Air Helper Kit Bolt On With On Board Air Control. Will Not Fit Trucks With Rear Sway Bar. 2 – Standard 2500lb Air Springs. Bag Mounting Brackets With Hardware. Airmaxxx AM400 Pewter Air Compressor. 1/4 Stainless Steel Braided Leader Hose. 1/4NPT Check Valve. 2 – 1/4NPT AirMaxxx Brass Air Valve. Premium 40 Amp Relay 15′ Roll of 1/4 Air Hose. 200 PSI Dual Needle Air Gauge with Mounting Bracket. Air Hose Fitting Kit. 12 Volt Electric Valve Control Switch. 3 Gallon 6 Port Air Tank. To secure your 400 compressor to something solid. Replaces Factory Bumpstops (requires light trimming of upper bump stop mount to install) Provides Up To 5000lbs Of Leveling Capacity. AirMaxxx Tow Assist Convenience Package in Cab Air Control on Board Air Management Allows in-cab air pressure control to your tow helper/load assist kit or single zone air bag system. Durable compressor included quickly fills air directly to bags with a simple push of a switch. Have a train horn? This kit will include what you need to plumb it in as well. Need to fill a tire or run an air tool? This kit will do just that. No specialty tools are required for install. Never exceed more than truck manufacturers maximum load recommendations.