solid var(--bm-line);color:var(--bm-sub);font-size:12.5px;letter-spacing:.08em;font-weight:400;white-space:nowrap;}\n.bm-tbl td{padding:12px 14px 12px 0;border-bottom:1px solid var(--bm-line);color:var(--bm-sub);vertical-align:top;}\n.bm-tbl td:first-child{color:var(--bm-text);font-weight:500;white-space:nowrap;}\n.bm-tbl td:nth-child(2){white-space:nowrap;}\n.bm-here{color:var(--bm-text);font-weight:500;}\n.bm-tag{display:inline-block;font-size:11.5px;letter-spacing:.06em;padding:2px 8px;border:1px solid var(--bm-line);border-radius:3px;color:var(--bm-sub);margin-left:8px;vertical-align:middle;}\n\/* bm-responsive-tbl *\/\n@media (max-width:600px){\n.bm-product{padding:0 16px;font-size:15px;}\n.bm-tbl{font-size:14.5px;}\n.bm-tbl,.bm-tbl tbody,.bm-tbl tr,.bm-tbl td{display:block;width:100%;}\n.bm-tbl tr:first-child{display:none;}\n.bm-tbl tr{padding:14px 0 16px;border-bottom:1px solid var(--bm-line);}\n.bm-tbl tr:last-child{border-bottom:none;}\n.bm-tbl td{border:none;padding:3px 0;white-space:normal;}\n.bm-tbl td:first-child{white-space:normal;font-size:15.5px;padding-bottom:6px;}\n.bm-tbl td:nth-child(2){white-space:normal;}\n.bm-tbl td[data-l]::before{content:attr(data-l) \": \";color:var(--bm-sub);font-size:12.5px;letter-spacing:.04em;}\n.bm-tag{margin-left:6px;}\n}\n\u003c\/style\u003e\n\n\u003cdiv class=\"bm-section\"\u003e\n\u003cdiv class=\"bm-sub\"\u003eProduct Overview\u003c\/div\u003e\n\u003cp class=\"bm-text\"\u003eThe S55 is a 3.0L inline-6 twin-turbo engine. The factory downpipe is structured to meet emissions regulations and quietness, and\u003cspan class=\"bm-emph\"\u003ethe point of greatest resistance in the exhaust flow\u003c\/span\u003eThis is that point. Because it comes right after the turbo, losses here directly affect boost response.\u003c\/p\u003e\n\u003cp class=\"bm-text\"\u003eThe HYFLOW™ downpipe reworks the flow path to secure clean flow from the turbo outlet.\u003cspan class=\"bm-emph\"\u003eWhen back pressure drops, the turbine begins spinning more freely\u003c\/span\u003e, throttle response becomes sharper.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"bm-section\"\u003e\n\u003cdiv class=\"bm-sub\"\u003eWhat Changes with a Downpipe\u003c\/div\u003e\n\u003cp class=\"bm-text\"\u003eExhaust flows in the order turbo → downpipe → mid-pipe → silencer. \u003cspan class=\"bm-emph\"\u003eThe downpipe sits immediately after the turbo\u003c\/span\u003e, where exhaust gas passes through at its highest temperature and pressure in this part of the system.\u003c\/p\u003e\n\u003cul class=\"bm-list\"\u003e\n\u003cli\u003e\n\u003cstrong\u003eReduced back pressure\u003c\/strong\u003e: pressure downstream of the turbine drops. Since the turbine spins on the momentum of the exhaust gas, the lighter the load on the outlet side, the faster it spools up\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBoost response\u003c\/strong\u003e: Turbo lag — the time between pressing the accelerator and boost coming on — is shortened. What you feel is less about peak output and more about\u003cspan class=\"bm-emph\"\u003eSharper mid-range acceleration\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eExhaust note\u003c\/strong\u003e: the factory downpipe also contributes to silencing, so replacing it changes both volume and character. The low end gains body, and high in the rev range you get a metallic edge that carries\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"bm-note\"\u003eWhile an exhaust swap changes the sound at the exit, a downpipe \u003cspan class=\"bm-emph\"\u003echanges the flow from the point closest to the engine\u003c\/span\u003e. Combine the two, and each moves into territory that neither reaches on its own.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"bm-section\"\u003e\n\u003cdiv class=\"bm-sub\"\u003eCombined with ECU tuning\u003c\/div\u003e\n\u003cp class=\"bm-text\"\u003eReplacing the downpipe improves exhaust flow, but\u003cspan class=\"bm-emph\"\u003eThis alone does not produce a major increase in output\u003c\/span\u003e. This is because the factory ECU controls boost pressure and ignition timing on the assumption of a factory exhaust, so changing only the hardware doesn't let the control system keep up.\u003c\/p\u003e\n\u003cp class=\"bm-text\"\u003eA downpipe shows its full potential \u003cspan class=\"bm-emph\"\u003ewhen combined with ECU tuning\u003c\/span\u003e. Improved flow lets boost pressure be raised to match, and only then does it show up as a measurable gain in output.\u003c\/p\u003e\n\u003cp class=\"bm-note\"\u003eA downpipe on its own changes both how quickly boost builds and how the car sounds. The honest way to put it: you will feel a difference, but output depends on the tune.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"bm-section\"\u003e\n\u003cdiv class=\"bm-sub\"\u003ePairing with the S55\u003c\/div\u003e\n\u003cp class=\"bm-text\"\u003eThe S55 has two turbos, each serving three cylinders. The downpipes are likewise a pair, left and right, and this product is supplied as a set.\u003cbr\u003e\u003cbr\u003eThe S55 has a wide range of boost pressure control, and\u003cspan class=\"bm-emph\"\u003eReducing resistance on the exhaust side tends to show up in boost response\u003c\/span\u003eis the engine.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"bm-section\"\u003e\n\u003cdiv class=\"bm-sub\"\u003eStandard specification\u003c\/div\u003e\n\u003cul class=\"bm-list\"\u003e\n\u003cli\u003e\n\u003cstrong\u003eConfiguration\u003c\/strong\u003e: Catted downpipe\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompatible Engines\u003c\/strong\u003e: S55\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstallation\u003c\/strong\u003e: A bolt-on design for the factory mounting points\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"bm-note\"\u003eMaterial grades, pipe diameters and manufacturing details will be added to this page as soon as we have confirmed them with our supplier. Only the specifications we have verified are listed here.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"bm-section\"\u003e\n\u003cdiv class=\"bm-sub\"\u003eFitment\u003c\/div\u003e\n\u003cp class=\"bm-text\"\u003e\u003cstrong class=\"bm-emph\"\u003eBMW M3 F80 \/ M4 F82 (S55)\u003c\/strong\u003ePurpose-built design. Depending on the year, grade, and modification history, adjustment may be needed at installation — please contact us before purchase if you have any questions.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"bm-section\"\u003e\n\u003cdiv class=\"bm-sub\"\u003ePricing and Shipping\u003c\/div\u003e\n\u003cp class=\"bm-text\"\u003eThe listed price \u003cspan class=\"bm-emph\"\u003eincludes shipping, customs duties and customs clearance fees\u003c\/span\u003e. There are no additional costs after the product arrives.\u003c\/p\u003e\n\u003cp class=\"bm-text\"\u003eThis product includes\u003cspan class=\"bm-emph\"\u003eCarries no brand logo engraving\u003c\/span\u003e. Taking the cost of logo work out of the production cost is what feeds back into the price. Nothing that affects performance — material, welding, finishing — has been cut.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"bm-section\"\u003e\n\u003cdiv class=\"bm-sub\"\u003eAfter Your Purchase\u003c\/div\u003e\n\u003cp class=\"bm-text\"\u003eAfter your purchase, please send us your \u003cspan class=\"bm-emph\"\u003evehicle model, year and VIN\u003c\/span\u003e via our contact form. Contacting us is required so we can identify your exact model.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"bm-section\"\u003e\n\u003cdiv class=\"bm-sub\"\u003eAbout Installation\u003c\/div\u003e\n\u003cp class=\"bm-text\"\u003eRemoving and installing the downpipe requires a lift and specialised tools. As it sits in a high-heat area right after the turbo,\u003cspan class=\"bm-emph\"\u003eWe strongly recommend installation at a garage or professional shop\u003c\/span\u003ewe will do so.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"bm-section\"\u003e\n\u003cdiv class=\"bm-sub\"\u003eWarranty\u003c\/div\u003e\n\u003cp class=\"bm-text\"\u003eFrom the day of delivery\u003cspan class=\"bm-emph\"\u003eOne year\u003c\/span\u003edefects caused by the product itself (welding faults, material faults, dimensional faults) will be replaced free of charge.\u003cspan class=\"bm-emph\"\u003eShipping costs for both the return and the replacement are covered by us\u003c\/span\u003ewe will do so.\u003c\/p\u003e\n\u003cp class=\"bm-note\"\u003e- Damage caused by installation work, normal wear from driving, and issues arising from combination with other manufacturers' products are not covered by the warranty.\u003cbr\u003e- When making a claim, please send us your VIN and photos of the affected area.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"bm-section\"\u003e\n\u003cdiv class=\"bm-sub\"\u003eAbout Lead Time\u003c\/div\u003e\n\u003cp class=\"bm-text\"\u003eAs these are built to order, dispatch normally takes \u003cspan class=\"bm-emph\"\u003e2–4 weeks\u003c\/span\u003e after order confirmationThis is the required lead time. Depending on production and logistics conditions, delivery may take longer than stated. If you're in a hurry, please contact us before purchasing.\u003c\/p\u003e\n\u003cp class=\"bm-note\"\u003e- Depending on the vehicle's condition, year, and modification history, additional adjustment may be required at installation.\u003cbr\u003e- Weld discolouration and finish may vary slightly between units.\u003cbr\u003e- Exhaust parts are wear items. Please check regularly for exhaust leaks.\u003c\/p\u003e\n\u003cp class=\"bm-note\"\u003eBMW is a registered trademark of BMW AG. This is an aftermarket part and is neither manufactured by nor affiliated with BMW AG.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003c\/div\u003e","brand":"BIMMER+","offers":[{"title":"Default Title","offer_id":49484143689955,"sku":"BMP-DP-F80-003","price":116800.0,"currency_code":"JPY","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0777\/9457\/4563\/files\/hyflow-catted-downpipe-bmw-f80-f82-s55-img1_shopify_bcf20571-283c-4bdc-b495-b4a1791e9072.jpg?v=1785602598"}],"url":"https:\/\/bimmer.plus\/en-kr\/collections\/bmw-downpipes.oembed","provider":"BIMMER+","version":"1.0","type":"link"}