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Ford Focus ST (Mk4) Turbo Back Performance Exhaust

Ford Focus ST (Mk4) Turbo Back Performance Exhaust

Imperial Performance

£1754.8

Requires mandatory ECU reflash. Cobra Sport performance exhausts enhance the sound, looks and quality of your vehicle giving you the ultimate driving experience. Our sports exhausts range is fully guaranteed to give you assurance of our quality. This Ford Focus Mk4 ST turbo back performance exhaust is made in 3"/76.2mm pipework and fits from the Turbo backwards (turbo-back) replacing the Downpipe, GPF, centre and rear sections. The high flow sports cat version will enable you to pass a UK MOT emissions test or police road side checks. This exhaust is also sold with a de-cat for motorsport and

Imperial Performance's own words, read from their page.

Buy from IMPERIAL PERFORMANCE LIMITEDIMPERIAL PERFORMANCE LIMITED is a UK retailer, not the maker. Price seen 2026-09-21. Not an affiliate link, we earn nothing from it.

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The part other shops don't tell you. Three separate questions, kept separate on purpose, each with its source.