Ford F-250 2011 - 2026 | HD Kit
Ford F-250 2011 - 2026 | HD Kit
Ford F-250 2011 - 2026 | HD Kit
Ford F-250 2011 - 2026 | HD Kit
Ford F-250 2011 - 2026 | HD Kit

Ford F-250 2011 - 2026 | HD Kit

SKU: 3611-SHD

Regular price$589.00
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Shipping calculated at checkout.

Fitment

Checking fitment for your active vehicle...

Factory Overload Spring
  • In stock, ready to ship
  • Backordered, shipping soon
  • 1-3 Day Ground Shipping 1-3 Day Ground Shipping i
  • 5 year warranty 5 year warranty i

Get the best of both worlds with this authentic RAS® Heavy Duty RoadActive Suspension kit -- the only solution that strengthens leaf springs by up to 50% while providing a more smooth, controlled ride at all times. 

Unlike other suspension upgrades that need constant adjustments & maintenance or negatively impact unloaded ride, RAS® greatly reduces squat, excessive bounce and body roll-- without hassle or sacrificing comfort .

 This 3-in-1 system offers the benefits of a helper spring, sway bar, and traction bar at the fraction of the cost of other upgrades. With a quick 1-hour installation and zero maintenance, it's the simplest most effective way to reduce squat and improve your truck's towing/hauling performance. Beware of cheap knockoffs -- trust the original, proven RAS®

FAQs (squat reduction, ride quality, how it works)
How does RAS® work?
RAS uses a variable-rate tension coil spring that attaches directly to your rear leaf springs. It works like a muscle, progressively engaging as load or force is applied. This keeps the leaf springs in an upright bowed position to prevent sag, improve stability, and enhance bounce isolation.
How much does RAS reduce squat?
Most applications see a 2–3" reduction in rear squat. The exact amount will depend on multiple factors such as vehicle size, load size, load placement, leaf spring condition, and the tension setting of the RAS.
Will RAS affect unloaded ride?
Expect same-as or better-than-stock unloaded ride with less bounce and more control.
Can I install it myself?
Yes—in as little as 45 minutes with jack stands and hand tools. No drilling, no airlines.
Why not airbags or helper springs?
Airbags add complexity and maintenance. Other helper springs fix sag only, can negatively impact ride quality, and don’t deliver the same combination of benefits. RAS is 3-in-1: controls squat, reduces sway, and improves traction.
🚚 1–2 Day In-Network Ground Shipping  FREE
RoadActive Suspension warehouse network ground coverage map
Transit estimates shown. Actual delivery times may vary.

*If your truck does have a factory top overload, it must be removed in order to install RAS and will provide slightly better than factory suspension strength.

RoadActive Suspension provides a 30 day money back guarantee, from date of purchase. However should the kit be returned, it must be re packed in the original packaging with all components included. On orders with free shipping (where shipping was paid for by RoadActive Suspension), refunds will reflect the invoiced amount, minus that shipping cost billed to us by our shipping provider. In addition, the customer will be responsible for the return freight charges.

It works with your suspension — not against it.

Each kit is tailored to your specific vehicle

RoadActive Suspension is uniquely assembled for your model and typically ships within 1-2 business days! RoadActive Suspension is the only suspension upgrade on the market that adds strength to your rear suspension, provides same as or better than stock unloaded ride quality and doesn’t require readjustments or maintenance.

Each RAS kit comes fully assembled out of the box and ready for installation. Follow your application guide that is in the box and you will be ready to test your RoadActive Suspension after an installation as simple as 45 minutes! If you are not satisfied with your RoadActive suspension we offer a money back guarantee.

Reduce Rear Squat & Bounce

Improve Stability

Improve Roadhandling & Stability

Make RVing Safer

Reduce Axle Wrap

No Readjustments or Maintenance

We already know what you're going to ask.

Use this text to answer questions in as much detail as possible for your customers.

RAS uses a variable-rate tension coil spring that attaches directly to your rear leaf springs. It works like a muscle, progressively engaging as load or force is applied. This keeps the leaf springs in an upright bowed position to prevent sag, improve stability, and enhance bounce isolation.

Most applications see a 2–3" reduction in rear squat. The exact amount will depend on multiple factors such as vehicle size, load size, load placement, leaf spring condition, and the tension setting of the RAS.

Expect same-as or better-than-stock unloaded ride with less bounce and more control.

Yes — in as little as 45–60 minutes with jack stands and hand tools. No drilling, no air lines, no maintenance.

Airbags add complexity, cost, and ongoing maintenance. Other helper springs only address sag and can compromise ride comfort.RAS is 3-in-1:it controls squat, reduces sway, and improves traction — all with zero maintenance.