Mini (Mk3) Cooper S (F56) Sports Cat / De-Cat Downpipe Performance Exhaust

Unlock serious performance and soundtrack from your Mini Mk3 F56 Cooper S with this turbo outlet upgrade. Choose a high-flow 200 cell catalyst or a catless race pipe to transform throttle response, reduce back pressure and unleash the true character of your MINI hot hatch.

Why enthusiasts pick this Mini F56 downpipe upgrade

Developed by Cobra Sport in the UK, this advanced turbo down pipe is engineered to maximise gas flow and heat management for both PPF and non‑PPF models. Our team at MJ Modifications has fitted these on customer cars and the feedback is outstanding. Sharper spool, stronger mid-range, deeper tone and that addictive overrun note. It is a proven foundation for tuning and an ideal partner for a remap.

Key features at a glance

• 3 inch (76.2 mm) pipework from the turbo outlet for exceptional flow
• 4.5 inch (114.3 mm) 200 cell high-flow sports catalyst option, or catless option for track use
• Installs from the turbo to the front pipe of either the stock system or Cobra cat-back
• Compatible with F56 Cooper S and JCW exhaust layouts, PPF and non‑PPF cars
• TIG-welded and UK built to Cobra Sport’s exacting standards
• All relevant fittings and gaskets supplied, except turbo gasket

Real-world performance potential

During development with a conservative Stage 1 calibration and a resonated cat-back, the high-flow catalyst setup delivered gains from 215 hp to 291 hp and torque from 338 Nm to 413 Nm, with 300+ hp easily achievable. The freer‑flowing design reduces restriction, improves turbo efficiency and enhances driver engagement.

Sound you can feel

Expect a richer, more aggressive tone with increased volume under load and a more pronounced overrun. The sports catalyst brings a refined motorsport character, while the catless race pipe delivers the loudest, most extreme soundtrack for circuit days.

Build quality you can trust

Designed, manufactured and tested in Sheffield, UK. Cobra Sport’s decades of expertise and precision TIG-welding ensure a premium finish, durability and consistent fitment.

Fitment and compatibility

• Fits from the turbo to the front pipe of the Cobra cat-back or the front pipe of the standard exhaust, replacing the factory catalytic converter
• Can be paired with a Cobra cat-back to create a full turbo-back setup

What’s included

All relevant fittings and gaskets are supplied, except the turbo gasket.

Legal and usage notes

Catless version: sold for motorsport and off-road use only worldwide.

Sports catalyst version: replaces a factory emissions device and is not EC homologated. This may not meet current emission laws for road use in your territory.

Professional installation

For fitting, we recommend our workshop at MJ Modifications in Warwickshire. Request a quote: info@mjmodifications.co.uk.

Why buy from us

We run these upgrades on our own builds and our customers consistently praise the boost in response, the cleaner power delivery and the addictive sound. If you want a Mini F56 exhaust upgrade that really moves the needle, this is the one.

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