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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
Installation Video
Shipping & Returns
- This product ships to the US and Canada. Canadian orders may incur customs, import duties, and brokerage fees. Please review our shipping policy. To estimate these potential additional costs, we recommend using this calculator.
- This product typically ships within 1 to 3 business days.
- Returns are accepted within 30 days for items in like-new condition. For complete details, please see our return policy.
