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A heavy trailer or bed load can make the rear end sag and throw off your steering and braking. The RoadActive Suspension Custom Leaf Spring Enhancement Kit adds up to 2,000 lbs of support to your existing leaf springs, instantly absorbing and supporting the extra weight. By keeping your ride level front to back, it helps maintain traction for safer braking and better headlight aim when you’re towing or hauling.
When curves, crosswinds, or passing trucks start to push you around, the variable-rated coil tension springs in this system step in. They automatically tighten as the load increases, reducing sway, body roll, and that uneasy rocking motion you feel when turning or towing a long trailer. The result is a more stable, planted ride with less fatigue on long drives.
Under a heavy load, leaf springs can twist or flatten out, causing axle wrap and wheel hop that make the truck jolt up and down. This kit stabilizes the springs by absorbing that twisting force before it becomes a problem. The design keeps your tires gripping the road, cuts down on bottoming out, and helps extend the life of your shocks, shackles, and even your tires.
This system bolts right onto your factory leaf springs with no drilling, cutting, or welding required. Each unit comes fully assembled with all hardware included. Once it’s set to your preferred tension during installation—such as about 40 percent for improved road handling—you don’t need to adjust or maintain it again. It simply works every time you load up.
Every piece of this kit is built to handle hard work and rough conditions. The high-grade alloy steel components have an epoxy e-coat finish for corrosion resistance, while the end brackets carry a salt spray rating of more than 800 hours. It’s durable enough for years of towing and hauling without worrying about rust or wear.
Videos are provided as a guide only. Refer to manufacturer installation instructions and specs for complete information.
Hello everybody, this is Jeff at etrailer.com. Today, we're gonna take a look at the Roadmaster Active Suspension Custom Leaf Spring Enhancement Kit for your rear axle. Now, this is a custom fit part, it is designed to fit the 1995 to 2001 Chevrolet Blazer and GMC Jimmy vehicles, also the 2004 to 2012 Chevrolet Colorado and GMC Canyon, and it does fit many other vehicles. What I would recommend for you to do is go to our website, use the fit guide, put in your year and model vehicle, and it'll show if this'll work for your application. Now, this custom kit will convert your vehicle's factory leaf springs into a mechanically active suspension system. It will actively strengthen your leaf springs for improved ride quality with or without a load, and it is an all-in-one suspension system that will improve stability, handling, and control, it eliminates the axle wrap, wheel hop, and bottoming out, it will reduce dangerous sway and body roll while you're cornering, it will even help keep your ride level when you're towing or hauling a heavy load, and it improves traction while you're braking and accelerating.
Now, it does use the variable-rated coil tension springs, which will automatically adjust to your vehicles load, they do activate immediately to support the extra weight, and they will disengage when they're unloaded allowing your leaf springs to perform as intended. The customizable coil springs can be adjusted during installation to accommodate your towing or hauling needs, and they are independently adjustable for side to side leveling of any off-center loads. This kit does help extend the life of your leaf springs, your shock absorber, shackles, and even your tires. These parts are durable epoxy e-coated steel construction, the corrosion-resistant brackets on the ends of each unit have a salt spray rating of more than 800 hours. And this is a very easy bolt on installation, there's no drilling, cutting, or welding required, it does come with a nice set of instructions that'll describe how installs and all the parts here.
But basically, what you'll do is position this eye hook bracket right on here on each end of the suspension, so that'll wrap around the top of the factory leaf spring eye, and then the axle bracket here will secure under your leaf spring and around the factory U-bolt on the other side of the leaf spring pack. This does come just like this, all fully assemble, all the hardware's included, and this is maintenance free, the adjustments and the monitoring aren't needed once it's installed. This part is made in the USA. Few specs on this, the weight capacity is 2,000 pounds. Now, one thing I do wanna mention is this Roadmaster Active Suspension will not increase your vehicle's weight carrying capacity.
But that should do it for the review on this Roadmaster Active Suspension, Custom Leaf Spring Enhancement Kit for your rear axle..
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!