Maximum Motorsports Heavy-Duty series Rear Lower Control Arms for the 1979-1998 Mustang improve traction and handling by reducing the unwanted deflection allowed by the stock soft rubber bushings and flexible stamped steel control arm. Adjustable-height spring perch allows raising or lowering the rear ride height of your Mustang. Unique MM 3-piece bushing and spherical bearing design easily allows the articulation required for proper handling, and reduces the deflection that can cause wheel hop.