The BBT-90.3 is designed to install and remove the bearings and bearing cups used in most press-fit bottom bracket systems that feature a 22 or 24-mm spindle, including many Shimano press fit, and SRAM GXP press fit. The included bearing remover tool installs through the shell to easily drive out bearings.

The BBT-90.3 also includes a set of bushings that can be used in conjunction with a cup press (such as the HHP-2 or HHP-3 sold separately) to quickly and precisely press new bearings into the bottom bracket shell.