RoadActive Suspension Custom Leaf Spring Enhancement Kit
This item does not fit your vehicle
2001 Jeep Wrangler
These items fit your vehicle
2001 Jeep Wrangler
To see if this custom-fit item will work for you please tell us what vehicle you'll use it with.
When towing or hauling, rear-end sag can throw off your steering and braking. The RoadActive Suspension kit adds 2,000 lbs of load support by turning your stock leaf springs into a mechanically active system. As the weight increases, the variable-rated coil tension springs automatically adjust to keep your ride level and stable. That means no more squatting when you tow a trailer or load up the bed—just steady handling and confident control.
Sway and body roll can make towing or cornering feel sketchy. Each RAS unit uses a variable-rated coil tension spring that reacts instantly to shifting weight, reducing sway and body roll before they start. The setup strengthens your factory leaf springs so your vehicle stays planted through curves, turns, and windy conditions. You’ll notice less rocking when passing trucks go by and more control when the road bends.
Heavy loads can twist leaf springs and cause wheel hop that makes your tires lose grip. The RAS design absorbs that extra force, preventing axle wrap and keeping traction where you need it—on the road. That not only improves braking and acceleration but also helps extend the life of your shocks, tires, and other suspension parts.
This all-in-one kit comes fully assembled for an easy bolt-on install—no drilling, cutting, or welding required. Once set up, it needs no adjustments or ongoing maintenance. The coil springs have an epoxy e-coat for corrosion resistance, and the brackets carry a salt spray rating of more than 800 hours, so they can handle real-world weather without a problem.
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 at this Road Active Suspension Custom Leaf Spring Enhancement Kit. Now this kit has been specifically designed to fit your 2003 to 2014 Dodge Ram, both the 2500 and 3500s, then your 2010 and newer Ram 2500 and 3500, both the two wheel and four wheel drive models. Now on custom fit parts such as this kit, I do recommend taking advantage of our vehicle fit guide here at etrailer.com. Just input 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, when you are towing heavy trailers or carrying heavy loads, nothing's more frustrating than a vehicle that sags or sways.
Now this road active suspension kit is going to transform your standard rear leaf springs into a dynamic support system with a 2000 pound load leveling capacity. So the coil tension springs that you see here, they're going to automatically adjust to your load, maintaining stability and ensuring that your ride stays level and secure. As you probably know, there's nothing more unsettling than feeling your vehicle lurch and hop when accelerating or braking under a load. With the RAS system, axle wrap and wheel hop are going to be a thing of the past. This is gonna stabilize your rear axle by absorbing the load force energy, meaning better control and less wear on your Ram.
Now your trailer's gonna stay in line and that jarring up and down motion on uneven roads is gonna be greatly reduced. And then, maneuvering around tight corners with a loaded trailer, as you know, can be a daunting task when you're battling sway and body roll. This system's gonna reinforce your leaf springs reducing sway and keeping your vehicle stable as you navigate those turns. So no more fearing a shift in your load. You're gonna feel confident and safe knowing that this system's gonna help prevent roll, whether you're towing or simply dealing with windy conditions.
Now, if you are frequently carrying uneven loads, this system is going to provide a solution. With its adjustable coil tension springs, you're just going to adjust the tension settings during insulation to accommodate different load distributions. That's going to ensure that both sides of your vehicle are evenly supported, enhancing handling and safety even with off-center cargo. So you're gonna be able to forget the hassle of air springs or hydraulics that require constant monitoring. This system is going to bolt directly onto your rear axles leaf springs, and once it's on, there are no adjustments or upkeep needed.
This is gonna be a straightforward, robust enhancement to ensure that your suspension always performs its best, whether you're loaded or empty. Now, this again, will give you a 2000 pound capacity, but do keep in mind that this does not actually increase your vehicle's weight carrying capacity, so you wanna make sure that you're not exceeding your manufacturer's recommended weight limits. If you have any other questions, whether it's about this system or anything else that we carry, don't hesitate to reach out to us 'cause we wanna make sure that you're getting exactly what you need. Well, again, my name is Andy. Thank you for joining me.
Ratings & Reviews
Made all the difference in the world! Also, easy to install. Yes, the ride is stiffer, but when I'm dragging the 10K of weight in the trailer, it's worth it.
Easy install when I rotated tires. Forgot to measure height difference, but it did raise a bit. I like the adjustability and not having to remove springs and shackles to add a leaf. Will be towing the camper with improved support.
I Have had this suspension on multiple trucks and i love it . It takes the sway out of the truck when entering a exit ramp and taking sharp turns with a trailer or without, also reduces wheel hop and increases payload in the bed of the truck.I would recommend for all trucks pulling trailers.
Overall, very happy with the product. GMC didn't have any way to improve the truck from squatting when I hooked up my trailer. This kit didn't stop the squatting but significantly reduced the bounce on bad dips in roads, bridge/road transitions and bad railroad crossings.
Hands down the engineering behind the product was well executed and would recommend it to anyone who's travels involve pulling any type of trailer. You will feel a much smoother ride even when not pulling a trailer at all.
I received this kit in a very timely manner always do from etrailer have some issues with the instructions that come from roadmaster not a trailer the bump stop spacer didn’t say that you need to use the original bolt from the bump stop so it slowed me down greatly on the install however I took it out on a quick run without a load I do feel that this has made the unloaded ride smoother tomorrow I’ll be taking the trailer out for a bit and we’ll see how it works there and I’ll update this rating.
I found this items cheaper on another site but etrailer match and then beat the price.
Item installed super easy, more work jacking up the truck and taking the tires off. Can be installed with out removing tires just make it easier to get it in. The item did lift the back of my truck 1 inch. See Pics.
Easy install 2011 Tacoma crewcab long bed. Helped with sag when towing microlite travel trailer. Keeps the rear end raised in the rear a little when unloaded, but I like that look. Only complaint and its nothing big when truck is unhooked and empty when i get out I can hear alittle noise from RAS. Sort of like a bedspring coil. Night pic is with RAS installed daylight pic is with out installed
I’ve bought a lot of products from etrailer and as always everyone I dealt with is professional and knowledgeable of the numerous products they sale. I used every resource they offer to help me decide what type of suspension upgrade I was going to use to improve the haul and tow ability of my 2017 diesel chevy Colorado 4x4 crew cab short bed. I chose the RAS system from Roadmaster. I also called them and ask some very detailed questions about using my OEM shackle instead of replacing with the plates in the kit and was told that was fine and that others had also. I got professional and knowledgeable info that helped make my decision. The product is exactly as promoted and every review out there on the internet about how good or unchanged the unloaded ride is after installing are true. My truck rides better now and it was already quieter and almost as smooth as my wife’s Cadillac. If your looking to improve the drive, tow and haul ability of your leaf spring vehicle, and I say vehicle instead of truck because I don’t know if they have them for other leaf spring vehicles, you are not going to find a better easier to install product that does that for your loaded or unloaded vehicle, IMHO. I will update in a year after next spring mulch haul. I don’t expect zero squat but hope to reduce and improve loaded steering performance. Took longer to jack up truck and remove tires than install kit.
I love the product since i have a 2021 toyota tacoma crew cab long bed with a campertop a robber mat and a jack thats around 450 pounds that a have at all times my truck was sittind low a lilbit plus it was swagging on the road i have summo spring to help my suspention but it was not enoght so i did my research but this was my better option i just installed it yerterday july-8-2021 and went for a ride where i ussually drive everyday and WOW now my truck rides very smood plus it lift my tryck 1 inch on the back now my tryck seats level it took me about 2 hrs but i did right i just follow the intructions and done i love the product the only thing that im concern is that the left side underneat the springleaft there is a breik line that is too close to the roadmaster suspention i hope that with the time dont hit that line because if it does thats the line for the breiks and i will be in trouble replacing it other wise evreything works great i recomend it 100% thanks guys i will buy it again?????best $500 that i spend on my truck
I have a 2020 Silverado 1500 6 cyl Duramax with the Diesel Off Road package (3.73 diff). Travel trailer loaded is probably about 6,000 lb. I took several measurements during and after the spring kit installation. All measurements increased about an inch including the stock suspension with trailer and equalizer bars and with the spring kit installed at 1 mm spacing. A one inch improvement overall. I took the truck on a short drive and didn't notice any difference in ride (wasn't stiffer) which is what I wanted. Good to know that I can adjust the springs to the 2 mm spacing if I want to increase the suspension assist. Going camping next week and looking forward to see how it improves handling and porpoising.
The bed of the truck measured 37.5" with a tool box weighing 200 lbs. The truck felt weighed down with passengers weighing 600lbs. Total weight 800lbs with a tank full of gas. After the install the truck rides smoother and certainly " like new". The stopping distance and acceleration distance have shortened drastically. I'm planning on loading up the bed and the Roadmaster Active Suspension RAS4611. My wife even drive it and she could feel the difference. "It drives like a muscle car." Buy it. Install time at a reputable mechanic shop was a 30 min. Install. I received them today at 1 pm and got it installed at 3:00 pm and finished the install at 3:30pm. It's an investment worth the price over traditional air bag system. Mechanic installed this on 2011 Nissan Titan SV.
Balances ability to tow my 1800 squaredrop Hiker camper with 350 tongue weight as well as roof top tent on Leer 180 camper topper. Better handles load and side to side tipping on '21 Ranger. Keeps sage to a minimum.
I have put these on every pickup that I have owned and not only does it assist with heavy loads, my tires have gone past 80,000 miles before needing replacement. All Chevy Duramax 2500's and 3500's!!
Fantastic! Completely changed the way the truck tows. Kinda rides rougher unloaded, but not too bad.
Did not fit my 1995 F-150. ETrailer was very helpful in an effort to make any adjustments needed. We all decided that they were a "no go" for installation. Return was made easy. I have bought several other pieces of gear since. Thank Etrailer.
i installed these on my 2001 ford f-250 4x4 and this is a huge upgrade whether your towing or empty.truck rides and handles better than it ever has. easy straight forward installation. you will need a t-55 for the front bolt and a 12mm ratchet wrench for the adjustable bolt that tightens the spring and a couple of 22mm and a 19mm wrench or crescent wrenches for the jam nuts. i took the weight off of the leaf springs for easy adjustment of the coil spring and used the thinner of the two disc that came with the kit and it raised the rear of the truck up exactly 1 inch empty without a trailer connected. if you use the thicker disc it will raise it more.
I haven't hooked up my camper yet but set the springs up with the white wafer and it raised my truck 1 1/2 inches which is the amount it dropped after I put on a fiberglass topper. The ride is just a bit stiffer but a lot less body roll I noticed. Not impressed with the 25 Silverado suspension compared to my previous 2017 truck. If the squat is still there after I hook up the camper, there is plenty of adjustment left.
These made such a difference in the ride of my pick up while pulling my enclosed trailer. Let’s squat more stability.
Great product, helps with sway and when the truck has additional weight it progressively compensates. I would add this to any vehicle with leaf springs.
I don’t think they are really made for the old PU. 1997 k1500 8 ft bed with a 750 lbs camper tong weight I think I had to put to much pressure on the Kurt stabilizer chains to get level. It looked like the newer truck reviews on YouTube were great thanks Dingler.
2023 F150. Install was fairly easy. Set at 25%. Ride unloaded a bit stiffer, but handling much better. Lifted rear of truck about an inch. Towing 7500 lb camper down NYS thruway which is crowded with much unforgiving bumps and pot holes the ride was more manageable. The 25+ mph cross winds did make for quite a bit of sway still, not as bad as before adding the RAS. Still felt passing trucks trying to suck me in, not as bad as before.
I plan on cranking the RAS to 40% on next camping trip and hopefully give the RAS 5 stars.
I purchased the RAS system 6 months ago to help with rear end sag & control while towing our 22 ft 4200lb camping trailer. It improved sag & helped handling even when not towing! I don't get the bounce when driving on bumpy uneven roads the wheels stay planted on the road. I recently purchased a 8000lb camping trailer & my 24 1500 Silverado handles it very well, I will adjust the RAS to the next step up for the extra weight when time permits.
The install took just over an hour with help from a friend & a car lift which is good since I'm 70 years old.
Great product!
Just perfect to level the rear of my GMC 1500 Denali with the 29' Airstream (900 lb tongue wt). Preload is set at 1mm. I tried 2mm and it was overkill for this application. I was pleased with how easy the install was. I had to use a two jack hack to get the rear tires off since my 19" lift floor jack didn't quite have enough reach. You lower the differential after the tires are off so the rear axle is hanging free for the install. See photos
Info for this part was:
At etrailer we provide the best information available about the products we sell. We take the quality of our information seriously so that you can get the right part the first time.
Thank you! Your comment has been submitted successfully. You should be able to view your question/comment here within a few days.
Error submitting comment. Please try again momentarily.