Wiseco Pistons PK1221 Piston Kit for Honda XR250 74.0mm Bore 10.5:1 Compression

The Wiseco PK1221 is a complete high-performance piston kit designed for 1986-2004 Honda XR250 engines with a 74.0mm bore. This kit delivers 10.5:1 compression ratio for improved power and throttle response, making it an excellent choice for both rebuilds and performance upgrades.

Key Features:

• 74.0mm bore diameter with precision-forged construction
• 10.5:1 compression ratio optimized for pump gas
• Includes top-end gasket kit for complete installation
• Forged in-house for superior strength and durability
• Advanced skirt coating reduces friction and wear
• Condensed grain structure resists impact and fatigue
• Optimized strength-to-weight ratio for maximum performance

Wiseco forged pistons are engineered to withstand extreme racing conditions and high-performance applications. Unlike brittle cast pistons, Wiseco's forging process creates aligned grain structure that provides superior mechanical properties, impact resistance, and long-term durability. Each piston is manufactured in the USA with complete in-house control over every aspect of production, from raw materials to final skirt coating.