Stainless-steel valved exhaust system, 89 mm. Welding process: TIG.
F20 (5-door) available for delivery; F21 (3-door) requires modification and installation at HG Motorsport.
The 135i requires retaining and cutting the approximately 50 cm OEM section containing the oval flexible pipe.
On OPF models, cut behind the OPF and fit the system using the adapter pipe and clamp.
ECE approval requires the matching Bull-X Tronic ECE controller and an approved vehicle. Versions without ECE approval are for motorsport.
| Version | Vehicle / technical fitment |
|---|---|
| F20/F21 135i | Vehicle Type Engine type kW; BMW M135i, M140i 1K4, 1K2, 1C B58B30A Petrol 250; N55B30A 240/235 |
| F20/F21 140i | Vehicle Type Engine type kW; BMW M135i, M140i 1K4, 1K2, 1C B58B30A Petrol 250; N55B30A 240/235 |
| F20/21 140i with OPF | Vehicle Type Engine type kW; BMW M135i, M140i 1K4, 1K2, 1C B58B30A Petrol 250; N55B30A 240/235 |