WOSSNER PISTON KIT YZ 250F 2019 76.97 B, WOSSNER 8957DB

Piston kit 77.01mm Wossner 8957DB (+0.01)
YAMAHA
YZ 250 F 2019, Wossner forged pistons are superior in strength and design. Engineered to provide the best possible path for combustion chamber heat transfer to cylinder walls. Elliptically designed to provide a more uniform bearing surface under piston heat expansion, eliminating localized pressure and distributing thrust loads more evenly, thereby preventing piston collapse. Made in Germany.   Part No. 56-W8812.B.WO (oro2u.com) WOSSNER PISTON KIT 8957DB