PISTON KIT 2014 YZF250 77.0 HC, FORGED WOSSNER 8894DA, 1SM-11631-01-00

Piston kit 77.00mm Bore 76.95 Wossner 8893DA (STD)

YAMAHA
YZF250 2014 - 2015,

• 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-W4962.A.WO (oro2u.com)
Wossner high compression Piston Yamaha YZ250F 77 mm Bore
Lock P/N CW16
Pin P/N WP087
Ring Set P/N 770XAS-2
Piston size 76.95mm
(PN# 8894DA)

Display (cm3) 249
Hub stroke (mm) 53.60
Clearance (mm) 0.05
Wossner compression Ratio: 13.70:1
OEM Compression ratio: 13.50:1
Dome volume (cm3) -3.00
Compression height (mm) 20.20
Theorectical weight (G)

Cross reference numbers ONLY.
1SM-11631-01-00