PISTON KIT 01-04 YFM660 100 A WOSSNER 8507DA YAMAHA ATV

Piston Kit 100mm Bore 99.93 Wossner 8507DA (STD)

YAMAHA
XTZ660 Tenere 1991 - 1998,
XTZ660 Raptor 1991 - 1998,

ATV
YAMAHA
YFM660R Raptor 2001 - 2009,
YFM660F Grizzly 2001 - 2009,

• 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-W8507+00A.WO (oro2u.com)
Wossner Piston Yamaha XTZ660 Tenere/Raptor 100 mm Bore (PN# 8168DA)
Lock P/N CW22
Pin P/N WP017
Ring Set P/N 1000XSY

Display (cm3) 660
Hub stroke (mm) 84.00
Clearance (mm) 0.07
Wossner compression Ratio: OEM
OEM Compression ratio: 9.20:1
Dome volume (cm3) -0.30
Compression height (mm) 27.00
Theorectical weight (G)

Cross reference numbers ONLY.
3YF-11631-00-X0, 4966M10000, 01.2660.000

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Majority of our listings are for a direct replacement for your original part.

Our parts are made of quality and are designed to meet or exceed the original OEM Standards.

Our products are often a cost effective alternative to genuine OEM Parts.

Please note: the models of bike we state in our listings are for general guidance only. Please make sure this item will fit your bike before purchasing. Also, we cannot guarantee fitment to any non-UK models.