Wiseco PK1539 Pro-Lite Top End Kit 68.5mm Bore Suzuki LT250R Quadracer

The Wiseco PK1539 is a complete Pro-Lite top end kit designed for the Suzuki LT250R Quadracer (1988–1992), featuring a 68.5mm bore (571M) forged piston. This all-inclusive kit delivers everything needed to properly overbore or rebuild the top end of your 2-stroke LT250R engine in a single purchase.

Kit Includes:

• Pro-Lite forged piston (68.5mm / 571M)
• High-performance ring set
• Alloy wrist pin
• Circlips (pair)
• Complete top end gasket set
• Top end needle bearing

Pro-Lite Piston Features:

• Dedicated forging using aerospace-grade aluminum alloy for superior strength-to-weight ratio
• CNC machined for optimal cam shape and profile, maximizing power output and service life
• Horizontal slot-pin oiling reduces friction and provides scuff resistance
• Pressure seal groove for maximum ring seal and compression retention
• Race-proven design trusted by top race teams across all forms of competition
• Diamond-turned finish for precise sizing and minimal variation

Wiseco's Pro-Lite series represents decades of 2-stroke piston engineering, combining performance, reliability, and value in one package. Cross-reference part numbers: 571M06850, W5148, B1002. Note: Cylinder boring or sleeving may be required for oversize applications.