Description
High-revving engines demand pistons engineered for extreme conditions—stock units simply won’t sustain the thermal and mechanical stress of sustained performance. The WSM Piston Kit delivers OEM-equivalent quality with critical upgrades to ring groove durability and thermal management, giving you the reliability to push harder without premature wear or failure. Built for serious builders and racers who refuse to compromise on engine internals.
- Oversized +.50 mm
- Yamaha application
- Includes piston, rings, pin, clips
- MOS2 skirt coating
- Reduces friction and heat
- Improves power output
- Draws heat through piston walls
- Hardened ring groove tops
- Enhanced ring seating strength
- Improved E-clip design
- Order one kit per cylinder
- Additional rings sold separately
- Bolt-in installation
