The MOR/ryde pin box system utilizes a unique rubber shear spring to positively deal with this rough, towing road shock. The rubber spring works in a horizontal planar motion (in a longitudinal and lateral motion) to absorb the towing shock. This allows the MOR/ryde pin box system to effectively diminish the transfer of forces from the trailer to the truck. The MOR/ryde pin box system can be installed on most fifth wheel trailers. Installation is bolt-on and typically takes about one hour.