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(RAS®) RoadActive Suspension 3611-SHD | Fits Ford F250/F350 2011-2024 [Without Factory Top Overload Spring]

5.0 (6) Write Review
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$589.00

$ 99 .00 $99.00

In Stock

About this item

  • Authentic Made In USA RoadActive Suspension HD rear leaf spring upgrade by (RAS)RoadActive Suspension. Only listings with the RAS mark are Made In USA with premium rigorously tested and proven for durability since 1998. Don't trust low-quality imports.
  • Eliminates Squat & Reduces Bounce – Reinforces rear leaf springs by up to 50% for superior towing and hauling performance.
  • Unmatched Ride Quality & Stability – Maintains a smooth, controlled ride whether loaded or unloaded—no stiff suspension like other add-ons.
  • 3-in-1 Suspension Upgrade – Functions as a helper spring, sway bar, and traction bar in a single, cost-effective solution.
  • No Maintenance, No Adjustments Required – Unlike air-based systems, RAS installs in under an hour and works immediately with zero upkeep.
  • Proven Performance & Durability – Designed for heavy-duty towing, hauling, and everyday driving with long-lasting reliability.
  • *NOTE: Fits SuperDuty without top overload. See part 3611-SLHD for Superduty with factory top overload.


Product Description

The video showcases the product in use.The video guides you through product setup.The video compares multiple products.The video shows the product being unpacked.
RAS Kit On Box

A High Quality Part

For More Than Just Squat

Using high quality components proven to last, pickup owners enjoy the seamless blend of improved load handling, performance, ride quality and enhanced overall performance at all times.

Celebrating 25 Years

  • RAS offers a more complete solution, where enhancing stability, reducing rear squat, dampening excessive rebound, improving performance, and providing same-as or better-than-stock ride is just as important as reducing rear squat.

  • While RAS can strengthen the rear suspension by up to 50% in a progressive manner and can improve the way your truck handles loads; it and no other suspension upgrade can increase the manufacturer weight ratings.

  • From a fitment standpoint, RAS often fits lifted trucks without an issue. Before ordering for your lifted truck, be sure to check your suspension for possible obstructions. If there appears to be an issue please contact RAS directly for assistance.

  • Yes! While RAS is geared towards improving overall load handling, stability, and performance without hassle; RAS will also help reduce rear squat by up to 2-3 inches.

What Pickup Owners Are Saying About RoadActive Suspension


Vigilant Watcher
2025-07-03 18:03:14
I was skeptical and took a while to pull the trigger on this, wish I had done it sooner. Towing is so much better, eliminated the push-pull and dolphin affect, ride is smoother and much more controlled. Even without the trailer, the ride is much better and handling is incredible.
Fishnbruce
2025-06-13 11:31:50
Super easy to install. It keeps my super duty from squatting near as much when I have my fifth wheel camper hooked up. Very happy with this product! Unloaded ride quality was not affected and I don’t have to mess with adding it taking out air. Great solution to sag under load! Looks good too without being obvious.
Kindle Customer
2025-06-12 17:06:41
After 1000 miles with 7k trailer and 2700 cargo equipped with a Curt WD hitch as well as 1500 unloaded.Pros:Easy install, adds 1.5” rear height at 2000 pound setting, unloaded ride is slightly smoother, loaded ride is more stable with far less squat.Cons:I would have given 5 stars except for the price. These should cost no more than $3-350 due to simple design.Regarding the reviewer who complained about lack of trailer sway control: this device complements a load distribution hitch, but can never eliminate the need for one.
Matt
2025-05-20 18:35:55
I am a big proponent of doing things myself...the installation instructions were easy to understand.
R. H.
2025-03-20 13:47:27
Worked well for leveling truck and reduced bounce recovery but did little to reduce sway. This was on my 2023 Super duty crew cab towing 29 foot travel trailer/toy hauler weighing 10k. Ended up using a Equalizer 4 point hitch.
Tim G.
2024-12-31 20:28:08
Took the squat out of my F250 while towing conventional and 5th wheel. Highly recommend.