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When the back end starts to sag under a trailer or heavy bed load, steering and braking can get sketchy. This RoadActive Suspension kit adds up to 3,000 lbs of support to keep your ride level and steady when towing or hauling. The variable-rated coil tension springs automatically adjust to your load—activating when weight is added and disengaging when unloaded—so your truck stays balanced without a harsh ride. With less squat and better traction, you tow and handle with more control and confidence.
If you’ve ever felt your tires jump under throttle or your rear axle twist under a load, that’s axle wrap and wheel hop working against you. The RAS system converts your standard leaf springs into a mechanically active suspension that absorbs twisting force before it becomes wheel hop. The integrated tension springs distribute the load’s energy evenly through the leaf pack, keeping the rear end planted and reducing stress on shocks, shackles, and tires.
With a heavy trailer or camper pushing from behind, sway and body roll can make every curve feel risky. This setup strengthens your factory leaf springs so they resist twisting or flattening under weight. The result is tighter cornering, less rocking in crosswinds, and smoother highway tracking. You’ll notice the back end stays in line whether you’re navigating mountain grades or passing semis on the interstate.
Some suspension upgrades need constant adjustment or air checks—this one doesn’t. The RAS heavy-duty kit comes fully assembled with corrosion-resistant, epoxy e-coated steel components that bolt right onto your factory leaf springs using existing U-bolts. There’s no drilling, cutting, or welding needed. Once installed, it’s completely maintenance-free with no monitoring required, giving you lasting support without the upkeep.
Customer Satisfaction Score:
90% were satisfied with this product
10% of customers were not satisfied
Ratings & Reviews
Michael
8/1/2025
I still think these springs are one of the best aftermarket purchases Ive made for this truck. Obviously, different trucks will give different results, but for me not having to hassle with a WDH I just use a sway bar makes all the difference. Before the springs, I would towwith a WDH and sway bar and constantly felt the trailer behind me or felt I was floating in the front end. These springs have *almost* completely eliminated that. Amazing difference.
Lazer S.
8/1/2025
Richard
5/1/2026
1-year comments - As mentioned, traded the F-150 for a Tundra. RAS did make a noticeable difference in handling of the travel trailer and body roll of the truck even when not towing. I can only guess but would recommend going with standard model over HD as ride was stiff with light load in the truck and not towing. Upgrading the suspension on the travel trailer made the most difference in overall stability. New slightly higher rated leaf springs, Morryde equalizer, and wet bolts, combined to greatly lessen the body roll of the trailer which led to a much more stable drive especially with side wind loads. RAS is nice and worked to give the F150 more strength for when towing or when more heavily loaded. So still give it 4 stars.
Claire H.
5/1/2026
Brooke M.
5/13/2025
Really glad to hear that, James! The RAS is really good at its job for sure! Thanks for sharing the photo of your set up - the Airstream and truck are looking mighty fine! When's the next camping trip?
Heather A.
4/10/2025
Your install looks great! How is the RAS working for you?
Travice
4/18/2026
Best product i have spent mo ey on
Jeff
4/11/2026
The RAS is a great addition to the stock leaf springs on my F250. I have in the past year towed my 36’ Jayco travel trailer from Ontario to Nova Scotia and from Ontario to South Georgia. About 1700 miles total. From the 400 series highway the Trans Canada highway and the inter state highways the RAS along with the Fast Way E2 weight distribution and sway control system, my bumper tow is locked in and stable. The RAS reduces body roll on the tow vehicle eliminating the magnifying effect body roll has on the sway of the trailer. No white knuckling in cross winds or passing transport trucks on the interstate highways. Highly recommend to compliment the rear truck springs for towing heavy loads.
Kate F.
3/26/2026
Glad we had the part to get rid of the sag Allen! What kind of system do you have in the bed?
Brooke M.
6/24/2025
That's awesome, Art! Kudos to you for going ahead and tackling the job. Are you pretty comfortable with this type of work in general? The photos are great, too!
Jim
1/9/2025
Been a year now and I’ve pulled my 9200lb arctic fox trailer from Illinois to Halifax NS and back. The tongue weight was 870lb and the payload weight of the truck was maxed out from the Ford towing program and the CAT scale. The weight distribution hitch and this allowed for a very smooth ride even in the rain. The only issue was when the crosswinds were more than 10mph. The winds coming home out of Canada were 30mph and that was anxiety inducing especially coming across the mountains. Without the RAS I wouldn’t have even tried it. This was necessary to level the truck and have it track. I bought the trailer TPMS also because a blowout at that weight leaves no margin for error. Get the RAS for your light duty truck but don’t ignor your max weights. The rear axle weight was the limiting factor without the RAS and the WDH. The only drawback is the Ford headlight leveling sensor on the rear drivers side axle sits awfully close to the clearance of the shock and careful positioning is called for.
Victoria H.
3/12/2025
That's awesome Michael! I'm glad these made a noticeable different in your ride quality. Thank for including your valuable insight with your feedback along with the photos! I know this will be very helpful information to someone gearing up to install these in the future!
Paul
7/23/2025
It has worked out very well. Actually, better than I expected.
Jon G.
7/23/2025
Michael
12/25/2021
Its been a year since I installed my Roadmasters. Would I do it again? Absolutely! They have made my travel trailer pulling such a better experience. In addition, my daily commute has been a pleasure as well.
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Claire H.
9/15/2026
I'm glad to hear you're already feeling the difference with the RoadActive installed! What are you planning on towing/hauling that you wanted extra support for?