Brothers economy air management kit will get your air bag system off the ground. Kit includes a single 12v air compressor, 2 pneumatic paddle valves with a dual needle gauge, 2 gallon air tank, air tank pressure switch, air tank drain cock, 40ft of dot 1/4 airline and brass fittings. This kit will allow front a rear pressure changes on the fly. This kit does not include the air bag assemblies.