This heavy duty and light weight truss system is designed to take serious abuse and reinforce your front HIGH PINION 30 XJ axle. The 1/4" thick truss top and 10 ga. gusseting incorporates a unique design to strengthen both axle tubes, not just the long tube. The precision cut and formed components of this setup ensure a hassle-free installation. Not only is this just a truss, but you also get a COMPLETE POLYURETHANE BUSHING REPLACEMENT for your upper control arms, or you can even upgrade to Currie Johnny Joints.