Prime's threaded bb is a high quality bottom bracket designed for use with all sram dub cranksets with a 29mm axle diameter. Precision made for durability and smoothness prime bottom brackets keep your bike running smoother for longer.

The prime bb86 bottom bracket features the best materials available to make it super tough. Using a combination of fibre and plastic, we were able to precisely machine the shell, so that it fits perfectly in the frame, and eliminates any noise

When bearings have to be pressed directly into the frame, it is of the upmost importance that the bearings are of the highest quality the bearings in this prime bb30 bottom bracket are exactly that.