the arms were designed for show not go... i seen a few guys get them and the first day after a few wrecks they were bent.... big ol waste of money...... i belive they are 6065 aluminum which is soft... and bends.. 7075 wich is the good stuff is strang but they snap and break... if this is for a how car go for it, would make a nice touch.. but if this is for a race car dont waste the money.. u will be sorry u did....u could get some good stuff for that money instead...
any aluminum suspension part that hangs of the chassis will bend or break... plastic and composite actually have a bit of flex which helps in an impact.....
stiff aluminum arm in a big wreck not only damages the arm.. but the hinge pin. and posibly the arm mounts.. so u arent just out arms u are out more...