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Ultegra 600 bottom bracket(2 posts)

Ultegra 600 bottom bracketKeenkat
Jun 4, 2001 5:57 PM
Can anyone tell me what replacement to order in place of the current BB? There are 4-5 sizes under ultegra bottom bracket?
re: The sure way.....Rusty Coggs
Jun 4, 2001 6:53 PM
...measure yours,end of taper to end of taper.There were several lengths depending on vintage. Get correct threadng. Your cups should be marked. English is 1.37x24 TPI,Italian is 36x24TPI. Not too likely its French or Swiss.English shell width is 68mm,Italian is 70mm.