M4 Exhaust manufactures exhausts which add power and a more race-inspired sound to your bike as well as lowering the overall weight. Extra time on research and development ensures your exhaust has the ultimate in quality workmanship, ease of installation, and the best performance possible for your motorcycle. New and improved racing exhaust from M4 features the new X96 carbon canister. High-quality 304 stainless steel tubing. New X96 carbon fiber canister. Comes with durable stainless steel spigots and flanges. Midpipe is designed to give exhaust gases optimum flow and improved power characteristics. M4 has built a quality fitting exhaust that is a breeze to install; all mounting hardware and instructions included.