The mountune GPF-back exhaust for the Mk8 Fiesta ST gives the 3-cylinder EcoBoost a much more befitting soundtrack, reduces back-pressure and enhances vehicle aesthetics.

Constructed from 60mm 304 stainless steel, the mountune GPF-back system improves vehicle performance thanks to the low-back pressure design, whilst the carefully engineered muffler features a Helmholtz resonator which ensures the cabin remains free from unwanted drone or boom.

The mountune GPF-back also comes supplied complete with a new exhaust valve assembly, so you can easily swap your actuator across to retain full valve control.

Available with either a polished stainless or carbon fibre trim option to suit your individual preference.

This exhaust system also includes an S-bend section and adaptor - not shown.

PLEASE NOTE: Vehicles built after September 2020 use revised emission hardware to suit EU6.2 regulations. We believe these changes make our current GPF-back valved exhaust non compatible. Support for this latest level will be made available soon. If you are unsure please email us with your VIN and we will check compatibility for you.