Description
A worn top-end can rob your PW50 of power and reliability—the Wiseco PK1161 gives you a straightforward path back to peak performance. This complete piston kit delivers the precision machining and durable materials you need for a rebuild that lasts, whether you’re running youth riders through training or tackling gnarly trail conditions. With gaskets and seals included, installation is streamlined so you spend less time in the garage and more time riding.
- 41mm piston diameter
- CNC-machined construction
- Forged aluminum alloy
- Complete gasket set included
- Lightweight design
- Enhanced power delivery
- Fits Yamaha PW50 1981–2020
- Improved throttle response
- Bolt-on installation
- Built for durability






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