A vibration control system includes an outer housing, an inner housing carried within the outer housing, a fluid passage extending through the inner housing and in fluid communication with a first fluid reservoir and a second fluid reservoir on opposing sides of the inner housing, and a gas extraction system. The gas extraction system includes a gas reservoir in fluid communication with the first fluid reservoir, a removable cap secured to the outer housing, a lid removably attached to the cap, and a plurality of conduits extending through cap and lid and configured to provide fluid and gas communication between the first reservoir and the gas reservoir.