SumoSprings Custom Helper Springs - 2 Piece - Rear Axle
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2005 Buick Terraza
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2005 Buick Terraza
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Heavy trailers and bed loads can make the rear end sag and throw off handling. These SumoSprings helper springs add up to 2,000 lbs of support at 50-percent compression to keep your ride level when towing or hauling. They help your factory suspension carry the weight evenly so steering, traction, and braking stay consistent. With the truck sitting level, your headlights aim correctly and your ride feels more stable under load.
Whether you’re hauling a few tools or a full load, the springs adjust automatically to match the weight. Lighter cargo compresses them easily for a softer ride, while heavier loads bring up to 80 percent compression for firm support. That progressive action helps absorb bumps and shocks without making the unloaded ride harsh, keeping your suspension responsive on rough roads or long trips.
The two-piece setup lets the suspension move freely when unloaded or off-road. Each spring section mounts to the frame and axle separately, meeting only when weight pushes down on the rear end. That separation allows unlimited suspension travel for a smoother feel when empty and solid support when loaded. It’s a simple design that keeps your truck comfortable every day and steady when it’s working hard.
Each spring works on its own side to handle uneven loads and sharp turns. That independent movement helps cut down body roll and sway so you stay planted through curves, crosswinds, or unlevel driveways. You’ll notice better control and less rocking when towing or carrying cargo that’s off-center in the bed.
Made from durable microcellular urethane, these springs resist oils, salts, UV rays, and extreme temperatures from -25 F to 200 F. They compress vertically with minimal side expansion so they fit tight spaces without rubbing nearby parts. There are no airlines or compressors to maintain—just a simple bolt-on install with jounce-style springs and hardware included for dependable support every time you load up.
Videos are provided as a guide only. Refer to manufacturer installation instructions and specs for complete information.
Hi everybody, Andy here with etrailer.com, and today, we're gonna take a look at the SumoSprings Custom Helper Springs for your rear axle. Now, this is a custom fit product that is going to fit the 2008 to 2013 GMC Sierra 1500 and Chevrolet Silverado 1500, and then the 2014 to 2018 GMC Sierra 1500 and Chevrolet Silverado 1500 two-wheel and four-wheel drive, and then the 2019 GMC Sierra 1500 Limited and the Chevrolet Silverado 1500 Limited two-wheel and four-wheel drive, and then finally, the 2007 GMC Sierra New Body 1500 and the Chevrolet Silverado New Body 1500. To confirm if these are going to work for your vehicle, please take advantage of our vehicle fit guide on our website at etrailer.com and input the year, make, and model of your vehicle, and our fit guide will let you know if these will fit your vehicle. Now, SumoSprings Helper Springs are great for pickup trucks. Towing or hauling a heavy load can cause sag as your factory suspension compresses under the weight of the load, and that means that the rear axle is trying to support not only the extra load, but also your truck's weight, and because there is less weight on your front axle, your front tires make less contact with the road, which causes problems with traction, steering, and braking. SumoSprings upgrade your factory suspension to level your vehicle, improving driving performance and keeping your ride comfortable.
The innovative 2-piece design of these springs allow for unlimited suspension travel, this means that there will be more movement in your suspension when you are unloaded or off-roading, which is gonna make your ride smoother and more comfortable. These springs feature progressive load control, and what that means is they are going to compress according to the weight of your cargo. For lighter loads, the spring compress easily at first for soft engagement and less bumpy ride, and for heavier loads, the springs compress by as much as 80% for support. Now, these springs work independently from each other to compensate off-center loads and reduce body roll during sharp turns. These are made in the USA of durable microcellular urethane, they are going to work in temperatures from -25 degrees Fahrenheit to 200 degrees Fahrenheit, and they will resist damage caused by oils, road salts, and UV rays.
They have minimal lateral expansion, the springs expand and compress vertically instead of to the side, so they aren't easily damaged when operating in tight spaces. Another nice thing about these springs is they are maintenance-free, no tubing to run or air pressure to monitor like with air springs. It's gonna be an easy bolt-on installation, and it includes everything that you see on my table in front of me. You're gonna get the two jounce-style springs, the custom fit brackets, and all of the necessary hardware that you're going to need to successfully install these, and then you're also going to get instructions to walk you along and guide you step-by-step during the installation process. Well, that's gonna conclude our look today, I do hope that it was helpful for you.
Again, my name is Andy, thank you for joining me..
Ratings & Reviews
Brooke M.
6/18/2025
Definitely less moving parts to worry about than airbags :) The install looks great! Are you hitched up in the photo to test out the springs or were you actually on your way to the water?
Victoria H.
4/8/2025
Thanks for your feedback Chris, this is valuable insight for future shoppers! Good to hear they're getting the job done as like you wanted. It's always nice when you don't have to spend the first few minutes at your campsite, picking up everything off the floor of your camper. Any upcoming adventures planned?
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Donald
10/8/2026
Cant believe its been a year since I installed the SumoSprings. Every time I go around a corner I so appreciate the excellent handling I now have. The Sumos have earned their 5th STAR!