
For maximum sound without touching the factory catalyst or GPF, this Cobra Sport race box delete system replaces the centre and rear sections of the F40 M135i with 3" (76.2mm) stainless steel pipework. It converts the car to an M3-style quad exit with 4" (101.6mm) carbon fibre tailpipes.
Please note: An M3-style quad exit rear valance panel is required and is not included. This system has no rear silencer and is very loud. Non-valved versions remove the exhaust valves, so the sound will no longer change with drive modes. This will not harm the running of the car.
Features
- 3" (76.2mm) stainless steel pipework replacing the centre and rear sections
- Race box delete - no rear silencer
- Keeps the factory catalyst and GPF
- Tested at 72.7dB at idle (+18.4dB) and 92.8dB at 4,000rpm (+12.9dB)
- Quad 4" (101.6mm) carbon fibre tailpipes
- All relevant fittings and gaskets are supplied.
Fitment
- BMW F40 M135i xDrive (2019+)