RoadActive Suspension Custom Leaf Spring Enhancement Kit
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2024 Subaru Forester
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2024 Subaru Forester
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When towing or hauling, rear-end sag can throw handling and braking off balance. This RoadActive Suspension kit adds 2,000 lbs of support by converting your factory leaf springs into a mechanically active suspension system. The variable-rated coil tension springs automatically adjust to your load to keep the truck level, eliminate squat, and maintain traction while braking or accelerating. With the ride leveled from front to back, steering feels more confident and headlights stay properly aimed even when you’re towing or carrying heavy gear.
Curves, crosswinds, and passing trucks can make a loaded vehicle feel loose and unstable. This system strengthens your leaf springs to resist that motion, reducing body roll and sway before they start. The active spring design stabilizes the rear of the vehicle so it stays firm through turns and highway gusts. Whether hauling a camper, trailer, or tools, you’ll notice steadier handling and fewer rocking motions on the road.
Heavy loads can flatten out factory leaf springs, leading to bottoming out and wheel hop. The RAS kit reacts immediately under weight to absorb force before it hits the axle. By keeping the leaf springs bowed in their working position, it prevents axle wrap and wheel hop for smoother traction and less stress on shocks, shackles, and tires. That means better control when accelerating or braking with a load on board.
Installation is straightforward with no drilling, cutting, or welding required. Each unit bolts under the leaf spring using your existing U-bolts and comes fully assembled with hardware included. Once installed, no adjustments or maintenance are needed—the system automatically engages under load and releases when unloaded for a normal ride feel. Durable epoxy e-coated steel construction and corrosion-resistant brackets with a salt spray rating of more than 800 hours ensure long-term reliability in all conditions.
Videos are provided as a guide only. Refer to manufacturer installation instructions and specs for complete information.
Hi, everybody, Andy here with etrailer.com, and today, we're gonna take a look at this RoadActive Suspension Custom Leaf Spring Enhancement Kit. Now, this is a custom fit kit that is designed to fit the 1986 to 1995 Toyota pickups, and then your 1993 to 1998 Toyota T100 pickups, and then the 1995 to 1997 Toyota Tacoma, and then finally, the 1998 to 2004 Toyota Tacoma excluding PreRunner. So to confirm that this kit's gonna work for you, take advantage of our vehicle fit guide here at etrailer.com, input the year, make, and model of your vehicle, and our fit guide will let you know if this will work for you or if we have something comparable that will work for you. Now, as you probably know, when towing or hauling a heavy load, you may encounter a number of problems that can make your driving experience difficult or dangerous, such as sway, body roll, or bottoming out. So when your vehicle is weighted down, your factory leaf springs can't counteract these problems to the extent that they are supposed to. The weight will overpower your leaf springs and cause them to twist or flatten out, and when that happens, they cannot support, level, or stabilize your vehicle effectively.
Additionally, because your factory leaf springs are passive, they won't begin to tackle problems, such as sway, until those problems have already started. So this kit will convert your existing vehicle factory leaf springs into a mechanically active suspension system. It will actively strengthen the leaf springs for improved ride quality with or without a load. And this all-in-one suspension system will improve stability, handling, and control, it will eliminate axle wrap, wheel hop, bottoming out, and it will reduce dangerous sway and body roll when you are cornering, and it will even keep your ride level when you're towing or hauling a heavy load, improving traction while braking and accelerating. It does use the variable rated coil tension springs, which will automatically adjust your vehicle's load, they actively and immediately support the extra weight and they'll disengage when unloaded, allowing your leaf springs to perform as intended.
They can be adjusted during installation to accommodate your towing or hauling needs, and they are independently adjustable for side to side leveling of any off center loads. So these will help extend the life of your current leaf springs, your current shock absorbers, shackles, and even your tires. Now, these springs are made here in the USA, they are constructed of a durable epoxy e-coated steel, so these are very durable, and the corrosion-resistant brackets on the ends of each of the units have a salt spray rating of more than 800 hours. So this is going to be an easy bolt-on installation. What's great about these is there's not gonna be any drilling, cutting, or welding required.
This eye bracket will wrap around the top of the factory leaf spring eye, and then the unit will secure under the leaf spring and around the factory U-bolts. Now, you're going to receive these as you see them, they're going to be fully assembled and hardware's included, and these are maintenance free, adjustments and monitoring aren't needed once they are installed. The weight capacity is 2,000 pounds. However, I do wanna point out that this kit will not increase your vehicle's weight carrying capacity. Instructions are included to walk you through the very easy installation process, and that's gonna conclude our look today.
I do hope that it was helpful for you. Again, my name is Andy. Thank you for joining me.
Ratings & Reviews
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.
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.
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.
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!!
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
Really impressed the way it can take extra weight. Was easy to install, very glad I bought them. Thank you
After a year of ownership and hauling wood through mountain ranges I’m pretty satisfied with the setup
No drilling, adjustable and helps mitigate swaying.
Bumped the back end up a tad, but I don’t even notice it anymore.
Super satisfied!
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