Originally Posted by
topflightpro
This is not quite accurate.
In some cases, the crank arm will be flush to the frame. In some cases there will be a spacer. Some Sram BB30 cranks and some Hollowgram cranks, for example, will require a spacer. It depends on which model you get.
You made a real generic claim tfp. For veracity, you will have to be quite specific. Quite possible we aren't even talking about the same thing and speaking right past one another. All PF/BB30 bottom brackets are flush by design. Spacing the crank away from the frame may vary. Depends on the crank. Some 30mm long spindle cranks will be spaced well away from the frame like Rotor with a regular PF30 BB with bearings within the shell.