Dura-Ace threaded BB
Shimano Dura-Ace BB-R9100 Threaded Bottom Bracket
Shimano's top-level threaded Hollowtech II bottom bracket, using small ball bearings and improved seals for low-drag, long-lasting running. The natural match for Dura-Ace R9200 cranks on threaded frames.
Highlights
Why we rate it
Smooth, light bearings
Small-diameter ball bearings save weight and spin freely once bedded in.
Better sealing
An updated seal design keeps water and grit out, which matters for winter and wet-weather riding.
Threaded reliability
Screw-in cups are quiet and easy to service compared with many press-fit systems.
Fits all 24mm Shimano road cranks
Works with Dura-Ace, Ultegra, 105 and GRX Hollowtech II cranksets.
Tech specs
Specification
Manufacturer specification. Details may change without notice.
Specification
- Model code
- BB-R9100
- Series
- Dura-Ace
- Type
- Threaded, Hollowtech II outboard bearings
- Shell
- 68mm English (BSA) or 70mm Italian
- Axle
- 24mm
- Weight
- 65g
- Compatible cranks
- FC-R9200, FC-R8100, FC-R7100, GRX Hollowtech II
- Install tool
- TL-FC24 or TL-FC34 (with TL-FC36 adaptor)
Ordering
Available from The Cycle Collective
Available to order through The Cycle Collective in Dorking. For availability, setup or advice, call 0203 148 6764 or email hello@thecyclecollective.cc.