A vehicle includes a seat frame rail, a pair of spaced reaction surfaces and an energy management system. The energy management system includes a lateral bar and a spacer. The lateral bar extends along a bar axis, between a pair of ends. The lateral bar is disposed between the reaction surfaces, such that each end of the lateral bar is in facing relationship with a respective reaction surface and the spacer is operatively disposed between the lateral bar and the seat frame rail. The lateral bar is operable to be displaced toward the seat frame rail when compressed between the reaction surfaces, along the bar axis. The spacer is operable to react against the lateral bar and the seat frame rail to transfer loads therebetween, such that the displacement of the lateral bar is resisted by the seat frame rail.