Shimano Dura Ace R9100 Hollowtech II Bottom Bracket

The Dura Ace R9100 is compatible with cranksets having a hollow 24mm spindle (like Andel Deluxe, Sugino 75 Direct Drive & DD2, etc.) and features advanced seal construction for smoother rotation and 39mm diameter aluminum cups for weight savings.

Installation using a standard 44mm diameter 16-notch outboard BB tool requires Shimano TL-FC24 tool adapter (sold separately).

Available with English or Italian threading.

 

Not compatible with Sram GXP cranksets, Miche Pistard Air or Pistard 2.0 cranksets.

Specifications

• 68mm English-threaded or 70mm Italian threaded

• compatible with all 24mm Hollowtech II-type cranksets

• sealed cartridge bearings

• aluminum cups w/plastic center sleeve

• use Park Tool BBT-19.2 for installation & removal (TL-FC24 cup adapter required)

• weight: 65g