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ALPHA Air Suspension
Built to Outperform

You are uncompromising in your need for QUALITY, DURABILITY, and VALUE. That's why we've spent over 60 years making sure every ALPHA™ air suspension kit meets your needs. Built tough, tested hard, and engineered to outlast the job.

Air Suspension Application Guide
ALPHA Air Suspension

Why Do I Need Air Springs?

When you load your truck with a trailer, camper, or heavy payload, the rear end squats — causing sag, sway, bottoming out, headlights aiming skyward, and light steering as weight shifts off the front axle.

Pacbrake air springs sit between the frame and axle and carry part of that load: air them up to match the weight and the truck stays level, stable, and rides properly whether loaded or empty. They don't raise your tow or payload rating; they let your truck handle its rated load the way it should.

Built for Every Job, Every Load, and Every Tow.

Choose the kit that matches your need

ALPHA SD

ALPHA SD

Handles up to 2,000 lbs - keeps your ride level and comfortable for light-duty towing and everyday hauling.

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ALPHA HD

ALPHA HD

Delivers up to 5,000 lbs of heavy-duty capacity - full suspension travel, no jounce bumper, and the support you need when it counts.

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ALPHA HD PRO

ALPHA HD PRO

Handles up to 5,000 lbs with an internal jounce bumper - protects your bags from bottoming out and lets you run at 0 psi.

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ALPHA XD

ALPHA XD

Delivers up to 7,500 lbs of extreme-duty capacity - full suspension travel and the flexibility your application demands.

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ALPHA XD PRO

ALPHA XD PRO

Handles up to 7,500 lbs. Internal jounce bumper protects your bags and lets you run at 0 psi for the ultimate ride.

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Jounce Bumper Comparison

Standard vs. Pro: Which Kit Is Right for You?

Both kits deliver the same rugged ALPHA™ construction and load capacity. The difference comes down to one feature — the internal jounce bumper.

With Jounce Bumper PRO Series
  • Internal bumper prevents bags from bottoming out
  • Run at 0 psi for the ultimate unloaded ride
  • Maximum bag protection under heavy loads
  • Best for frequent towing and heavy-duty applications
Without Jounce Bumper Standard Series
  • Full suspension travel with no restrictions
  • Greater flexibility for varied applications
  • Must maintain minimum air pressure at all times
  • Best for occasional towing and mixed use
 PACBRAKE VS THE COMPETITION Pacbrake is the only military-approved air suspension manufacturer in the industry and an OEM supplier to over 40 vehicle makers. Their kits feature solid aluminium end caps and 20 support wires per bag - the most in the industry - delivering superior ride quality, maximum durability, and outstanding value. Air Spring Kit FAQ | ALPHA Air Suspension

Frequently Asked Questions

Pacbrake air spring kits are built for heavy towing: inch-thick aluminum end caps, beefy brackets, and 20 support wires — the most in the industry. Choose an ALPHA HD (5,000 lb) kit for everyday work and towing, or step up to ALPHA XD (7,500 lb) for frequent heavy trailer hauling, fifth-wheels, and sustained loads. Both keep your truck level and stable under tongue weight, so you tow without sag or sway.

No. Air spring kits level your truck and restore ride height under load. They do not change your vehicle's rated payload, axle capacity, or maximum tow rating.

Yes. By sharing the load, air springs reduce stress on your leaf springs and shocks — extending the life of your existing suspension components.

Yes. Pacbrake air spring kits are designed for DIY installation with basic hand tools — no cutting or welding on most applications. Every kit ships with vehicle-specific brackets, hardware, and a step-by-step install guide, and installation videos are available on our YouTube channel. If you'd rather not do it yourself, use our dealer finder to locate an installer near you.

Adjust pressure to match your load — heavier loads require higher PSI. Check your kit's load chart and adjust before every tow. Underinflated bags are the most common cause of rear sag.

Only ALPHA PRO Series kits with an internal jounce bumper are designed to run at 0 psi when unloaded. Standard kits require minimum pressure at all times to prevent the bag from bottoming out.

The most common causes are insufficient air pressure, excessive tongue weight beyond your truck's rated capacity, poor weight distribution, or worn factory suspension components. Air spring kits restore ride height — they do not increase your payload or tow rating.

Yes. Our BRAVO Air Control system lets you adjust air pressure from inside the cab — no manual valve, no getting out of the truck. Use our BRAVO Wireless Air Control phone app or a compact handheld remote HP10660 to dial in your pressure on the go, loaded or empty.

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NEED HELP FINDING THE PERFECT KIT?

Check the application guide for fitment details, or reach out to the Pacbrake team directly.

Toll-free: 1-800-663-0096
Email: [email protected]
Order: [email protected]

SEE AIR SUSPENSION APPLICATION GUIDE