Description
The piston is the heart of your YZ80’s 2-stroke engine—when it’s worn or damaged, power delivery suffers and reliability tanks. Wiseco’s forged aluminum construction handles the brutal heat and pressure cycles of competitive riding while maintaining the tight tolerances your engine demands. This complete kit eliminates guesswork with all necessary components included, so you can get back on the track without delays.
- Material: Forged aluminum alloy
- Bore Diameter: 47.50 mm
- Oversized: 0.50 mm
- Engine Type: 2-stroke
- Fitment: Yamaha YZ80 1985–1987
- MPN: 646M04750
- Contents: Piston, rings, wrist pin, circlips
- Installation: Professional assembly recommended
- Friction Reduction: Advanced ring design
- Weight: Optimized for acceleration









