WISECO 77mm PISTON KIT YAMAHA YZ250F 14-15, WR250F 15-17, YZ250FX 15-16

Part No. 56-W4961.WI
Yamaha YZ250F 2014 - 2015,
Yamaha YZ250FX 2015 - 2016,
Yamaha WR250F 2015 - 2016,
WISECO 40116M07700 Piston Yamaha YZ250F 77 mm Bore.

Extreme racing conditions demand the strength and toughness that only forged pistons can offer. Compared to cast pistons, forgings are tougher and more durable, and will stand up to the abuse that high performance motorsport applications require. Most castings are brittle, have no grain structure and tend to fail catastrophically when the material yield strength is exceeded. Forgings have condensed grain that is aligned to the features of the part, which

produces higher mechanical properties, and resistance to impact and fatigue. Each forging is designed to optimize the strength-to-weight ratio, and maximize performance.
Cross reference numbers ONLY. 1SM-116A0-00-00, 1SM-116A0-01-00, [1SM-11631-00-00 / 1SM-11631-01-00 + 1SM-11603-00-00 + 1SM- 11633-00-00 + 93450-17129-00]