Upgrade the soundtrack and style of your R58 with a quality UK‑built system
Unlock a deeper, sportier note and sharpen the look of your R58 Mini Coupé with this premium stainless cat‑back system for the Mk2 Cooper S and John Cooper Works. Hand‑assembled in the UK from T304 stainless with precision CNC mandrel bends and expert TIG welds, it delivers a refined tone on the motorway yet a purposeful growl when you want it. We have fitted these for customers and on our own builds, and the feedback has been superb for sound quality, fit and finish.
Why enthusiasts choose this upgrade
63.5 mm bore pipework from the catalyst backwards, replacing the centre and rear sections for improved flow and responsiveness.
Choice of sound:
Resonated option includes a centre silencer for a subtle, daily‑friendly tone.
Non‑resonated option removes the centre silencer for a louder, more aggressive note.
Twin 3.5 inch polished tailpipes, with round or inverted draga style options that sit perfectly in the Coupé valance.
Noticeable performance uplift thanks to freer‑flowing silencers and smooth mandrel bends.
Approximately 22 percent weight saving over the factory system for a livelier feel.
Engineered sound control with only around a 2 dB increase at idle compared to OE, ideal for long‑distance cruising.
All fittings and gaskets supplied for a straightforward installation.
Lifetime warranty on the stainless system for total peace of mind.
Designed specifically for the turbocharged 1.6 petrol in the R58 Coupé, this cat‑back upgrade enhances the car’s character without the drone you might expect from lesser aftermarket systems. The result is a crisp, motorsport‑inspired tone under load and a civilised manner at steady speeds.
Fitment compatibility
Fits Mini Mk2 Coupé R58 variants:
• Cooper S
• JCW John Cooper Works
Tailpipe specifications
Twin 3.5 inch tips, 88.9 mm diameter. Polished finish with round or inverted draga style options.
What’s included
Cat‑back stainless system with centre and rear sections, appropriate gaskets and fixings.
Note: images show the resonated configuration when fitted.
Professional fitting
Want it installed by specialists who know Minis inside out? Book fitting with MJ Modifications in Warwickshire. Email info@mjmodifications.co.uk for a quote.
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