Wiseco Pistons PK1573 ProLite Piston Kit Yamaha - 66.4mm YZ250 2-Stroke

The Wiseco PK1573 ProLite Piston Kit delivers premium forged piston performance for 1999-2001 Yamaha YZ250 two-stroke motorcycles. Featuring a 66.4mm bore diameter, this complete top-end kit includes a high-quality forged piston and top-end gasket kit engineered specifically for demanding motocross applications.

Key Features:

• 66.4mm bore diameter designed for 1999-2001 Yamaha YZ250
• ProLite forged piston construction for superior strength-to-weight ratio
• In-house forging process ensures consistent quality and grain structure alignment
• Includes complete top-end gasket kit for easy installation
• Advanced skirt coating reduces friction and wear
• Optimized for high-performance two-stroke racing applications

Wiseco's forged pistons offer significant advantages over cast alternatives, with condensed grain structure that provides superior resistance to impact and fatigue. The forging process creates aligned grain that follows the contours of the piston, delivering higher mechanical properties and durability under extreme racing conditions. Each ProLite piston is precision-engineered to maximize performance while minimizing weight, making this kit ideal for competitive motocross riders demanding reliability and power.