MINI Cooper JCW GP3 (Mk3) F56 3"/76mm Valved Cat-Back Exhaust by Cobra Sport - Active Switchable T304 Stainless Performance Catback, Remote Controlled, Resonated or Non-Resonated, 3.5"/4" Black or Carbon Tips

Switchable catback upgrade for MINI GP3 Mk3 JCW F56

Transform your F56 GP3 John Cooper Works with this valve-controlled catback from Cobra Sport. This switchable system delivers a deep, motorsport-inspired soundtrack when you want excitement, and a calmer tone for everyday driving when you need it. It is the ultimate bolt-on stainless steel exhaust upgrade for MINI GP owners who want premium sound, stunning tips and proven performance gains.

Why MINI GP drivers choose this system

• Valve-operated sound control via included key fobs, choose quiet or loud at the touch of a button
• Large bore 76.2 mm pipework for superior flow compared to many 2.75 inch alternatives
• Available as resonated for refined tone or non resonated for maximum volume
• Choice of 3.5 inch or 4 inch tailpipes, with optional ceramic coated black or carbon fibre tips
• Manufactured in the UK from T304 stainless steel, TIG welded and mandrel bent
• Supplied with all required fittings and gaskets for a hassle free install

Sound you can control

Open the valve for a richer, more aggressive note with enhanced pops and crackles. Close it for a more subtle soundtrack during cruising or early morning starts. Independent sound testing at 4,000 rpm recorded up to 92.4 dB with the valve open and approximately 88.1 dB with the valve closed.

Built for power, made to last

Crafted from high grade T304 stainless steel with precision TIG welds and smooth mandrel bends, this catback is designed to reduce back pressure and improve gas flow. Cobra Sport’s engineering and UK manufacturing pedigree help unlock real world improvements, with proven gains in power and torque, sharper response and a far more engaging drive.

Fitment and options

• Configuration, fits from the catalyst back replacing the centre section and rear muffler
• Tip options, 3.5 inch or 4 inch, ceramic black or carbon fibre finish
• Pair with Cobra Sport high flow sports cat or de cat front pipe to create a full turbo back upgrade, track use only

PPF and emissions note

Vehicles equipped with a petrol particulate filter may require basic engine calibration at the time of installation to prevent the EML being triggered. For motorsport and off road use only where applicable.

Installation

We recommend professional fitting for the best results. Book your install with MJ Modifications in Warwickshire. Email info@mjmodifications.co.uk for a tailored quote and availability.

What our customers say

We have fitted this system for MINI GP owners who wanted more character without constant drone. Feedback has been consistently positive, with praise for the quality, the switchable volume and the premium tailpipe finishes.

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