Pacbrake ALPHA Series Air Spring Kits
Pacbrake stands out with its commitment to quality-offering the only air springs with one-piece aluminum end caps (XD models), built to endure cold weather, off-road conditions, and heavy-duty use without cracking or leaking. Whether you’re launching a boat, hauling equipment, or leveling a loaded trailer, Pacbrake’s ALPHA Series ensures safe, stable, and confident driving.
Heavy-Duty Load Leveling for Trucks & Work Vehicles – Eliminate truck sag, sway, and bottoming out with Pacbrake’s ALPHA Series air springs-built to outperform with industry-leading strength and durability. Whether you need 5,000 or 7,500 lbs of load support, Pacbrake has a solution engineered for your truck’s demands.
Key Benefits
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Up to 7,500 lbs of load-leveling capacity*
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Eliminates sag, reduces sway, and improves ride quality
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Inch-thick corrosion-resistant end caps with 20 support wires
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Bump stops included in PRO models for added protection
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Lifetime warranty for peace of mind
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DIY-friendly kits with comprehensive install guides
* Never exceed the vehicle’s Gross Vehicle Weight Rating (GVWR).
Model Comparison
| Model | Load Capacity | Bump Stops | Stainless Steel Hardware | End Cap Material | Use When Unloaded | Ideal For |
|---|---|---|---|---|---|---|
| ALPHA HD | 5,000 lbs | No | Standard | Steel | Air required | Work trucks, towing |
| ALPHA HD PRO | 5,000 lbs | Yes | Standard | Steel | Can run at 0 PSI | Comfort when unloaded |
| ALPHA HD PRO STM | 5,000 lbs | Yes | Yes | Steel | Can run at 0 PSI | Extreme durability |
| ALPHA XD | 7,500 lbs | No | Standard | Aluminum | Air required | Extreme towing & hauling |
| ALPHA XD PRO | 7,500 lbs | Yes | Standard | Aluminum | Can run at 0 PSI | Max bag travel, heavy loads |
| ALPHA XD PRO STM | 7,500 lbs | Yes | Yes | Aluminum | Can run at 0 PSI | Off-road & marine trailers |
Compatibility / Fit
- Fits 2007-2024 Mercedes Sprinter 3500XD/4500 (2WD/4WD) DRW
- Will not fit SRW vehicles
- Will not fit E-Sprinter models
- Will not fit models with ride height sensors
Kit Contents (All Models Include):
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2 Air Springs (Double Convoluted)
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Corrosion-resistant roll plates
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Precision laser-cut powder-coated steel brackets
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Grade 5 plated mounting hardware
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All required accessories for bolt-on install
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Detailed installation guide
Additional Items (PRO STM Models Only):
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6ft Braided Stainless Steel Air Lines
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Stainless Steel Air Spring Fittings
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Stainless Steel Schrader Valves
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Stainless Steel Mounting Hardware
Product Videos
Download Installation Manual
Standard Kit
Stainless Kit
