MrPat is correct... That handle is a scrub brake for both rear wheels. Has a round tubular piece that runs from the front forks, down under the seat, to the rear section.. Looks all stock to me, and not something someone modified or made .. All the welds look factory, nothing broke, etc.
I agree with Markus. May not have been produced very long.. and I am wondering if that is due to the steering. The front forks will turn about 95 degrees to the left and right, and they may have determined that to be dangerous. A small child, going 25 mph, and quickly whipping the wheel one way or the other, would most likely send this thing end over end. :doah:
I have a solution for that though. I will be adding some 1" bumpers in behind the steering connection, the keep the turning radius reasonable.
I will get more pics up soon..