ASR uses U.S.A. made 6061-T6 grade aluminum to manufacture the lower control arm. This material is chosen for its malleable properties. It is similar to the material used on high performance racing wheels for its forgiving characteristics during impact. The unique recessed bushing prevents dust intrusion and offers a sleeker look. In addition, the precisely relocated end link mounting holes not only allows for multiple swaybar and end link combinations, but keeps the swaybar arm in optimum geometry.