Air Lift 1000
Up to 1,000 lbPolyurethane helper spring for compatible rear-coil applications and lighter variable loads.
- Compact and affordable
- Less headroom than LoadLifter
TRM Tow & Load Lab
Tow level.
Drive in control.
Find the right truck air bag suspension kit, then choose manual, in-cab or wireless air management—without confusing trailer weight with the load your truck actually carries.
One rule before we start:Air springs restore ride height and control. They do not increase GVWR, GAWR, hitch, tire, wheel or brake ratings.Why this matters →
Air spring + onboard air finder
Two systems. One correct build.
First: choose the spring that supports the job. Then: choose how to inflate it. A compressor, remote or tank changes convenience—not legal payload.
My Truck GarageChoose your truck for fitment-ranked resultsYour saved vehicle follows you into the finder.
Your TRM air-system blueprint
Choose the complete build
Load support on the left. Air management on the right.
Buy either side by itself, or add the verified pair together when the truck configuration clears the direct-cart rules.
Vehicle-ranked air spring kits
Compressor and control
Matched to the control style and left/right load selected above.
Air Lift LoadLifter comparison
1000, 5000, Ultimate or 7500 XL?
The number is load-leveling capacity—not permission to exceed the truck’s ratings. Application and construction matter as much as the headline.
Air Lift 1000 HD
Up to 2,100 lbHeavier-duty insert for supported applications such as specific Ram 1500 rear-coil setups.
- 5–50 PSI on the 1000 HD line
- Application-specific
LoadLifter 5000
Up to 5,000 lbValue benchmark for many 1/2-, 3/4- and 1-ton leaf-spring trucks.
- Broad fitment coverage
- No internal jounce in standard kit
5000 Ultimate
Up to 5,000 lbAdds an internal jounce bumper with progressive, three-stage support.
- Better pressure-loss protection
- Same 5,000-lb class
Ultimate Plus
Up to 5,000 lbUltimate construction plus stainless hardware, braided lines and AN-style fittings.
- Premium plumbing
- Complete kits not currently stocked
7500 XL Ultimate
Up to 7,500 lbSeven-inch bellows for supported 3/4- and 1-ton trucks, with up to 20% more volume than 5000.
- More support at lower pressure
- Narrower applications
Manufacturer comparison image: Air Lift5000 vs 7500 XL
Choose by truck-carried load and duty cycle.
Choose 5000 / Ultimate when
the exact application fits and actual payload or hitch load sits inside every vehicle rating.
Choose 7500 XL when
a supported heavy-duty truck carries severe pin, camper or commercial load frequently.
WirelessAir, WirelessOne and tank systems
The remote changes convenience.
The path changes control.
Wireless removes cab airlines. Dual path lets you set left and right separately.
Manual fill
Schrader valves, external compressor and gauge.
Best for occasional loads.LoadController
In-cab gauge and switch; single or dual path.
More cab plumbing.WirelessOne
Single path, remote + app and three presets.
Best for balanced loads.WirelessAir
Dual path, remote + app, independent sides and presets.
Best for uneven loads.WirelessAir base
Dual-path wireless control with heavy-duty compressor.
Same control, easier mount
Preassembled EZ Mount; Air Lift says up to one hour less install time.
74100EZ
WirelessAir + 2-gal tank
Faster bag inflation and a hose for tires or gear. No extra load capacity.
Guide-only / special-order path at TRM.Air bag pressure
Level is the target.
Maximum PSI is not.
Load first
Connect the trailer or load the truck exactly as it will travel.
Measure
Record unloaded height, then the loaded squat on level ground.
Add air gradually
Increase pressure until the truck returns to target ride height.
Verify cold
Stay inside the exact kit’s minimum/maximum and every vehicle rating.
Too little air
Sag, bottoming, reduced bump travel and poor headlight aim.
Too much air
Harsh ride, reduced travel, added stress and potentially less traction.
Truck air bag suspension buying guide
How to choose an Air Lift LoadLifter kit for towing and hauling
A truck air bag suspension kit is an adjustable helper spring. It works with the factory spring to restore loaded ride height, reduce squat and bottoming, and improve control when the truck carries payload or hitch weight. It does not turn a half-ton into a three-quarter-ton.
Start with exact vehicle fitment. Brackets can change by year, drivetrain, single- or dual-rear-wheel axle, factory air suspension, cab-and-chassis configuration and special trim. A fifth-wheel or gooseneck hitch can occupy the same frame area.
Then calculate weight carried by the truck. For a travel trailer this is tongue weight plus hitch, passengers and cargo—not total trailer weight. For a fifth-wheel use actual loaded pin weight. Compare axle and vehicle weights with the door-jamb label.
Choose onboard air by frequency. Manual valves are economical. WirelessOne is single path for balanced loads. WirelessAir is dual path for independent left/right control. A two-gallon tank adds stored air and an accessory hose; it does not make a 5,000-lb spring a 7,500-lb spring.