you just have to buy a normal BB (square taper, octolink, hollowtech etc).
you can buy the shells and eccentric bb's from framebuilders supplies but fitting the larger shell into an existing frame is a lot of work as there are 4 tubes to mitre and get straight, you are better off building from scratch or just buying an OTP EBB frame.
you just have to buy a normal BB (square taper, octolink, hollowtech etc).
you can buy the shells and eccentric bb's from framebuilders supplies but fitting the larger shell into an existing frame is a lot of work as there are 4 tubes to mitre and get straight, you are better off building from scratch or just buying an OTP EBB frame.