Description
A worn or damaged piston directly kills your YZ125’s power delivery and throttle response—and rebuilding with OEM parts leaves performance on the table. The Wiseco PK1191 gives you a complete, ready-to-install solution engineered specifically for your machine, restoring reliability while unlocking measurable gains in acceleration and mid-range punch. Whether you’re prepping for race season or rebuilding after hard use, this kit eliminates guesswork and delivers the durability you need.
- Bore diameter: 54mm
- Vehicle: 2002 Yamaha YZ125
- Engine type: 2-stroke
- Material: Aerospace-grade aluminum
- Construction: Advanced forged
- Fitment: Vehicle-specific
- Installation: Bolt-on rebuild
- Contents: Piston, rings, gaskets
- Made: USA
- MPN: PK1191
