If your Ram 3500 squats hard when you hitch up a fifth wheel or drop a slide-in camper in the bed, a set of rear helper air bags is the single most effective fix. These air springs mount between the frame and the axle, fill the gap your factory leaf packs leave under load, and let you dial in ride height with a few pounds of air. The result is a level truck, headlights pointed at the road instead of the trees, and far less of that wallowing, top-heavy feeling when a crosswind hits the trailer.
We focused this guide on kits that actually fit the Ram 3500 dually and single rear wheel platforms, with attention to load rating, sway control, and how livable the ride stays when the bed is empty. Below are seven options we rate highly, from heavy haul monsters to simpler comfort-first setups, so you can match the bag to how you really use the truck.
| Photo | Product | Score | Buy |
|---|---|---|---|
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Air Lift LoadLifter 5000 Ultimate Plus (Ram 3500) Best Overall 5,000 lb rated load support, internal jounce bumper, double convoluted bag |
9.5 | 🛒 Check Price |
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Firestone Ride-Rite 2299 (Ram 2500/3500) Best for Towing 5,000 lb max load leveling capacity, rugged rubber bellows air springs |
9.3 | 🛒 Check Price |
 |
Hellwig 6201 Big Wig Air Spring Kit (Ram 3500) Best for Sway Control Up to 5,000 lb load leveling, tapered sleeve springs, strong sway resistance |
9.1 | 🛒 Check Price |
 |
Air Lift LoadLifter 7500 XL Ultimate (Ram 3500) Best Heavy Duty 7,500 lb rated capacity, severe duty bags, internal jounce bumper |
9.0 | 🛒 Check Price |
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Daystar Cam Can Air Bag Cradle Kit (Ram 3500) Best Ride Comfort Polyurethane cradle support, comfort oriented, protects factory bags |
8.7 | 🛒 Check Price |
|
Air Lift 1000 Air Spring Kit (Ram 2500/3500) Best Value Light to moderate load leveling, coil style bags, easy install |
8.4 | 🛒 Check Price |
 |
Timbren SES Suspension Enhancement System (Ram 3500) Best Maintenance Free Aeon rubber spring, no air lines, zero maintenance progressive support |
8.2 | 🛒 Check Price |
1. Air Lift LoadLifter 5000 Ultimate Plus (Ram 3500): Best Overall
The LoadLifter 5000 Ultimate Plus is the kit we point most heavy Ram 3500 owners toward, because it is built for the work this truck actually does. The double convoluted air spring supports up to 5,000 pounds across the pair, and the real party trick is the internal jounce bumper sitting inside each bag. If you slam an expansion joint with a loaded gooseneck behind you, that bumper takes the shock instead of letting the spring fold over on itself. For full timers and serious haulers, that durability margin is worth a lot.
The honest weakness is install effort and weight. This is the most physical kit in the guide, the brackets are beefy, and getting everything torqued and squared away takes patience and ideally a second set of hands. It is also more capability than a weekend hauler needs. But if you tow near the top of the 3500’s rating regularly, nothing here inspires more confidence over the long haul.
- Internal jounce bumper protects the bag during heavy bottom-outs
- Double convoluted air spring rated to support up to 5,000 lb
- Stainless and aluminum hardware for long term corrosion resistance
Pros: Outstanding load support for fifth wheels and slide-in campers; Built in bumper keeps the bag safe when you hit a hard dip; Holds height well over long towing days
Cons: Heaviest and most involved kit to install; Overkill if you only carry light loads
2. Firestone Ride-Rite 2299 (Ram 2500/3500): Best for Towing
The Firestone Ride-Rite 2299 is the towing workhorse of this list. It is a very widely run helper air bag kits on heavy Ram trucks, and that popularity is earned. The rubber bellows springs are simple, strong, and rated to support up to 5,000 pounds, which is exactly what you want when a loaded fifth wheel is pushing the back of the truck toward the pavement. Air them up, watch the rear come back to level, and the steering and braking both feel noticeably more planted.
The catch is that the base kit is manual. You inflate and deflate at a Schrader valve, so adjusting between an empty bed and a heavy trailer means walking around with a gauge and a pump unless you invest in a separate onboard air system. For a lot of owners that tradeoff is fine, but if you change loads constantly, plan to budget for a compressor kit on top of this. The springs themselves, though, are about as trustworthy as it gets.
- Heavy duty rubber bellows air springs rated to 5,000 lb
- Proven Ride-Rite design trusted by long haul and RV owners
- Vehicle specific brackets for a clean, secure fit
Pros: Excellent at leveling a sagging rear under a fifth wheel; Tough bellows construction holds up to years of towing; Wide availability of parts and accessories
Cons: Manual inflation unless you add a compressor kit separately
3. Hellwig 6201 Big Wig Air Spring Kit (Ram 3500): Best for Sway Control
If your main complaint is not just sag but that nervous, leaning feeling when a tall trailer or truck camper catches a gust, the Hellwig Big Wig 6201 is built specifically for you. Hellwig comes from a sway bar background, and that philosophy carries into these tapered sleeve air springs. They are tuned to resist roll, so the 3500 stays flatter through corners and reacts less to side loads. On a windy interstate behind a slide-in, that translates to a calmer, more confident truck.
The tradeoff for that stability is ride character when the bed is empty. The Big Wig setup runs a bit firmer than the plushest comfort bags here, so you feel more of the road on a bare frame. It is also a less mainstream name, which can mean a little more hunting for support compared to the big two. For owners who prioritize control over cushion, though, this kit is genuinely excellent.
- Tapered sleeve air springs designed to cut body roll and sway
- Heavy gauge powder coated brackets for a durable mount
- Engineered to keep the truck flat through corners under load
Pros: Best in class at reducing sway and body roll when towing tall; Stout bracketry and quality powder coat finish; Noticeably more stable feel with a top heavy camper
Cons: Firmer empty ride than softer comfort focused bags; Less name recognition than Firestone or Air Lift
4. Air Lift LoadLifter 7500 XL Ultimate (Ram 3500): Best Heavy Duty
When the LoadLifter 5000 still is not enough, Air Lift’s 7500 XL Ultimate steps up to a 7,500 pound rating with severe duty air springs. This is the kit for owners who run their Ram 3500 like a commercial machine, towing maxed out goosenecks, hauling equipment, or living with a heavy bed nearly every day. Like its smaller sibling it includes an internal jounce bumper, so the durability story is just as strong, only with more headroom for serious weight.
The honest reality is that this much capacity is more than the average truck owner will ever use, and you pay for it in bulk and install complexity. The components are large and the kit takes real effort to fit correctly. If you only occasionally tow near the truck’s limit, the 5000 series is the smarter buy. But for the heaviest users who want zero doubt under load, the 7500 XL has the reserve capacity nothing else here matches.
- Maximum 7,500 lb load support for the heaviest hauls
- Severe duty air springs built for commercial level work
- Internal bumper plus rugged hardware for abuse resistance
Pros: Highest load capacity in this guide for extreme loads; Built to shrug off rough roads and frequent heavy use; Excellent height retention even fully loaded
Cons: More capability and bulk than most owners need; Larger, more complex install
5. Daystar Cam Can Air Bag Cradle Kit (Ram 3500): Best Ride Comfort
Not every Ram 3500 owner is towing at the limit. If you mostly carry moderate loads and care about how the truck rides day to day, Daystar’s polyurethane approach prioritizes comfort in a way the firmest haul kits do not. The polyurethane cradle helps cushion and support the air spring, taking the edge off harsh hits and giving a loaded truck a more settled, compliant feel over rough pavement. For owners who found a stiff helper setup too jarring, this is a welcome change in character.
The flip side is that a comfort first design does not level a heavily sagging rear as aggressively as a dedicated 5,000 pound air spring kit. If your typical load is a maxed fifth wheel, you will want one of the high capacity options instead. But for daily drivers that haul in moderation and value a smooth ride, Daystar’s polyurethane durability and softer manners make a lot of sense.
- Polyurethane cradle design tuned for a smoother loaded ride
- Helps support and protect the air spring under heavy weight
- Made in the USA polyurethane built to resist weathering
Pros: Softer, more compliant ride than firm sway focused kits; Durable polyurethane that holds up to sun and road grime; Helps a loaded truck feel more settled, less harsh
Cons: Comfort focus means less aggressive load leveling; Best paired with the right air spring for your weight
6. Air Lift 1000 Air Spring Kit (Ram 2500/3500): Best Value
The Air Lift 1000 is the sensible starting point for a Ram 3500 owner who hauls lighter loads or only tows now and then. Compared to the brand’s heavy 5000 and 7500 kits, this is a smaller, simpler set of convoluted air springs that goes in faster and still lets you add air to trim out rear squat. For a truck that mostly runs empty and occasionally carries a modest load, it delivers the core benefit of helper bags without the bulk or the involved install of the big kits.
The clear limitation is capacity. The 1000 series is not built to level a maxed gooseneck or a heavy slide-in camper, and pushing it past its comfort zone is not the right move on a one ton truck. If your loads are genuinely heavy, step up to the 5000 series. But as an affordable, easy first upgrade for lighter duty, the Air Lift 1000 punches above its weight and is hard to argue with on value.
- Convoluted air springs sized for light and moderate loads
- Simpler, lighter kit that installs faster than heavy duty sets
- Adjustable air pressure to fine tune ride height
Pros: Easy entry point with a straightforward install; Great for occasional or lighter hauling needs; Lets you trim sag without a big commitment
Cons: Not rated for the heaviest fifth wheel loads; Less load support than the 5000 series kits
7. Timbren SES Suspension Enhancement System (Ram 3500): Best Maintenance Free
The Timbren SES is the answer for owners who want the load support of helper bags without ever touching a compressor or worrying about a leak. Instead of an inflatable air spring, Timbren uses Aeon hollow rubber springs that compress progressively. With an empty bed they barely engage, and as weight comes on they firm up to support the load. There is no air to add, no lines to route, and nothing to fail in the cold, which makes this the most set and forget option in the guide.
The tradeoff is right there in the design. Because there is no air, you cannot dial in ride height on the fly the way you can with a true air bag system. You get the support the rubber provides and no more, and once the springs fully engage the ride turns firm. For owners who hate maintenance and carry fairly consistent loads, that simplicity is a feature. For those who want precise, adjustable leveling between very different loads, an air system serves better.
- Aeon hollow rubber springs need no air, lines, or compressor
- Progressive support that firms up as load increases
- Sealed design that ignores leaks and cold weather pressure loss
Pros: Truly maintenance free with nothing to inflate or leak; Progressive rubber gives support only when you need it; Simple bolt on with no air system to plumb
Cons: No on the fly height adjustment like real air bags; Firmer feel once the rubber engages under load
Frequently Asked Questions
Do air bags increase the towing capacity of my Ram 3500?
No, and this is the most important thing to understand. Helper air bags do not raise your truck’s rated towing or payload capacity, which is set by the manufacturer based on the frame, axles, brakes, and tires. What they do is help your truck carry and tow up to its existing rating more safely and comfortably by leveling the rear, reducing sag, and cutting sway. Always stay within your Ram 3500’s factory ratings on the door jamb sticker. Air bags improve how the truck handles a legal load, not how much weight you are legally allowed to carry.
How much air pressure should I run in the bags?
It depends on the load. Most helper air spring kits for the Ram 3500 have a minimum pressure you should never go below, often around 5 psi, to keep the bag from chafing or folding when empty. From there you add air as load increases, watching the rear ride height come back to level. A loaded fifth wheel might call for 35 to 60 psi or more, while an empty bed wants only the minimum. Never exceed the maximum pressure printed on the kit, usually 100 psi. The right pressure is whatever brings your truck back to a level stance for that specific load.
Will helper air bags make my empty truck ride harsh?
If you set them correctly, not much. The key is dropping the bags back to their minimum recommended pressure when the bed is empty so the air spring is barely doing any work. Comfort focused kits like the Daystar polyurethane setup keep the empty ride especially compliant, while sway oriented bags like the Hellwig Big Wig run a touch firmer by design. The common mistake is leaving high pressure in the bags after unloading, which does make the ride bouncy and stiff. Keep them low when empty, air them up when loaded, and the daily ride stays pleasant.
Should I add an onboard air compressor system?
If you change loads often, an onboard air system is worth it. Base kits like the Firestone Ride-Rite are manual, meaning you inflate and deflate at a Schrader valve with a gauge and a pump every time the load changes. That is fine if your load is consistent, but tedious if you swap between an empty bed and a heavy trailer regularly. An onboard compressor with a cab switch or wireless control lets you adjust pressure in seconds without leaving the seat, and the better systems can even level side to side. For frequent haulers it pays for itself in convenience.
Are these air bags hard to install at home?
Most fall into the moderate DIY range, taking a typical owner a few hours with basic hand tools, a jack, and patience. Lighter kits like the Air Lift 1000 and the maintenance free Timbren SES are among the simpler installs. The heavy duty LoadLifter 5000 and 7500 kits involve more substantial brackets and more hardware, so a second set of hands and a torque wrench help a lot. If you go with a manual kit you only mount the bags and run an air line to a valve, while an onboard compressor adds wiring and plumbing that increases the difficulty. None require cutting the frame, but reading the instructions fully before starting saves real frustration.
Our Verdict
For most Ram 3500 owners, the Air Lift LoadLifter 5000 Ultimate Plus is our top pick. It pairs a serious 5,000 pound load rating with an internal jounce bumper that keeps the bag safe under hard hits, making it the most confidence inspiring all around choice for towing and hauling. If you want a proven, widely supported towing workhorse instead, the Firestone Ride-Rite 2299 is our runner up, leveling a sagging rear beautifully and earning its reputation among long haul and RV owners. Match the kit to how heavy and how often you load, keep the pressure low when empty, and stay inside your factory ratings, and any bag on this list will transform how your truck carries a load.
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