Description
Piston reliability directly impacts engine longevity and peak performance—especially in high-stress off-road riding conditions. The ATHENA 76.97 mm piston kit delivers OE-equivalent durability while engineering superior heat resistance and reduced friction for measurable power gains. This Japanese-manufactured solution keeps your WR/YZ250F running strong through demanding terrain and extended engine cycles.
Technical Specifications:
- Diameter: 76.97 mm
- Material: High-silicon aluminum alloy
- Manufacturing: CNC reverse-extrusion
- Fitment: Yamaha WR250F / YZ250F
- Ring coating: PVD / chromium nitride
- Ring friction: Reduced engagement
- Flame propagation: Optimized profile
- Origin: Made in Japan
- Includes: Complete gasket set
- Installation: Requires engine disassembly
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