Cobra Sport BMW 2 Series M235i F22 N55 3in Turbo Downpipe/Front Pipe/Turbo Outlet - High Flow Sports Cat BM81 or Decat/Catless BM82 - 76mm T304 Stainless Exhaust Upgrade (Cat Delete)

Cobra Sport M235i F22 N55 Performance Front Pipe Upgrade

Transform your BMW 2 Series M235i with a high quality turbo outlet front pipe that frees up exhaust flow, sharpens response and unlocks a richer six-cylinder soundtrack. Precision engineered in the UK by Cobra Sport from premium T304 stainless, this 76.2 mm system replaces the restrictive primary catalyst section from the turbine housing to the centre pipe. Expect quicker spool, crisper throttle feel and a more engaging drive, all with factory-like fitment and long term durability.

Choose your setup

• High flow sports catalyst - Part number: BM81. A performance metallic cat designed to help meet UK MOT emissions requirements while significantly reducing back pressure compared with the OE converter.
• Decat straight through - Part number: BM82. Maximum gas flow and the loudest, most aggressive tone for track or off-road use only. This option will not pass a UK MOT emissions test or roadside checks.

Why this upgrade works

• Large bore 76.2 mm mandrel bent pipework improves turbine efficiency for faster boost build and stronger mid-range pull.
• Noticeably deeper, more purposeful exhaust note without drone when paired with standard cat-back systems.
• Direct replacement front section for the N55 M235i - no cutting, no welding, bolt-on fit.

Built to last

• T304 grade stainless construction with hand crafted TIG welds.
• CNC machined 304 stainless flanges for a precise, leak free seal.
• All required fittings and gaskets supplied for install.
• Made in the UK by Cobra Sport with a Lifetime Warranty non-transferable.

Compatibility

BMW M235i Coupe F22 with the N55 turbocharged straight-six engine.

Installation and support

Professional fitting recommended. MJ Modifications offers in-house installation in Warwickshire. For a fitting quote and availability email info@mjmodifications.co.uk.

Our experience

We have fitted these Cobra Sport units to customer cars and our own projects. Fitment is spot on, finish is excellent and feedback on performance and sound has been consistently positive.

Emissions and legality

• BM81 sports catalyst: Designed to enable you to pass a UK MOT emissions test and police roadside checks.
• BM82 decat: For motorsport and off-road use only. Will not pass a UK MOT emissions test or roadside checks.

Helpful install note

We recommend replacing the turbo to front pipe gasket during installation, especially when choosing the decat option.

Part numbers

• BM81 - Sports catalyst front pipe
• BM82 - Decat front pipe

Search friendly terms

BMW M235i front pipe, N55 exhaust upgrade, F22 turbo outlet pipe, M235i sports catalytic converter, M235i cat delete, N55 decat pipe, BMW 2 Series performance exhaust front section, Cobra Sport M235i front pipe, 76mm down pipe M235i, N55 primary cat replacement, M235i race pipe, BMW M235i high flow cat, F22 N55 front catalyst, M235i exhaust pre-cat removal, BMW N55 turbo outlet upgrade.

Order today for faster spool, stronger response and a proper straight-six soundtrack.