MILLISEC Rear Air Helper Spring Kit for RAM 1500 (2011–2018) — Adjustable 5–50 psi, 2,100 lb Load-Leveling

MILLISEC Rear Air Helper Spring Bag Suspension Kit upgrades RAM 1500 rear support with adjustable air springs that provide up to 2,100 lb of load-leveling assistance.

This kit is a vehicle-specific rear air helper spring solution engineered for Dodge and RAM 1500 pickups from 2009–2024 model ranges specified (2011–2018 primary). It bolts in using supplied hardware and brackets to help maintain ride height, stabilize heavy or uneven loads, and improve handling when towing or hauling. The system is air-adjustable from about 5 to 50 psi so you can fine-tune firmness based on load weight and driving conditions.

How will this kit change towing and hauling on my RAM 1500?

Adding the MILLISEC air helper springs reduces rear sag under load, redistributes weight more evenly across the axle, and helps keep headlights and suspension geometry closer to factory angles. That makes braking more predictable and decreases tire uneven wear from constant heavy loads.

• Up to 2,100 lb load-leveling capacity for heavy cargo or trailers.
• Air pressure adjustable from 5–50 psi to dial in support.
• Helps keep headlight aim and rear ride height stable with loads.

What comes in the box and how difficult is installation?

The package includes two air helper springs, all mounting brackets, bolts, nuts, inflation valves, elbow fittings, tubing, and an installation manual. Installation is designed to be a direct fit replacement for the OEM-style part number listed, but basic tools and moderate mechanical experience are recommended.

• Complete kit with brackets and fasteners for bolt-in installation.
• Inflation valves and tubing included to connect to the inflation points you install.
• Follow the enclosed manual; no special fabrication required for compatible models.

Will this work with my truck’s factory systems and which models fit?

This MILLISEC kit is intended for RAM 1500 models from 2009–2010 Dodge Ram and 2011–2018 RAM 1500 and 2019–2024 RAM 1500 Classic as specified, provided the truck does not already have factory air suspension. It is a direct OEM replacement for the referenced part number and is not compatible with vehicles equipped with original factory air systems.

• Compatible with listed RAM 1500 years; not for trucks with factory air suspension.
• Direct fit to the OEM-style replacement number for simpler upgrade.
• Verify vehicle equipment before purchase to ensure fitment.

How do I adjust and maintain the air helper springs?

Adjustment is made by raising or lowering the air pressure in the helper springs to suit the current cargo and towing conditions. Routine checks of pressure, fittings, and mounting hardware keep the system performing and prevent leaks or misalignment over time.

• Inflate to higher psi for heavier loads, reduce pressure for empty or light loads.
• Inspect fittings and brackets after first few drives and periodically thereafter.
• Keep the inflation valves accessible for quick pressure checks and adjustments.

Who this is for: The MILLISEC Rear Air Helper Spring Bag Kit is aimed at RAM 1500 owners who regularly tow trailers, haul heavy cargo, or want to restore proper ride height under load without replacing the factory suspension. It’s well suited to DIY installers with moderate mechanical skills and to fleet operators looking to protect cargo and tires while improving vehicle control under weight. Verify your model and factory suspension before ordering to ensure compatibility.