Cobra BMW N55 F22 M235i Sports Cat and De-Cat Downpipe
Unlock more performance and sound from your BMW M235i with the Cobra Sport 3 inch 76.2 mm turbo downpipe. Designed for the N55-powered F22 M235i, this direct-fit upgrade replaces the restrictive factory catalyst from the turbo to the centre section, improving exhaust flow, turbo response and overall drivability. Precision-built in the UK from certified 304 stainless steel with beautiful TIG welds and CNC SS304 flanges, this Cobra Sport downpipe is the go-to choice for a quality BMW M235i N55 downpipe upgrade.
Choose your configuration
- Sports Cat Downpipe – Part Number: BM81. High-flow sports catalyst for performance gains with road legality. This option is designed to enable you to pass a UK MOT emissions test or police roadside checks.
- De-Cat Downpipe – Part Number: BM82. Catless de-cat downpipe for maximum flow and motorsport use. For off-road and track use only. This option will not pass a UK MOT emissions test or police roadside checks.
Why upgrade your BMW M235i downpipe
Reducing backpressure on the N55 turbocharger allows quicker spool, sharper throttle response and a deeper, more purposeful exhaust tone. This Cobra Sport BMW M235i downpipe delivers exactly that, while maintaining excellent fitment and reliability. If you are searching for BMW M235i downpipe, BMW N55 downpipe, F22 M235i sports cat, F22 M235i de-cat, BMW M235i catless downpipe, or Cobra Sport downpipe for BMW, this is the performance exhaust part you want.
Key features
- 3 inch 76.2 mm mandrel-bent pipework from turbo to centre exhaust section.
- Hand-crafted, TIG-welded 304 grade stainless steel for strength and longevity.
- CNC SS304 stainless steel flanges for a precise, leak-free seal.
- Direct replacement for the standard catalyst. Bolt-on fitment.
- All relevant fittings and gaskets supplied for installation.
- Manufactured in the UK by Cobra Sport.
- Cobra Sport Lifetime Warranty non-transferable.
Compatibility
BMW 2 Series F22 M235i with N55 engine. If you are looking for BMW M235i F22 downpipe upgrade, BMW N55 turbo downpipe, BMW M235i sports cat, or BMW M235i de-cat, this Cobra Sport unit is engineered for your platform.
Installation and support
We recommend professional fitting. Nforcd offer in-house installation in Warwickshire. Email Sales@nforcd.com for a fitting quote and availability.
Emissions and legal notice
- Sports Cat BM81: Designed to enable you to pass a UK MOT emissions test and police roadside checks.
- De-Cat BM82: For motorsport and off-road use only. Will not pass a UK MOT emissions test or police roadside checks.
Nforcd notes
- We have installed and run these Cobra Sport M235i downpipes on customer builds. Fit and finish are excellent, with consistently positive feedback.
- We highly recommend replacing the downpipe to turbo gasket when installing the catless de-cat downpipe.
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Part numbers
- BM81 – Sports Cat Downpipe
- BM82 – De-Cat Downpipe