Remus Valved Back Box + 200 Cell High-Flow Sports Cat for BMW 1 Series M135i F20/F21 LCI (2013-2015, N55) | Switchable Exhaust/Valve-Flap Silencer | Performance Sports Catalyst/Downpipe | Twin 84mm Black Chrome Tips | ECE/EC Approved UK Road Legal

Remus valve-controlled back box with 200 cpsi high-flow sports catalyst for BMW M135i F20 F21 LCI

Give your M135i the sound and response it deserves. This Remus system combines a switchable valve-flap rear section with a 200 cpsi sports catalyst to unlock a deeper tone, sharper throttle feel and a premium finish that looks right at home on the BMW 1 Series hot hatch. Built in stainless steel and tailored to the facelift F20 and F21 with the N55 turbo engine, it integrates with the factory electronics so your drive modes continue to control the exhaust valves.

If you are searching for BMW M135i exhaust upgrade UK, F20 F21 performance exhaust, M135i switchable exhaust, N55 sports catalyst, high flow cat for M135i, Remus back box M135i, BMW 1 Series M135i tuning parts or twin 84 mm black chrome tips, this is the proven choice.

Highlights

• Valve-controlled rear section that uses the original BMW actuator for Comfort, Sport and Sport Plus operation
• 200 cpsi high-flow sports catalyst to reduce back pressure and improve gas velocity
• Rich, motorsport-inspired soundtrack with a civilised cruise and an aggressive note under load
• Precision stainless steel construction with excellent fit and finish
• ECE type-approved for UK and EU road use
• Twin 84 mm black chrome tailpipe finishers with straight cut carbon trim for a purposeful look

Who is it for

Ideal for BMW 1 Series M135i owners who want a switchable valve-flap exhaust with a 200 cpsi sports cat, a deeper tone and daily drivability. Perfect for enthusiasts who want a quality brand, a bolt-on upgrade feel and a clean OEM-plus appearance.

Compatibility

• BMW 1 Series M135i F20 F21 LCI with N55B30 engine, 240 kW
• Build dates from July 2013 to 2015

Tailpipe specification

• 2 x 84 mm Street Race black chrome outlets, straight cut, carbon insert

What is included

• Remus valve-controlled rear section
• 200 cpsi sports catalyst section
• Twin 84 mm black chrome tailpipe finishers with carbon insert

Why choose this upgrade with MJ Modifications

We have fitted and run this Remus system on our own cars and for many clients. Feedback has been consistently excellent on sound quality, fitment and everyday manners. If you want an M135i exhaust that delivers performance feel, a premium tone and great looks, this setup is a customer favourite.

Professional fitting

For installation by BMW performance specialists, book your fitting with MJ Modifications in Warwickshire. Request a quote at info@mjmodifications.co.uk.

Also searched as

BMW M135i F20 exhaust upgrade, M135i F21 valve flap exhaust, N55 M135i high flow cat, M135i switchable back box, BMW 1 Series performance exhaust UK, Remus M135i system, sports catalyst M135i, black chrome tailpipes 84mm, M135i LCI exhaust, BMW M135i turbo six exhaust

Notes

• ECE approval included
• Please check your vehicle build date to confirm compatibility from July 2013 onwards

Upgrade your BMW M135i with a Remus system that sounds incredible, looks superb and integrates perfectly with your car. Order today.