Park Tool BBT-9 — 16-Notch Bottom Bracket & Crank Cap Tool (44 mm OD)

The BBT-9 is a versatile, dual-purpose tool designed for removing and installing external bearing bottom brackets as well as Shimano® Hollowtech II® crank arm adjustment caps. One end engages the 16 external notches of bottom bracket cups, while the other end fits the 8 internal splines of Hollowtech II crank arm caps. Ideal for professional and home mechanics, this tool also works with disc brake rotor lockrings and mid-drive e-bike motor lockrings.

Features

• 16-notch 44 mm OD cups for external bearing bottom brackets

• 8-point internal spline for Shimano® Hollowtech II® crank arm adjustment caps

• Compatible with bottom brackets from:

  • Shimano® BB80, BB5700, XT® BB70, BB51, and previous external bearing threaded cups

  • Campagnolo®, Chris King®, FSA® MegaExo®, SRAM®/Truvativ® GXP®, Race Face® X-type, Surly®, Wheels®, Fulcrum®, Hope™ (non-BSA30)

• 16-notch applications:

  • Disc brake rotor lockrings

  • Bafang® BBSH and BBS02 mid-drive motor lockrings

• Dual-purpose design: Combines bottom bracket cup tool and crank cap tool in one

• Construction: Plated steel handle with vinyl-dipped grip for comfort and leverage

Repair Help / Applications

• Bottom Bracket Removal & Installation: Threaded

• Bottom Bracket Tool Selection: Threaded and Thread-Together

• Disc Brake Rotor Removal & Installation

• Crank Removal and Installation: Two-Piece Compression Slotted

• SRAM® HammerSchmidt™ Crankset Installation