Supremely light and stiff, the new The Shimano Dura Ace FC-R9200 cranks offer extremely fast and precise shifting thanks to the uniquely designed chainrings which feature a Hollowglide construction. The lightweight crank arms, manufactured using Hollowtech II technology provide responsive acceleration from any speed and the exclusive forging process allows the production of extremely light crank arms that guarantee maximum stiffness and efficiency in power transmission. The fixed connection of the right arm to the axle of the bottom bracket and its external bearing also serve an optimum relationship between stiffness and low weight.

Material:

• Crank arms, inner chainring: aluminium (anodized)
• Outer chainring: aluminium (anodized), carbon fiber reinforced polymer (CFRP)
• Axle: steel (plated)
  

Compatibility:

• Front derailleur: FD-R9250, FD-R8150
• Bottom bracket: BB-R9100 (thread type), SM-BB92-41B (Press Fit)
• Chain: CN-M9100, CN-M8100, CN-M7100, CN-M6100
  

Weight (170 mm, manufacturer's specs):

• approx. 685 grams (50-34 teeth)
• approx. 692 grams (52-36 teeth)
• approx. 714 grams (54-40 teeth)