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Are the Bottom Bracket diameters on mountain bike frames pretty universal? The BB on my bike 73mm and the BB cartridge works with a BSA24mm spindle. Can I use a BSA30mm BB on my bike or does that mean my bike is incompatible with BSA30mm Bottom brackets? Or do BSA30 BBs use smaller bearings to make room for the larger spindle? I currently have a 24mm Bottom Bracket, But I really want a RaceFace Atlas crankset which has a 30mm spindle.