SHIMANO Dura-Ace FC-R9100 Crankset Left Crank Arm
It does this through a broad Hollowtech II arm which sets the highest standards for stiffness and lightness.
Spindle Interface Type: Hollowtech II
The following are a “B” match which indicates that the parts are usable, but differ in materials, appearance, finish, size etc.
-FC-9000
Original Shimano parts guarantee that all components work perfectly for optimum performance and maximum safety and longevity.