Wiseco Pistons PK1055 Top End Piston Kit for Yamaha Bore - YFM/YFB250 71.5mm

The Wiseco PK1055 is a complete top end piston kit designed for Yamaha YFM and YFB250 ATVs with a 71.5mm bore size. This comprehensive kit includes everything needed for a complete top end rebuild, featuring Wiseco's race-proven piston technology and premium gasket components.

Kit Includes:

• Dedicated forging piston manufactured from aerospace-grade alloy for superior strength-to-weight ratio
• CNC machined piston with optimized cam shape and profile for peak horsepower and extended service life
• High-performance ring set engineered for extended life and sustained power output
• Premium quality alloy wrist pin designed for consistent performance and durability
• Top end needle bearing precision machined from high-quality materials for strength and reduced friction
• Complete Wiseco top end gasket kit with advanced sealing technology that exceeds OEM standards

Performance Features:

• Race-proven design chosen by top professional race teams across all forms of motorsports competition
• Precision CNC machining ensures optimal piston-to-cylinder fit and performance
• Advanced materials and engineering deliver superior reliability and power characteristics
• Complete rebuild solution in one convenient package

Wiseco is the trusted choice of professional mechanics and performance enthusiasts for ATV engine rebuilds, offering OEM-quality components with performance-oriented engineering.