Pro Comp Suspension’s Double XX Coil Over Conversion 6” and 8” lift systems multiply damping control with 4 massive MX2.75 CR Coil Over Shocks. These high end systems offer superior heat dissipation and fade resistance to produce unmatched comfort and road handling ability. Rigid custom shock towers, hoops and CNC machined billet lower mounts allow easy installation of the four coil over front shocks and their remote reservoirs. Stout tubular and boxed construction radius arms locate the axle and provide proper caster specifications. Rugged reinforced extensions keep the bump stops in the right location for optimum suspension travel. MX6R adjustable reservoir rear shocks combined with replacement rear leaf packs enhance load control and dual steering stabilizers eliminate steering wheel shimmy. Take advantage of Pro Comp Suspension’s outstanding Double XX suspension system for maximum control and visual impact. By far the most complete Super Duty suspension package available.