Product SnowmobilePiston Back 09-807 Piston Kit For Yamaha Piston Kit 09-807 Type: Standard (STD) 01 (0.25) 02 (0.50) 03 (0.75) 04 (1.00) Item Number: 09-807 Description: Piston Kit, Bore 66mm You May Also Be Interested In R09-814 Piston Kit For Yamaha 09-914 Piston Kit 0934-0081 Top End Gasket Kit For Yamaha 93101-36M46-00 Oil Seal For Yamaha