The Barnes 4WD Pro Series Jeep JK Dana 44 Front Axle Truss is made from a combination of 1/4" and 3/16" steel to keep them light but incredibly strong. This truss is made to be a precise fit to the Jeep JK Front Dana 44 Rubicon. These trusses are made to span the full length of your housing to prevent bent or broken axle tubes.