Wiseco's complete top end Piston Kits are offered for nearly every popular motorcycle application. These kits contain everything you need to complete your rebuild the right way, the first time. High quality parts specifically chosen by us to match our forged pistons are included in this kit for easy one stop shopping.
Features:

• Each piston is built from race proven designs that are chosen by the top race teams in all forms of racing including Supercross, Motocross, GNCC, Superbike, and more


• PK kits from Wiseco feature a complete top end gasket kit that gives you everything you need to complete your rebuild from premium materials


• Dedicated forgings used for superior strength to weight ratio utilizing aerospace alloy


• High Performance ring kit and alloy pin included with each piston kit for extended life and sustained power

Fitment:
2003 Yamaha WR450F
2003 Yamaha YZ450F
2004 Yamaha WR450F
2004 Yamaha YZ450F
2005 Yamaha WR450F
2005 Yamaha YZ450F
2006 Yamaha WR450F