Park Tool BBT-69.4 — 16-Notch Bottom Bracket / Lockring Tool

The BBT-69.4 is a precision CNC-machined aluminum tool designed for the installation and removal of select components with 16-notch tool fittings, including bottom brackets, center lock disc brake rotor lockrings, and e-bike motor lockrings. Manufactured in-house by Park Tool and anodized for easy identification, it features a 3/8" drive compatible with ratchets or torque wrenches for precise control.

Engineered for full compatibility with the Park Tool BBT-RS Bottom Bracket Tool Retaining System (sold separately), the tool ensures consistent engagement through an adjustable spring-based tension system that prevents slippage during use.

Features

• Compatibility:

  • 16-notch tool fittings with:

    • Major diameter (outside of notches): 44–45 mm

    • Minor diameter (inside of notches): 42.7 mm

  • Shimano® BB80, BB5700, XT® BB70, BB51, and earlier external bearing threaded bottom bracket cups

  • Campagnolo®, Chris King®, FSA® MegaExo®, Hope™, SRAM®/Truvativ® GXP®, Race Face® X-type, Surly®, Wheels®, Fulcrum® threaded bottom bracket cups

  • Center lock disc brake rotor lockrings

  • Bafang® BBSH and BBS02 mid-drive motor lockrings

• Construction: CNC-machined aluminum with anodized finish

• Drive: 3/8" ratchet or torque wrench compatible

• BBT-RS Compatible: Integrated threads for Park Tool BBT-RS Bottom Bracket Tool Retaining System

• Note: Not designed for use with impact drivers or other power tools