The Park Tool BBT-79.3 Bottom Bracket Tool, click to enlarge
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Item # BBT-79.3

/ Tools / Crank & Bottom Bracket

Bottom Bracket Tool — 12-Notch

A precision CNC-machined aluminum tool for the installation and removal of select threaded bottom brackets with 12-notch tool fittings, including SRAM® BSA DUB®, Race Face® Cinch®, Rotor® BSA30, and others. Manufactured in-house by Park Tool, anodized for easy identification and featuring a ratchet/torque wrench-compatible 3/8" drive.

The BBT-79.3 features integrated threads for full compatibility with the Park Tool BBT-RS Bottom Bracket Tool Retaining System (sold separately). The BBT-RS uses an adjustable spring-based tension system to apply consistent, adjustable pressure to the tool, ensuring full engagement with the tool fitting and preventing slippage.

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BBT-79.3 Features

Fits 12-notch threaded bottom bracket tool fittings with a major diameter (outside of notches) of 45–47 mm and a minor diameter (inside of notches) of 44 mm, including:

  • Race Face® Cinch®
  • Rotor® BSA30
  • Zipp® Vuma™
  • Hawk Racing™ BB3086™
  • and more

Not designed for use with impact drivers or other power tools.

Product Fitment

Below is a filterable table of bottom bracket models the BBT-79.3 is compatible with. For a full list of tool compatibility, see our Bottom Bracket Tool Finder.

C-Bear® Threaded BSA/ITA 30mm and DUB®
Cane Creek® Threaded & Thread-Together All Models Except T47 Internal
CeramicSpeed® Thread-Together BB30 DUB®
CeramicSpeed® Threaded BSA Threaded DUB® and 30mm
CeramicSpeed® Threaded Italian Threaded DUB® and 30mm
CeramicSpeed® Threaded T47/68 DUB® and 30mm
Easton® Threaded Cinch®
Enduro® Threaded BSA and Italian Threaded 30mm and DUB®
Hawk Racing™ Threaded BSA DUB®
Hawk Racing™ Threaded BSA30
Kogel™ Threaded BSA DUB®
Kogel™ Threaded BSA30
Kogel™ Threaded T47 Outboard DUB® and 30mm
Race Face® Threaded BSA 30mm
Rotor® Threaded BSA30
Rotor® Threaded T47 External 30mm
Rotor® Thread-Together UBB 4630 BBright™
SRAM® Threaded BSA and Italian Threaded DUB®
Token® Thread-Together BB29BSA
Token® Thread-Together BB42A29
Token® Thread-Together BB46A29
Token® Thread-Together BB4229
Token® Thread-Together BB4629
White Industries™ Threaded BBE29BSA
White Industries™ Thread-Together BBE29PF30
White Industries™ Threaded BBE29T47
White Industries™ Threaded BBE30BSA
White Industries™ Thread-Together BBE30PF30
White Industries™ Threaded BBE30T47
Zipp® Threaded VumaQuad™

Parts & Accessories


Bottom Bracket Tool Retaining System

BBT-79.3 Bottom Bracket Tool — 12-Notch 46 mm