1pc
i see all the bikes have them now, but I have a one piece sugino cro-mo crank for
ramp, ground, racing, freestyle, i never had an issue with it,
i 'd say ride it (the one pc) til you break it, unless you like spending money.
-the crank is on my 1984 haro sport, and before that was on my patterson bmx. those cranks are one of the few things that never was replaced. i still own the bike and ride it.