- Bottom bracket choices: I am an advocate for the frame having the most common bottom bracket. I prefer only BSA or DUB. Reasons being. If you get the bug and start riding existing 500+ mile rides, you will find that the route organizers just love to put in a lot of creek and river crossings. This means that your bottom bracket will get soaked numerous times. If your bottom bracket locks up, gets loose or squeaks, you will be glad you chose the most common BB standard that a remote bike shop might carry.
Bsa is a frame to bottom bracket interface standard, and dub is a bottom bracket to axle interface standard.
It is possible to have a BSA DUB bottom bracket.
I would say that BSA with 24 mm (hollow tech 2) is one of the most widespread BB if that's what you wanted to say.