Skyjacker 3 - 3.5 in. A - Arm kit includes everything required for a 100 bolt on installation includes value added extras Skyjacker A - Arms are made of high strength DOM (Drawn Over Mandrel) tubing to withstand extreme stresses loads with an additional 14 in. gusset plate stiffener welded in between the A - Arms for added rigidity strength. The A - Arms are designed to incorporate optimum pivot ball joints to allow for faster easier alignment and greaseable to increase life flexibility. Kit features torsion Bar Keys, front differential spacer kit. Includes rear blocks 2 rear Skyjacker shocks.