Wiseco 466M06650 Piston Kit Honda CR250R 1981-1983 66.50mm 2-Stroke Forged

The Wiseco 466M06650 is a high-performance forged piston kit designed for the Honda CR250R (1981–1983). Machined to a 66.50mm bore diameter, this piston is built to restore or upgrade your 2-stroke engine with precision-fit components that meet or exceed OEM standards.

Wiseco pistons are forged from a 2618 high-silicon aluminum alloy, one of the strongest alloys available for high-performance piston applications. This forging process produces a denser, more durable piston compared to cast alternatives, resulting in greater resistance to heat and mechanical stress under high-RPM, high-load conditions.

Key Features:

• Forged 2618 aluminum alloy construction for superior strength and thermal stability
• Precision 66.50mm bore diameter oversize piston
• Innovative skirt profile optimized for maximum horsepower and torque output
• Complete kit includes piston, rings, wrist pin, and circlips
• Manufactured to tight tolerances for proper ring seal and reduced blow-by
• Designed for Honda CR250R 2-stroke motocross applications

Important: This is an oversize piston and requires professional cylinder boring or sleeving to the appropriate diameter before installation. Always verify bore size and consult a qualified engine builder when installing oversize pistons.