Wiseco PK1190 Pro-Lite 2-Stroke Top End Piston Kit 50.5mm Bore for Kawasaki KX85

The Wiseco PK1190 is a complete Pro-Lite 2-stroke top end piston kit designed for the Kawasaki KX85 (2001–2013), featuring a 50.5mm overbore forged piston (forge code 782M). This kit provides a one-kit solution for a full top end rebuild, combining a precision forged piston with all necessary hardware and gaskets.

Pro-Lite Forged Piston Technology:

• Dedicated forging engineered specifically for this application, delivering an optimized strength-to-weight ratio using aerospace-grade alloy
• Computer-engineered piston skirt profiles minimize cylinder wall friction for improved throttle response and reduced wear
• Race-proven design trusted by top racing teams across motocross, supercross, and off-road competition
• CNC machined for precise fitment and consistent quality

Complete Top End Kit Includes:

• Forged Pro-Lite piston (50.5mm bore)
• High-performance piston ring set for extended service life and sustained power output
• Premium alloy wrist pin — precision machined for durability and reduced friction
• Circlips
• Top end needle bearing (where applicable)
• Wiseco top end gasket kit — manufactured to exceed OEM sealing standards

The Wiseco PK1190 is the ideal choice for riders seeking a reliable overbore rebuild for the Kawasaki KX85. The Pro-Lite series represents decades of 2-stroke piston development, offering an excellent balance of performance, reliability, and value. Cross-reference forging code: 782M / 782M05050.