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Towing a trailer or hauling a heavy load can make the rear end sag and throw off your steering feel. This RoadActive Suspension Custom Leaf Spring Enhancement Kit adds up to 2,000 lbs of support to your rear suspension, converting factory leaf springs into a mechanically active system that keeps your ride level front to back. It strengthens your existing springs so they don’t flatten under weight, helping maintain traction, braking control, and proper headlight aim on the road.
When the back end starts to shift through curves or crosswinds, stability is everything. The variable-rated coil tension springs in this kit automatically adjust to your load, tightening up when weight increases and easing off when you’re empty. That active response reduces sway and body roll before they start, keeping your vehicle steady through corners and when a semi passes by on the highway.
Heavy loads can twist factory leaf springs enough to cause axle wrap or wheel hop that shakes the whole truck. This kit’s mechanically active design stops those problems at the source by absorbing load forces before they can build up. With the springs stabilized, you get smoother acceleration, surer braking traction, and fewer jolts when pulling out or climbing grades.
This custom kit comes fully assembled and bolts directly onto your existing leaf springs—no drilling, cutting, or welding required. Once installed, it’s completely maintenance-free and doesn’t need adjustments or air pressure checks. The epoxy e-coated alloy steel components and corrosion-resistant brackets (salt spray rated over 800 hours) hold up in all conditions, giving you lasting support without extra upkeep.
Customer Satisfaction Score:
85% were satisfied with this product
15% of customers were not satisfied
Ratings & Reviews
Mike L.
6/23/2026
Nicely done, Sam! Thanks for the photos, we always appreciate those!
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!
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Mike L.
7/25/2019
I spoke with my Roadmaster representative, and he explained that with this product, it is important to remember that it is designed to strengthen the existing leaf springs not resist and keep the vehicle perfectly level at all times. Anybody installing the kit should expect a little bit of give in rear leaf springs initially, then engage even more proportionate to and to counteract shifts in weight and uneven road surfaces, otherwise you’d expect a harsh ride to due lack of flexion in the leaf springs. Generally, if the vehicle is squatting up to 3-4 inches at the wheel well before installing the Roadmaster you should expect our kit to stay near level with somewhere between ¼’’ – 1’’ of give after installation. Beyond that, our kit will still help but from a load leveling standpoint it simply won’t be as noticeably effective. The vast majority of customers in the market for some sort of suspension enhancement product like this fall into this category. For the extremely heavy haulers & towers on the higher end of the spectrum that don’t want to purchase a bigger truck, they will usually tell them to go with an air bag set up.