4 Inch Lift Kit 69-72 Chevy Truck 4x4 K10/K20/GMC Truck 4x4 K10/K20/Suburban 4x4/Blazer 4x4/Jimmy Heavy Duty Fits Models w/52 Inch long Rear Springs Tuff CountryTuff Country Heavy Duty Suspension's suspension lift kits are more than your average lift kit. All systems are engineered to give the highest quality and best value on the market. All Tuff Country lift kits and leveling kits are backed by a limited lifetime warranty. Replace your front and rear springs with the superior ride of the Tuff Country leaf springs. Each spring is tapered, snub rolled and pre set for the most comfortable ride available in a