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  1. Vehicle Suspension
  2. Pacbrake
  3. Air Springs
  4. Towing/Load Leveling
  5. Rear Axle Suspension Enhancement
  6. Extra Heavy Duty
THIS ITEM IS NOT A FIT FOR
2007 Chrysler Crossfire
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Pacbrake

Pacbrake Alpha XD Pro Air Bag Suspension Kit w/ Internal Jounces - Rear - 7,500 lbs

Part Number: PB74CJ
In Stock
$1,102.19
Retail:$1,224.66
You Save: $122.47
Vehicle Suspension
Not Confirmed to Fit

2007 Chrysler Crossfire

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Demanding trailer or cargo weight can leave your van squatting and less controlled. These air springs add up to 7,500 lbs of leveling support to reduce sag, sway, and bottoming, while internal jounces let you run 0 psi unloaded. Great Prices for the best vehicle suspension from Pacbrake. Pacbrake Alpha XD Pro Air Bag Suspension Kit w/ Internal Jounces - Rear - 7,500 lbs part number PB74CJ can be ordered online at etrailer.com or call 1-800-940-8924 for expert service.
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Pacbrake Vehicle Suspension - PB74CJ

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

Demanding trailer or cargo weight can leave your van squatting and less controlled. These air springs add up to 7,500 lbs of leveling support to reduce sag, sway, and bottoming, while internal jounces let you run 0 psi unloaded.


Highlights

  • Custom Fit for Your Van: Vehicle-specific brackets and hardware position the air springs for your van's rear suspension.
  • Level Demanding Rear Loads: Up to 7,500 lbs of supplemental support helps reduce rear sag with substantial trailer or cargo weight.
  • Match Support to the Load: Adjust air pressure to suit changing towing and hauling loads instead of running one fixed level of support.
  • Run at 0 psi Unloaded: Internal jounce bumpers let you bleed the air springs down to 0 psi once the extra load comes off.
  • Built for Life Under Your Van: Stainless steel hardware and braided air lines add corrosion resistance where the system faces road spray and weather.
  • Upgrade Your Air Control: Add a compatible onboard compressor or control system for more convenient pressure changes.

Features to know about

More Support for Demanding Rear Loads

Your van can feel composed empty, then change quickly once substantial trailer tongue weight, equipment, or a heavy cargo payload settles onto the rear suspension. The two adjustable rear air springs provide up to 7,500 lbs of load-leveling support to help bring a sagging rear back toward normal ride height while reducing sway and bottoming under load. Instead of treating that capacity as a target, you can tune the air pressure to the weight your van is actually carrying.

Heavy-Duty Support That Backs Off When You Do

A van built for serious towing or hauling may still spend plenty of miles without that weight on the rear suspension. Internal jounce bumpers let you increase air pressure when a substantial load calls for more support, then reduce the air springs to 0 psi when the extra weight comes off. Those internal jounces protect the air springs against bottoming when suspension travel is used up, so you don't have to maintain air pressure simply to protect the bags during unloaded driving. The result is adjustable support that can work around both sides of your van's job instead of treating every mile like a loaded one.

Corrosion Resistance Where Exposure Hits Hardest

Suspension hardware lives where road spray, dirt, and weather reach it, so material choices matter underneath your van. This kit uses braided stainless steel air lines along with stainless steel fittings, Schrader valves, roll plates, and mounting hardware to add corrosion resistance throughout key parts of the system. That extra durability is focused where it matters, helping the hardware you rely on for load support and pressure adjustment stand up to the environment beneath a working van.

Custom Installation

You'll start by measuring your van's stock ride height and checking tire-to-frame clearance before removing the factory jounce bumpers and axle strike blocks, with rear-wheel removal optional if you want more working room. The sway bar is temporarily disconnected during that process, then reinstalled before the air spring assemblies mount between the frame and axle using clamp-style hardware in the existing jounce locations and vehicle-specific support brackets, with some wiring temporarily moved if needed for clearance. Once the springs are positioned, aligned, and secured around the axle, you'll install the included exhaust heat shield, then route the braided stainless steel air lines away from brake lines, fuel lines, wiring, and other potential trouble spots, leaving enough slack for suspension movement before mounting the Schrader valves where they're easy to reach. Adding air bags is a job experienced DIYers can handle, but if you would rather leave it to a professional, we can help you find an installer near you.

Upgrade Your Air Control

The included Schrader valves give you everything you need to adjust the air springs manually, but pulling out an external compressor can get old when your van regularly switches between demanding loads and unloaded driving. You can add a Pacbrake Bravo Wireless Air Control Kit with XD Compressor (sold separately) to adjust pressure from your phone, check live pressure, and save presets for loads you come back to regularly. Also, you'll be able to choose between filling both air springs together or controlling them independently when the load isn't even side to side. It's an optional upgrade, but one that makes the adjustable part of an air-spring system much easier to use regularly. And it's not the only solution available. There are a variety of compressor options from Pacbrake that might be the perfect fit for your setup.

Specs

Load-leveling capacity:

  • Up to 7,500 lbs
  • Does not increase your vehicle's weight-carrying capacity or GVWR

Suspension configuration:

  • Quantity: 2 air springs
  • Suspension position: rear
  • Internal jounce bumpers

Air system:

  • Maximum air pressure: 100 psi
  • Unloaded air pressure: 0 psi permitted
  • Braided stainless steel air line length: 6'

Construction:

  • Stainless steel air spring fittings
  • Stainless steel mounting hardware
  • Stainless steel Schrader valves
  • Stainless steel roll plates
  • Braided stainless steel air lines

Estimated install time:

  • Professional install: 2 hours
  • DIY install: about 3 hours, depending on tools and experience
  • Plan for extra time for a first air spring install or when working in a driveway setup

Warranty:

  • Air bags: limited lifetime
  • Mounting brackets, fasteners, and spacers: 2 years or 24,000 miles


HP10731-X-J-S Pac Brake Alpha XD Pro Air Springs - Internal Jounces - Stainless Steel - Rear - 7.5K

Installation Details PB74CJ Installation instructions

This Product Fits The Following Vehicles




Video of Pacbrake Alpha XD Pro Air Bag Suspension Kit w/ Internal Jounces - Rear - 7,500 lbs
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Video Transcript for Review of Pacbrake Vehicle Suspension - Alpha XD Pro Rear Axle Air Bag Suspension Jounce SS - PB74CJ

Ratings & Reviews

4.9

7 reviews
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4 Stars
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3 Stars
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1 Star
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Appears to be well made and very well built. Will leave another review once installed
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Info for this part was:

Employee Katherine B
Edited by:
Katherine B
Employee Alex H
Written by:
Alex H
Employee Andy C
Installed by:
Andy C

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