To see if this custom-fit item will work for you please tell us what vehicle you'll use it with.
When you’re towing a light trailer or hauling gear that makes the rear dip, these Hellwig EZ-990 Helper Springs add up to 2,000 lbs of load-leveling capacity. They mount above your factory leaf springs to keep your suspension from sagging, helping steering and braking feel steady even when the bed or hitch is carrying extra weight. The truck stays level and controlled instead of squatting under the load.
Every bump or sway under load can make driving tiring. These helper springs flex with your factory leaf springs to limit bounce and body roll, keeping the ride smooth and stable. By sharing the load with your stock suspension, they help extend the life of your original springs, brakes, and tires while giving you a planted, confident feel on the road.
No two loads are exactly the same. The Hellwig EZ-990 uses adjustable U-bolts so you can dial in extra support for heavier hauls or back it off for lighter ones. Each side can be set independently to balance uneven cargo—perfect when one side of the bed carries more weight than the other. It’s a simple way to tailor handling and keep things level no matter how you pack or tow.
Installing these helper springs is straightforward thanks to their easy bolt-on design and included mounting hardware. Once in place, the durable steel construction delivers long-lasting performance, while the silver vein hammer tone powder coat finish helps resist corrosion from weather and road grime. You get solid suspension support built for years of dependable use.
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 look at these Hellwig EZ 990 Helper Springs. Now, these helper springs are designed to fit your 1999 to 2000 GMC Sierra 1500 and Chevrolet Silverado 1500. Then your 2001 to 2006 GMCC Sierra 1500 LD. And then your Chevrolet Silverado 1500 LD.
And then finally, your 2007 GMC Sierra Classic 1500 LD. And your Chevrolet Silverado Classic 1500 LD. On custom fit parts such as these helper springs, 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 these will work for you, or if we have something comparable that will work for you. Now, these custom helper springs with a load leveling capacity of 2000 pounds are going to upgrade the factory leaf springs on your truck, installing above your truck's rear factory leaf springs to reduce sway and body roll, while preventing sagging when towing or hauling your light lighter loads.
Now, they will extend the life of your factory suspension, tires, and brakes. And these springs will flex with your leaf springs to limit bouncing, while providing optimal stability. These U-bolts that you see here on the side, they can be adjusted to suit different loads, and the drivers and passenger sides can be adjusted independently for uneven loads. These springs are made here in the USA of a durable steel construction, which is going to ensure long-lasting performance. They do feature a silver vein hammer toned powder coat finish that's going to resist corrosion.
And this is going to be a bolt-on installation, again, above your truck's rear factory leaf springs. And the mounting hardware is included. And as you can see, I just have it kind of loosely assembled here, just to give you an idea of where these U-bolts, along with the hardware, is going to go when you install these on your truck. Now, I do wanna point out that these are not compatible on trucks that have a composite or plastic leaf springs. Because these are so robust and heavy duty, it's possible that they could crack or completely damage those composite or plastic leaf springs.
So if you have those type of leaf springs on your truck, this will not be compatible with that. Again, the weight capacity is 2000 pounds. However, I do want you to be sure to know that these Hellwig Helper Springs do not actually increase your truck's weight carrying capacity. Hellwig does give you a lifetime warranty on this system. And 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.
Ratings & Reviews
Some of the nuts were difficult to start onto the u-bolts, tried to strip the threads
Completely helped the squating rear on 350xl transit box truck with dual rear wheels. Improved ride and handling when loaded. Rides smooth and looks like it is supposed to.
This is exactly what we needed to finish our customer's job. This shipping was so quick. Thank you all so much!!
Parts ordered, shipping box was compromised, missing parts to do the install.
Now i need to fab a square u-bolt to use the product like i planed this weekend.
Ez-990 helper springs sagged with 800lb camper and bottomed while driving over speed bumps unless creeping. Unloaded there was noticeable tightness, almost binding feeling on bumps. I removed and checking options like airbags or Sumo.
These work great. Very easy install. I have a bed slide and a camper top, and these brought the rear back up to the proper height.
I was a great addition to my RST 1500 Chevy and I transferred to my High Country 1500 Chevy and never missed a beat towing the travel trailer.
This lifted the back of my tacoma perfectly. I usually drive around with about 600lbs of tools in the bed under my 150lbs cap. No more squatting!
Great product. Quick shipping. Would buy here again.
Product seems good, instructions are terrible . Can't find a video with my product for install anywhere .
Easy to install, very effective and didn’t have much effect on ride quality. Mine worked on the lowest setting with a 16’ camper.
These springs eliminated the rear sag from adding a shell, rubber bed mat, and a little gear.
Easy to install as well, but recomend having a 7/16X20 tap/die to clean threads on supplied u-bolts.
Loaded my tacoma with a portaboat on the ladder rack and a few hundred pounds of camping gear. The sag was gone after installing these. The ride is a little bit stiffer when empty as to be expected but not bad even on washboard dirt roads. These can be fairly easily installed and removed if desired. Hardest part is jacking up the truck to sit on the frame
Easy to install. It should help stabilize the rear springs when I tow our boat.
Well they work great. I currently have 4 of second round of nuts that are supposed to be installed. Not catching. Which is frustrating cause I hand started all but can’t get 2 round of nuts on.
The product fit well and installed would have been a breeze if it wasn’t for the hardware. The u bolts are very poor quality with burrs and poorly tolerances threads. In addition only half the hardware was the correct size. One set of nuts was too big for the u bolts. The hardware was also low quality. In my opinion it should have all been grade 8 corrosion resistant hardware and it is much lower grade. I ended up having to buy all new hardware to be able to install at an additional cost. Now that it is installed the product works fantastic. Just be aware you may need to purchase extra hardware to get it installed.
Helper springs made my Ram 1500 Conversion Van have a more comfortable ride. The springs raised the profile of the back of the van by about 1-1/2", which is not noticeable and the van still looks good. My RV Travel trailer lowered the back half of the van by about 1", before I installed the helper springs. The helper springs should enhance the ride of the van.
U bolts are to long and would not allow the prop tightening.
Hellwig customer service advices to shim with washers.
Poor recommend repair.
The springs lifted my Tacoma with a cap about an inch higher. It would have been more helpful if the directions indicated that a C-Clamp would be useful to compress the spring ends to allow the u-bolts to be installed. The directions also indicated the long end of the spring should face forward. I measured the spring from the end to the hole and this was the same either way, so was confusing. I purchased longer axle u-bolts since the added thickness of this extra spring made the factory u-bolts too short IMO. I feel that should have been part of this kit. Lastly, the u-bolt on the driver's side did not need to be installed sideways per the instruction. It fit fine just as the other u-boults were installed. Maybe the instructions could be updated to be more accurate.
Easy install great fit. Readjusted for our new trailer in 10 minutes and working wonderfully.Leveled the truck and rides smooth..
Easy to install, does not affect the ride much , worked great pulling my fish house to the lake. I showed my helper springs to one of my customers, gave him the part number for his truck and he ordered them from e-trailer today. Great product.
It added lift to the truck and helps greatly when towing our 23 foot Travel Trailer.
It worked perfectly for my needs. It helped my 2011 Silverado from sagging too much without raising the backend of the truck much (1/4 to 1/2) while empty. I can adjust this added spring to have less sag but then I raise the backend a little more. It's at a happy medium. It is easy to fine tune it if I want more or less spring support.
Received this relatively fast. Great condition. Very easy to install one a Tacoma.
Way better than expected. Huge difference in the rear suspension. It’s almost like having a sway bar.
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