TODOROKI™ VALVE RS Made-to-Order Valved Exhaust｜BMW M2 F87 (N55)

The N55 is a 3.0-litre single-turbo straight-six — the last N55-series engine to appear in an M car, fitted to the M2 F87. A twin-scroll turbo makes it tractable from low revs, and paired with a compact body the result is unusually complete. The factory exhaust, though, is designed to deliberately suppress sound pressure through its silencers.The exhaust note alone is too understated for what the car is capable of. This is the source of the first thing that feels lacking on the M2 F87.

TODOROKI™ VALVE RS replaces everything downstream of the catalytic converterQuad-exit cat-back system. A straight-through mid-pipe carries the exhaust by the shortest possible route, and an electronically controlled valve switches the volume.With the valve closed, quietness on par with factory; open, the N55's natural pull and sound pressurerestoring it.

This productMade to orderThis is made to order. Once your order is confirmed, we build one unit exactly to your chosen specification.

The N55 is a single-turbo engine.Exhaust exits the turbo already combined into a single stream. To make this a quad-exit, the exhaust has to be split left and right somewhere.Where that branch point is placed is the key design consideration for this model.

TODOROKI™ VALVE RSSplits into two pipes ahead of the mid-pipe. Placing the split further forward makes it easier to match the path lengths from there to each silencer. Get the two sides arriving together and even a quad-exit system keeps its balance.

After the split, both sides use straight construction.Split it early, then run the shortest possible path the rest of the way. It's the most straightforward configuration for routing a single turbo's exhaust out through four tips.

The mid-pipe of the TODOROKI™ VALVE RS isStraight-through construction. No resonators, no bends: gas leaving the catalytic converter goes straight to the centre silencer. It is the most rational layout there is — no unnecessary resistance anywhere in the path.

If pure exhaust efficiency is your only goal, this is the most rational configuration.That said, straight construction has a clear drawback: with no silencing element, the volume stays the same at all timespoint. The volume doesn't change whether you're driving through a residential area or starting the car early in the morning.

The valved exhaust is what solves this.

• Valve closed: A quiet path that runs through the centre exhaust. Volume drops to near-factory levels, so it won't be an issue when driving in residential areas or starting the car early in the morning
• Valve open: The straight path opens up, maximising exhaust efficiency

Exhaust efficiency and quietness are normally a trade-off, but a design that switches the flow path itself lets you have both.Releasing the exhaust efficiency gained from the straight construction only when needed. Because the design has no silencing structure, the swing between valve open and closed is more pronounced.

This productElectronically controlled valve (remote-operated) as standard. If you'd like it changed to link with the factory valve, please contact us before purchase.

Whichever method you choose,Please be sure to let us know at the time of purchase. Specifications are locked in during production, so changes cannot be made afterward.

• Straight Mid-pipe: no resonators, no bends, no resistance. Gas velocity is carried through to the centre silencer intact, so the system is far less likely to choke high in the rev range
• Centre exhaust: A single silencer is positioned at the centre of the car. With the valve closed, exhaust routes through it for sound suppression; when open, it's bypassed
• Electronically controlled valve: switches the exhaust path just before the silencer. Closed, gas runs the quiet route through the silencer; open, it takes the straight path — so volume and character change together
• Quad-exit: Exhaust exits through four tips, two on each side. This configuration secures exhaust efficiency while achieving an appearance befitting an M model
• Cat-back Structure: The factory catalytic converter is left in place, replacing only the section downstream of it. As it uses the factory hanger positions, no modification to the vehicle is required

Exhaust fitment precision is determined by the actual car, not by drawings. The TODOROKI™ version for the M2 F87Designed from 3D scan data of an actual car's underbody. Factory hanger positions, floor geometry and clearance to the rear bumper aperture are all pinned down from measured values, so it fits without modifying the car.

Welding isFully TIG-welded at high temperature. The base material is SUS304 stainless steel at a full 1.5mm wall thickness. An exhaust takes heat and vibration continuously, so the quality of every joint is the durability of the system.

The N55 is a single-turbo engine. Exhaust from all six cylinders passes through one turbine before flowing downstream, soExhaust exits after being consolidated into a single pipeHow the exhaust is handled from that point onward directly shapes the character of the sound.

A straight-six also fires at even intervals, so first- and second-order vibrations cancel each other naturally. Being able to raise sound pressure without touching that smoothness is the single biggest reason to pair a free-flowing exhaust with a straight-six. The N55 keeps the low-rev tractability that defines it and gains reach at the top.

This productExclusively for the M2 F87 (N55). From 2018 onward, M2 Competition (S55)does not fit.

For the M2 Competition we offer three separate grades: VALVE RS with an equal-length mid-pipe and Z-pipe, its full-titanium version, and the valveless STRAIGHT. If you are unsure which chassis you have, please ask before ordering.

RS is a grade designed around one standard: no compromise on price, quality, or sound.The silencer body features the TODOROKI™ logo. If we are going to put our name on it, it goes on every product regardless of price point. Costs that contribute nothing to performance or sound are not carried; that money goes into material, construction and the price.

Focusing exclusively on BMW lets us share jigs and validation processes across products, and reading demand chassis by chassis removes the losses that come with small-batch production. Optimising every stage — administration, manufacturing and shipping — is what makes this price possible.

TODOROKI™ is made to order, one car's worth at a time, in partnership with our production facility. Fabrication begins once your order is confirmed, and BIMMER+ selects and inspects every specification before dispatch.

• Customization available on request: We're happy to discuss exhaust specifications with you before purchase
• Volume direction can also be specified: We can accommodate requests such as "more sound with the valve open" or "quieter with the valve closed"
• Additional Charges: Additional charges may apply depending on the specification
• Prior consultation required: If you'd like customisation, please be sure to contact us before purchase
• Notes: Some customisations may not be available depending on production status or vehicle model

1. Tip finish
   • Choose from 7 options (the numbers correspond to the list in the product images)
2. Tip (exhaust tip) diameter
3. Exhaust Body Wall Thickness / Pipe Diameter
4. Valve control method
   • Electronically controlled valve / remote-operated (standard)
   • Linked to the factory valve (please let us know at the time of purchase)

• Body Material: SUS304 stainless steel
• Wall thickness: 1.5mm
• Structure: Cat-back (replaces everything after the catalytic converter). 4 tips
• Mid-pipe: Straight construction
• Valve mechanism: Electronically controlled valve (remote-operated, standard) / factory valve linkage also available
• Welding: Fully TIG-welded
• Installation: Uses the factory hanger positions. A bolt-on design that requires no modification to the car
• Logo: TODOROKI™ logo on the silencer body

• Mid-pipe
• Centre exhaust
• Exhaust Tips (4 pieces)
• Valve controller, remote, and wiring
• Band clamp set

We are publishing actual exhaust-note recordings progressively as they become available for each model. If you're in a hurry, please use the contact form to"Vehicle model and chassis" and "sound sample request"Please include this when you contact us. For models we already have a sound sample for, we'll send it as is; for models still in preparation,We prioritise preparation for vehicle models based on customer requests.

BMW M2 F87 (N55)Purpose-built design.

Does not fit the M2 Competition (S55-equipped)We offer a separate product for the M2 Competition.

BIMMER+ organises its collections by chassis code. Search from your own chassis and only the parts that fit will appear. Model year, trim and prior modifications may mean some adjustment is needed at fitting, so please ask before you buy if anything is unclear.

The listed priceShipping, customs duties, and customs clearance fees are all included.There are no additional costs after the product arrives.

Exhausts are bulky and heavy, and shipping alone runs to around ¥20,000. Some sellers bill freight and domestic forwarding separately from the product price; BIMMER+ quotes one all-inclusive figure.

After your purchase, be sure to"Vehicle model / year / VIN" via our contact form. Even if you do not want any customisation, please still get in touch so we can identify your car.

Removing and fitting an exhaust requires specialist tools and a lift. We strongly recommend installation by a qualified workshop or specialist. Wiring for the valve controller is also involved, so if you are not confident about fitting it yourself, please use a professional.

On cars with a factory valve, removing it may trigger a warning light. If that happens, a canceller or similar solution will be required.

As these are built to order, shipping after order confirmation typically takes2–4 weeks. Customisation, production and logistics can push this beyond the stated period. If you are working to a deadline, talk to us before ordering.