Our best solution for replacing OEM PF30 bottom brackets or for new bike builds. The two machined aluminum cups thread together ensuring the bottom bracket remains stable in the frame, increasing bearing life, and simplifying maintenance. This means no more creaking, smoother operation, longer bearing life, and really quick bearing replacement.
Compatible with the following Bottom Bracket Standards (46mm BB shell inner diameter):
Compatible with 30mm spindle diameter cranksets.
* Specialized Carbon OSBB with 61mm shell width will need additional 3.5mm cup spacers.