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5,000-lb Capacity. When the load gets heavy, your truck shouldn't feel like it's fighting you. These air bags help you stay level and in control so you can tow with confidence and handle heavy loads without second-guessing your suspension.
When the load gets heavy, your truck needs more than just rear springs hanging on for dear life. Alpha HD air springs add up to 5,000 lbs of rear axle support, keeping your truck steady even when the trailer is loaded, the bed is packed, and the miles are long. No more rear-end sag throwing off your braking and steering, or headlights pointing into the sky. With air bag support underneath, you keep control of your ride even when you're towing a travel trailer or moving a serious payload.
Every load is different, and this system adjusts to match. Alpha HD air springs let you fine-tune ride height and firmness with air pressure from 5 to 100 psi. When carrying heavy weight, add air to level your suspension and maintain steady handling. Running without a load? Drop to the minimum pressure for a smoother, more compliant ride without stiffness or bounce. Manual inflation valves are included, so tuning your setup for each trip is straightforward and dependable.
Air bags are only as strong as their weakest link. That's why Alpha HD bags are reinforced from end to end with heavy-duty end caps, 20 internal support wires, and powder-coated steel brackets. Add corrosion-resistant hardware and thick roll plates, and you've got gear that holds up to real-world hauling through heat, cold, salt, and slop.
Adding serious load support shouldn't mean losing a whole weekend. The precision laser-cut brackets are designed to bolt cleanly to your truck's existing mounting points with minimal drilling. Just smart engineering that fits the way it should, which is perfect for the DIYer. Manual valves mount through license plate fastener holes or a location of your choosing (which may require drilling). With high-quality fittings, pre-bent brackets, and mounting hardware included, you'll be back on the road in just a few hours without a trip to the fab shop.
This kit is designed to work with your setup today and grow with your upgrades tomorrow. You can inflate manually through the included air valves right out of the box, no extra parts needed. Already have an onboard compressor? The Alpha HD system connects easily to most existing setups.
Want to step up to an all-in-one kit with air bags, compressor, and wireless controller in one package? We've got you covered with Pacbrake's On Demand Kit (PB99YV).
Looking for a complete system with onboard air storage too? Upgrade to one of the "Ultimate" Kits (PB65YV) or (PB75YV) with air bags, compressor, wireless controller, and a 1/2-gallon or 2-1/2-gallon tank for added versatility.
Videos are provided as a guide only. Refer to manufacturer installation instructions and specs for complete information.
Hello, everybody. This is Jeff at etrailer.com. Today we're gonna take a look at the Pacbrake Alpha HD Airbag Suspension Kit for your rear axle. Has a 5,000 pound load leveling capacity. Now, this is a custom fit part. It is designed to fit the 2009 and newer Dodge RAM 1500 trucks, both two-wheel drive and four-wheel drive.
Also fits the 2019 to 2023 RAM 1500 Classic trucks, also two-wheel drive or four-wheel drive. One note I do wanna mention. It will not fit the TRX models, the RHO models, or the vehicles with factory air suspension. And because it's a custom fit part, I do like to recommend for you to go to our website, use the fit guide, put in your year and model vehicle, and it'll show if this will work for your application. So basically, when the load gets heavy, your truck's gonna need more than just rear springs hanging on for deer life.
That's where these Alpha HD Air Springs come into play. They're gonna add up to 5,000 pounds of rear axle support, keeping your Dodge RAM level, steady, and confident even when the trailer's loaded, the bed is packed, and the miles are long. So, there's no more rear end sag throwing off your braking and steering, or your headlights pointing into the sky. So, with the airbag support underneath, you can keep control of your ride, your cargo, and your peace of mind even when you're towing a travel trailer or moving a serious payload. This part will include everything shown here on the table.
Includes the air springs for the rear axle, upper and lower roll plates, the precision laser cut powder coated steel mounting brackets. All the grade 5 plated hardware. Comes with the air lines with the inflation valves, and the push-to-connect fittings, which we've pre-installed right here on the bottom. That's where your air lines connect to. And a nice set of installation instructions that will describe how this all goes together.
Now, every load is different. That's why these Alpha HD airbags will provide adjustable air pressure control between 5 and 100 PSI. So basically, if you need full strength for a heavy trailer, just pump it up. If you're dropping off the trailer and heading home light, drop the pressure for a smoother ride. The simple manual inflation lets you adjust your suspension without the guesswork, so your truck feels balanced and comfortable, whether you're packed to the gills or just running light errands. Also, heavy hauling demands extreme durability. I did wanna zoom in and show you these Alpha HD springs that are built with one-inch thick corrosion resistant end caps on each spring. And then they're reinforced with 20 internal support wires for maximum strength under load. The roll plates we mentioned, the upper and lower roll plates, these are heavy duty. Helps protect the bags from chafing and extend your lifespan of them. And they use powder coated steel mounting brackets, which will fight back against rust, road salt, and rough seasons. (clears throat) Now, the precision laser cut brackets are designed to bolt cleanly to your truck's existing mounting points without any welding or drilling your frame. Just smart engineering that fits the way it should, which is perfect for the do-it-yourselfer. The manual valves we mentioned, these will mount through your license plate fastener holes, or a location of your choosing. And with the high quality fittings, the pre-bent brackets, the mounting hardware all included, it'll be back on the road with a stronger, steadier truck in just a few hours without a trip to the shop. Now, this kit is designed to work with your setup today and whenever your upgrades take you tomorrow. You can inflate manually with the standard air valves right out of the box. No extra parts needed. And if you already have an onboard compressor, this Alpha HD System will connect easily to most existing setups. And if you're planning for an in-cab wireless controller down the road, no problem. The foundation's already built in, making it easy to expand your control options when you're ready. One thing I do wanna mention, air springs will not increase your vehicle's weight carrying capacity. So, you wanna make sure not to exceed the manufacturer's recommended weight limit. But that's gonna do it for a look at the Pacbrake Alpha HD Airbag Suspension Kit for your rear axle.
Customer Satisfaction Score:
90% were satisfied with this product
10% of customers were not satisfied
Ratings & Reviews
It was very easy install . The ride has improved a lot while towing my 41 ft. toy hauler , Thanks !!
Direct bolt on, plug and play
Look good so far. not hard to install.
Great kit. Great quality. Easy assembly. Would’ve given 5 stars except for the J-Hooks. Having the end user cut them off creates an opportunity for someone to mess up. They could easily be made the correct length without causing install issues.
Easy instal and has worked perfectly.
The product is a great product. After installation was completed and the air added to the air suspension, it raised the rear end of the van about 2-3 inches.A very nice improvement.
Installation instructions definitely need better quality diagrams.
nick was very helpful everything was as expected
Easy to install and work just as I had expected. Great finish on brackets and quality hardware. Easy to follow instructions. Highly recommend these airbags!
The 2" spacers are definitely not needed for a Trail Boss. I could barely get them in, and now the ride is super stiff. Now I have to get back under the truck and remove the spacers. Not looking forward to that. It was very difficult installation, for no reason.
Very well built brackets, installation was as explained in the instruction. Happy Camper!
I put them to use today and was very happy with the ride and stability while towing my camper.
Love the product
The directions could’ve been a little more detailed
Put about 1800 miles on these last weekend. Was picking up a car that's heavier than my normal race car on the ramp truck, so I wanted to give the truck a bit of help. Good news, it worked well. Truck rode beautifully, loaded or unloaded.
The instructions could be a bit more clear, in regards to the clinch stud. I had that on backwards at first because of how things appeared in the picture. Also, I know most things are DIY but installation was about 80% assembly, 20% actual install. If these came already assembled, it would have saved a lot of time!
These fit absolutely perfect. Easy install help keep my truck level when connected to my fifth wheel.
Simple to install, did it without pulling the tires and wheels I seen no need for that, It took me a total of 3 hrs. to install in my driveway.
What a difference the air bags make when towing a camper. Installation was easy, instructions were well written.
The air bags were very simple to install but the u bolts for my gooseneck mount interfered with the air bag mounting
Good quality product. For my 2018 1500 Silverado it was a little difficult to get the U bolt over the frame but under the hard lines running on top of the frame in that area.
Aluminum ends, brackets, and even packaging was all exceptional and part of the reason I choose these. Haven't trailered anything yet but upon initial install no noticeable difference ride difference running 10 psi on a F250.
Both of the fitting leak where they swivel. Had to take everything back off. Not my first time installing bags but First time with this brand and will be the last. Etrailer won’t make it right and having me go though pacbrake. Waiting on email to get process started. They Don’t seem to be in any hurry. Will try and source fitting local so I can get this back together. Shane on you etrailer. I ordered from you and shipping was slow not knowing it was directly coming from manufacturer.
Worked well when pulling trailer. Kept vehicle and trailer level. Without trailer seems to creak and groan more than I thought it would.
Easy to install with the rear tires off, did one side at the time with a single jack and two jack stands. The towing of our fifth wheel is much better, much less chucking and more directional stable.
Going camping!!!
Overall the installation isn’t bad, couple bolts/nuts difficult to access but doable. Took little over an hour to install both heavy duty bags.
They do roughen the ride on the 2021 RAM 1500 hemi/etorque 4x4 with coil springs. I’ve brought the air pressure down to 2 lbs and still notice that without weight in bed or trailer attached it still is stiffer.
I would recommend using these Pacbrake heavy duty air bags.
Looks great. Thanks
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Lazer S.
7/20/2026
Glad to hear the install wasn't too bad, Dan! Sorry to hear it stiffened up you unloaded ride though. That is one of the only downsides with adding something like this to a Ram truck. They are known for their very nice ride and once you add anything for support when towing, it does inevitably mess with it. What are you towing?