Threaded Road Angular Contact BB

This bottom bracket is designed for frames with a standard BSA (English) threaded shell that is 68mm wide. It is compatible with road bikes using 24mm spindle cranks, such as Shimano HollowTech II systems.

Angular contact bearings are designed to handle both radial and axial loads simultaneously. This makes them more durable and smoother under the specific side-loading forces generated while pedaling, resulting in a more efficient ride.

Yes, the design is fully serviceable. You can easily remove, clean, and re-grease the bearings to extend the life of the component, which is a significant advantage over press-fit or sealed-cartridge systems that often require full replacement.

The unit features high-quality silicone seals that provide a robust barrier against water, grit, and road grime. While no bearing is completely impervious to the elements, these seals are specifically engineered to keep contaminants out and grease in.

You will need a standard external bottom bracket tool compatible with the 16-notch pattern used on most threaded external bearing cups. If you have a standard Shimano-style BB tool, it will work perfectly with this unit.