Bicycle bottom brackets occasionally require removal for service, replacement, or upgrading. The Park Tool BBT-9 is used to remove and install select threaded bottom brackets with 16-notch tool fittings, including Shimano®, SRAM® GXP, Chris King®, Campagnolo®, and many others. This tool fitting is also found on some disc brake rotor lockrings.

Additionally, the BBT-9 includes a tool that removes and installation of 8-point Shimano Hollowtech II crank arm adjusting caps. The long, plated-steel handle offers good leverage for high-torque applications and is vinyl-dipped for comfort.