Description
If you’re rebuilding a Yamaha engine or pushing higher compression ratios, piston quality directly impacts reliability, power output, and engine longevity. The WSM +1mm 010-827-07K kit delivers OEM-equivalent construction with factory-proven geometry, eliminating the guesswork of aftermarket fitment. The MOS2-coated skirts actively reduce friction and heat while strengthening ring grooves—measurable gains that compound over thousands of combustion cycles.
Order one kit per cylinder and pair with additional ring sets as needed for your specific build.
- Oversized +1mm bore
- MOS2-coated skirts
- Heat-dissipating design
- Hardened ring groove tops
- Improved E-clip design
- Complete kit contents
- Meets/exceeds OEM specs
- Additional rings available
- MPN: 010-827-07K
