To see if this custom-fit item will work for you please tell us what vehicle you'll use it with.
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 (PB87YV).
Looking for a complete system with onboard air storage too? Upgrade to one of the "Ultimate" Kits (PB63YV) or (PB73YV) 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 2011 to 2019 Chevrolet Silverado, and GMC Sierra 2500 HD, and 3500 HD trucks, either two-wheel drive or four-wheel drive. It will also fit trucks with or without fifth wheel hitches, but it will not fit the cabin chassis vehicles.
Now on a custom fit part like this one, 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. Now these airbags here are gonna help you stay level, drive steady, and stay in control when you're hauling heavy loads. This kit includes everything I have laid out here on the table. Your air springs for your rear axle, the upper and lower role plates, all the precision laser-cut, powder-coated steel brackets, grade five plated hardware, even gives you the airlines, the push to connect fittings, inflation valves, and even installation instructions on how this all goes together. Now, basically when the trailer is loaded, the bed is full.
Your Silverado or Sierra is gonna need more than your stock leaf springs to stay level and in control. That's where these Alpha HD air springs will add up to 5,000 pounds of axle support. This will help your truck stay steady and secure through every haul. Now, whether you're pulling a fifth wheel, hauling any materials, or just towing equipment, this upgrade will keep you from sagging, squatting, and struggling for control. And what's nice is one load isn't like the next.
So that's why this pack brake gives you the freedom to adjust the air pressure in here from five to 100 PSI. So basically, if you need full support for a loaded trailer, just pump it up. If you're unloaded, heading home, just drop the pressure for a lot smoother ride. So basically using your manual inflation right outta the box, you'll get better ride quality and confidence no matter how much you're hauling. Now this isn't light duty gear.
Let me just zoom in here a little bit closer. These Alpha HD springs are built with one inch thick end caps on the springs, and they use 20 internal wires on the air spring to handle extreme loads without giving in. And the parts are all corrosion resistant parts. The roll plates are for protection of the springs, and the powder coated brackets ensure the system holds up through road salt, rain, mud, and time. Now these are designed to bolt to your factory mounting points on your Silverado or Sierra. This air spring kit installs with no frame drilling required. And basically with this kit you can start simple with manual inflation and then you can expand your system later with onboard air or wireless controls. This Alpha HD is designed to scale with your setup, making future upgrades easy without having redoing the foundation. One note I do wanna mention, air Springs will not increase your vehicle's weight care and capacity, so you do wanna make sure not to exceed your manufacturer's recommended weight limit. But that's gonna do it for a look at this Pacbrake Alpha HD airbag suspension kit for your rear axle.
Ratings & Reviews
Look good so far. not hard to install.
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.
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.
nick was very helpful everything was as expected
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.
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.
Looks great. Thanks
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.
Worked well when pulling trailer. Kept vehicle and trailer level. Without trailer seems to creak and groan more than I thought it would.
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.
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.
I like these bags. This is my 3rd set of air bags but my 1st set of PACBRAKE I have owned and they are the best. Metal where others are plastic. Powder coated instead of paint that rusts off. nice hardware instead of crummy allan bolts that can't easily be removed. The bracing is much better too. They are by far higher quality than the firestone. Installation is about the same but they use stainless air fittings instead of plastic like the other guys. The ends of the PACBRAKE are machined aluminum. My Airlifts brand were plastic with inserts that broke out.(see pic) I havent had the chance to use the new PACBRAKE under tough conditions but the hardware and Materials they are made of are superior to the other brands.
Went in easy enough, better than I thought. Ride without trailer attached is good. Have not hooked up trailer yet
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