SKU: 27964944026

2007-2026 Sprinter 3500XD/4500 DRW AlphaHD Pro Rear Air Suspension Kit (HP10391-J)

$384.11 $426.79
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Ships within 48 hours · Estimated delivery Jul 28 - Aug 2

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Description

2007-2026 Sprinter 3500XD/4500 DRW AlphaHD Pro Rear Air Suspension Kit (HP10391-J)Description Note: Will NOT fit SRW vehicles Will NOT fit E Sprinter models Will NOT fit models with ride height sensors. Will fit both Gas Diesel applications Tired of truck sag, sway and bottoming out? Say goodbye to these problems with the ALPHA HD PRO from Pacbrake! These air bags air helper springs (with Jounce Bumpers Bump Stops) come with inch thick corrosion resistant end caps and 20 support wires for ultimate strength and durability. This kit

Description

Note: Will NOT fit SRW vehicles/ Will NOT fit E-Sprinter models/ Will NOT fit models with ride height sensors. Will fit both Gas/Diesel applications

Tired of truck sag, sway and bottoming out? Say goodbye to these problems with the ALPHA HD PRO from Pacbrake! These air bags/air helper springs (with Jounce Bumpers/Bump Stops) come with inch-thick corrosion-resistant end caps and 20 support wires for ultimate strength and durability.

This kit features a bouncy polyurethane bumper in the bag to avoid damages caused by bottoming out. Perfect for those who want the peace of mind of having an internal bumper and covet the ride comfort of being able to run without air when not towing.

Customers will now have a choice to buy a Pacbrake air suspension kit with or without an-in bag bump stop.

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 HP10391 ALPHA HD air bag.

Part Number: HP10391-J

Features
  • 5,000 lbs of load leveling capacity
  • 2 hour install time
  • Lifetime warranty
  • Can be run at 0 psi
Notes
  • Never exceed manufacturer's recommended Gross Vehicle Weight Rating.
Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 27964944026

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4.9 ★★★★★
Based on 28 reviews
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Product Reviews
A
Verified Purchase
Amazon Customer
San Leandro, US
★★★★★ 5
Son loves them!
Size: Large, Color: Black (6-pairs), Number of Items: 6
My son loves these socks! Comfy, good quality.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 20, 2026
T
Verified Purchase
Tori M
Fort Morgan, US
★★★★★ 5
Good fabric
Size: Medium, Color: White, Number of Items: 6
Nice socks. Would buy again.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 23, 2026
S
Verified Purchase
Sarge Howell
Dallas, US
★★★★★ 4
Quality and durable socks
Size: Large, Color: White (6-pairs), Number of Items: 6
Great quality socks. This pack was a lot taller on the cuff and bigger than previous batches I have had. Not sure what the change was, but giving it 4 instead of 5 because I preferred the smaller shorter ones they previously made. But these are great quality socks, and last a long time.
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Reviewed in the United States on February 8, 2026
R
Verified Purchase
Rafael Mota
Grantham, US
★★★★★ 5
A Game-Changer for Comfort
Size: Medium, Color: Black, Number of Items: 6
I recently upgraded my workout gear with the Under Armour Training Cotton Quarter Socks, and I must say, these socks have revolutionized my exercise experience. Comfortable, durable, and stylish, they truly stand out in the crowded world of athletic socks. First and foremost, the comfort level of these socks is unparalleled. The blend of cotton and synthetic materials provides a soft and plush feel against my feet, making every step a pleasure. The quarter length strikes the perfect balance, offering ample coverage without being too restrictive or too short. It's like walking on clouds, even during the most intense workouts. One of the standout features is the moisture-wicking technology. I've worn these socks during high-intensity cardio sessions, and they have consistently kept my feet dry and comfortable. The breathability is remarkable, preventing that uncomfortable feeling of sweaty feet that often accompanies strenuous workouts. No more distractions – just focus on pushing through your fitness routine. Durability is another strong suit of these socks. After numerous washes, they maintain their shape and elasticity, showing no signs of wear and tear. The reinforced heel and toe areas provide extra support, ensuring longevity and preventing the dreaded sock holes that often plague other brands. The sleek design of the Under Armour Training Cotton Quarter Socks adds a touch of style to my workout attire. The subtle logo and choice of colors make them versatile enough to pair with any athletic shoes. Whether you're hitting the gym, going for a run, or simply running errands, these socks seamlessly blend fashion with function. In terms of sizing, I found that they fit true to size. The elastic band around the arch provides a snug yet comfortable fit, ensuring that the socks stay in place throughout any activity. While the price point may be slightly higher than some other options on the market, the quality and performance of the Under Armour Training Cotton Quarter Socks more than justify the investment. When it comes to comfort, durability, and style, these socks have become an indispensable part of my workout wardrobe.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 3, 2024
S
Verified Purchase
Shayla Garrison
Charlottesville, US
★★★★★ 5
good medium rise sock
Size: Large, Color: Black (6-pairs), Number of Items: 6
love a good under armour sock!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 2, 2026

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