Dedicated forgingPrecision machined, highest quality materials for strength and reduced frictionHigh-performance ring setHighest quality alloy pinExtended life and sustained powerConsistently true and durableChosen by top race teams, in all forms of racingHIGH-PERFORMANCE FORGED 4-STROKE PISTONSDedicated forgingDome designChrome plated piston pinDedicated ringsHorizontal slot pin oilingPressure seal grooveLightweight and superior strengthImproved flame travelMaximum compression and oil controlSmooth edges for improved combustion flow2-STROKE GP SERIES PISTONSOffer additional features over Pro-Lite™ pistonsEach piston is E-Coated on the crown, ring grooves and pin bore for maximum wear resistanceRemoved boost ports for a more predictable power band and increased pull on the top endTOP END PISTON KITSKits include pistons, rings, pins, clips, top end gasket kit and needle bearing when applicable