Description
When your YZ125’s original piston starts showing wear, power delivery suffers and reliability becomes a gamble. The Wiseco 846M05400 replaces it with aerospace-grade forged aluminum and precision coatings that restore—or exceed—factory performance while handling the demands of competitive riding and trail abuse. This complete kit arrives with rings, wrist pin, and circlips, so you’re ready to install and ride.
- Bore diameter: 54mm
- Material: Forged aluminum alloy
- Piston crown: Electra-coated
- Skirt coating: ArmorGlide
- Machining: CNC precision
- Fitment: YZ125 (2005–2021)
- Fitment: YZ125X compatible
- Installation: Bolt-on engine overhaul
- Includes: Piston rings
- Includes: Wrist pin
- Includes: Circlips
- Weight: Lightweight construction
- Performance: Enhanced throttle response
- Durability: Race-proven design
