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Tools & Maintenance Bottom Bracket, Cassette, & Cog Tools

Park Tool BBT-47-12 Bottom Bracket Tool

The BBT-47.12 from Park is 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 & ThreadFit™ 30 bottom brackets. This crucial shop quality tool is manufactured in-house by Park Tool, anodized for easy identification and features a ratchet/torque wrench-compatible 3/8" drive.


  • Precision CNC-machined aluminum bottom bracket tool for specified designs
  • Designed for use with 3/8" drive ratchet/torque wrench
  • Fits 12-notch bottom bracket tool fittings with a major diameter of 50–53 mm and a minor diameter of 48.2 mm
  • Compatible with:
    • BB Infinite T47
    • Chris King ThreadFit T47
    • Chris King ThreadFit 30
    • Enduro BBRight Torqtite
    • Hambini T47
    • Rotor T47 External 30mm
    • Rotor BBright, BB30, BB386EVO, and PF30 thread-together
  • Color: Anodized Blue
  • Made in USA