Shimano

Shimano Dura-Ace BB-R9100 Bottom Bracket — BSA Threaded 68mm, HOLLOWTECH II, Road, Black

The Shimano Dura-Ace BB-R9100 is a flagship BSA-threaded HOLLOWTECH II bottom bracket with a low-friction seal design that reduces drag for smooth, efficient pedaling.

Flagship Dura-Ace HOLLOWTECH II bottom bracket — genuine Shimano, brand new.

Will it fit? BSA English-threaded, 68mm shell, for HOLLOWTECH II 24mm spindle road cranks. Not for square-taper, BB30/PF30, or 86.5mm press-fit shells.

Key Specifications

Brand Shimano
Series Dura-Ace R9100
Model BB-R9100
MPN BB-R9100
UPC 689228858619
Type Bottom Bracket
Interface HOLLOWTECH II (24mm)
Thread BSA (1.37×24)
Shell 68mm
Seal Low-friction
Weight 65 g (2.3 oz)
Color Black
Country of Origin Japan
Condition Brand new — original Shimano packaging

Technology Highlights

  • ✓  Low-friction seals cut drag ~50% vs prior gen.
  • ✓  HOLLOWTECH II 24mm spindle fit.
  • ✓  BSA 68mm threaded standard.
  • ✓  Dura-Ace precision bearings.

What's in the Box

  • 1 × Shimano Dura-Ace BB-R9100 bottom bracket
  • Original Shimano packaging
Brand new in retail packaging. Ships from Ontario, California (US domestic) · Estimated delivery 3–5 business days · Free 30-day returns.
$40.99 USD
Regular price
Unit price
per

Pay in 4 interest-free installments of $133.12 with

Shimano Dura-Ace BB-R9100 Bottom Bracket — BSA Threaded 68mm, HOLLOWTECH II, Road, Black
$40.99 USD
Regular price
Unit price
per

Shimano Dura-Ace BB-R9100 Bottom Bracket — BSA Threaded 68mm, HOLLOWTECH II, Road, Black

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