The Akrapovic Racing Line Exhaust System is constructed of a stainless steel head pipe with a titanium muffler and was developed by the same group of engineers who work with championship-winning race teams in World Motocross, Supercross and World Enduro Classes. Armed with the feedback provided by champions like Ryan Dungey and Antonio Cairoli, Akrapovic has designed their exhaust systems to deliver increased performance throughout the entire RPM range. Increasing power and torque throughout the entire RPM range offers smoother, controllable power and is key for maximum performance and handling.