Item # BBT-18
/ Tools / Crank & Bottom BracketBottom Bracket Tool – 8-Notch
The BBT-18 is a heavy duty, investment cast tool for installing and removing the following:
- Shimano® Octalink® right side bottom bracket cup with external notches
- Bontrager® ISIS Drive™ bottom bracket cups
- Front chainring lockring for Bosch® Gen 3 and Gen 4 e-bike systems and Specialized® Levo® Brose® e-bike systems
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BBT-18 Features
- 8 notches with an outside diameter of nominally 43.4mm
- The inside-to-inside width is approximately 38mm
- Each notch is approximately 3.9mm wide
- The hole in the center of the casting is 22.5mm, and will not fit over 30mm spindles
- Can be used with a 36mm crow foot (such as the TWB-36) or open-ended wrench
Product Fitment
Below is a filterable table of bottom bracket models the BBT-18 is compatible with. For a full list of tool compatibility, see our Bottom Bracket Tool Finder.
| Truvativ® | Threaded | ISIS Drive and Giga Pipe™ |
