Universal rear bumper kits have fully welded frames and include separate 1-1/4 Inch. OD mounting tubes, bumper supports and end caps that require welding for a custom fit to a variety of chassis widths. Narrow Rear Bumper Kit with bent main tube is built from 1-1/2 Inch OD x.065 Inch wall mild steel tubing and measures 43 Inch wide x 12-1/2 Inch tall with a 39 Inch wide fuel cell guard.