FOR CLOSED COURSE COMPETITION USE ONLY. NOT INTENDED FOR STREET USE. The flagship exhaust system in the range, the Evolution Line is used by race teams. Constructed from ultra-lightweight titanium to significantly reduce weight and assist with handling. This full system features titanium headers, which give a performance increase over the Slip-On Line and a racing sound. Simple to install, the system has a durable coating, easier cleaning, and increased scratch resistance. Meets FIM noise limits.