Description
If you’re pushing a Yamaha 350 to its limits, stock pistons won’t cut it. The WSM Piston Kit delivers OEM-quality construction with genuine performance upgrades—better ring groove durability, reduced friction, and improved heat management that translates to more power and longer engine life. This is the upgrade serious riders choose when reliability and performance matter.
Technical Specifications:
- MPN: 50-540-04K
- Oversize: +.25 mm
- Application: Yamaha 350
- Complete kit contents
- Piston, rings, pin, clips
- Meets/exceeds OEM standards
- MOS2 coated skirts
- Reduces friction, heat
- Improved E-clip design
- Hardened ring grooves
- Order one per cylinder
- Additional rings available
- Bolt-on installation
