Piston Kit - +.020" - Bombardier/Ski Doo/Moto Ski/Rotax - 582/583 Engine TypeHigh performance, long life, die cast pistons. Engineered to provide the best possible path for combustion chamber heat transfer to cylinder walls. All pistons, rings, pins and circlips are manufactured to OEM specifications. All individual components will interchange with original parts. PTFE coated to create the least amount of friction during break in period. All pistons are priced with ring(s), wrist pins and circlips. Chrome plated rings cannot