Description
When your YZ125’s original piston is worn or damaged, you’re looking at lost compression, reduced power delivery, and potential engine damage if you don’t address it quickly. The Wiseco PK1351 restores your 2-stroke’s performance to factory spec—and then some—with aerospace-grade materials and precision engineering that outlasts OEM components. This complete kit includes everything you need for a straightforward rebuild, whether you’re prepping for race season or bringing your bike back to life in the garage.
- 56.00mm bore diameter
- Aerospace-grade forged aluminum
- CNC-machined cam profile
- Includes gasket set
- Lightweight construction
- Extreme heat resistance
- Fits YZ125 (1998–2001)
- Bolt-on installation
- OEM-equivalent fitment
- Complete rebuild kit









