FOR CLOSED COURSE COMPETITION USE ONLY. NOT INTENDED FOR STREET USE.The flagship of the Akrapovič exhaust system range, used and tested by our top factory teams in motorcycle racing. It’s simply the finest exhaust system available. Each model is unique and dedicated to maximizing the engine’s performance, while reducing overall weight for optimized overall handling of the motorcycle. It is made entirely of titanium. Our 2013 exhaust systems meet new FIM 2013 noise limits, feature a more durable welded bracket and titanium end cap.