The 6" Super Duty Radius Arm Systems include everything you need and more
including bullet proof radius arms made with 1" steel for optimal ground clearance compared to other drop bracket kits on the market, and gas or diesel specific coils that are made in America that will not sag. A dropped pitman arm and track bar relocation bracket are included in the 6" system to properly align the front axle after lifting.
To avoid stacking rear blocks or going too tall with a single block, Zone includes a 5" cast iron block with an integrated bump stop, and to achieve the additional lift for the 6" system a dual add-a-leaf kit is included. The block & AAL setup on the 6" system will reduce spring wrap, level the truck, and is also designed to shift the axle forward to ensure the tire stays centered in the rear wheel well.