Evolution Titanium Full System Exhaust With Spark Arrestor. This is the flagship of the Akrapovic exhaust system range, used and tested by the top factory teams in motorsport racing. It is simply the finest exhaust system available. Each model is unique and dedicated to maximizing the performance of an engine, while reducing overall weight for optimized handling of the whole motorcycle. It is made entirely of titanium. Special coating for the silencer outer sleeve giving better scratch resistance and easier cleaning. Fulfills FIM 2013 noise control. Perforated inner sleeve and inlet cap are all made of titanium. Flared or conical link pipe is made of titanium and welded to the muffler. Hexagonal mufflers use a titanium end cap. Link pipe to header tube joint is milled on a state-of-the-art CNC machine and secured by high-quality, silicon-shielded tempered springs.