2018-2026 Duramax Alpha XD Pro S Air Spring Kit (HP10373-X-J-S)
Description
Fits
| Year | Make | Model | Engine |
| 2018-2026 | Chevrolet | 4500HD/5500HD/6500HD Silverado 2WD/4WD | 6.6L Duramax |
| 2018-2026 | International | CV Class 4/5 Trucks | 6.6L Duramax |
Note: Will fit both Gas/Diesel applications. / ALPHA XD kits (-X / -X-J) are not compatible with Pacbrake’s 2” / 4” / 6” Air Spring Spacers.
The ALPHA XD PRO S Air Spring Kit from Pacbrake addresses truck sag, sway, and bottoming out. It includes air helper springs with bump stops, stainless steel hardware, and corrosion-resistant end caps. Built with 20 support wires and a polyurethane internal bumper, it offers durability, prevents damage, and maintains ride comfort even without air pressure when not towing. Options are available with or without the in-bag bump stop.
Part Number: HP10373-X-J-S
Features
- 7,500 lbs of load leveling capacity
- 2.5-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
Installation
Notes
- Never exceed manufacturer's recommended Gross Vehicle Weight Rating.
Additional Info
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 air bags 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 HP10373-X ALPHA XD air bag.
Warranty
Parts Only
Original: $576.55
-65%$576.55
$201.79Product Information
Product Information
Shipping & Returns
Shipping & Returns
Description
Description
Fits
| Year | Make | Model | Engine |
| 2018-2026 | Chevrolet | 4500HD/5500HD/6500HD Silverado 2WD/4WD | 6.6L Duramax |
| 2018-2026 | International | CV Class 4/5 Trucks | 6.6L Duramax |
Note: Will fit both Gas/Diesel applications. / ALPHA XD kits (-X / -X-J) are not compatible with Pacbrake’s 2” / 4” / 6” Air Spring Spacers.
The ALPHA XD PRO S Air Spring Kit from Pacbrake addresses truck sag, sway, and bottoming out. It includes air helper springs with bump stops, stainless steel hardware, and corrosion-resistant end caps. Built with 20 support wires and a polyurethane internal bumper, it offers durability, prevents damage, and maintains ride comfort even without air pressure when not towing. Options are available with or without the in-bag bump stop.
Part Number: HP10373-X-J-S
Features
- 7,500 lbs of load leveling capacity
- 2.5-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
Installation
Notes
- Never exceed manufacturer's recommended Gross Vehicle Weight Rating.
Additional Info
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 air bags 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 HP10373-X ALPHA XD air bag.
Warranty
Parts Only
