WOSSNER 99mm PISTON KIT ALL BMW R1100RS/GS/S, R1150RS/S

Piston kit 99mm BORE 98.96 Wossner K8543DA-2 (STD)

BMW
(All years)
1100RS,
1100GS,
1100S,
1150RS,
1150S, �

• 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-W9793.099.WO (oro2u.com)
ALL YEARS BMW 1100/1150 RS, GS, S K8543DA-2
WOSSNER K8543DA-2 PISTON bore 99mm set/2,

Stroke 70.5mm

OEM Comp. Ratio 10.7:1
Dome/Bowl Volume +2.3cm
Comp. Height 32.10mm

Lock P/N C22X1.6
Pin P/N WP009
Ring Set P/N 990XSY

Display (cm3) 1085
Hub stroke (mm) 70.50
Clearance (mm) 0.04
Wossner compression Ratio:OEM
OEM Compression ratio: 10.70:1
Dome volume (cm3) +2.30
Compression height (mm) 32.10
Theorectical weight (G)