The mountune Downpipe / Sports Cat has been engineered for the mk3 Focus ST to reduce exhaust back-pressure at the turbocharger, allowing faster response and additional power.

Features include a large diameter 5” motorsport-type, 200 cell count metal substrate honeycomb catalyst, to ensure effective, ultra high flow performance in extreme environments. Constructed of 3” AISI 304 stainless steel mandrel-bent tubing with a CNC machined V-band flange that allows easy installation.

Additionally, robust OE-type mounting brackets and hangers are utilized 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.

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

Features:

• Large diameter motorsport-type, high flow 200 cell catalyst
• 3” AISI 304 mandrel bent stainless steel tube
• Robust OE-type mounting bracket and hangers
• 8” stainless steel flex joint
• Compatible with 2.5” and 3” exhaust systems
• TIG welded construction
• Limited 2 year warranty*

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

*Please contact us for warranty terms and conditions.

WARNING:
Whilst this product will pass current UK MOT tailpipe emissions regulations, it utilises a high-quality motorsport catalyst, which is therefore designated for off-road use only in the UK. 
If outside the UK, please check your local territories laws and regulations relating to emission requirements and motor vehicle safety standards prior to purchasing.