The Park Tool BBT-47-12 Bottom Bracket Tool — 12-Notch, click to enlarge
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Item # BBT-47-12

/ 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 Chris King® ThreadFit™ T47 and ThreadFit™ 30 bottom brackets. Manufactured in-house by Park Tool, anodized for easy identification and featuring a ratchet/torque wrench-compatible 3/8" drive.

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BBT-47-12 Features

Fits 12-notch threaded bottom bracket tool fittings with a major diameter (outside of notches) of 50–53 mm and a minor diameter (inside of notches) of 48.2 mm, including:

  • BBInfinite® T47
  • Chris King® ThreadFit™ T47
  • Chris King® ThreadFit™ 30
  • Hambini T47
  • Rotor® T47 External 30 mm
  • Rotor® BBright®, BB30, BB386EVO, and PF30 thread-together

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

Product Fitment

Below is a filterable table of bottom bracket models the BBT-47-12 is compatible with. For a full list of tool compatibility, see our Bottom Bracket Tool Finder.

BBInfinite™ Threaded T47 External
BBInfinite™ Threaded T47 Internal
Chris King® Threaded T47 30i, 24i, 30x, 24x, and ThreadFit™ 30
Hambini™ Threaded T47
Rotor® Thread-Together BB30, PF30, and BB386EVO™
Rotor® Threaded T47 Internal 30mm
Rotor® Thread-Together UBB 4630 BBright™

Parts & Accessories


Bottom Bracket Tool Retaining System

BBT-47-12 Bottom Bracket Tool