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The R9100 series crankset achieves the ultimate in optimal power transfer. It does this through its broader Hollowtech II arm and a more reinforced outer chainring on its unique asymmetrical four-arm spider construction. The new R9100 cranks set the highest standards for stiffness and lightness.
New designed crank arm
Maintains high rigidity and reduces weight
HOLLOWGLIDE Crankset (2x11-speed)
4-arm construction crankset
Adapted for race specific disc brake system
Shorter length of rear center with O.L.D.135mm
Redesign the gear teeth profile to fit wider gear pitch
Rider tuned gearing options
Crank arm length: 165, 167.5, 170, 172.5, 175, 177.5, 180mm