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When hauling heavy gear or towing, rear-end sag can throw off your handling and braking. The RoadActive Suspension Custom Leaf Spring Enhancement Kit turns your factory leaf springs into a mechanically active system with up to 2,000 lbs of load support. The variable-rated coil tension springs automatically adjust to the extra weight, keeping your ride level and stable whether you’re towing a camper or hauling tools. With the back end sitting right where it should, steering feels consistent and braking stays predictable.
Heavy loads can make your rig sway through turns or lean on curves. This system strengthens your leaf springs to reduce body roll and sway before they even start. The tension springs react instantly to shifting weight, keeping the rear planted when cornering, swerving, or battling crosswinds. You’ll notice steadier tracking on the highway and more control through uneven roads without adding stiffness when unloaded.
When weight pushes down hard on the rear axle, leaf springs can twist and let the tires hop under acceleration. The RAS kit stops that motion by absorbing the load force energy before it reaches the axle. That keeps traction consistent, even when braking or climbing steep grades, while also cutting wear on shocks, shackles, and tires. It’s a simple way to smooth out power delivery and extend the life of key suspension parts.
Installation is straightforward—no drilling, cutting, or welding required. Each unit bolts under the leaf spring and around the factory U-bolts using the included hardware. Once installed, it’s maintenance-free with no adjustments or monitoring needed. The high-grade alloy steel construction and epoxy e-coated finish provide corrosion resistance with bracket coatings tested to more than 800 hours of salt spray exposure. This system is built for long-term strength you can set up once and trust for years of hauling and towing.
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!