2020-2025 Duramax Alpha HD Pro Air S Spring Suspension Kit (HP10585-J-S)

Fits

Note: Compatible with OEM 5th wheel hitches. /  Will not fit  Cab & Chassis models or vehicles with (aftermarket) Curt 5th wheel packages. / PLEASE NOTE: An additional 2” Air Spring Spacer (HP10152) is required on vehicles where the distance from the bottom of the metal jounce cup to the top of the strike plate is greater than 7.5”

The ALPHA HD PRO S air suspension kit for 2020-2025 Duramax trucks eliminates sag, sway, and bottoming out. It includes corrosion-resistant end caps, stainless steel hardware, and 20 support wires for durability. The kit features an internal polyurethane bumper to protect against damage and allows driving without air when not towing. Options now available with or without the in-bag bump stop for added versatility and ride comfort.

Part Number: HP10585-J-S

• 5,000 lbs of load leveling capacity
• 2 hour install time
• Lifetime warranty
• Can be run at 0 psi 

Includes:

• 6ft Braided Stainless Steel Air Lines
• Stainless Steel Air Spring Fittings 
• Stainless Steel Air Spring Mounting Hardware
• Stainless Steel Schrader Valves
• Stainless Steel Roll Plates
• Two Air Springs
• Everything required for install

• 2-Hours
• Stainless Steel Hardware
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• Additional Spacer Requirement
• Application Guide

• Never exceed manufacturer's recommended Gross Vehicle Weight Rating.
  

Why did Pacbrake add a bump stop to their bags?

Peace of mind. Customers want a bump stop to prevent bottoming out from loss of airbag pressure, an extremely rare event that could damage the airbags or potentially the frame of the truck. Think of it as an "insurance policy" against bottoming out.

An additional benefit is that you can run these airbags at 0 psi when unloaded for superior ride comfort.

Are bump stops necessary?

No! For those that require max travel in their air bags, to raise and lower their rear end to pickup trailers or boats, or for those that take their trucks off-roading, air bags without bump stops are recommended. Consider the HP10585 ALPHA HD airbag.

Parts Only

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