MMR Performance Valved/Active Exhaust for MINI Cooper S & JCW F56 F55 F54 Gen 3 Hatch/Clubman (2013-2019) – 2.75in Catback, 3in 300-Cell Sports Cat Downpipe – Remote Switchable Valvetronic, Carbon Fibre Tips – B48 – Cat-Back or Turbo-Back

Switchable Performance Exhaust System for MINI Gen 3 F56, F55, F54 Cooper S and JCW

Give your MINI the soundtrack and response it deserves with this premium switchable system. Engineered for the B48-powered Cooper S and John Cooper Works, this setup delivers serious flow, addictive tone and on-demand volume control via the included wireless remote. Choose a rear section upgrade, a high-flow catted front pipe, or a complete turbo-back package to suit how you drive.

Why enthusiasts choose this setup

• Quiet-to-spirited at the press of a button thanks to remote valve control with two key fobs included.
• 2.75 inch rear section minimises restriction and sharpens throttle response on B48 engines.
• Tuned centre section and rear silencer enhance tone while keeping motorway cruising civilised.
• 3 inch front section with 300 cell high-flow catalytic converter reduces back pressure for improved gas speed.
• Thermal shielding on the front section helps manage under-bonnet temperatures and supports consistent performance.
• Twin carbon fibre tailpipes add a motorsport-inspired finish that looks as good as it sounds.
• Supplied complete with clamps, valve module, wiring loom and everything needed for installation.

Build your setup

• Valve-controlled catback 2.75 inch rear section. Compatible with the factory front pipe.
• 3 inch catted front pipe using a 300 cell sports catalyst for a serious flow increase over stock.
• Full turbo-back configuration for the ultimate blend of sound, response and visual impact.

Compatibility

• MINI Hatch F56 3-door, F55 5-door, Clubman F54
• Years: 2013 to 2019
• Models: Cooper S and John Cooper Works
• Engine: B48

What is included

• Your chosen configuration: valve-controlled rear section and or 3 inch catted front section.
• Valve motor, control module, wiring loom and two remote fobs.
• All required clamps and fittings.
• Pair of carbon fibre tailpipe trims with premium branding.

Real-world results

We run this system ourselves and our customers are thrilled. In closed mode it is refined and perfectly suited to daily use. Open the valve and it awakens the B48 with a deep, purposeful tone that feels every bit as exciting as it sounds. The freer-flowing design pairs brilliantly with tuning and transforms the character of the car without the drone you want to avoid.

Professional installation

Want it fitted properly first time? Book installation with MJ Modifications in Warwickshire. Email info@mjmodifications.co.uk for a fitting quote and availability.

Helpful information

• The valve-controlled rear section can be used with the factory front pipe or paired with the 3 inch catted front section.
• Please check local regulations and MOT requirements when modifying emissions-related components.

Download fitting guide

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