An off-highway truck body comprising a plurality of tube-style support members, wherein each tube-style support member comprises one or two pieces of square tubing, wherein the truck body comprises two sidewalls, a floor, a front wall and a canopy, and wherein one side of each tube-style support member is welded to the outside of the sidewall, floor, front wall or canopy. The pieces of square tubing are preferably comprised of steel. The present invention optionally comprises a forward wedged front wall and a side-sloped canopy.