To see if this custom-fit item will work for you please tell us what vehicle you'll use it with.
Heavy trailers, campers, or bed loads can make the rear end sag and throw off your handling. The Hellwig EZ-990 Helper Springs add up to 1,500 lbs of load-leveling capacity to keep your truck sitting level and stable when towing or hauling. By working with your factory leaf springs, they cut down on rear squat so your steering, braking, and headlight aim stay steady under load.
When bumps or uneven roads start tossing your truck around, these helper springs flex right along with your leaf pack to reduce sway and body roll. The single-leaf design installs below the axle, giving you extra support without a harsh ride. It helps limit bounce and keeps the rear end planted so you stay in control through corners, crosswinds, or rough pavement.
You don’t need a full shop to get these springs installed. The EZ-990 kit bolts below your factory leaf springs using the included mounting hardware—no complicated setup required. It’s a straightforward project with simple tools and clear mounting points that make it ideal for do-it-yourselfers wanting a quick weekend upgrade.
Hauling gear isn’t gentle on suspension parts, so the EZ-990s are built from tough steel for long-lasting performance. They’re finished in a silver vein hammer tone powder coat that resists corrosion from road grime and weather. Once installed, they deliver consistent support trip after trip without constant maintenance or adjustments.

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, everybody. Andy here with etrailer.com. Let's take a look at these Hellwig EZ-990 Helper Springs. Now, these are custom designed to fit your 2014 and newer Ram ProMaster 1500, 2500, and 3500. And on custom fit parts such as these 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 1500 pounds will upgrade your factory leaf springs, installing below your ProMaster's rear factory leaf springs to reduce sway and body roll, while also, at the same time, preventing sagging when towing heavy loads. Now, they're going to 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. Now, these springs are made here in the USA of a durable steel construction, which is going to ensure long-lasting performance. And just to give you a brief zoom in here, overhead one of these springs, I just wanted to show you that these do feature a silver vein hammer toned powder coat finish.
And that finish is going to do a great job of resisting corrosion. And this is a bolt-on installation, again, below your ProMaster's rear factory leaf springs. Mounting hardware is included. And as you can see, I kind of have it loosely assembled just to kind of give you an idea of what these are going to look like installed on your ProMaster. So it does include the hardware that you're going to need to successfully install these, along with instructions to guide you through that installation process.
I do want to point out that you don't want to install these on vehicles with composite or plastic leaf springs, because these are so robust and durable. That could potentially damage your plastic or composite leaf springs. So again, if your vehicle does have composite or plastic leaf springs, these helper springs will not be compatible with that. So again, these do have a weight capacity of 1500 pounds. I do wanna point out that Hellwig Helper Springs do not actually increase your vehicle's weight carrying capacity.
And these do have a lifetime warranty from Hellwig. 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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