Abstract: An adjustable bumper for mounting in a horizontally oriented non-round recess of a vehicle mount receiver so as to facilitate the pushing of one vehicle with another. The bumper has a straight leg adapter portion for engaging with the mount receiver, a cross-bar portion secured at a right angle to the adapter, and an elongate cylindrical roller held within the cross-bar portion between two laterally extended end arms. The adapter portion includes positioning apertures that allow the distance between the roller and the vehicle to be adjusted and the cross-bar portion has similar positioning apertures that allow the height of the roller to be adjusted.