KYOSTAR 3D Z-Pipe Midpipe for 2021+ BMW G80 M3 G82 G83 M4 2022+ G81 M3 S58 3.0T The KYOSTAR 3D Z-Pipe Midpipe is designed for selected BMW S58-powered M models, including G80/G81 M3 and G82/G83 M4 applications. This performance midpipe reduces exhaust restriction while improving exhaust flow efficiency and delivering a deeper, smoother, and more aggressive exhaust tone. Featuring a unique 3D Z-pipe configuration, this midpipe helps improve exhaust pulse balance and refine the