fsa alpha drive

samhiggins

hi i was wondering what size bottom bracket i would need for these to fit my bike. i know i have a 68mm bb shell but dont know the other size- e.g 68x110, 68x113, 68x118 . i need the last number please.

supersonic

What bike? What was the old BB? For a standard 47.5mm chainline, the square taper needs a 110.5mm BB.