Works on 14 bolt single rear wheel axle;51-1/4 inch long;Made from 3/8 inch and 1/4 inch mild steel;Strengthens axle and link mounting surface;Reinforced using interlocked 1/4 inch gussets;Includes Truss, Pinion Guard and Bridge; California Residents: WARNING This heavy duty truss system is designed to take serious abuse and reinforce your entire axle while also providing a flat surface to mount your upper links. The 3/8 thick truss top and 1/4 thick gussets incorporates a unique design to strengthen both the axle and the link mounting surface. Truss is low profile allowing link joints to be mounted with ideal geometry, about 8 inches from the axle centerline. Truss spans entire length of axle for complete reinforcement of the axle tubes, not just for mounting links. The SRW truss is just under 51 1/4. This kit includes the Artec Industries 14 bolt Pinion Guard and Bridge is designed to keep your vulnerable pinion out of the rocks and in one piece. CNC cut from 3/8 thick mild steel, this guard is meant to take the worst you and the rocks can dish out. This kit requires general welding and fabrication skills.