Airtec Motorsport De-Cat Downpipe for Ford Focus ST250
Removing the restrictive factory catalytic converter from the OEM downpipe cuts back pressure significantly, letting the engine expel gases more quickly — for sharper throttle response, more power and a more aggressive exhaust note.
Unlike the older ST225 and Ford Focus RS Mk2, the ST250's original catalyst and downpipe are one piece, with restrictive bends and just a 70mm exit bore. Airtec's replacement downpipe matches that 70mm bore for over 50% more capacity than the factory design.
Please Note
- Sold for motorsport and off-road use only, and will not pass a UK MOT or roadside police check
Compatible With