A vehicle bumper system having a mounting bracket disposed between a vehicle frame and a bumper having angulated walls. The angulated walls are disposed at selected cross-sectional elevations, to avoid parallelograming under impact and provide maximum energy absorption. The mounting bracket includes a first surface and a second surface. The first surface of mounting bracket is adapted to be secured to the vehicle frame. The second surface of the mounting bracket is adapted to be secured to the bumper. The walls of the mounting bracket absorb an impact to the bumper.