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6 reviews


GPF-back Exhaust [Mk4 Focus ST]

Trim Finish
The mountune GPF-back exhaust for the Mk4 Focus ST adds a noteworthy boost to audible performance, reduces back-pressure and enhances vehicle aesthetics.

Constructed from 304 stainless steel, the 3" bore system improves vehicle performance - particularly once power output has been raised, thanks to the low back-pressure design, whilst the carefully engineered internal muffler ensures this system remains free from intrusive cabin boom, whilst delivering an addictive soundtrack.

Also available with either a polished or carbon fibre trim option to suit your individual preference:

Available for both Hatchback and Wagon models.


For the first time in our Ford range, we're offering either a polished stainless, or matt carbon fibre 4" tailpipe option, so as well as a boost in performance and sound, you can also tailor the aesthetic enhancement too.

Customer Reviews
5.0 Based on 6 Reviews
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Filter Reviews:
    Jonathan K.
    Belgium Belgium
    another top product!

    Very pleased with the sound! sounds much better and deeper on idle and comfortable on motorway! pops are much louder which is great!

    mountune GPF-back Exhaust [Mk4 Focus ST] Reviewmountune GPF-back Exhaust [Mk4 Focus ST] Review
    United Kingdom United Kingdom
    GPF-back Exhaust Mk4 Focus ST

    Order arrived within a few days of ordering and wasn't disappointed, looks great on the car. When driving normally there is a deeper tone and slight increase in volume over the standard exhaust. When you put the power down it sounds awesome, noise increases, pops more without being over the top and no drone from inside the car. Exactly the type of exhaust I was after highly recommend.

    mountune GPF-back Exhaust [Mk4 Focus ST] Reviewmountune GPF-back Exhaust [Mk4 Focus ST] Review
    stefan L.
    Sweden Sweden
    GPF-back exhaust

    Very happy with my new exhaust-system. Sounds great, Easy to mount

    mountune GPF-back Exhaust [Mk4 Focus ST] Review