KIMPEX PISTON KIT, 550 FAN POLARISFeatures: High 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 Kits include: piston, ring(s), wrist pins and circlips OEM numbers: 3085941 3087026 3088218 3089487