
SLN S55 Ceramic-Coated Sports Cat Downpipes – BMW F87 M2C/CS, F80 M3 & F82/F83 M4
SLN S55 Ceramic-Coated Sports Cat Downpipes – BMW F87 M2C/CS, F80 M3 & F82/F83 M4 replaces the restrictive factory catalyst section with a higher-flow sports-catalyst arrangement. It is intended to improve exhaust flow and turbo response while retaining a catalytic element and a more controlled exhaust note than a fully catless setup.
Key features
- Euro 5 200 CEL sports catalysts
- Ceramic coating to reduce radiated heat
- Designed to reduce the rasp associated with fully catless S55 downpipes
- TIG-welded with OEM-spec 304 stainless-steel flanges
BMW fitment
F87 M2C/CS, F80 M3 & F82/F83 M4.
Road-use / emissions note
A high-flow sports catalyst is not automatically EC type-approved for road use. Suitability and MOT/emissions compliance depend on the exact component and vehicle configuration. Please confirm the approval status before ordering for a road car.
Supply and fitting
Available from Swift Performance with fitment advice before ordering. Workshop fitting can be discussed where the component and vehicle remain suitable for road use.

