Description
Your YZ125 piston is the foundation of engine reliability and power delivery—a worn or damaged unit tanks your throttle response and durability on the track. The Wiseco 845M05400 piston kit delivers precision-engineered construction with a tight tolerance fit that restores lost compression and responsiveness. Whether you’re rebuilding after top-end wear or upgrading a high-mileage engine, this kit ensures consistent performance for both recreational riding and competitive racing.
- Fits YZ125/YZ125X (2005-2021)
- Wiseco OEM-quality construction
- Precision-engineered tolerances
- Improved throttle response
- Reduced engine load
- Lightweight piston design
- Compatible with aftermarket mods
- Bolt-on installation
- Sold without gasket kit
- Standard hand tools required
- MPN: 845M05400
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