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The Shimano Dura-Ace R9100 Bottom Bracket features smaller lightweight bearings and an advanced seal construction for smoother rotation and increased durability. It is designed to work in combination with the Dura-Ace R9100 crankset to offer optimum stiffness and a smoother pedal stroke.
Features
BB Shell Width: 68mm threaded BSA
Small bearings offer light weight
Advanced seal construction for smoother rotation
Bottom Bracket with small ball bearings for weight.
Advanced seal construction for smoother rotation.
Specifications:-
Weight: Approx 65g
Material: CroMo steel, aluminum
BB Shell Width: 68mm
