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.
These systems utilize the stock header assembly.
Slip-on replaces the stock restricted muffler resulting in better sound and an increase in power.
M4 silencers look as good as they perform.
Careful design of the midpipe is necessary to give exhaust gases optimum flow and improved power characteristics.
Satin M4 aluminum name plate.
Note: All M4 systems are designed and intended for closed-course competition use ONLY.