Wiseco PK1313 Pro-Lite Top End Piston Kit for Suzuki - 54.0mm 1990 RM125

The Wiseco PK1313 is a complete Pro-Lite Top End Piston Kit designed for the 1990 Suzuki RM125, featuring a 54.0mm bore diameter (forging code 641M). This kit delivers everything needed for a full top end rebuild, combining race-proven components into a single, convenient package.

Wiseco's Pro-Lite design uses a dedicated forging from aerospace-grade aluminum alloy to achieve an exceptional strength-to-weight ratio. The extra-lightweight piston construction promotes instant throttle response, while the computer-engineered piston skirt profile minimizes cylinder wall friction for reduced wear and improved efficiency.

Kit Includes:

• Pro-Lite forged piston — CNC machined to precise tolerances with optimal cam shape and profile for peak horsepower and extended service life
• Anti-detonation grooves and precision ring land diameter to eliminate ring blow-by and maximize performance
• High-performance ring set — engineered for extended service life and sustained power output
• Aerospace alloy wrist pin — precision machined for consistent strength, durability, and reduced friction
• Premium top end needle bearing — highest quality materials for smooth operation and long service life
• Wiseco top end gasket kit — premium materials engineered to exceed OEM sealing standards

Wiseco Pro-Lite piston kits are trusted by factory race teams across all forms of motorcycle competition. Each component is manufactured to exacting standards, making the PK1313 an ideal choice for both competitive racing and high-performance street riding.