Wiseco PK1869 2-Stroke GP Series Top End Piston Kit 64.00mm Standard Bore

The Wiseco PK1869 is a complete 2-stroke GP Series top end kit designed for standard 64.00mm bore applications. Everything needed for a full top end rebuild is included in a single kit, featuring a forged piston, rings, wrist pin, circlips, and a complete top end gasket set — making it a true one-stop solution for overboring or rebuilding your 2-stroke engine.

GP Series 2-Stroke Piston Features:

• Electra-Coated crown, ring groove(s), and pin bores for enhanced durability and heat resistance
• ArmorGlide skirt coating reduces friction and wear for extended service life
• Forged aluminum construction — engineered, forged, and machined in the USA in Mentor, OH
• Optimized piston profile designed specifically for endurance and sustained-RPM 2-stroke riding
• High-performance ring kit and alloy wrist pin included and matched to the piston
• Complete top end gasket set included for a full, proper rebuild
• Circlips included for secure wrist pin retention

Wiseco's GP Series builds on the proven Pro-Lite foundation with additional performance and durability enhancements, making these pistons ideal for both competitive riders and hard-working recreational enthusiasts. All Wiseco pistons are forged in-house using dedicated forge tooling, ensuring consistent quality and tight dimensional control from raw material to finished part.