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

Mini F56 LCI Cooper S Mk3 High-Flow Catalyst and Catless Downpipe Upgrade

Unlock sharper throttle response, stronger midrange pull and a richer soundtrack on your BMW Mini hatch with this Cobra Sport turbo down pipe upgrade. Available as a 200 cell high-flow catalyst or a straight-through catless pipe, this front section replaces the primary factory converter from the turbo outlet and joins directly to the front of either the OE system or a Cobra Sport cat back. It is a proven, UK-built performance upgrade that transforms driveability and sound.

Crafted in large-bore 3 inch, 76.2 mm pipework with a substantial 4.5 inch, 114.3 mm 200 cell metallic core option, this freer-flowing design reduces backpressure, improves gas velocity and lays the groundwork for reliable tuning. Designed, manufactured and TIG-welded in Sheffield, it carries Cobra Sport’s quality assurance for long-term confidence.

Why enthusiasts choose this Mini F56 LCI down pipe

• Big gains potential: during testing with the high-flow catalyst and a resonated cat back, plus a conservative Stage 1 calibration and no extra hardware, power rose from 215 hp to 291 hp and torque from 338 Nm to 413 Nm. 300+ hp is comfortably achievable.
• Deeper tone and character: crisper exhaust note with a more pronounced overrun, enhancing the hot hatch feel without drone when paired with the right cat back.
• Proper fit and finish: precision TIG-welded construction, engineered in the UK for consistent fitment on Mini F56 LCI models.
• Modular system: mates to the stock Mini Cooper S or JCW front section, or combine with a Cobra Sport cat back to create a full turbo back setup.
• PPF and non-PPF compatible versions available.

Fitment details

• Mini Mk3 F56 LCI Cooper S facelift models.
• Also fits JCW when paired with the corresponding front section.
• Connects from the turbocharger outlet to the front of the standard system or to the Cobra Sport cat back. Choose the required configuration when ordering.

What you get

• 3 inch, 76.2 mm large-bore down pipe assembly.
• Option 1: 200 cell sports catalyst with 4.5 inch, 114.3 mm core.
• Option 2: catless section for track and off-road use.
• All relevant fixings and gaskets supplied, excluding the turbo gasket.

Legal and emissions notice

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

Sports catalyst: replaces a factory emissions device and is not EC homologated. It may not meet current emissions regulations for on-road use in your area. Always check local laws before purchasing.

Our experience

We run these on customer cars and the feedback is consistently positive. Faster spool, stronger torque, and an addictive sound make this one of the most effective Mini F56 LCI upgrades for real-world pace and enjoyment.

Professional installation

We recommend expert fitting. Book in with MJ Modifications in Warwickshire for installation and setup. Request a quote at info@mjmodifications.co.uk.

Search-friendly terms

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