WOSSNER PISTON KIT 01-04 YFM660 100.50 WOSSNER 8507D050 YAMAHA ATV

Piston Kit 100.50mm Bore 100.43mm Wossner 8507D050

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+050.WO (oro2u.com)

Wossner Piston Yamaha XTZ660 Tenere/Raptor 100.50 mm Bore (PN# 8168D050)

Lock P/N CW22

Pin P/N WP017-SP

Rings 1005XSY