Mk3 Focus RS Cat Back Exhaust V3 - Fully Fitted at mountune HQ


This part does not affect the base vehicle warranty.

The mountune V3 cat back exhaust for the Mk3 Focus RS is the result of countless hours of engineering and ongoing product development, offering a product that is simply unrivalled in terms of performance, sound and features.

Extensive effort was placed on producing a sound profile that replicated the personality of the RS with an aggressive note under full throttle, while maintaining a drone free experience during cruising and light throttle.

Produced from 304 series, 3” mandrel bent stainless steel tubing, the mountune V3 Exhaust also includes many features used in motorsport applications; each tube joint is connected by either V-Band or custom double slip-joint, ensuring the best seal possible while maintaining adjustability and lightness.

Full drive mode functionality is also maintained with the inclusion of an OE valve and motor assembly, requiring nothing to be switched over from the standard exhaust.

Large 4.5” laser-etched polished tips join the rest of the system via V-Band to allow even easier trim adjustment and future system customisation. 


  • 3" Stainless Steel tubing
  • 4.5" laser-etched polished trims
  • Includes new valve and motor assembly 
  • V-Band / double-slip joints throughout
  • High-flow rear silencer design
  • 10% lighter than OE system
  • Supplied with all required clamps / hardware
  • Compatible with OE downpipe / catalyst and mountune Downpipe / Sports Catalyst.

Please note: the price shown for this product includes installation at mountune HQ in Hutton, Essex and is not transferrable to any other Ford dealer or installer. 

Please specify your preferred installation date in the 'notes' section when checking-out; our workshop team will then contact you back to confirm this date. If we can't accommodate your preferred choice, the team will discuss with you other available dates, that are still acceptable to you.

Customer Reviews

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Kris Flemington

V3 Exhaust + FPM375 + SSC + 2yr service Fitted at Mountune

My experience with Mountune yesterday was, without doubt, the best customer service I've ever had from any car dealer, workshop or tuner. It was well worth my 2-hour drive. Customer waiting area is excellent even for 7 hours! Fellow enthusiasts to have a chin wag with, comfortable with lots of cool kit to drool over while Ryan and the team are knowledgeable and attentive. The FPM375 kit is excellent and in my view how the car should have been from the factory. The V3 Exhaust is excellent. Quiet on the M25 yet epic on full throttle. The whole car now feels more special, more of an event more of the time. And my warranty is still intact - what's not to like.

Stephen H.
United Kingdom


The exhaust does what I expected watched plenty of videos before deciding to go for the mountune catback and glad I did every one has there own preference mine is mountune and it sounds like gunfire and I love the noise of the exhaust even in normal mode so I am a happy customer and I will be back soon .

Stephen H. verified customer review of Mk3 Focus RS Cat Back Exhaust V3 - Fully Fitted at mountune HQ
liam Phythian

what a noise!

had they fitted today and i didnt think my smile could get any bigger but trust me it did. sounds amazing when you put the foot down and the pops are now bangs. also when you not flying around it sounds quite aswell which is good. big thanks to ryan and the team for fitting this for me and the service was really good.

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