1988-2000 GM Sierra/Silverado Alpha Pro S Air Suspension Kit (HP10120-J-S)

Note: For C Channel Frames / Will not fit 1999-2000 Chevrolet Silverado / GMC Sierra 2500 (2WD/4WD) models without Drum Brakes / If the frame to axle pad distance is 7.25'' or more: use kit HP10088

The ALPHA PRO S Air Suspension Kit for 1988-2000 GM Sierra/Silverado tackles truck sag, sway, and bottoming out. It includes durable air helper springs with corrosion-resistant end caps and 20 support wires. The built-in polyurethane bumper protects against damage and allows driving without air when not towing. Available with or without an internal bump stop for added convenience and ride comfort.

Part Number: HP10120-J-S

• 5,000 lbs of load leveling capacity
• 3-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

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• Click Here - Stainless Steel Hardware
• Application Guide

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

Why Pacbrake added a bump stop to their bags?

Peace of mind. Customers want a bump stop to prevent bottoming out from loss of air bag pressure, an extremely rare event that could damage the air bags 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 HP10120 ALPHA HDair bag.

Parts Only

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