The MAD 5" Single Midpipe is the first true single midpipe ever developed for the BMW G90/G99 M5, engineered to dramatically transform the sound and character of the S68-powered platform. The factory exhaust leaves significant performance and tone potential unused, but this midpipe unlocks the deep, aggressive, and refined sound an M car should naturally deliver.

By converting the midsection into a full 5-inch single pipe, exhaust pulses merge smoothly into one oversized high-flow path. This results in a powerful, full-bodied tone with zero rasp, zero drone, and an exceptionally clean note throughout the entire RPM range. The sound becomes deeper, richer, and more pronounced — all without sacrificing refinement.

MAD utilized every inch of available space beneath the chassis to build the largest midpipe the platform can physically support. The result is an exhaust tone that is fuller and more controlled while still delivering the signature aggression expected from an M5. Whether used with the OEM axle-back or the MAD axle-back, this midpipe brings the entire exhaust system to life.

Key Features

• First-ever 5-inch single midpipe for the BMW G90/G99 M5

• Produces a deep, aggressive, and full-bodied exhaust tone

• True single-pipe design for the cleanest possible sound

• Zero rasp and zero drone across the entire RPM range

• Large 5-inch diameter maximizes flow and exhaust pulse merging

• Smooth and refined exhaust character with proper M-level aggression

• Compatible with both OEM axle-back and MAD axle-back systems

• Direct fit to MAD axle-back with no tuning required

• Note: Cutting is required when connecting to the OEM axle-back

FITMENT 

BMW G90 M5
BMW G99 M5 Touring

This MAD 5" Single Midpipe unlocks the deep, refined aggression the G90/G99 M5 was meant to have, delivering maximum sound quality and flow with a true performance-driven design.