What is the purpose of the Billet Spherical Upper Control Arms Bushings?
The Sphericals are the final items that complete your suspension to full solid mount without adding additional bind. With the spherical bearing, your control arms and rear-end are able to move their entire range of motion and not bind. Since the uppers are angled, they inherently want to twist against the rear-end during up and down movement. The Spherical Bushings prevent this, allowing the control arms to move without binding against your housing.
