2005-2020 Ford F250/350/450/550 4WD Only. Front 1.5" Leveling Kit. PN RTX55104. The Ford Super Duty trucks are big, tough trucks that allows you to tow, haul and go just about anywhere. The RTX Off Road 1.5" front leveling kit for 2005-20194WD F250/F350/F450 Super Duty trucks has been designed to amplify the usefulness of your Super Duty truck by increasing tire clearance. Allows for up to a 35" tall off road tire. The RTX55104 1.5" front leveling kit is unique in its design. Rather than fitting on top of your factory coil spring like our 2.5" leveling kit does, this 1.5" CNC machined billet aluminum spacer fits at the bottom of the spring where it attaches to the axle pad. A new longer bolt is provided for installation. The RTX Off Road 1.5" lower coil spring spacer is the best constructed, best value Ford Super Duty leveling kit on the market. Our high-quality hammertone powdercoated finish guarantees a lifetime of protection against any elements. The RTX55104 1.5" leveling kit is what you need to get the job done safely without having to break the bank. No cutting. No modifying. Easy Installation - even a caveman could do it in less than two hours!