Description
If you’re pushing your YZ426F or WR426F to its limits, a worn or stock piston compromises both reliability and peak power output. The Wiseco Piston Kit delivers the compression ratio and engineering precision needed to unlock faster acceleration and consistent performance in competitive conditions. This is a bolt-on upgrade that pays dividends on the track.
- 95mm bore diameter
- 12.5:1 compression ratio
- Dome piston design
- High-strength materials
- Tight machining tolerances
- Enhanced airflow optimization
- Fits YZ426F (2000–2002)
- Fits WR426F (2001–2002)
- Direct bolt-on installation
- MPN: 4693M09500
