EU customers, please read before purchasing

Important Info

Search our store

12 reviews


GPF-back Exhaust [Mk8 Fiesta ST]

Trim Finish

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 system also includes an adaptor to join it to the OE exhaust - not shown.

PLEASE NOTE: Vehicles built after September 2020 use a revised exhaust / exhaust valve assembly which makes 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.


From the GPF all the way to your choice of polished stainless, or carbon fibre trims, the mountune exhaust system delivers when it comes to quality and detail; from the beautiful TIG welds and engineered features on the outside, to the drone-reducing Helmholtz resonator on the inside, we've got you covered.

Customer Reviews
4.9 Based on 12 Reviews
Write a Review Ask a Question

Thank you for submitting a review!

Your input is very much appreciated. Share it with your friends so they can enjoy it too!

Filter Reviews:
    United Kingdom United Kingdom
    Looks good and sounds good

    Fit is perfect, sounds biblical. Highly recommend to anyone considering and aftermarket exhaust

    Norway Norway

    Easy to install even with a couple of cuts to original exhaust, Great quality as usual and the sound is great, the original was actually quite good sound but this just makes it sound so much better and like a ST should, Once the M260 Asmo map is on the enhanced burbles are awsome without sounding false, The carbon tips look great to and better for me as I hate cleaning polished tips. Highly recommended

    Matt W.
    United Kingdom United Kingdom
    Love the carbon tips

    Lovely exhaust which really suits the car. Pops and bangs sound so much better and the quality of the exhaust is excellent. Highly recommended.