Wiseco Top-End Rebuild Kit for 1999-01 Yamaha YZ250 - 66.40mm - PK1573 1986 Yamaha TT600 2010 Suzuki FZ50

2010 Suzuki FZ50

Fits: 1989-90 Suzuki RM80

Because the reed petals only need to travel half the distance of that on a conventional reed valve design

1985-99 Polaris Trail Boss 250

Wiseco Top-End Rebuild Kit for 1999-01 Yamaha YZ250 - 66.40mm - PK1573 1986 Yamaha TT600 2010 Suzuki FZ50Wiseco Performance Top End Rebuild Kit Part Number: PK1573 Piston Size: 66. 40mm These kits contain everything you need to complete your rebuild the right way, the first time High Performance ring kit and alloy pin included with each piston kit for extended life and sustained power. Dedicated forgings used for superior strength to weight ratio utilizing aerospace alloy. All Piston Kits are precision crafted and forged in the USA Wiseco's complete Top