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 09-689 Piston For Arctic Cat, Kawasaki 09-911 Piston Kit 93101-17001 Oil Seal For Yamaha 6F5-W0093-01-00 Carburetor Repair Kit For Yamaha