Description
Stock pistons in your YZ 250 can’t handle sustained high RPM abuse—they expand unpredictably and rob you of peak power right when you need it most. The Wiseco 605M06800 piston kit solves this with a high-silicon aluminum alloy engineered specifically for 2-stroke demands, delivering consistent compression, reduced friction, and measurable horsepower gains across the powerband. If you’re serious about reliability and performance, whether you’re racing or trail riding, this is the upgrade that pays dividends.
- Material: High-silicon, low-expansion aluminum
- Machining: CNC-precision engineered
- Design: Aerodynamic skirt profile
- Fitment: YZ250 1988-1991, WR250Z 1991, YZ250WR 1989-1990
- Installation: Bolt-on replacement
- MPN: 605M06800
- Power Gain: Increased output and response
- Durability: Rated for competitive and recreational use
