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  1. Vehicle Suspension
  2. Pacbrake
  3. Air Springs
  4. Towing/Load Leveling
  5. Heavy Duty
  6. Rear Axle Suspension Enhancement
THIS ITEM IS NOT A FIT FOR
2021 Ford F-550 Cab and Chassis
Pacbrake

Pacbrake Alpha HD Air Bag Suspension Kit - Rear Axle - 5,000 lbs

Part Number: PB92FV
In Stock
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$387.99
Retail:$485.70
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Vehicle Suspension
Not Confirmed to Fit

2021 Ford F-550 Cab and Chassis

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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. Great Prices for the best vehicle suspension from Pacbrake. Pacbrake Alpha HD Air Bag Suspension Kit - Rear Axle - 5,000 lbs part number PB92FV can be ordered online at etrailer.com or call 1-800-940-8924 for expert service.
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  • Reviews (25)
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  • Videos (2)
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Pacbrake Vehicle Suspension - PB92FV

  • Air Springs
  • Towing/Load Leveling
  • Pacbrake
  • Heavy Duty
  • Rear Axle Suspension Enhancement
  • Suspension Only

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.


Highlights

  • Custom Fit for Your Vehicle: Precision brackets bolt to factory attachment points.
  • 5,000-lb Load Support: Adds rear axle support for towing, hauling, and bed-loaded stability.
  • Improved Ride Stability: Reduces rear-end sag, sway, and bounce for better handling under load.
  • Adjustable Air Pressure: Set support between 5 psi and 100 psi depending on your load.
  • Complete Kit, No Drilling: Includes laser-cut brackets, push-to-connect fittings, and all hardware.
  • Ready Now, Upgrade Later: Use manual inflation or connect to an onboard air system when you're ready.

Features to know about

Control and Cushion When It Counts

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.

Dial in the Ride for Any Load

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.

Built Tough for Work and Weather

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.

Installation That Doesn't Waste Your Weekend

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.

Flexible for Today, Ready for What's Next

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 (PB97YV).


Looking for a complete system with onboard air storage too? Upgrade to one of the "Ultimate" Kits (PB68YV) or (PB78YV) with air bags, compressor, wireless controller, and a 1/2-gallon or 2-1/2-gallon tank for added versatility.

Specs:

Weight & Capacity:

  • Load support: up to 5,000 lbs of additional leveling support
  • Air springs will not increase your vehicle's weight-carrying capacity. Do not exceed the manufacturer's recommended weight limit.

Adjustability:

  • Air pressure range: 5 psi 100 psi; maintain minimum 5 psi when unloaded

Estimated Install Time:

  • Professional install: 2 hrs
  • DIY: 3 hrs, depending on tools and experience. Plan for extra time if this is your first air spring install or you're working in a driveway setup.

Warranty:

  • Limited lifetime on air bags
  • 2-Year or 24,000 miles on mounting brackets, fasteners, and spacers

Included Components:

  • Pacbrake Alpha HD air springs (rear axle)
  • Precision laser-cut powder-coated steel brackets
  • Grade 5 plated hardware
  • Air lines, push-to-connect fittings, inflation valves, installation instructions


HP10005 Pacbrake Alpha HD Rear Air Suspension - 5,000 lbs - Manual Inflation Valves

Installation Details PB92FV Installation instructions

This Product Fits The Following Vehicles



California residents: click here


Video of Pacbrake Alpha HD Air Bag Suspension Kit - Rear Axle - 5,000 lbs

Videos are provided as a guide only. Refer to manufacturer installation instructions and specs for complete information.




Video Transcript for Review of Pacbrake Vehicle Suspension - Alpha HD Towing/Load Leveling Kit - PB92FV

Hello, everybody, this is Jeff at etrailer.com. Today we're gonna take a look at the Pacbrake Alpha HD Air Bag Suspension Kit for your rear axle. This has a 5,000-pound load leveling capacity. Now, this kit is a custom-fit kit. It is designed to fit a 2001 to 2010 Chevrolet Silverado and GMC Sierra 2500HD and 3500HD trucks. Works on both 2-wheel drive and 4-wheel drive trucks.

Now, this is for all trucks, including those with 5th-wheel hitches. One note I do wanna mention, though, is it will not fit cab and chassis vehicles. And on a custom-fit part like this, I'd 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 are designed to help you stay level, drive steady, and stay in control when hauling heavy loads. This kit will include everything I have laid out here on the table.

It includes the air springs for your rear axle, the upper and lower roll plates. Also, the precision laser-cut powder-coated steel brackets. Comes with grade 5 plated hardware. Comes with the air lines with the inflation valves. And then right up here on each one, you can see the push-to-connect fittings for the air lines.

And also comes with installation instructions to show you how it all goes together. Now, when your trailer's loaded and the bed's full, your truck needs more than just the stock rear springs to stay level and in control. That's where these Alpha HD air springs will come into play. They'll add up to about 5,000 pounds of rear axle support, helping your truck stay steady and secure through heavy haul. So basically, whether you're pulling a 5th wheel, or hauling materials or towing equipment, this upgrade here is gonna keep you from sagging, squatting, and struggling for control.

Now, also, one load isn't like the next. That's why this Pacbrake will give you freedom to adjust the air pressure from 5 PSI all the way up to 100 PSI. So basically, if you need full support for a loaded trailer, just pump it up. If you're unloaded and heading home, just drop the pressure for a smoother ride. So with the simple manual inflation right out of the box, you're gonna get better ride quality and confidence no matter how much you're hauling. And again, you just start with simple manual inflation. And then if you wanna expand your system later, you can use onboard air or wireless controls. Basically, the Alpha HD system is designed to scale with your setup, making future upgrades easy without redoing the foundation. Now, I did wanna zoom in a little bit and show you that these aren't light duty gear. These Alpha HD Springs are built with 1-inch-thick end caps on each end of the spring, and they use 20 internal wires in the spring to handle extreme loads without giving in. They do use corrosion-resistant parts, roll plates for protection of the springs, and powder-coated brackets to ensure that this system will hold up through road salt, rain, mud, and even over time. Now, this is designed to bolt to factory mounting points on your truck. This air spring kit installs with no drilling required. Now, the air springs will not increase your vehicle's weight carrying capacity, but you do 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 Air Bag Suspension Kit for your rear axle.

Ratings & Reviews

4.7

25 reviews
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.

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Don’t fit, worked on it for hours with no luck.



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They need instructions to be more clear but fit very nicely i would recommend pacebrake



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Going camping!!!



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Worked out great



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Easy install and done exactly what I needed it to do



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Excellent choice… Very high-quality… Took 4 to 5 hours to install… Which included new shocks getting all the tools together and clean up… Very happy thank you



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Installed this past weekend. Haven't towed with it yet. Nice construction and finish. I have a 2025 Chevrolet Trail Boss 2500HD and the spacers are NOT needed. Measurement for needing the spacers in 7" and above between jounce cup and contact pad. My space was 5.5" to 6".



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Awesome product easy to install and I really appreciate etrailer service



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It was very easy install . The ride has improved a lot while towing my 41 ft. toy hauler , Thanks !!



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Direct bolt on, plug and play



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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.



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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!



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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.



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Very well built brackets, installation was as explained in the instruction. Happy Camper!



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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!



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Thank you Joshua for your assistance.



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2005 Chevrolet Silverado


25
25

See what our Experts say about this Pacbrake Vehicle Suspension


Info for this part was:

Employee Jeff D
Installed by:
Jeff D
Employee Dustin K
Video Edited:
Dustin K
Employee Daron K
Edited by:
Daron K
Employee Dawn Z
Written by:
Dawn Z

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