RoadActive Suspension Custom Leaf Spring Enhancement Kit - Heavy Duty
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2018 Ford Expedition
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2018 Ford Expedition
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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
Very easy to install and made a big difference. I have 300lbs in the back a d it made it sag. With this on, look like stock height.
Received this yesterday and the directions are very vague for my Dodge pick up, but upon looking at things, it does not work for my truck because it has overload springs. I think all.2001 2500 Rams have the overload springs?
That was never mentioned in the guaranteed to fit my truck, but, This kit cannot be installed if your truck has factory overload springs sitting on top of the main leaf spring pack.
So I guess I will never know how good they actually work.
My husband had some trouble woth the first one with the spring but they are amazing truck didnt move an inch when we put our 5th wheel on it amazing.
Install went smooth, did this myself. Gave my F150 the extra support to be able to tow my half ton rated fifth wheel with the truck sitting level. The unloaded ride is still just like it was prior to install. I used the thin white spacer to set the spring tension.
I have heard nothing but good things about these enhancement springs so I bought a set. Very easy to install if you have any mechanical ability at all. Haven't used my truck to pull out 5th wheel RV yet but I will in a couple of days. I have a 2500HD it seems to have soften the ride a little. It doesn't make sense but prior to instillation it rode rough like it should, but the springs seem to help. IDK
Finally decided to try the RAS system for the truck since I bought a bigger camper. Ordered it hoping it would get here in time for an install before our new camping trip. Arrived in plenty of time! Opened it up and went through the instructions and got to the install. So, advice…read instructions from start to finish before starting! LOL. I thought they sent the wrong parts and then I read the instructions completely and then said, oh yea, forgot that part. Ha ha. Anyway, there's always a better way to do things based on your situation and vehicle. So after a few different attempts, finally got my groove and install went just fine. As always…take your time, double check everything before tightening down! Anyway, completed the install and then took it for a quick drive. Real happy with it! Felt substantially like it can handle more weight. Will be trying it with the camper next week. Again, thanks to the etrailer peeps for getting it to me on time. Since Murphy's Law resides in my garage, I wanted plenty of time to do the install right…and they delivered! Literally. Thanks again and will look forward to the next order.
Installed this today on my 2023 Ford F150 Lariat 4x4 with the tow package. The kit arrived within 2 days of ordering. The box was slightly open but the springs appeared undamaged. I elected to do the install myself and opted to get a 4 ton floor jack to replace my very old 3 ton. I’m very glad I did. After blocking the front tires and setting the parking brake, I loosened the wheels and raised the rear at the differential using a small 2x4 block to span the contact points. I took the wheels off and originally set my jack stands in front of the leaf spring on the frame. Lowering the truck onto the stands was not effective. There wasn’t enough travel to provide relief to the springs. I ended up setting my jack stands on some 1x16 scrap pieces and put them under the spring attachment point. This gave me just enough room on my floor jack to unburden the springs. Once I got over this small hurdle the install went smoothly. This took about an hour to very carefully construct as I didn’t want to drop my brand new truck on the ground. Brand new 5 ton jack stands would have eased my mind considerably. My install includes a spacer for the bump stop to offset it towards the centerline of the vehicle. The instructions weren’t intuitive and it took a few minutes to figure out the bolts. You need to insert the provided bolt into the spacer and attach the spacer to the frame with the original bump stop bolt. It’s the only one you can get a socket on in the depression. The bump stop then attaches to the provided bolt you inserted into the spacer using the provided nut. You will need a deep well 15mm socket for this attachment. Fortunately I had one. I set the spring using the 25% white spacer, reinstalled the wheels and set the truck back on the deck. The truck now sits 3/4” higher in the rear. I drove around and noticed that I was sitting a little higher as the site picture changed a bit. The truck didn’t seem to ride differently empty. If anything it seemed a little more cushioned though no less responsive. I towed my 9000lb travel trailer previously with a Ram 2500 6.7l diesel that had Sumo springs and a WD hitch. I got tired of the cost and maintenance and selected this Ford because it could haul the trailer. I chose the RAS over the Sumo springs because of how much squat I observed when I hooked up the trailer initially. I will update after I tow the trailer. My only concern at the moment is that the bump stop spacer isn’t going to provide enough clearance from the bracket.
Installation was pretty easy. I am not a mechanic and it was straight forward. I would say that the pictures included in the installation instructions are not detailed and don't show a good close up. Including a video QR code would be way better.
Otherwise, the vehicle sits a bit higher and the back end seems more solid.
I was a little concerned when they arrived as there was no instillation directions in the supplied literature. There was Ford, Dodge etc but nothing related to a 2023 Silverado 1500. I forged ahead using the universal instructions that were supplied. All turned out well. The instillation went much easier that expected. This is the second time in a month that I have ordered from etrailer.com. EXCELLENT fast service with lots of follow up on tracking etc. THAKS to all etrailer employees.
This is my second F150 with an RAS installed. With RAS, my 2023 F150 2.7 Supercrew (with HD payload package, rated to tow 10,100#) tows my 6000# Airstream completely level with no squat and no issue when paired with a WD hitch. And yes, I've done the same tow without RAS and would prefer not to do it again. Absolutely an improvement over stock with minimal impact to daily driving. It does raise the rear about 1-2" but nothing the average person notices and I forget about it all the time. I'd like a leveling kit to help raise the front/reduce the rake a bit but then it wouldn't tow level anymore so that's the compromise. The RAS does exactly what it claims to do, at a fair price, and maintenance free (no airing up or down etc.) The only improvement that would be better would be trading up to a 2500 or 3500 but that's not the daily driver experience I want for the 80% of the time I'm not towing. I did buy again when I traded in my 2017 and would buy yet again if I got another half-ton.
Received the package very quickly.
Installation is easy for the DIYer.
Have already used the Road Active Suspension on my F150. Stabilized the body roll of the truck while towing My travel trailer. Coupled with weight distribution and sway control system the conventional tow travel trailer was as stable as a 5th wheel tow. Haven’t had a chance to tow yet with my F250 but expect the same results. Like others have said it does not change the ride of the empty F250.
Product performs as it claimed. These are an excellent product.
Purchased for a 2018 F150 to assist with towing a 6000lb RV travel trailer. The heavy duty model is too heavy duty. With the pre-loading as light as possible, the unloaded ride is stiff. Would recommend the standard model. With the travel trailer (using an Equalizer brand weight distribution hitch), the ride and stability was much improved over just the factory leaf springs. The rear of the truck was raised over an inch. Installation was straight forward. A little bit of guessing as to the pre-tensioning and if they are matched left and right. Would love it if the design could be changed such that it was easy to "snap on" when needed and "snap off" when unloaded. Maybe some sort of lever system would make this possible. Overall, they did what they are designed to do - assist the truck in being more stable when under load and less squat. I ended up trading the Ford for a Toyota which has coil springs so I passed on the RAS to the new owner of the Ford.
I bought these after a 1000+ mile trip towing my trailer (~8000# loaded) with my 2013 F-150 (HD Payload & Max Towing Package). Installation was super easy. I did not need to take the tires off. There was plenty of room to get behind the tires and place and adjust the springs. Once installed they definitely give the truck a rake. I didn't measure pre-installation because I didn't expect the lift to be so great. I used the black disc to adjust the springs.
It's not too extreme but you can definitely see a difference compared to stock.
As you can see in the pictures, with the springs the drop with a trailer attached is greatly reduced and the truck sits level. Towing was great. I used a WDH before and being able to with springs only and a sway bar is pretty nice. Drop with trailer attached is only about 2.5 inches (see pics)
I just got to use it It works great Thanks Ashley for being so helpful
What an awesome addition to my truck (2017 Ram 3500 DRW). I have yet to haul my fifth wheel with the RAS, but as far as an empty weight ride it really smooth out the truck. I did not let my bride know that I added this system to the truck, she commented on the smooth ride on her first outing in the truck. Allison K. from e-trailer is very awesome, if you call into a trailer ask for her, she will answer all your questions and help you out.
I have 04 dodge 2500 ram. This doesn’t does not go on as simply as all the YouTube videos suggest for this yr truck. Did not find out until reading instructions when product arrived. You have to drop rear spring shackles to attach the hook part of the kit. Disappointed in lack of ease.
installation was very easy took more to remove the tires and jack up the truck than to install the roadmaster, only wished they had said that the 2mm spacer should be used for a 3500 ram hauling a 40 foot 5th wheel but there again I should have figured it out, have not had it on the road yet so will let you know how it tows
Customer service was great and very helpful! Shipping was fast, neat, and well packed! Customer is very happy!
Had these put on 3500 Ram diesel. 8’ box with Northstar Igloo, 14,000 lb total. The overload springs are not ideal for much on truck. With truck camper they are no good. I have put the truck camper away for winter before a easy install. You difinitly need need a full height lift so I to take it in. I set it at 40%, the most. The ride empty with 10 lbs in air shocks is not bad at all, just stiffer I did notice sharp bumps more but is not bad and I am happy. Short box could be different. The truck handles empty way better like on rails no sway in fast corners.kinda fun. If you went with 20% softer setting I do not think it would be noticeable at all for empty, lighter loads, or shorter box. Wish I could of have a loaded review.
This product has worked well for me. I have used this on previous trucks towing a camper. It helps level out the load on the truck. This product does not work on trucks with top overload springs. Unless you remove the top overload springs. If your vehicle is still under warranty taking off the top overload spring may be a problem. But this product has worked well for me on a half ton truck.
I highly recommend the Roadmaster Active Suspension for your tow vehicle. This is the second kit I've owned. The is no better overload system made. The kit acts like a rear sway bar, traction bar and overload. No more heavy body lean. No more wheel hop. Best part is that when your not towing, you don't feel like the kit is there.
The RAS system is amazing!!! The previous owner of my 2011 Ram 2500 had taken the lazy route while "leveling" the trucks stance. They'd done a "reverse level", which greatly degraded the trucks towing capacity. The RAS System has regained the lost 2 inches in rear ride height, added stability, and control. Empty or loaded, the ride and handling are greatly improved. Can't wait for our first road trip with our new toyhauler.
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