ReadyLIFT 1.5" Add-A-Leaf for the rear of 2004-2014 Ford F150 trucks. Heavy Duty steel - the same construction as the factory rear springs - these rear add-a-leafs insert into your existing rear spring pack to provide an additional 1.5" of rear lift. Ideal for when additional rear lift is required. Works well by itself or when teamed with a pair of ReadyLIFT rear lift blocks. Create more rake with the addition of this 4" tall rear block kit. Ideal for when more rear lift is required for towing or hauling. Adds an additional 1.5" of rear lift.