Evolution Line Exhaust SystemThe flagship of the Akrapovic exhaust system range and simply the finest exhaust system availableUsed and tested by our top factory teams in motorcycle racingEach model is unique and dedicated to maximizing the engine's performance, while reducing overall weight for optimized overall handling of the motorcycleMade entirely of titaniumPerforated inner sleeve and inlet cap are all made of titaniumFlared or conical link pipe is made of titanium and welded to the mufflerHexagonal mufflers feature a composite plastic outlet cap to match the design of each bike; BN mufflers use a titanium end capLink pipe; header tube joint is milled on a state-of-the-art CNC machine and secured by high-quality, silicon-shielded tempered springsConical shaped header tube is made of titaniumFeatures a more durable welded bracket and titanium end capExhaust systems meet FIM noise limitsFor closed course competition use only. Not intended for street use.With spark arrestor.