This Focus ST Mk4 performance exhaust is made in 3"/76.2mm bore pipework and fits from the turbo to the centre section. The sports cat exhaust option will enable you to pass a UK MOT emissions test or police road side checks. The de-cat sports exhaust is sold for motorsport and off road use only and will NOT be able to pass a UK MOT emissions test or police road side checks. All relevant fittings and gaskets are supplied for fitment. Fitment will require basic engine tuning at time of fitment to cancel the EML light. De-Cat Fitment is for motorsport and off road use only.
THE DECAT PART IS NOT ROAD LEGAL AND SHOULD BE USED ON TRACK ONLY