For bottom brackets 68 x 108mm translates to 68 bb shell width (standard)
and a 108mm spindle. The spindle determines chainline.
And with the rear triangle spacing, you'd need a 135mm hub, or whatever with spacers to fit.
Also chainline depends on your rear hub and bottom bracket spindle length.
So find a hub or wheelset before choosing cranks and bb.
Last edited by REMspeedwagon; 01-25-09 at 09:51 PM.