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Add rear suspension support to your Ford F-250 for heavy towing and hauling. This RoadActive Suspension Mega-Duty system strengthens your factory leaf springs by up to 50% to help reduce squat, sway, bounce, and axle wrap.
When you hitch up a trailer or load the bed, the rear suspension can sag and throw off your handling. The RoadActive Suspension Custom Leaf Spring Enhancement Kit strengthens your factory leaf springs by up to 50% by turning your factory leaf springs into a mechanically active system. It automatically adjusts tension to the load, keeping your ride level whether youre towing, hauling gear, or carrying tools in back. You get steadier steering, better braking traction, and correct headlight aim no matter the weight behind you.

Heavy loads can make your truck lean or bounce through turns and cause wheel hop when accelerating. The variable-rated coil tension springs in this kit engage instantly to stabilize the leaf springs before problems start. They strengthen your suspension to cut down sway and body roll on corners while preventing axle wrap and bottoming out under weight. The result is a smoother, more controlled ride with improved traction during braking and acceleration.


Unlike systems that need constant pressure checks or air adjustments, this setup is ready to go after installation. Each unit bolts under the factory leaf spring and around the U-boltsno drilling, cutting, or welding required. Once tensioned during setup, the springs activate automatically when loaded and disengage when empty. Theres no need for regular monitoring or maintenance, just reliable performance every time you tow or haul.


Long days on the road mean exposure to rain, salt, and grit that can wear out lesser parts. Each RAS unit is made from high-grade alloy steel with an epoxy e-coat for corrosion resistance. The end brackets have a salt spray rating of more than 800 hours, giving them lasting protection against rust and harsh weather. You get a suspension upgrade that holds up to years of heavy use with confidence backed by a 5-year warranty and 30-day money-back guarantee.


Videos are provided as a guide only. Refer to manufacturer installation instructions and specs for complete information.
Hi everybody, Andy here with etrailer. Let's take a quick look together at this RoadActive Suspension Mega-Duty Custom Leaf Spring Enhancement Kit. Now, this has been designed to fit your 2011 to current Ford F-250s. And on custom fit parts, such as this suspension enhancement kit, I do recommend going through our Vehicle Fit Guide here at etrailer. Just pop in the year, make and model of your vehicle, and our Fit Guide will confirm if this will work for you or if we have something comparable that will work for you. Now, this custom leaf spring enhancement kit is going to be an upgrade for the rear leaf springs on your F-250.
And this is for your truck, if it goes through a lot of heavy towing, a lot of heavy hauling. So, instead of replacing your factory suspension, this is going to work with your existing leaf springs and make them up to 50% stronger. Now, the main reason that someone would consider a system like this is if your truck starts to squat, bounce, sway, or maybe just generally feels less controlled when you are putting on a heavy trailer on your trailer hitch receiver or a substantial load in the bed of your truck. So, when the rear of your truck squats, that's gonna affect more than just how your truck sits. Steering can feel lighter, headlights can point upward, and the truck can become less stable through turns or over uneven roads.
So, this system is designed to reinforce the leaf springs as they're loaded and help keep the movement under control. Now, one of the interesting things about this system is that this is an active mechanical system. It uses variable-rate coil tension springs that are going to work with the factory leaf springs. As the suspension is loaded and the leaf springs try to flatten, this system is going to provide additional resistance and that's gonna help reduce that squat, body roll, sway, bouncing, axle wrap, wheel hop, and bottoming out. But it can also help keep your tires planted more consistently during acceleration and braking.
Now, if you're thinking about this, and then airbags, and comparing the two, one of the biggest differences is gonna be maintenance and adjustment. Airbags are going to give you a lot of adjustability, but you can have air pressure, but you have air pressure to manage. But with this, you set the spring tension during installation, and then you just essentially leave this alone. There's no air lines, no gauges, no compressors, or pressure checks to deal with. Installation is another selling point.
This is gonna be a bolt-on installation. It's going to fit around your factory leaf springs and U-bolt area. And then the. And so you're not going to have to worry about drilling, cutting, or welding, or anything like that. The components are built for long-term exposure underneath the truck. They're made from high-grade steel, alloy steel rather, with the epoxy E-coating. And the end brackets have a salt spray rating of more than 800 hours. A lot of our neighbors tell us that their truck feels more planted. It feels more controlled, particularly while they're towing. Reduced sway, less bouncing or that purposing, better cornering, and less rear end sag are also mentioned to us on a repeated basis. So, it's definitely gonna be something that, once you get this installed, you're going to feel the effects, especially when you start towing heavier trailers or hauling heavier loads. This includes everything that you see here along with instructions. If you are interested in this, but you're not real excited about doing the installation yourself, that's okay because on this product page, underneath the Photos section, we have a link that will take you to our Installer Locator. Click that link, answer the questions that it has for you, and that locator will find an installer in your area that etrailer has partnered with to get this installed for you. So this is going to strengthen the suspension on your F-250, but just keep in mind, this does not actually increase your weight carrying capacity. So, you want to make sure that you're not exceeding Ford's recommended weight limits for your F-250. But I think that's going to wrap up our quick look today. Again, my name is Andy. Thank you for joining me.
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!