Originally Posted by
MuddKatt
Will the size of the bb be written on the bb?
The threading will certainly be English/ISO. I'm not sure if you have a 68 mm wide bottom bracket shell (most likely) or a 73 mm shell so measure that and choose a bb accordingly. You will have to measure the spindle length end to end (not including the threaded stubs if it's a nutted bottom bracket) and try to get close to that dimension if you want to keep the same crank.