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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
2005 Jeep Grand Cherokee
Pacbrake

Pacbrake Alpha HD Pro Air Bag Suspension Kit w/ Internal Jounce Bumpers - Rear Axle - 5,000 lbs

Part Number: PB85ZV
In Stock
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$502.21
Retail:$608.30
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Vehicle Suspension
Not Confirmed to Fit

2005 Jeep Grand Cherokee

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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 Pro Air Bag Suspension Kit w/ Internal Jounce Bumpers - Rear Axle - 5,000 lbs part number PB85ZV can be ordered online at etrailer.com or call 1-800-940-8924 for expert service.
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Pacbrake Vehicle Suspension - PB85ZV

  • 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: Reduces rear-end sag, sway, and bounce for better handling under load.
  • Ride Smooth When Unloaded: Internal jounce bumpers protect ride quality with no air in the bags.
  • Adjustable Air Pressure: Set support between 0 psi and 100 psi depending on your load.
  • Complete Kit, Minimal Drilling: Includes laser-cut brackets, push-to-connect fittings, and all hardware.
  • Ready Now, Upgrade Later: Use manual inflation or connect to onboard air when you're ready.

Features to know about

Control and Cushion When It Counts

Heavy trailers, full beds, gear piled high, it all changes how your truck handles. Without the right support, you feel it immediately: sagging in the rear, poor handling, and a ride that gets unpredictable fast. This air bag system puts you back in control with up to 5,000 lbs of load-leveling support it helps reduce squat, improve steering response, and keep your truck stable when the weight stacks up.

Comfort When Unloaded, Control When Loaded

Every haul is different, and your suspension should keep up. Alpha HD Pro air springs give you full control over ride height and firmness with adjustable air pressure from 5 to 100 psi. Driving unloaded? The built-in jounce bumpers let you safely run at 0 psi for a smooth, factory-style ride with no harsh rebound. Hooked up to a fifth wheel or hauling a bed full of gravel? Add air to level the truck and keep handling tight. With manual inflation valves included, tuning your suspension for the day's load 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 Pro bags are reinforced all the way through with heavy-duty end caps, 20 internal support wires, integrated jounce bumpers, and powder-coated steel brackets. Toss in 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 DIY-er. 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 Pro 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 (PB49YV).


Looking for a complete system with onboard air storage too? Upgrade to one of the "Ultimate" Kits (PB85YV) or (PB25YV) with air bags, compressor, wireless controller, and 1/2-gallon or 2-1/2-gallon air 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; 0 psi when unloaded

Estimated Install Time:

  • Professional install: 2hrs
  • DIY: 4 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 Pro air springs (rear axle, with internal jounce bumpers)
  • Precision laser-cut powder-coated steel brackets
  • Grade 5 plated hardware
  • Air lines, push-to-connect fittings, inflation valves, installation instructions


HP10337-J Packbrake Alpha HD Pro Rear Air Spring Suspension Kit - Manual Inflation Valves - 5,000 lbs

Installation Details PB85ZV Installation instructions

This Product Fits The Following Vehicles



California residents: click here


Video of Pacbrake Alpha HD Pro Air Bag Suspension Kit w/ Internal Jounce Bumpers - 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 Pro Towing/Load Leveling Kit - PB85ZV

Hello everybody, this is Jeff at etrailer.com. Today we're gonna take a look at the Packbrake Alpha HD Pro airbag suspension kit for your rear axle. It 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 models. Also fits the 2019 to 2023 Ram 1500 classic trucks.

Also two wheel drive and four wheel drive models. One note I do wanna mention is it will not fit the TRX models, the RHO models or vehicles with factory air suspension. And on a custom fit part like this, 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 you if this will work for your application. Now, when the load gets heavy, your truck's gonna need more than just rear springs hanging on for dear life. These Alpha HD Pro air springs are 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.

There's no more rear end sag throwing off your braking and steering or your headlights pointing into the sky. With the airbag support underneath, you're gonna 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. It does include, this kit includes everything shown here on the table. It includes the air springs for the rear axle, both the upper and lower roll plates, all the precision laser cut powder coated steel mounting brackets, all the grade five plated hardware. Does include the airlines with the inflation valves, the push to connect fittings, which we've already just installed onto here.

You can see 'em at the bottom on each spring they have them, and that's where your airlines will connect to the springs. And it comes with a nice set of installation instructions that'll show how everything's put together. Now, bottoming out doesn't just feel rough, it could wreck your airbags. That's why this HD Pro system includes the jounce bumpers on the inside of each bag. So even if you have no air pressure on 'em, your suspension has a built-in safety net.

You could safely run at zero psi when you're unloaded, which means no harsh rebound, just a nice, smooth factory style ride. And if you're heading to work with an empty bed or cruising home after dropping the trailer, your truck stays comfortable, controlled, and ready to haul again with just a quick bump in the pressure. Now also, every haul is different. That's why these Alpha HD Pro air springs will give you full control over ride height, firmness with adjustable air pressure from 5 to 100 psi. So if you're hauling a fifth wheel or a full bed of gravel, just crank up the pressure. If you're unloaded heading home, drop it back down for a nice, softer ride. And with the manual inflation valves included, tuning your suspension for the day's work is pretty straightforward. Now, heavy hauling does demand extreme durability. I did wanna zoom in onto the springs just to show you these Alpha HD springs are built with one inch thick corrosion resistant end caps on each spring. And then they use, they're reinforced with 20 internal support wires for maximum strength under load. The roll plates we mentioned, upper plates, lower plates. These are heavy duty roll plates. They'll protect the bags from any chafing and help extend the lifespan of the bags. And the powder coated steel mounting brackets will fight back against any rust or road salt. Now those precision laser coated or laser cut mounting brackets are designed to bolt cleanly to your truck's existing mounting points without any welding or drilling your frame. And it's just smart engineering that fits the way it should with which is perfect for the do it yourselfer. The manual valves right here will mount through your license plate fastener holes, or a location of your choosing. So with the high quality fittings, the pre bent brackets and the mounting hardware included, you'll be back on the road with a stronger, steadier truck in just a few hours without a trip to any shop. Now, as we mentioned, you can manually inflate these with your standard air valves right out of the box. No extra parts needed. Now, if you already have an onboard compressor, this Alpha HD system will connect easily to most existing setups. Or if you're planning for an in cab wireless controller down the road, it's no problem. The foundation's already built in making it easy to expand your control options when you're ready. One note I do wanna mention, these air springs will not increase your vehicle's weight carrying capacity, so 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 Packbrake Alpha HD Pro airbag suspension kit for your rear axle.

Customer Satisfaction Score:

Ratings & Reviews

4.3

12 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.

by:



by:



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by:

haven't received or used it yet but pretty darn excited



by:

The brackets are not built heavy enough



by:

Easy install. Will pull trailer 3000 miles on vacation and see how it performs to Montana on highways and Forest Service roads.



by:

good product , good strong solid metal parts and heavy bags. The instructions were not so hot but was easy to figure out and quick delivery !



by:

Where to start I have 1500 pounds of tools in my 150 Chevy had them installed and it totally changed the ride and handling of the truck haven’t pulled anything yet but I’m amazed on how different the truck is already I Baught the ones with the bump stops in them the HD ones



by:

I'm Vincent J,
My experience with loading
my truck and seeing the difference with these air bags from PacBrake, it does look way better and the truck feels a bit more stable running atspeed limit (65mph) after that it does feels jumpy if you go over potholes, but overall I'm happy with the product, thanks Etrailer,



by:

Product is well constructed and installation is straightforward. But you cannot build the kit and slip it in, you have to leave the top bracket off and install it after setting the lower bracket and air bag in place. I will note, I was working off jack stands and a floor jack, not on a lift.



by:
2020 Dodge Ram Pickup

2020 Ram 1500.
Installation is fidgety
with lining everything together for the upper bracket with u-bolt(reason for 4 stars), but still preferred over cutting the bump stop mounts off. Replaced the Timbrens with this and it is night and day difference in ride quality both unloaded and towing.
Would purchase again.



by:

Easy to install and looks like it’s a high-quality product


12
12

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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