To see if this custom-fit item will work for you please tell us what vehicle you'll use it with.
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Packing for a weekend trip or hauling gear shouldn’t make your truck squat. The Pacbrake Alpha SD Air Bag Suspension Kit adds up to 1,800 lbs of rear axle support so your ride stays level and steady when towing trailers or carrying bed loads. Keeping the truck level improves steering response, braking control, and overall handling under load.
Heavy loads can make a truck bounce or sway more than it should. These sleeve-style air springs help smooth out rough roads and keep your setup stable. They absorb bumps and reduce that harsh “bottoming out” feeling that comes with stock suspension when overloaded, helping you stay comfortable while keeping control.
Every haul is different, and being able to fine-tune makes a big difference. The air bags adjust with pressure changes so you can dial in firmness when towing or drop pressure for everyday driving comfort. Whether you’re running empty or fully packed, you can keep your suspension balanced for a confident ride.
You don’t need a shop to get this system working. The kit is designed for easy installation using standard tools and clear diagrams. With straightforward routing for airlines and adjustable air fittings, DIY installers can get everything mounted cleanly and ready for the road without special equipment.
When you depend on your suspension day after day, durability matters. This Pacbrake kit is built for heavy-duty use with strong components designed to handle tough loads and frequent towing. It’s a dependable upgrade that keeps your truck level, stable, and ready for whatever you need to haul.
Videos are provided as a guide only. Refer to manufacturer installation instructions and specs for complete information.
Hi, everybody, Andy here with etrailer.com. Let's take a real quick look at this Pacbrake Alpha SD rear-axle sleeve-style airbag suspension kit. Now, this kit has been designed to fit your 2007 to 2018 Chevy Silverado and GMC Sierra 1500 for long truck beds in the two and four-wheel drive models. And on custom fit parts, such as this kit, I do recommend taking advantage of our vehicle fit guide here at etrailer.com. Simply input the year, make and model of your vehicle, and our fit guide will confirm if this kit will work for you or if we have something comparable that will work for you. Now, loading up your Silverado or your Sierra should not be something that's going to lead to sloppy steering, or poorly aimed headlights, or sketchy braking, but factory suspension can only do so much before the heavy loads start dragging everything down.
So this system is going to add up to 1,800 pounds of load support to your rear axle, keeping your stance level and your handling sharp. So what that means for you is better traction, safer braking and headlights that are gonna stay aimed where they belong, especially important when hauling at night or in rough weather. If you're moving work gear, or you're towing a small trailer, or packing for a weekend trip, you're gonna feel the difference in every mile that you drive. Now, as you know, no two hauls are gonna be exactly the same, and your suspension shouldn't be stuck in a one-size-fits-all setup. With simple manual inflation valves, you're gonna be able to dial in the air pressure from 10 PSI for empty cruising to 100 PSI when the bed is loaded or the trailer is hitched.
It's a fast, flexible way to get your truck back to level without guessing or setting for a rough, or settling for a rough ride rather. When your cargo changes, your truck's going to adapt. So what's great about it is no tools are gonna be necessary, no shop to visit, just smart, simple control that you can handle yourself. Now, heavy loads obviously are gonna demand extra support, but when the weight comes off, you still want your truck to drive like a truck, not like a brick. So again, thanks to the smart sleeve-style air-spring design, you're gonna be able to safely lower that pressure down when unloaded without losing control or beating yourself up on rough pavement.
So that's gonna be a smooth, predictable ride that you're looking for, whether your bed is stacked with cargo or empty and ready for weekend cruising. You're not gonna have to worry about constantly adjusting, you're not gonna have to worry about a clunky ride, just consistent comfort and control. These do feature precision laser-cut brackets that are gonna be designed to bolt cleanly to the frame of your truck to the existing mounting points without welding or drill in to your frame. You're just gonna use the included hardware to get this installed into place. As you can see, I do kind of have them loosely installed or loosely put together just to kind of give you an idea of what the setup's gonna look like.
And this kit is designed to work with your setup right now and wherever your upgrades take you tomorrow. So you can inflate manually with standard air valves right out of the box, no extra parts needed, but if you already have an onboard compressor, this is going to connect easily to most existing setups. If you're planning for an in-cab wireless controller down the road, that's not gonna be an issue because the foundation is already being built with this kit, making it easy to expand your control options when you're ready. So again, I said that the load support is up to 1,800 pounds, but I do wanna make you aware of the fact that these air springs do not actually increase your truck's weight-carrying capacity. So you do wanna make sure that you're not exceeding your manufacturer's recommended weight limits for your truck. If you do pick this kit up, we would love to hear back from you regarding the installation and the operation. You can share your experiences with us by dropping a comment or leaving a review on this product page. We'd love to hear back from you. If you have any additional questions that I didn't cover with you today, feel free to give us a call and we'd love to talk to you and answer any questions that you might have. Well, that's gonna wrap up our look today. I do hope that it was helpful for you. Again, my name is Andy. Thank you for joining me.
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Brooke M.
6/16/2025
Glad to hear that, Rob :) Everything looks great. What do you tow where you like having the extra suspension support ?