Products Snowmobile- PolarisPiston Kit Back Piston Kit 09-720-03 Item number: 09-720-03 Brand: Polaris CC: 500 Bore Size: 70.75 3L/Cmm Stroke: 64 Fit on models: You May Also Be Interested In Piston Kit 09-710 Piston Kit 09-730-01 Voltage Regulator/Rectifier 0630-250/ 0630-323 Piston 290-887-060