Wiseco PK1608 Pro-Lite 54mm 2-Stroke Piston Kit with Top-End Gasket Kit for Kawasaki KX125

The Wiseco PK1608 is a complete Pro-Lite top-end piston kit designed for the 1999–2000 Kawasaki KX125. Featuring a standard 54.00mm bore, this kit delivers everything needed to perform a proper top-end rebuild in a single purchase — no additional sourcing required.

The Pro-Lite forged piston is CNC machined from high-silicon aerospace alloy bar stock for a superior strength-to-weight ratio, providing exceptional durability and consistent performance. Dedicated forgings and precision machining ensure optimal cam shape and port relief profile for peak horsepower and extended service life.

Kit Includes:

• 1 Pro-Lite forged piston (54.00mm / STD bore)
• High-performance piston ring set
• Alloy wrist pin (15 x 41mm)
• Circlips (2)
• Complete top-end gasket kit

Pro-Lite Piston Features:

• Forged from high-silicon aerospace alloy for improved tensile strength
• CNC machined for optimal cam shape and port profile
• Lightweight construction for instant throttle response and maximum torque
• Race-proven design trusted by top Supercross, Motocross, and GNCC teams
• Engineered, forged, and machined in the USA (Mentor, OH)
• Wiseco rings are application-matched — only Wiseco rings should be used with Wiseco pistons

The PK1608 is a bolt-in solution for rebuilding the 125cc 2-stroke top end with confidence. Whether restoring a worn engine or refreshing after a season of hard racing, this kit provides factory-quality components in a convenient all-in-one package.