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Cat Back Exhaust [Mk7 Fiesta 1.0 EcoBoost]

Diffuser option: less Diffuser

The mountune Mk7 Fiesta 1.0 Cat Back Exhaust reduces back-pressure and improves performance, whilst keeping cabin intrusion / boom to a minimum.

A Helmholtz chamber design is utilised in the rear silencer which helps to cancel out unwanted frequencies due to the way in which the exhaust gas waves are reflected. Utilising this system, despite being more complicated and expensive to manufacturer, ensures back-pressure remains low, providing the optimum in terms of performance, whilst removing as many of the unwanted frequencies / cabin boom as possible.

The staggered tail-pipe trim adds to the occasion and both trims feature laser-etched mountune 'racing flag' logos.


  • High-flow cat-back exhaust design improves performance
  • Engineered Helmholtz resonator for a less intrusive, performance sound
  • High quality stainless construction with CNC welds
  • Staggered, twin-tailpipe trims with laser-etched mountune racing flag logos
  • Limited lifetime warranty

Note: If this item is fitted with the mountune Exhaust Isolator, we recommend using two isolators on the silencer only.

PLEASE NOTE: Due to the outlet position of the tailpipe trims, an aftermarket ST-style, or genuine Ford Fiesta ST lower diffuser section is required to ensure correct visual appearance.


Customer Reviews
5.0 Based on 7 Reviews
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Filter Reviews:
    Rob P.
    United Kingdom United Kingdom

    Blown away!

    The overall look and sound of this exhaust is pure class! It looks perfect on the car and sounds incredible I would 110% recommend this to anyone just remember if you have a zetec-s or st line you will need to get a rear diffuser for it to sit right!

    mountune Cat Back Exhaust [Mk7 Fiesta 1.0 EcoBoost] Reviewmountune Cat Back Exhaust [Mk7 Fiesta 1.0 EcoBoost] Review
    Duarte G.
    Portugal Portugal

    Excelent Quality!

    Good product. It is as advertised.

    United Kingdom United Kingdom

    Great Exhaust

    I purchased the exhaust through Hendy Performance but wanted to add my review here. I wanted an exhaust that made my 1.0 fiesta sound better but not obnoxiously loud. This exhaust is perfect, loud enough to make me smile every time I put my foot down but loud enough create an angry mob out of my neighbours. It doesn’t drone on the motorway either. I DIY fitted it with a TRC rear diffuser which looks great with it. I’m no expert on quality but it seems really well made to me, nice shiny exhaust tips, easy to polish up too.

    mountune Cat Back Exhaust [Mk7 Fiesta 1.0 EcoBoost] Review