Reversible fully mounted plow, "Non-Stop" hydraulic The Xcelsior DX-series consists of fully mounted reversible ploughs intended for big tractors and heavy duty ploughing. Modern clean design and quality manufacture are the main characteristics for the Xcelsior DX ploughs. The frame of the DX is a sturdy U-profile and the frame is built to a wedge form with increasing width as the forces increase forward in the plough.