Wiseco PK1178 45.0mm Piston Kit for KX65 & RM65 Two-Stroke Engines

The Wiseco PK1178 is a complete top-end piston kit designed for the 2000–2010 Kawasaki KX65 and 2003–2006 Suzuki RM65 two-stroke engines. Machined to a 45.0mm bore diameter (overbore size 752M), this kit provides everything needed for a professional-grade top-end rebuild or overbore service.

Wiseco forged pistons are manufactured using a high-strength aluminum alloy and are engineered to tighter tolerances than OEM cast pistons, delivering improved durability, heat dissipation, and consistent performance in high-revving two-stroke applications.

Kit Includes:

• Forged piston – 45.0mm diameter, precision-machined for a proper bore fit
• Piston ring set – matched to the piston for optimal sealing and compression
• Wrist pin (piston pin) – hardened for durability under high-RPM stress
• Circlips (retainer clips) – secure the wrist pin in place during operation
• Top-end gasket set – includes all necessary gaskets for a complete top-end reassembly

Wiseco's forged construction offers superior strength over cast alternatives, making the PK1178 an ideal choice for recreational riders and racers looking to restore or upgrade their 65cc two-stroke engine's performance and longevity.