The BBT-18 is a heavy-duty, investment cast tool for installing and removing the following:

• Shimano Octalink right side bottom bracket cup with external notches
• Bontrager ISIS Drive bottom bracket cups
• Front chainring lockring for Bosch Gen 3 and Gen 4 e-bike systems and Specialized Levo Brose e-bike systems.

BBT-18 Features

• 8 notches with an outside diameter of nominally 43.4mm
• The inside-to-inside width is approximately 38mm
• Each notch is approximately 3.9mm wide
• The hole in the center of the casting is 22.5mm, and will not fit over 30mm spindles
• Can be used with a 36mm crowfoot (such as the TWB-36) or an open-ended wrench.

SKU# PT-BBT-18