The present disclosure provides hydraulic dampening systems wherein the dampening effect may be controlled by rotating a body of the dampener, after the dampening system has been installed and in use. The system includes a piston including a front disk and back disk, wherein the front disk has a reduced diameter with respect to the back disk. A washer is positioned between the two piston disks, wherein the diameter of the washer is greater than the piston back disk, wherein the washer includes at least two protruding tabs. The washer is frictionally engaged with the body of the dampener. As the body is rotated, the washer is rotated such that the washer tabs engage at least a portion of the piston front disk to rotate the piston along a threaded surface of a shaft of the system.