SLN B58 OPF Ceramic-Coated Decat Downpipe – BMW M240i, M340i, M440i & 540i
SLN B58 OPF Ceramic-Coated Decat Downpipe – BMW M240i, M340i, M440i & 540i is a high-flow exhaust upgrade for the listed BMW applications. Replacing the restrictive factory section reduces exhaust back pressure, supporting faster turbo response and increased flow on suitably prepared cars.
Key features
- Ceramic-coated catless downpipe for later/OPF-style B58 exhaust interface
- Stainless-steel construction
- High-flow design to reduce catalyst restriction
- Physical flange/interface must be confirmed before ordering
BMW fitment
M240i, M340i, M440i & 540i.
Fitment check: BMW used different flange and connection arrangements across model years and engine revisions. Please confirm the engine, chassis and physical interface before ordering if there is any uncertainty.
Motorsport / off-road use only: This product removes or bypasses emissions-control equipment and is intended for motorsport or off-road use only.