AKRAPOVIC DP-BM/SS/9 Downpipe w/o Cat (SS) for BMW M2 (G87) / M3 (G80/G81) / M4 (G82/G83) 2021-2024 ymm_45 Some of our competitors require

Some of our competitors require that you frequently perform a free-air calibration procedure to calibrate their O2 sensors

Low restriction aluminum tubing

Fitting information for GT/GT Roadster models: the Evolution system only fits cars equipped with the AMG Performance exhaust

high-frequency sound at high engine speeds

Base Outside Diameter: 6 in (152 mm)

AKRAPOVIC DP-BM/SS/9 Downpipe w/o Cat (SS) for BMW M2 (G87) / M3 (G80/G81) / M4 (G82/G83) 2021-2024 ymm_45 Some of our competitors requireDeveloped to be used in conjunction with the Akrapovi Slip On Line (Titanium) and the Evolution Link Pipe Set (Titanium), this high quality stainless steel downpipe has the catalytic converters removed. Delivering a pure racing sound full of emotion, this provides great feedback at high revs, without drone. Remapping the ECU is mandatory to prevent potential check engine light warning signals. This product is meant for racetrack closed course use