Shimano Dura Ace crank 2-FC-R9100
The easiest and most reliable Shimano crankset
The new Dura Ace crankset is characterized by a very high switching performance. The gearshifts are doing with high precision.
This is achieved by its broader HOLLOWTECH II-arm and a reinforced outer chainring to its unique asymmetrical Spider-construction with four arms. In terms of stiffness and lightness, the new R9100 cranks highest standards to meet.
Material crank arms: aluminum
Material Axle: steel
Material chainrings: aluminum / carbon composite
Technology crank: Hollowtech II
Technology chainrings: Hollowglide
Crank lengths: 170.0 mm / 172,5mm / 175.0 mm
Bolt circle diameter: 110 mm
chain line: 43.5 mm
Q: 146 mm
Number of teeth of chainrings: 50-34, 52-36 or 53-39 teeth
Compatibility bottom bracket BB-R9100 BSA / ITA or SM-BB92-41B (optional, not included)
Compatibility chains: Shimano HG-EV 11-speed, HG-X11
Delivery: 1x crankset Dura Ace FC-R9100 including chainrings without bottom bracket.