Description
If you’re running a Yamaha YZ125 two-stroke, piston wear is inevitable—and it directly impacts throttle response, compression, and overall power delivery. The Wiseco 559M05700 restores your engine to peak performance with precision-forged construction and a complete installation kit, eliminating guesswork during rebuild. This is the proven choice for riders and mechanics who demand reliability without compromise.
- 57.00 mm bore diameter
- High-silicon aluminum alloy
- Precision forged construction
- Includes piston rings
- Includes wrist pin
- Includes circlips
- Yamaha YZ125 1986–1988
- Two-stroke compatible
- Bolt-on installation
- MPN: 559M05700
