Description
A properly matched piston kit is critical for reliable high-RPM performance and cylinder longevity. WSM’s +.5mm oversized pistons deliver OEM-quality construction with performance-focused engineering—the MOS2 coating on the skirts actively reduces friction and heat while drawing thermal energy through the piston walls, translating to measurable gains in power and component lifespan. The hardened ring grooves resist wear under sustained boost and detonation, ensuring consistent compression and seal integrity across your rebuild.
- +.5mm oversize fitment
- Yamaha application specific
- Complete kit contents
- Piston, rings, pin, clips
- MOS2 friction-reducing coating
- Hardened ring groove tops
- Improved E-clip design
- Meets/exceeds OEM quality
- Order one per cylinder
- Additional rings available
- Reduced heat generation
- Enhanced thermal management
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