That's weird we have only broken 1 rear arm since Dec. I switched to the ti pivot balls and have'nt bent them or the steel ones and my car has been really slammed!!!!!!!! I have bent the chassis though its like earlier reported it will bend in the engine mt. area. I think Ae has cut to much mat. out for the pullstart version. Just got the GH Chassis and it looks very sweet!!!!! Don't care much about the harden alum color but should be very rigid. Anybody else worked with the chassis? If so how much setup change?