FITS ALL’13-17 HONDA CRF450R! 96mm Cylinder Works or Athena cylinder. Wiseco or CP hi comp pump gas forged piston. Hi temp piston rings. Hotrods HD crank with rod assembled. This is a bolt on kit with no machining required. Piston uses pump or race gas. If you have ANY issue with something you order from us PLEASE let us fix… Read more →