Official Shimano Bottom Bracket for use with the 9100 and 9150 Dura Ace drivetrains.

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: 68/70mm 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/70mm

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