The rear lower control arms come in three flavors. The top is what is used on a more factory-type suspension upgrade and has provisions to attach a sway bar. The lower bar is what we’re using and has the sway bar mounts deleted. The billet bar in the middle adds more “cool factor” to the equation and runs a few more bucks than the standard piece. Our arm uses a spherical bearing on the frame side, which allows it to pivot without binding. The rearend side has a Del-a-lum bushing.