Category Snowmobile/YamahaYamaha - Snowmobile Piston Kits Back Piston Ring R09-816 Snowmobile Parts & Accessories Type: STD 01 (0.25) 02 (0.50) 03 (0.75) 04 (1.00) Viewer:381 Item No: R09-816 Fits with Piston 09-816 Bore Size: 73mm Stroke: 64 Fits: 1983-1991 Yamaha VMX 540 You May Also Be Interested In Piston Kit 09-811 Piston Kit 09-816 Top End Gasket Kit 62T-W0001-TG Thermostat Seal 310058 Watch Our Product Videos