be longer or shorter than illustrated they terminate at the edge of sheet metal defining fenders 22 24 a line 26 is defined at this juncture portions 18 20 are conventionally attached to fenders 22 24 at juncture 26 a pair of spaced apart energy absorbing devices 28 30 are secured to the bumper beam 14 to complete the vehicle bumper assembly 10 the energy absorbing devices bias the bumper structure to a normal position as shown in the figures each energy absorbing device comprises a cylinder 32 which is detachably fastened to vehicle support structure 34 the structure 34 being a structural rail forming part of the vehicle framing a piston 36 is slidably received in the cylinder 32 the piston 36 is detachably fastened at the outer end 38 thereof to the bumper beam 14 as is common in the art means are provided within the cylinder 32 to absorb energy upon impact of the bumper which results in subsequent movement of the piston 36 into the cylinder 32 the energy absorbing means may be hydraulic pneumatic a compressible composition such as a springy plastic material or the like the specific type of energy absorbing device is not germane to the present invention the.