Cylinder HeadCaracteristicas: Developed and designed in conjunction with the Kommander himself, Steve Webster, as a Blowsion exclusive offering One piece Yamaha billet aluminum CNC performance cylinder head kit provides the best of both worlds with excellent horsepower gains, better cooling capacity and a price that is easy on the wallet State of the art heads use the same replaceable domes of Blowsion's popular 2 piece girdled Yamaha heads and utilize an improved