1955-59 Chevyand GMC Truck coil-over 4-link rear suspension provides the best ride for any Classic truck. These 4-link kits attach directly to the stock frame rails and the adjustable axle brackets let you set the height in one of three positions. A bolt-in upper coil-over crossmember is included. All brackets are made from 1018 mild steel.4-link bars are double adjustable and made from DOM tubing. The double ajustable feature not only allows for precise rear end positioning, andallows you to adjust your pinion angle as well. Lowers your truck 4-6″