Compatible Brand: Fits Polaris Displacement: 340 cc Bore - Standard: 62.3 mm Bore - Oversize: Standard Bore - Actual: 62.3 mm Stroke: 55.6 mm Notes: Fan cooled Number: 09-717MHigh-performance, long life pistons Engineered to provide the best possible path for combustion chamber heat transfer to cylinder walls PTFE coated to create the least amount of friction during the break-in period All our pistons, wrist pins and circlips are manufactured to the original OEM specifications Our kits include: piston, ring(s), wrist pins and circlips All our Kimpex pistons and piston kits are covered by a limited three-years warranty.