Wiseco PK1257 Pro-Lite Top End Piston Kit Bore - 2-Stroke 54.00mm

The Wiseco PK1257 Pro-Lite Top End Kit is a complete 2-stroke piston kit featuring a 54.00mm (standard) bore forged piston for the 2000 Honda CR125R. The Pro-Lite is Wiseco's signature forged 2-stroke piston line, engineered for all-purpose 2-stroke performance with decades of racing heritage behind every design.

This is a complete, all-in-one top end rebuild solution. Everything needed for a full top end service is included in a single kit, eliminating the need to source components separately.

Kit Includes:

• Forged Pro-Lite piston (54.00mm / 676M bore)
• High-performance piston ring(s)
• Aerospace-alloy wrist pin
• Circlips
• Top end wrist pin needle bearing
• Complete top end gasket kit

Key Features:

• Dedicated forging — each piston uses a dedicated forge tool designed specifically for this application, not a generic blank
• Aerospace-grade aluminum alloy — delivers a superior strength-to-weight ratio versus cast pistons for better throttle response and durability
• CNC machined cam profile — optimized skirt shape for peak horsepower and extended service life
• High-performance ring set — engineered to maintain consistent sealing and power output over the life of the piston
• Precision alloy wrist pin — machined to tight tolerances for reduced friction and long-term reliability
• Premium top end gasket kit — exceeds OEM sealing standards using high-quality materials
• Forged in the USA — Wiseco produces all pistons in-house using proprietary forge tooling for complete manufacturing control

Wiseco Pro-Lite 2-stroke pistons are trusted by top race teams across Supercross, Motocross, and GNCC racing. Forged aluminum pistons resist impact and fatigue far more effectively than cast alternatives, making the PK1257 an ideal choice for both competitive riding and hard recreational use.