Scorpion BMW G80/G81 M3 & G82/G83 M4 Exhaust Single MidpipeEnhance the sound, flow, and performance of your BMW G80 G81 M3 or G82 G83 M4 with the Scorpion Single Midpipe, available for both GPF and Non GPF models. This 89. 9mm (3. 5") high grade exhaust section replaces the factory midpipe with a free flowing, motorsport inspired design, significantly improving turbo response and delivering a deeper, more aggressive exhaust note. Key Features: Available for both GPF and Non GPF models 89. 9mm (3. 5") large