SLN B58 Super 5" Ceramic-Coated Decat Downpipe – BMW M140i, M240i, 340i, 440i & 540i
SLN B58 Super 5" Ceramic-Coated Decat Downpipe – BMW M140i, M240i, 340i, 440i & 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
- Super 5-inch high-flow catless design tapering to the exhaust connection
- Ceramic-coated stainless-steel construction
- Designed for maximum flow and a more aggressive exhaust note
- Gen-1 B58 fitment/interface must be confirmed
BMW fitment
M140i, M240i, 340i, 440i & 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.