AST Suspension Air Jack Lift System 55mm Stroke 233mmLift your car in seconds without a heavy floor jack to haul around! AST Air Jacks are invaluable upgrades that allow for easy track side maintenance and tyre changes! Suitable for all types of motorsports such as drifting, time attack, GT racing, etc. Price is per air jack. The AST Suspension Air Jack System works with an air jack valve and lance, nitrogen tank, and requires a high pressure regulator and a minimum 400 PSI hose. Sold Separately.