airmaxxx Tow Assist Air Over Load Kit w/ In-Cab Control & Steel Tank – Fits 2007-2018 Silverado/Sierra 1500 

Heavy-Duty Load Support with Onboard Air Management

Upgrade your suspension with the airmaxxx Tow Assist Air Over Load Kit, designed for 2007–2018 Chevy Silverado 1500 trucks. This complete rear air helper spring system delivers up to 5,000 lbs of adjustable load leveling capacity, keeping your truck stable and level when towing or hauling heavy loads.

With the included AM400 pewter compressor, 3-gallon steel tank, and dual-needle gauge, you’ll have full in-cab control to independently adjust and monitor both air springs. Installation is 100% bolt-on — no drilling or welding required — with brackets that mount directly in place of your factory bump stops.

Key Features

• Up to 5,000 lbs Load Support – Reduces sag, sway, and bottoming out under load

• Fits 2007–2018 Silverado/Sierra 1500
  (2WD/4WD)

• Complete Onboard Air Management – Compressor, tank, valves, fittings & dual gauge included

• In-Cab Control – Independently adjust and monitor both air springs from inside the cab

• Bolt-On Installation – No drilling or welding required; installs in factory locations

Kit Includes

• (2) airmaxxx 2500 lb air springs

• Upper & lower mounting brackets with hardware

• (1) 3-gallon steel air tank

• (1) airmaxxx AM400 pewter compressor

• (1) 1/4" stainless braided leader hose

• (1) 1/4"NPT check valve

• (2) airmaxxx 1/4"NPT brass air suspension valves

• (1) premium 40 amp relay

• (1) 25ft roll of 1/4" DOT-approved air hose

• (1) 200 PSI dual-needle air gauge & mounting bracket

• Fittings and hardware for installation

⚠️ Load Capacity Note: Provides up to 5,000 lbs leveling support. Never exceed your truck manufacturer’s maximum load rating.

Compatibility

• 2007–2018 Chevy Silverado 1500
  (2WD & 4WD)

• 2007–2018 GMC Sierra 1500
  (2WD & 4WD)