Remus Racing Valved Rear Silencer Exhaust + 200 Cell Sports Cat for BMW M135i F20/F21 (2013-2015 LCI, N55) - EC Approved, Twin 84mm Street Race Black Chrome Carbon Tips

Remus Performance Back Box and 200cpsi Sports Catalyst for BMW 1 Series M135i F20 F21 N55 LCI

Give your M135i the soundtrack and response it deserves with this Remus valved rear section paired to a high-flow 200cpsi sports catalyst. Retaining factory flap control via the original electronics, this switchable system delivers a deep, refined tone on the cruise and an aggressive, motorsport-inspired note when you open it up. The twin 84 mm outlets finished in black chrome with carbon fibre sleeves transform the rear end with a sharp, premium look while maintaining road legality with ECE type approval.

Built from high grade stainless steel, the Remus assembly reduces back pressure for improved throttle response and enhanced drivability on the N55 turbocharged engine. It is an ideal upgrade for drivers searching for a reliable, bolt-on sound and performance solution from a leading European exhaust specialist.

Why enthusiasts choose this setup

• Switchable flap system that keeps the OEM valve functionality for seamless integration
• High-flow 200cpsi sports catalyst for better gas flow and sharper response
• Noticeable performance feel with a richer, bassy tone and minimal cabin drone
• Premium twin 84 mm black chrome tips with carbon fibre sleeves for a purposeful finish
• Precision fit stainless steel construction designed for longevity and corrosion resistance
• ECE type approved for road use

Fitment and compatibility

BMW M135i 1 Series F20 five door and F21 three door with N55B30, LCI, 240 kW. Models from July 2013 to 2015. Please confirm your build date before ordering.

Tip specification

Twin round outlets, 84 mm diameter each, black chrome finish with carbon fibre inserts from the Remus Street Race line.

Real world results

We have supplied and installed this Remus system on customer M135i cars and feedback has been consistently positive. Owners love the improved tone, the quality of the finish and the way the car feels more eager through the revs. It is civilised on the commute with the valve shut and comes alive when you want it to.

Professional installation

For fitting, setup and aftercare, book with MJ Modifications in Warwickshire. Request a fitting quote at info@mjmodifications.co.uk.

Search-friendly terms to help you find the right upgrade

BMW M135i F20 exhaust upgrade, M135i F21 back box, N55 performance exhaust system, switchable valve exhaust 1 Series, flap controlled backbox M135i, 200cpsi sports catalyst N55, high flow sports cat 1 Series LCI, ECE approved performance exhaust, twin 84mm black chrome carbon fibre tips, Remus performance exhaust for BMW hatchback, M135i tuning parts, cat-back style rear section, performance rear silencer M135i, BMW F20 F21 N55 exhaust upgrade UK.