Abstract: A rear step bumper is provided for a vehicle. The bumper is roll-formed into a tubular shape and includes a top wall, a bottom wall, an inner wall, and an outer wall, and further includes ends and an intermediate section. The outer wall is sheared from the top wall and the bottom wall in the intermediate section, and also sheared transversely so as to form opposing panels, which opposing panels are bent toward the inner wall into engagement with the inner wall and secured to the inner wall. The opposing panels reinforce the tubular member in the intermediate section to maintain the structural integrity of the bumper, and further are integrally formed from material in the tubular member to facilitate manufacture and reduce costs. The method of manufacture is also disclosed.