Piston Kit Gr. II (Size B) for KTM 450 SX-F, Husqvarna FC 450 2015-2020 - 79430107110 II

This is an OEM piston kit featuring a high-performance piston, circlips, needle bearing, wrist pin, and complete top-end gasket set including base, head, and exhaust gaskets. It ensures reliable compression and sealing for optimal engine performance in motocross and off-road bikes. Designed as a direct replacement for worn components during rebuilds.

Compatible with 2015-2020 KTM 450 SX-F (EU/US), 450 SX-F Factory Edition (US), 450 SX-F Cairoli/Herlings Replica (EU), 450 XC-F (US); Husqvarna FC 450 (EU), FC 450 Rockstar Edition (US), FS 450 (EU), FX 450 (US). Covers all listed variants for these models in the specified years.

The kit includes precision-engineered parts like a forged piston, chromoly wrist pin, caged needle bearing, and high-quality gaskets for durability under extreme conditions. Gr. II (Size B) designation indicates the specific oversized piston for engines requiring this grade.

Installation requires standard top-end rebuild procedures, including cylinder honing if needed. Always verify piston grade against cylinder measurements.

Check compatibility list below to see if this part fits your motorcycle model.