Tow Assist Over Load Air Bag Suspension With In Cab Management & Tank. Fits: 2007 – 2018 Chevy Silverado/GMC Sierra 1500 Trucks With 6 Lug Wheels Does Not Fit 2007 “classic” Models. Kit Includes: 2 – Standard 2500lb Air Springs Mounting Brackets With Hardware airmaxxx AM400 Pewter Air Compressor Dual Needle 200 psi Air Gauge Gauge Panel With Rocker Switch 1/4″npt Brass Valve 1/4″ D. Approved Air Line With Fittings And Schrader Valve 3 Gallon 6 Port Steel Air Tank Liquid Thread Lock Hose Line Cutter Tool. Want to upgrade your kit? Directly Bolts In To Factory Holes (only one small hole needs to be drilled to place air fill valve). Brackets Are Made In USA & Powder Coated Black. Replaces Factory Bump Stops Provides Up To 5000lbs Of Leveling Capacity. Never exceed more than truck manufacturers maximum load recommendations.