The mountune Sport GPF for the Mk4 Focus ST has been developed as an effective way to reduce exhaust back-pressure at the turbocharger, improving turbo response and releasing additional power and torque.
Incorporating a larger diameter 3” bore entry and exit with a high-flow GPF housed at its core, you can benefit from a substantial reduction in back-pressure and in-turn enhanced power and torque output across the entire rev-range, whilst still maintaining conformity to UK emissions requirements*.
The mountune Sport GPF is also supplied with an adaptor pipe which allow easy installation with the mountune GPF-back exhaust system.
Please Note: Revised engine calibration will be required for optimal performance.
Features:
- 10PS / 10Nm peak power / torque increase
- High-flow GPF core
- 3” 304 stainless steel tube
- Compatible with mountune GPF-back exhaust system.
Recommended to installed in conjunction with mountune Mk4 Focus ST GPF Back Exhaust and mountune Downpipe / Sports Cat.
WARNING:
This product has been designed and is intended for UK markets and complies with UK MOT tailpipe emissions regulations. Installation of this part on a vehicle that is driven on public roads outside the UK may violate other territories laws and regulations relating to emission requirements and motor vehicle safety standards.
*based on the current UK MOT emission testing requirements.

HQ fitting time: 1 hr
Please note: the price shown for this product includes installation at mountune HQ only, and is not transferrable to any other dealer or installer.
Please specify your preferred installation date in the 'notes' section when checking-out; our workshop team will then contact you to confirm this date. If we can't accommodate your preferred choice, the team will discuss other available dates.