If you've been searching for a truly high performance racing middle exhaust for your M3 look no further. Manufactured from 100% - 2.75 inch 304 stainless steel, it includes (four) 4 inch resonators, mounting hardware and OE quality clamps and flanges for easy bolt-on installation. The middle racing exhaust measures close to 80 inch in length and delivers exactly what the M3 owner demands in a performance racing exhaust; increased power, reduced weight, and the throaty exhaust note.