Super duty High Steer Arm Kit. Artec Industries is excited to announce our new high steer arm For 05-12 Ford Super duty F-250 and F-350 trucks. This high steer arm is For use with the aftermarket Reid Racing Super duty knuckle available. Together, this arm and knuckle allow the user to correct steering problems that are common on lifted Super dutys. This is a passenger side arm only. Driver side not available. Reid Racing does not currently make a driver side knuckle. Features: