Made out of 2x3x.083" wall mild steel tubing. Uses the same rear suspension as our Eliminator II chassis kits. Box tube construction makes it the perfect choice for the "fast street car" classes or Pro Street cars. The 1-1/2" dropped crossmember mounts the 4-link brackets 4-1/2" off the ground and the rocker panels at 6". Kit includes a pair of frame rails; two 4-link crossmembers; upper shock mount crossmember; upper shock mount tabs; rear crossmember; 1-1/4" frame gusset tubes; hardware; instructions and drawing. Shipped unassembled by UPS. Note: main hoop and cage rear struts are not included, they are part of the roll cage kit.