Racing Shock Maintenance - Shocking Performance Photo Gallery
This cutaway shows the inner workings of a monotube shock. The chamber to the left contains pressurized gas and is separated from the shock oil by a piston. The shock piston holding the valves is shown in the main body of the shock at the end of the shock rod. Twin-tube shocks have a gas bag that compresses when the shaft moves into the shock body and displaces the shock fluid to control cavitation.