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When towing or hauling, rear-end sag can throw off your steering and braking. The RoadActive Suspension kit adds 2,000 lbs of load support by turning your stock leaf springs into a mechanically active system. As the weight increases, the variable-rated coil tension springs automatically adjust to keep your ride level and stable. That means no more squatting when you tow a trailer or load up the bed—just steady handling and confident control.

Sway and body roll can make towing or cornering feel sketchy. Each RAS unit uses a variable-rated coil tension spring that reacts instantly to shifting weight, reducing sway and body roll before they start. The setup strengthens your factory leaf springs so your vehicle stays planted through curves, turns, and windy conditions. You’ll notice less rocking when passing trucks go by and more control when the road bends.
Heavy loads can twist leaf springs and cause wheel hop that makes your tires lose grip. The RAS design absorbs that extra force, preventing axle wrap and keeping traction where you need it—on the road. That not only improves braking and acceleration but also helps extend the life of your shocks, tires, and other suspension parts.

This all-in-one kit comes fully assembled for an easy bolt-on install—no drilling, cutting, or welding required. Once set up, it needs no adjustments or ongoing maintenance. The coil springs have an epoxy e-coat for corrosion resistance, and the brackets carry a salt spray rating of more than 800 hours, so they can handle real-world weather without a problem.

Videos are provided as a guide only. Refer to manufacturer installation instructions and specs for complete information.
Hi everybody, Andy here with etrailer. Let's take a quick look at this Road Active Suspension Custom Leaf Spring Enhancement Kit. Now this kit has been specifically designed to fit your 2003 to 2014 Dodge Ram, both the 2500 and 3500s, then your 2010 and newer Ram 2500 and 3500, both the two wheel and four wheel drive models. Now on custom fit parts such as this kit, I do recommend taking advantage of our vehicle fit guide here at etrailer.com. Just input the year, make, and model of your vehicle and our fit guide will confirm if this will work for you or if we have something comparable that will work for you. Now, when you are towing heavy trailers or carrying heavy loads, nothing's more frustrating than a vehicle that sags or sways.
Now this road active suspension kit is going to transform your standard rear leaf springs into a dynamic support system with a 2000 pound load leveling capacity. So the coil tension springs that you see here, they're going to automatically adjust to your load, maintaining stability and ensuring that your ride stays level and secure. As you probably know, there's nothing more unsettling than feeling your vehicle lurch and hop when accelerating or braking under a load. With the RAS system, axle wrap and wheel hop are going to be a thing of the past. This is gonna stabilize your rear axle by absorbing the load force energy, meaning better control and less wear on your Ram.
Now your trailer's gonna stay in line and that jarring up and down motion on uneven roads is gonna be greatly reduced. And then, maneuvering around tight corners with a loaded trailer, as you know, can be a daunting task when you're battling sway and body roll. This system's gonna reinforce your leaf springs reducing sway and keeping your vehicle stable as you navigate those turns. So no more fearing a shift in your load. You're gonna feel confident and safe knowing that this system's gonna help prevent roll, whether you're towing or simply dealing with windy conditions.
Now, if you are frequently carrying uneven loads, this system is going to provide a solution. With its adjustable coil tension springs, you're just going to adjust the tension settings during insulation to accommodate different load distributions. That's going to ensure that both sides of your vehicle are evenly supported, enhancing handling and safety even with off-center cargo. So you're gonna be able to forget the hassle of air springs or hydraulics that require constant monitoring. This system is going to bolt directly onto your rear axles leaf springs, and once it's on, there are no adjustments or upkeep needed.
This is gonna be a straightforward, robust enhancement to ensure that your suspension always performs its best, whether you're loaded or empty. Now, this again, will give you a 2000 pound capacity, but do keep in mind that this does not actually increase your vehicle's weight carrying capacity, so you wanna make sure that you're not exceeding your manufacturer's recommended weight limits. If you have any other questions, whether it's about this system or anything else that we carry, don't hesitate to reach out to us 'cause we wanna make sure that you're getting exactly what you need. Well, again, my name is Andy. Thank you for joining me.
Ratings & Reviews

John
9/14/2026
Well It has not failed me yet. Being basically a spring under load all the time I am assuming the spring will stretch some over time and I will have to adjust tension accordingly. The pickup sits nicely on the thinner washer setting so I am leaving it there and hopefully that will help the system last longer.

Brooke M.
6/25/2025
Looks great, Les :) I hear lots of good this about this option for suspension enhancement and how you said, even without towing it can improve the ride quality. Glad to know that you are happy with them, too! do you have any upcoming camping trips planned?

Gwendolyn Y.
7/23/2025
That's a long trek, so I'm glad these helped you along the way! Do you take that trip often, Elden?

Sergio J.
8/13/2021
What can I say. After a year of constantly driving through Texas roads and highways. I have moved twice and loaded the bed of my truck plus U-Haul 6x12 trailer and thy truck has not felt the load of it. The Active Road Suspension Leaf Spring is constantly sort of speak sensing if theres load so it can actively push it upwards. I have even driven up to the crazy roads of Pennsylvania and my pick drives smoother than when I got it from the dealer. Im telling you these things work. As any cautious driver upkeeping his own vehicle, I have periodically checked the bolts and location of the resistance in between the spring and it has not deflected or moved from its original installation. I believe every pick up must have these. It beats constantly putting air on the air bags especially in inclement weather like up here in Pennsylvania with the snow. I couldnt be more satisfied with this purchase. Thank you etrailer for offering this superb product.

Sergio J.
8/16/2021
Just like when I bought it.

Miguel
7/10/2022
Its been working very well i loaded a couple of times and its awesome

Rick M.
3/27/2022
After a year I am still pleased with this product. I had been adjusting the spring tension higher when towing and then back down after a trailering trip, but now just leave it adjusted to the trailer towing tension as the unloaded ride doesnt seem to suffer when the springs are tighter.

Rich
3/10/2021
Still working great. Towed a Flaggstaff microlite 23LB Travel trailer prob between 5 and 5500 LB’s to Niagra Falls with no problems, truck sat level with trailer and 2 adults,2kids. Getting ready to make a 2,000 mile round trip to disney in florida in a few weeks.

William
3/30/2021
Makes the ride a little stiffer but its a truck. Great when pulling my 37 camper. Helps out a lot!!!!

Russell
9/2/2023
OMG!! I have done extensive traveling with my trailer over the last year and the RAS system has made a huge difference in sway, road buffeting and squat. I can’t imagine not having this on any vehicle that tows!

Michael
7/7/2023
Removed the Suspension Enhancement and installed Airlift. Cost more but rear-end isnt sagging 4.
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Mike L.
6/23/2026
Nicely done, Sam! Thanks for the photos, we always appreciate those!