Mini (Mk3) Clubman Cooper S (F54) Sports Cat / De-Cat Downpipe Performance Exhaust

Unlock sharper throttle response and a richer, sportier tone from your Mini Clubman Mk3 F54 Cooper S with this Cobra Sport turbo outlet upgrade. Built in 76.2 mm (3 inch) pipework and offered with either a high-flow 200 cpsi catalyst or a straight-through race pipe, this is the proven way to free up exhaust flow from the turbo to the factory front section.

Why this upgrade

• 3 inch/76.2 mm tubing for reduced backpressure and improved turbo efficiency
• Choice of 200 cell high-flow catted section or catless track-only option
• Direct replacement from the turbocharger to the OE front pipe
• Deeper, more engaging sound without the tinny rasp of the stock setup
• Ideal foundation for remaps and other tuning hardware

Fitment and compatibility

Designed for Mini Clubman Mk3 F54 Cooper S models. This assembly replaces the factory catalytic converter section and connects from the turbo housing to the front pipe of the standard system.

Specifications

• Pipe diameter: 76.2 mm (3 inch)
• Catted option: 4.5 inch (114.3 mm) 200 cell sports catalyst
• Catless option: straight-through race section for closed-course use

What’s included

• Downpipe assembly in your chosen configuration (200 cpsi catted or catless)
• All relevant fittings and gaskets to complete installation
• Note: turbo gasket is not included

Installation and support

We’ve fitted plenty of these in our workshop and customer feedback has been consistently positive for both sound and driving feel. For professional fitting, contact MJ Modifications in Warwickshire for a quote: info@mjmodifications.co.uk.

Legal and usage notice

• Catless version: sold for motorsport and off-road use only.
• 200 cell catted version: replaces a factory emissions device and is not EC homologated. It may not meet current road-going emission regulations in your region.

Search-friendly terms

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Media

Exhaust Talk: Sports Catalyst vs De-Cat