Wiseco 431M07125 Forged Piston Kit Honda CR250R 71.25mm

The Wiseco 431M07125 is a high-performance forged piston kit designed for Honda CR250R (1978–1980) and Honda ATC (1981–1984) two-stroke engines. This kit is built to Wiseco's exacting standards, delivering the durability and power output demanded by motocross and ATV riders.

Key Features:

• Forged High-Silicon Aluminum Alloy Construction: Wiseco's proprietary forging process produces a piston that is significantly stronger and lighter than cast alternatives, resisting heat and stress under high-RPM two-stroke conditions.
• Innovative Piston Skirt Design: The engineered skirt geometry reduces friction and improves ring seal, maximizing horsepower and torque output throughout the powerband.
• Complete Kit Included: Each kit includes the forged piston, rings, wrist pin, and circlips — everything needed for a full piston replacement.
• Oversize Bore (71.25mm): This is an oversize piston; cylinder boring or re-sleeving is required prior to installation.
• OEM Cross-Reference: Replaces Wiseco dome number 2805CD; compatible with CR250R and ATC250 engine families.

Wiseco has been manufacturing forged pistons in the USA since 1941, and their two-stroke motocross piston kits are trusted by amateur and professional riders worldwide. The 431M07125 is an ideal choice for engine rebuilds requiring a reliable, high-quality oversize piston solution.