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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 (PB56YV).
Looking for a complete system with onboard air storage too? Upgrade to one of the "Ultimate" Kits (PB54SV) or (PB34SV) 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.
Hi everybody. Andy here with etrailer.com. Let's take a real quick look at this Pacbrake Alpha HD rear axle double convoluted airbag suspension kit. Now this kit has been designed to fit your 2011 to 2016 Ford F-250 and F-350 Super Duties with the two and four wheel drive models, then your 2011 to 2014 F-450 Super Duty with the four wheel drive model. Now in custom fit parts such as this kit, I do recommend taking advantage of our vehicle fit guide here at etrailer.com, and put the year, make and model of your vehicle, and our fit guide will confirm if this kit will work for you, or if we have something comparable that will work for you. As you know, heavy trailers, full beds, and gear piled high, that all changes how your truck handles.
So without the right support, you're gonna feel it immediately, such as sagging in the rear, poor handling, and a ride that gets unpredictable very fast. This airbag system puts you back in control with up to 5,000 pounds of load leveling support. It's gonna help reduce squat, it's gonna help improve steering response, and keep your truck stable when the weight stacks up. But as you know, every haul is different. That's why these springs are gonna give you full control over ride height and firmness with adjustable pressure from five to 100 PSI.
So if you're hauling a fifth wheel or a full bed of gravel, you can crank that pressure up, and then when you're unloaded and heading home, you can drop that pressure back down for a softer ride. So with the manual inflation valves included, tuning your suspension is gonna be very simple. Now these bags are reinforced with heavy duty end caps, and you can't see those end caps because of the, I just have them kind of loosely put together here to give you an idea of what the installed product's gonna look like. But the bags are also reinforced with 20 internal support wires, and we do have just premium materials all throughout. We have heavy duty roll plates on the top and the bottom.
They're gonna protect the bags from chafing, help extend their life. And then we have these powder coated, precision cut, laser cut custom fit brackets that are going to help installation go easier. So you're not gonna have to worry about doing a bunch of drilling or anything like that with the included hardware that you see there on your screen. You're gonna have everything that you need to get this installed into place. So this kit and the components with this kit are designed for those rough road conditions, and basically for any season of weather that you find yourself going through.
Now, this kit is designed to work with your setup today, and wherever your upgrades may take you down the road, again, you're gonna be able to inflate manually with the standard air valves right out of the box. No extra parts needed. But if you already have an onboard compressor, that's great, because these are gonna connect easily to most existing setups. And then maybe you're planning for something like an in-cab wireless controller down the road. That's not gonna be an issue either, because with this system, you're laying the foundation that's going to work with most of your upgrades going down the road. So you're not gonna be limited with just this out of the box. As I had mentioned, this is gonna give you up to 5,000 pounds of load leveling support, but I do wanna make you aware of the fact that this does not actually increase your truck's weight carrying capacity. So you do wanna make sure that you're not exceeding your manufacturer's recommended weight limit. If you do have any other additional questions, don't hesitate to reach back out to us. We wanna make sure that you're getting exactly what you want and need. And when you get these installed, we wanna hear about how the installation went for you and how the operations going as well, so you can share your experiences with us by dropping a comment or leaving a review on this product page. Well, I think that's gonna wrap up our look today. I do hope that it was helpful for you. Again, my name is Andy. Thank you for joining me.
Ratings & Reviews
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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?