
This resonated secondary catalyst bypass for the BMW G80/G81 M3 and G82 M4 replaces the factory secondary catalysts with straight-through stainless tubing for improved exhaust flow and a fuller, more refined exhaust note.
Please note: This is a race product intended for off-road/motorsport use only, is not E-marked for road use, and may require an ECU remap to run correctly without fault codes. Fits to OE downpipes and the original equipment axle-back system only.
Features
- Removes the secondary catalysts
- Resonated design
- 76.2mm (3") pipe diameter
- Approximately 2 to 3 hours to fit (including removal of the OE system)
- Race product – not E-marked
Fitment
- BMW M3 Saloon (G80)
- BMW M3 Touring (G81)
- BMW M4 Coupé (G82)