<p>Shock absorbing device (1) has an adaptor body (6) arranged between impact element (5) and vehicle frame (4). Adaptor has thickness (7) over which the position of the cross beam (2) can be forced relative to the bumper shell (3) over a resulting gap (8). The adaptor body has a ribbed structure to make possible power consumption through deformation in adaptor body in case of a collision.</p>