Mini Cooper S / JCW F56 LCI (Mk3) 3" Cat-Back/Catback Performance Exhaust System - T304 Stainless, UK Made, 76mm - Resonated or Non-Resonated - Replaces Mid Pipe & Back Box/Muffler - 3.5" Black Ceramic or Carbon Tips (2018+)
Transform the soundtrack and response of your F56 LCI Mini with a UK-built 3-inch stainless catback
Give your Mk3 Mini hatch the voice and flow it deserves. This UK-engineered 3 inch stainless steel catback for the F56 LCI Cooper S and John Cooper Works is designed for enthusiasts who want sharper throttle response, a deeper tone and premium build quality. Crafted from T304 stainless with smooth mandrel bends and immaculate TIG welds, it delivers freer breathing, a richer note and long-term durability in all weather conditions.
Why this 3 inch F56 LCI system stands out
Full 76.2 mm diameter from the catalyst section rearward, replacing the centre pipe and back box for improved gas flow
Choice of sound levels:
Resonated - refined daily manners with a purposeful sporty tone
Non-resonated - louder, more aggressive and raw for maximum character
Measured excitement: with the non-resonated setup in Sport mode, track test recorded 86.4 dB at 4,000 rpm
Tailpipe options: 3.5 inch outlets with ceramic coated black or carbon fibre tips for a premium finish in the bumper
Built in Sheffield, UK from high grade T304 stainless steel using precision TIG welding
Larger bore than many alternatives for future tuning headroom and reduced back pressure
Supplied ready to install with all required clamps, hangers and gaskets
Turbo-back ready when combined with a compatible sports cat or decat downpipe for maximum flow potential
What you will notice
Deeper, more involving tone on the B48 turbo engine with enhanced pops and crackles in Sport mode
Smoother delivery thanks to freer-flowing 3 inch pipework
Head-turning tailpipe options that look as good as they sound
We have installed and run this setup on customer cars and it never fails to impress. Owners consistently praise the quality, fit and the addictive soundtrack, whether they choose the civilised resonated system or the more vocal non-resonated option.
Fitment
Designed for the F56 LCI facelift Mini Cooper S and John Cooper Works. Fits from after the catalytic converter to the rear, replacing the mid section and rear silencer.
Professional installation
Want it fitted properly the first time? Book installation with MJ Modifications in Warwickshire. Email info@mjmodifications.co.uk for a tailored quote and availability.
Media
Hear it in action:
Behind the scenes and drive-by clips:
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