PISTON KIT SET/4 YZF1000 09-15, WOSSNER K8812DA-4 YAMAHA

YAMAHA
R1 YZF1000 2009-2015,

• 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-W9902.000.WO (phoenixmotos.com)
YAMAHA
PISTON KIT SET/4 WOSSNER K8812DA-4 STD BORE 78.00mm.
DISPLACEMENT 1000cc
COMP.HEIGHT 22.80mm

Cross reference numbers ONLY.
CLIP No. CW17,
PISTON PIN No. WP083,
REPLACEMENT RING SET No. 780XAS

Display (cm3) 998
Hub stroke (mm) 52.20
Clearance (mm) 0.04
Wossner compression Ratio: OEM
OEM Compression ratio: 12.70:1
Dome volume (cm3) -3.30
Compression height (mm) 22.80
Theorectical weight (G)