Unlock the full performance potential of your BMW G8X M3, M4 or M2 (G87) with the Milltek Sport Large Bore Downpipe and De-cat. Fabricated with a significantly larger bore than the OEM downpipe, this upgrade dramatically improves exhaust gas evacuation from the S58 engine, reducing back pressure and increasing efficiency.
Paired with the catalyst bypass pipe, this system removes any restriction to exhaust flow for maximum performance gain. The result is improved throttle response, enhanced mid-range torque, and a dramatic increase in exhaust sound — particularly noticeable when combined with a Milltek Sport cat-back or axle-back system.
Available in two bore sizes (102mm and 3"), this downpipe is a race product designed for track use and should be paired with an appropriate ECU remap. Manufactured from 304L aircraft-grade stainless steel and made in the UK.
