Zone says this kit is built for everyday driving but is designed to withstand off-road abuse. The kit has one-piece main crossmembers in combination with CNC-machined ductile steering knuckles that match the OE geometry for excellent ride and handling. It has a differential skidplate and compression struts that offer off-road protection for serious trails. It comes complete with torsion bar brackets, differential drop brackets, CV spacers, sway bar links, rear blocks, U-bolts, and four twin-tube hydraulic shocks. It allows you to fit 35-inch tires under your truck.