Wiseco Pistons PK1347 Pro-Lite Piston Kit 56.0mm for 2003-2004 Yamaha YZ125

The Wiseco PK1347 Pro-Lite piston kit is engineered specifically for 2003-2004 Yamaha YZ125 two-stroke motorcycles, featuring a precision 56.0mm bore diameter. This complete top-end kit includes a high-performance forged piston and top-end gasket kit for a complete rebuild solution.

Key Features:

• Premium forged piston construction for superior strength and durability compared to cast alternatives
• 56.0mm bore diameter designed for YZ125 applications
• Includes complete top-end gasket kit for hassle-free installation
• Advanced grain structure alignment provides exceptional impact and fatigue resistance
• Optimized strength-to-weight ratio for maximum performance
• Skirt coating for reduced friction and improved longevity
• 100% manufactured in the USA with in-house forging and quality control

Wiseco's forging process creates a condensed grain structure that is aligned to the piston's features, delivering higher mechanical properties than cast pistons. This makes the PK1347 ideal for motocross racing and aggressive riding conditions where reliability and performance are critical. The forged construction resists catastrophic failure even under extreme stress, while the precision machining ensures optimal ring seal and cylinder wall contact.