Abstract: An apparatus including a primary support tube mounting a trailer post pivotally thereon. A leaf spring pivotally mounted within the trailer mounting post is directed rearwardly of the primary support tube and mounted to a spring shackle adjacent an upper terminal end of the primary support tube. The trailer mounting post includes spaced parallel top and bottom walls including "U" shaped wall terminal ends to pivotally receive the forward end of the spring therewithin and permit pivotment of the trailer mounting post relative to the primary support tube to dampen vibration transmitted through the primary support tube to an associated trailer.