CTS Turbo Crossover Exhaust Pipe for G80/G82 BMW M3/M3C/M4/M4C S58 engine

CTS Turbo's crossover pipe for the BMW S58 G80/G82 M3, M3 Competition, M4, and M4 Competition targets a real restriction in the factory exhaust: the mid-pipe design.

The G80/G82 M3 and M4 use a Y-style mid-pipe with both downpipes on the right side of the engine. The left downpipe feeds a crossover pipe that runs under the transmission to link up with the mid-pipes on the left. To clear the transmission, the factory crossover is oval — and that round-to-oval transition creates turbulence and restricts exhaust flow. Our replacement keeps the pipe round, eliminating the turbulence and restriction, which we expect to meaningfully increase horsepower and torque.

Features

• Durable 304 food-grade stainless steel, 3" (76mm) diameter
• Laser-cut flanges
• Designed using the latest 3D scanning technology
• LHD/RHD fitment
• Exhaust flow simulated with CAD software for optimal routing

Fitment

• 2021+ BMW S58 M3 / M3 Competition
• 2021+ BMW S58 M4 / M4 Competition

Not compatible with aftermarket single mid-pipes.

Emissions disclaimer: This product is intended for off-road, race, or closed-course competition use only and is not legal for use on pollution-controlled vehicles operated on public roads in most states and provinces. You are responsible for compliance with all applicable emissions laws. Please check your local laws before purchase and installation.

Ships from our Vancouver shop — KORE SPEED is proudly Canadian-owned, with no surprise cross-border duties for Canadian buyers. Questions on fitment? Email support@korespeed.com.