Hi guys, I have a pair of g4 tan non blackriver edition on my blackrivers... they roll fine and was wondering what non brr edition means and why do they roll good.

if the opening on the backside of the wheel is too small, it might get stuck on the truck. for some other non BRR ed. wheels, most likely dual bearing wheels, the axle on BRTs is too short.
But in most cases it works anyway with a little bit tuning.