Air Jack Kit - 11.75 in Lift - 2400 lb Max - Aluminum - Kit. Raise your car in seconds! The Allstar Air Jack system connects to your race car with included weld-on mounting rings or with ALL11305 bolt-on mount kit (sold separately) for simplified installation. Works with a nitrogen tank, requires a hi-pressure regulator and a minimum 400 PSI hose. System will support vehicles up to 3000 lbs. Dirt foot system includes lift cylinders with a large 5" base designed for use in dirt or soft pit areas.