Wiseco Pistons PK1441 High-Performance Forged Piston Kit Compression - 69.5mm 10.5 1

The Wiseco PK1441 high-performance piston kit delivers race-proven durability for 2001-2007 Honda TRX250EX ATVs. This complete top-end kit features a 69.5mm forged piston with a 10.5:1 compression ratio, designed to increase power and throttle response while maintaining reliability.

Key Features:

• Forged aluminum construction for superior strength and heat resistance compared to cast pistons
• 69.5mm bore diameter with optimized 10.5:1 compression ratio
• Complete kit includes piston, rings, wrist pin, circlips, and top-end gasket set
• Proprietary skirt coating reduces friction and wear during break-in
• Precision-machined ring grooves and piston crown for consistent sealing
• Condensed grain structure aligned to part features for maximum impact and fatigue resistance

Wiseco pistons are forged in-house in the USA using aerospace-grade aluminum alloy, ensuring complete quality control from raw material to finished component. Each piston design is developed through extensive dyno testing and real-world racing validation. The forging process creates a denser, tougher piston that can withstand the extreme temperatures and pressures of high-performance applications without the catastrophic failure risk associated with cast pistons.

This kit provides everything needed for a professional top-end rebuild, making it ideal for performance upgrades, racing applications, or restoring power to worn engines.