Wiseco 4227M07200 Kawasaki KZ900 72-75/1000 77-82 121 CR Piston KitWiseco 4227M07200 Kawasaki KZ900 72 75 1000 77 82 121 CR Piston Kit The Wiseco team has remained at the forefront of powersports performance through every era and evolution, including the development of high performance 4 strokes. Today, Wisecos forged 4 stroke pistons are designed for each specific engine application and built to the tightest tolerances for the ultimate combination of performance and strength. Proven at every level of riding, Wiseco