Rear Progressive Leaf Spring Kit 2003-09 RAM 2500/3500 Diesel 2 Lift Carli SuspensionCarli two stage progressive rate leaf springs deliver the optimal balance between cargo capacity and ride quality to ensure you get the most out of your truck. These full length packs are built by Deaver Spring to Carli's precise specs. Features and Benefits: 2 inch rear lift maintains slight rear height stance with Carli 3 inch Systems Softens initial spring rate at ride height Minimizes axle wrap wheel hop Reduces payload to light 3 4 ton capacity