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.
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. Please make your selection from the drop down menu below.
If this item is fitted with the mountune Exhaust Isolator, we recommend using two isolators on the silencer only.
Please allow 1 week for delivery.
*Please contact us for warranty terms and conditions.
Great quality exhaust, advertised cat back but it isn't still uses original pipe from cat and middle box had to get the rest made now it great so beware of what you are buying I didn't realise until fitted happy no though
Firstly, I was very happy with delivery time after receiving my order in less than 48 hours after it was placed. I Fitted the exhaust with the standard CAT and it sounds great; cabin noise is to a minimum yet creating a great sound under acceleration and minimal to no sound when cruising/on the motorway. Definitely recommend this exhaust to anyone who wants a bit more sound out of their car but want a quiet cabin. The exhaust itself is very good quality, impressive how neat all of the welds are and the overall finish of the product is great! Another great service from everyone at Mountune. Thanks!