Cobra Sport Ford Focus ST225 Mk2 2.5T Cat Back/Catback Performance Exhaust System 3in (76mm) Stainless | Resonated & Non-Resonated | Sports Backbox Rear Section | Centre Silencer Delete | 2005-2010

Unlock the soundtrack your Mk2 ST225 deserves with this premium cat-back system. Built with 3 inch 76.2 mm pipework and designed to replace the centre and rear sections from the catalyst backwards, this upgrade delivers a sharper, sportier tone and a quality finish that transforms your drive. Cobra Sport’s guarantee-backed craftsmanship means dependable performance, great fitment and a sound that makes every journey feel special.

Why enthusiasts choose this upgrade

• 3 inch 76.2 mm tubing for improved flow and response
• Replaces centre and rear sections for a true cat-back transformation
• Choice of sound levels to suit your build and usage
• Supplied with the relevant fittings and gaskets for installation
• Cobra Sport quality and full guarantee for peace of mind

Choose your sound

• Resonated: includes the centre silencer for a refined, subtle sporting note. Ideal for daily driving with a deeper tone under load.
• Non-resonated: excludes the centre silencer for a louder, more aggressive exhaust note. A popular option for those who want maximum character.

This cat-back kit is a direct replacement for the original centre section and rear box, delivering an addictive tone and a cleaner rear-end look. We have installed these systems on customer cars and the feedback has been consistently excellent, praising the sound quality, fit and finish, and drivability.

Perfect for your performance build

If you are searching for ST225 Mk2 exhaust upgrade, Focus 2.5T sports system, rear section kit, catback exhaust, performance backbox, louder Focus exhaust, or centre silencer delete options, this setup ticks every box. It enhances soundtrack and driving feel while retaining everyday usability, making it a smart first modification or a finishing touch to a tuned road car.

Professional fitting available

Want it fitted by specialists who know these cars inside out? Book installation with MJ Modifications in Warwickshire. Request a fitting quote at info@mjmodifications.co.uk.

Hear it in action

Real-world sound clips of this cat-back system on the Mk2 ST225 in different configurations:

Example of Focus ST sports exhaust cat back non-resonated, de-cat and front pipe.

Example of Focus ST sports exhaust cat back non-resonated.

Example of Focus ST sports exhaust cat back non-resonated.

Example of Focus ST sports exhaust cat back resonated and de-cat.

Example of Focus ST sports exhaust cat back non-resonated and de-cat.

Cobra Sport Exhausts Ford promotional video.

Time Attack Focus with full 3 inch turbo back system front pipe, de-cat and cat back resonated.

Key search terms customers use

ST225 Mk2 exhaust upgrade, Focus 2.5T catback, rear section exhaust kit, sports backbox for Focus, louder Focus ST exhaust, performance exhaust for Mk2 ST, centre silencer delete Focus, cat back system for ST225, Focus hatchback exhaust upgrade.