PISTON KIT 01-04 YZF250 77.00, FORGED WOSSNER 8559DC 3-RING

Piston kit 77.02mm Bore 76.98 Wossner 8559DC (+0.02)

YAMAHA
YZ250F 2001 - 2004,
WF250F 2001 - 2004,
(3 RINGS)

• 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-W4738+00C.WO (oro2u.com)
Wossner Piston Yamaha YZ250F 77 mm Bore (PN# 8559DC)
Lock P/N CW16
Pin P/N WP059
Ring Set P/N 770XAS-2

Display (cm3) 249
Hub stroke (mm) 53.6
Clearance (mm) 0.04
Wossner compression Ratio: OEM
OEM Compression ratio: 12.50:1
Dome volume (cm3) -4.70
Compression height (mm) 22.20
Theorectical weight (G)

2001 Yamaha 250 F 2001 Yamaha WR 250 F 2002 Yamaha 250 F 2002 Yamaha WR 250 F 2003 Yamaha 250 F 2003 Yamaha WR 250 F 2004 Yamaha 250 F 2004 Yamaha WR 250 F