Description
If you’re rebuilding or refreshing your Kawasaki 750 engine, piston quality directly impacts reliability, power output, and engine longevity. WSM’s +.50mm piston kit delivers OEM-matching construction with performance-oriented refinements—particularly the MOS2 coating on the skirts, which reduces friction and heat while actually drawing thermal energy away from critical ring grooves. This is a complete, ready-to-install solution that eliminates sourcing individual components.
Order one kit per cylinder to ensure consistent performance across all bores.
- Meets or exceeds OEM specifications
- +.50mm oversize bore
- MOS2-coated skirts for reduced friction
- Piston rings included
- Wrist pin and E-clips included
- Improved E-clip design
- Specially hardened ring groove tops
- Heat-dissipating piston construction
- Additional rings available separately
- Bolt-on installation
- Part number: 50-258-05K









