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Downpipe / Sports Cat with V-band fitting [Mk3 Focus RS]

The mountune V-band Downpipe / Sports Cat has been engineered to reduce exhaust back-pressure for mk3 Focus RS fitted with larger frame turbochargers that require a v-band for installation.

Crafted from 304 grade Stainless steel and TIG welded throughout, the mountune sports cat v-band downpipe features a large diameter 5” motorsport-type, 200-cell count metal substrate honeycomb catalyst and ensures effective, ultra high-flow performance in extreme environments.

Additionally, robust OE-type mounting brackets and hangers are utilised to maintain perfect alignment and OE-like fitment. Also incorporated is an 8” stainless steel flex section to help absorb shock and prevent OE hanger failure and an additional HEGO boss is included for those wishing to run an external wide-band lambda gauge, or that require a mounting point to monitor EGT.

Supplied with an adaptor sleeve to make it fully compatible with the mountune cat-back exhaust and any third-party option that retains the OE break point.

Revised engine calibration will be required for optimal performance and may emit the EML without it.


  • Large diameter motorsport-type, high flow 200 cell catalyst
  • 3” AISI 304 mandrel bent stainless steel tube
  • TIG welded throughout
  • Additional HEGO boss for monitoring lambda / EGT
  • Robust OE-type mounting bracket and hangers
  • 8” stainless steel flex joint
  • Compatible with mountune cat-back exhaust / third-party exhausts retaining the OE break point

Recommended to fit in conjunction with mk3 Focus RS Cat Back Exhaust.

This product has been designed and is intended for UK markets and complies with UK MOT tailpipe emissions regulations. Installation of this part on a vehicle that is driven on public roads outside the UK may violate other territories' laws and regulations relating to emission requirements and motor vehicle safety standards.

Not compatible with OE turbocharger, this downpipe is for larger frame turbochargers that require a v-band flange only.