Went for first ride after changing all the bushings, a wheel bearing, an axle, all the fluids and the air filters. Going down a paved road at 35-40 mph and the rear wheels locked up, went sideways the flipped and skidded down the road 30 feet. I managed to stay in and ride it out. A couple people stopped and helped flip it over back over. The right side now has some road rash. It starts up but won't move under power. In neutral it towed fine. Not sure what the he'll happened. Did the belt brake or what?