The control arms bend fairly easily. They are designed to give so the damage to other suspension parts or the frame wont be so major.
Hitting a curb could bend one, so you wouldn't even have to be going that fast.
The nice part is control arms from 93-01 Imprezas are exactly the same as the Legacy, and you can find a used one for $30.
Last edited by Bdubs; 10-21-2012 at 06:56 PM..