Wiseco Pistons 431M07150 Pro-Lite Forged Piston Kit Bore - 71.5mm

The Wiseco 431M07150 Pro-Lite Piston Kit delivers race-proven performance for your Honda ATC250R. Designed specifically for 1981-1984 models, this kit features a 71.5mm bore size (1.50mm oversized) to restore compression and power in worn cylinders.

Key Features:

• 100% forged in-house in the USA for superior strength and durability
• Condensed grain structure aligned to part features for maximum impact and fatigue resistance
• Optimized strength-to-weight ratio for peak performance
• Pro-Lite design reduces reciprocating mass while maintaining structural integrity
• Engineered to withstand extreme racing conditions and high RPM operation
• Includes piston, rings, wrist pin, and circlips for complete installation

Wiseco's forging process creates pistons that are significantly tougher than cast alternatives, with grain structure that resists catastrophic failure under high-stress conditions. When cast pistons reach their material yield strength and fail suddenly, Wiseco forgings continue to perform thanks to their superior mechanical properties. Each piston undergoes complete in-house manufacturing from raw material to final skirt coating, ensuring consistent quality control throughout the entire process.

This 1.50mm oversized piston kit is ideal for engine rebuilds where cylinder boring is required to restore proper tolerances and compression ratios.