The 66-19180 includes heavy-duty laser-cut powder-coated steel front top mount coil spring spacers providing the ideal 1.75" of front leveling lift. It is that simple to level the front of these new RAM 4WD 2500/3500 HD trucks. New kits include a retention bolt has been added to lock the spacer to the frame and shock extensions have been added to optimize shock length after leveling the truck.