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 requires general welding and fabrication skills. This product ships in approximately 1 days