Wiseco Top-End Rebuild Kit for 1999-01 Yamaha YZ250 - 66.40mm - PK1573 1986 Yamaha TT600 Because the reed petals only

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

2006 Polaris Sportsman 700 EFI

Fitments 2002 Kawasaki KVF300 Prairie 2x4

1980-82 Suzuki GS550L/M

Wiseco Top-End Rebuild Kit for 1999-01 Yamaha YZ250 - 66.40mm - PK1573 1986 Yamaha TT600 Because the reed petals onlyWiseco 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