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Heavy trailers or bed loads can make the rear sag and the front lift, throwing off traction and headlight aim. The RoadActive Suspension Custom Leaf Spring Enhancement Kit adds up to 2,000 lbs of mechanical support to your factory leaf springs so your ride stays level under load. The variable-rated coil tension springs automatically adjust to the weight, strengthening your stock suspension without changing unloaded ride quality.
Factory leaf springs only respond after the truck starts to squat or roll. This system converts them into a mechanically active setup that reacts instantly when weight is applied. The coil tension springs absorb load force energy right away, which prevents axle wrap, wheel hop, and bottoming out. The result is better traction when braking or accelerating and more control when towing or hauling heavy cargo.
When corners get tight or crosswinds push against a trailer, RAS keeps the rear end planted. By reinforcing your leaf springs, it minimizes sway and body roll so the truck tracks straight and feels more balanced through turns. It also cuts down on rocking or porpoising on rough pavement, giving a steadier, safer feel whether you’re towing or running empty.
The RAS units are made from high-grade alloy steel with an epoxy e-coat finish for long-term durability. Brackets on each end carry a salt-spray rating of more than 800 hours. Once installed, no adjustments or maintenance are required—just solid mechanical support every time you hook up the trailer or load the bed.
Each kit comes preassembled for straightforward installation using your factory U-bolts. There’s no drilling, cutting, or welding required. Bolt it on under your leaf springs, set your initial coil tension during install, and you’re done—no compressors or air lines to manage later.
RoadActive Suspension will not increase your vehicle's weight-carrying capacity.
Customer Satisfaction Score:
91% were satisfied with this product
9% of customers were not satisfied
Ratings & Reviews
Rachael H.
7/13/2018
Thanks for the info, I have spoken with my contacts at Roadmaster Active Suspension and they have not heard about this issue, but their development team is looking into it to see if they need to update the bolts included.
Sarah H.
8/2/2017
Hello David, I am sorry this product did not fit your truck. I spoke with our Roadmaster Techs and they told me this kit is not a fit for your truck since your truck suspension is not factory spec. This kit is only confirmed to fit the fit-guided vehicles with factory suspensions.
Anthony
8/28/2022
Fantastic! While my towing is within spec, these help so much with stability. After owning them for a year I know I made the right choice.
Eddie
5/14/2022
It’s working just like the first day great product
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Carl
8/24/2021
Not good. I removed them after a long trip. Going back to airbags that way when not towing I can let the air out. With RAS and trailer hooked up the truck rode like a dump truck. I would not recommend and would give it a one star rating. I feel like I wasted my money.