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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Heavy trailers, campers, or gear in the bed can drop your rear end and throw off your ride. The Hellwig EZ-990 Helper Springs add up to 2,000 lbs of load leveling capacity above your factory leaf springs to keep things even. They reduce sagging under light to moderate loads so steering, braking, and headlight aim stay where they should.
When wind or curves start pushing your truck around, these helper springs flex with your leaf springs to keep the back end stable. Their custom design helps reduce sway and body roll while towing or hauling, giving you a more planted feel through highway turns or uneven roads.
Not every load sits perfectly balanced. With the EZ-990, you can adjust the U-bolts separately on the driver’s and passenger’s sides to level out uneven weight. Whether one side’s carrying more tools or a spare tank, you can dial in the right tension for steady handling.
You don’t need a lift shop to add real support to your suspension. These helper springs bolt above your factory leaf springs with included mounting hardware. The easy install design fits right into a straightforward DIY setup with simple hand tools.
Hellwig’s steel construction and silver vein hammer tone powder coat finish hold up against corrosion and years of use. The setup extends the life of your factory suspension, tires, and brakes while giving you reliable support trip after trip.

Do not install on vehicles with composite (plastic) leaf springs.
Videos are provided as a guide only. Refer to manufacturer installation instructions and specs for complete information.
Hi there, I'm Michael with etrailer.com. Today we're gonna take a quick look at this Hellwig EZ 990 above axle helper spring set. So these are custom helper springs that will bolt on above the factory leaf springs on your vehicle. They're gonna help reduce your sway and body roll and prevent sagging when you're towing or hauling heavy loads. These are designed specifically to fit your 2005 through 2013 Toyota Tacoma Pre-Runner. So if you have a Tacoma, this is going to be a very simple installation onto your existing factory leaf springs.
These will flex with the factory leaf springs to help limit bouncing while also providing optimal stability. They do have a weight capacity of 2,000 pounds. Now when you hear that, it's tempting to think that means it's going to increase your vehicle's weight carrying capacity by 2,000 pounds. And that's not the case. So think of it less like a second set of hands that's helping you lift more weight.
Think of it more like a back brace. So it's there to help your factory suspension system take some of the strain off of it, help it to last longer for you so it will do a good job over a longer period of time and extend the life of your factory suspension, tires and brakes. It's very easy to get installed again because it is custom fit for your vehicle. All the mounting hardware is included as well as instructions to help you get it installed properly. One thing to note is that if you do have, if your vehicle has composite or plastic leaf springs, you're not gonna be able to use these as they are gonna be more durable than your factory springs and so it could cause damage to your factory springs.
So as long as you have steel springs, these are gonna do a great job for you. Now compared to like airbags, which most people think of when you think of suspension enhancement, most people are familiar with airbags, these are gonna have a lot less adjustability. So you can tighten the nuts here to give you a little bit more tension and support, but you're not gonna be able to add air and take air out like you would with airbags. So these are more kind of a set it and forget it sort of options. So if you don't wanna have the hassle of having to remember to add more air to your airbags and that sort of thing, these are gonna do a great job for you.
The U-bolts, as I said, can be adjusted to suit different loads. You can tighten those down a little bit. The driver side and passenger side can be adjusted independently for your uneven load, so kind of set it up for your system. But overall, less adjustability than with your airbags and that sort of system. These are made here in the USA of a durable steel construction, so they are gonna give you nice long lasting performance. They do have this silver vein hammer tone powder coat finish that's gonna help resist corrosion. So again, will last a nice long time for you. These do come with a lifetime warranty, so you can trust they're gonna hold up well, do a great job for you, help to extend the life of your factory suspension. And that completes our look for today. Again, I'm Michael with etrailer.com. Thanks for watching.
Ratings & Reviews

Robin H.
9/22/2026
Glad to hear it!

Gwendolyn Y.
6/17/2025
Nice set up, Eddie! How was your most recent camping trip?

Brooke M.
4/29/2025
Ooo! The light dusting of snow always makes me feel like going on an adventure -- love the photos! So happy to hear these have served you well in your travels :)

Carl
2/19/2026
I bought another pick up, so I took these off my old one and installed on my newer truck, still works absolutely great. Highly recommend.


Christopher H.
8/4/2026
Glad these worked well for your Dennis and thanks for including the video!

Heather A.
4/11/2026
We currently do not have a video of this being installed on the Raptor. Do you have any questions about the install? I am happy to help you.

Kenneth
6/5/2026
They work great. Truck is still at the proper height with the extra weight. There has been no loosening or adjustments needed.

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Lazer S.
4/28/2026
Glad to hear they are helping, Thomas! Looks like you have a pretty good amount of weight back there as well, so that's quite the compliment! ^___^ What kind of bike is that? Couldn't tell from the picture.