Wiseco 40310M08500 Wiseco 15-23 Kawasaki Brute Force 85mm Piston KitWiseco 40310M08500 Wiseco 15 23 Kawasaki Brute Force 85mm Piston Kit Engineered, forged, and machined in the USA in Mentor, OH Designed and built for each specific 4 stroke powersports engine Improved tensile strength of forged material optimizes strength and service life Dedicated forgings allow for optimized strength to weight ratio Includes high quality piston rings, wrist pin(s), and circlips