Wiseco PK1289 Pro-Lite Piston Kit with Top-End Gasket Kit - 67.00mm 2-Stroke

The Wiseco PK1289 Pro-Lite Piston Kit is a complete 67.00mm forged 2-stroke piston kit designed for the Kawasaki KX250 (1993–2001). Built on decades of 2-stroke performance expertise, Pro-Lite is the forged 2-stroke piston that started it all — engineered, forged, and machined entirely in the USA at Wiseco's facility in Mentor, Ohio.

This kit delivers everything needed for a top-end rebuild in one package. Wiseco selects high-quality matched components to pair with their forged pistons, eliminating the guesswork of sourcing individual parts.

Kit Includes:

• Forged 67.00mm Pro-Lite piston
• Piston ring(s)
• Wrist pin
• Wrist pin clips
• Top-end wrist pin bearing
• Top-end gasket kit

Key Features:

• 100% forged construction — Wiseco is the only aftermarket piston manufacturer in the USA that uses exclusively forged pistons, not cast
• Aerospace-grade aluminum — the forging process compresses and aligns the material's grain structure, resulting in superior impact resistance, fatigue strength, and ductility compared to cast alternatives
• Optimized strength-to-weight ratio — dedicated forgings with additional lightening operations keep reciprocating mass low without sacrificing durability
• Improved tensile strength — forged material properties optimize strength and extend service life under high-performance, high-compression conditions
• 3D design and finite element modeling — each piston design is engineered using modern simulation tools to maximize performance for the specific engine application
• In-house manufacturing and dyno testing — full control from raw material to finished part ensures consistent quality and allows for ongoing performance development
• Bore size: 67.00mm (617M oversized bore)

Whether you're rebuilding for trail riding or preparing for the track, the Wiseco PK1289 Pro-Lite kit provides the reliability and performance that top race teams across motocross, supercross, and GNCC have trusted for decades.