This Scorpion F20/F21 M135i Cat-Back System runs from the downpipes-back to remove the secondary cats. This significantly optimises exhaust flow and is a great way to add to the visual and aural experience.
For a full turbo-back system combine with a Scorpion M135i Sport Cator De-Cat Downpipe. This system bolts directly to the OEM system and uses factory mounting locations. Optional black ceramic tailpipe finish gives a great stealthy look to the system.
- 76mm (3″) piping
- 9.7bhp gain with this system alone (no mapping)
- 13.1bhp gain when used with Sports Cat (no mapping)
- 13.8kg weight saving with this system
- 15.5kg weight saving when used with Sports Cat
- Dual 90mm Daytona tailpipes
- Rear silencer
- Rear pipe
- Centre pipe
- Front link pipe
- Fitting kit