Description
A worn or damaged piston directly limits your YZ125’s power output and reliability—this Wiseco kit delivers the precision engineering needed to restore peak performance. The high-silicon aluminum alloy construction handles the thermal demands of competitive riding while the included gasket set eliminates guesswork on a complete top-end rebuild. Whether you’re recovering from a seized engine or upgrading for measurable gains in throttle response, this is the OEM-quality replacement serious riders choose.
- High-silicon aluminum alloy
- CNC-machined for precision
- Includes complete gasket set
- Improves compression ratio
- Enhanced throttle response
- Fits 2003-2004 YZ125 only
- Bolt-on installation
- Extended engine longevity
- Proven durability under load
