Description
When your YZ250F’s top end starts showing wear, a complete piston and gasket kit is the most reliable path to restoring full compression and power delivery. Wiseco’s PK1241 gives you OEM-spec precision with forged aluminum construction that handles the demands of both trail riding and competition. This is a comprehensive rebuild solution—piston, rings, and gaskets all in one package—so you can get back to riding with confidence.
- 77.00 mm bore diameter
- 12.7:1 compression ratio
- Forged aluminum construction
- High-performance ring set
- Complete gasket kit included
- Fits Yamaha YZ250F (2001-2004)
- Fits Yamaha WR250F models
- Bolt-on installation
- Professional-grade reliability









