TOP END PISTON KIT; KTM 85 SX 03-17

Rebuild your engine with confidence using the Athena Top End Piston Kit. Designed as a complete top-end solution, this kit combines a premium cast 2-stroke piston with a perfectly matched top-end gasket kit to simplify installation and deliver dependable performance. Every component is engineered, tested, and manufactured by Athena to work together, ensuring excellent sealing, reliable operation, and long-lasting durability for your next engine rebuild. The piston is gravity cast from a high-performance, high-silicon aluminum alloy and precision CNC machined for exceptional strength, dimensional accuracy, and OEM-quality fitment. Its optimized design promotes smooth engine operation, efficient combustion, and consistent power delivery. Select applications also feature a molybdenum disulfide skirt coating to reduce friction, minimize wear, and extend engine life. Premium piston rings provide an excellent seal against the cylinder wall, helping maintain compression while reducing friction for maximum performance. Included in every kit is Athena's premium top-end gasket set, manufactured using advanced materials and precision engineering backed by over 40 years of gasket manufacturing experience. Designed for dependable sealing under demanding riding conditions, these gaskets provide the reliability needed for both recreational riders and competitive racers. Complete top-end rebuild kitIncludes cast 2-stroke piston and matching top-end gasket kitHigh-performance high-silicon aluminum alloy pistonPrecision CNC-machined for OEM-quality fitGravity-cast piston constructionExcellent strength, durability, and wear resistanceOptimized piston profile for efficient combustionPremium piston ring for superior sealing and reduced frictionPrecision-engineered gasket kit for reliable sealingDesigned and tested by Athena for long-lasting performanceIncludesCast 2-stroke pistonTop-end gasket kitPiston ringWrist pinCirclipsPiston Type: CastPiston Diameter: 46.94mmDisplacement: 85ccCompression: StandardPiston Head: DomedBig End Pin Diameter: 14 x 9.5 x 40mmNumber of Piston Rings: 1Manufactured from high-silicon aluminum alloy for exceptional durability and reliabilitySelect piston applications feature a molybdenum disulfide skirt coating to reduce friction and extend service lifeAthena gasket kits are engineered for OEM-quality sealing and dependable performanceVerify piston size and vehicle compatibility before ordering.