My tc3 took some hard hits, xxx-s youve seen that too, but it depends on many variables of the hits. Like the angle, if you hit it with the whole side, its less likely to break, but if you hit it with a corner, there is more of a chance it will break. With my tc3, yes it has broken the last 2 race days, with the same part (right front a arm), but it races great, even on 3 wheels.