Wiseco 66.40mm Top End Kit for 2002-2004 Honda CR250R PK1195

If you're running a 2002-2004 Honda CR250R at the track or on the trail, a worn top end kills power and reliability. The Wiseco 66.40mm Top End Kit restores lost compression and delivers the durability you need for sustained high-RPM performance. This complete forged piston assembly is purpose-built for 2-cycle engines, eliminating guesswork and ensuring your motor runs strong lap after lap.

The kit combines a high-silicone forged piston with premium rings, wrist pins, circlips, and gaskets—everything needed for a complete top-end rebuild. Wiseco's proprietary ring design ensures zero compatibility issues when you use matched components together. Whether you're prepping for a race season or refreshing a well-used engine, this kit delivers the precision fit and thermal stability demanded by competitive riders and serious enthusiasts.

• Fits 2002-2004 Honda CR250R
• Piston bore: 66.40mm
• Forged high-silicone construction
• Complete kit included
• Includes piston, rings, wrist pins
• Includes circlips, top-end gaskets
• Wiseco rings only (non-interchangeable)
• 2-cycle engine design
• High-temperature rated
• Bolt-on installation
• MPN: PK1195