PISTON 98-00 YZF/WR400F 92 HC WOSSNER PISTON KIT 8639DB
Piston kit 92.01mm Bore 91.96mm Wossner 8639DB(+0.01)
WR 400 F 1998 - 1999,,,
YZ 400 F 1998 - 1999,,,
- 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-W199+00B.WO (Off Road Only Ltd.) Wossner Piston Yamaha YZ400FPro 92 mm Bore (PN# 8639DB)
Lock P/N CW18
Pin P/N WP053
Ring Set P/N 920XSY