A shock absorbing support arm assembly for a litter support assembly that includes a support arm comprising a first end and a second end opposite the first end, a shock absorbing device disposed at the second end of the support arm, and a litter side shaft engagement mechanism disposed at the first end of the support arm. The support arm assembly may also comprise a mounting bracket connected at the second end of the support arm such that the shock absorbing device is positioned between the mounting bracket and the support arm. The support arm may move along an axis of the shock absorbing device and relative to the mounting bracket and may pivot about the axis relative to the mounting bracket.