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3,000-lb Capacity. Convert your Ford F-150's leaf springs into a mechanically active suspension system. RAS adjusts to your load to level your ride. The system also increases stability, handling, and control by improving traction and reducing sway.
Features:
Specs:
All-In-One Suspension System
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. 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 the leaf springs and cause them to twist or flatten out. 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.
RoadActive Suspension (RAS) kits enhance those passive leaf springs by converting them into a mechanically active, all-in-one suspension system. RAS kits have variable-rated coil tension springs that automatically adjust to your heavy load. Other suspension systems only solve a few problems and usually at the expense of other improvements your factory leaf springs may need. RAS, on the other hand, is a unique kit that provides everything you want in a suspension system without any trade-offs. It eliminates bottoming out like air springs, reduces sway and body roll like sway bars, keeps your ride level like helper springs, and improves traction and braking control like traction bars. This improves your vehicle's stability, handling, and control while you are towing or hauling, as well as when your vehicle is unloaded. RAS also makes your overall driving and towing experience safer and more comfortable, which greatly lessens driver fatigue.
Each RAS unit has a powerful variable-rated coil tension spring that converts your passive leaf spring into a mechanically-active system. Once your vehicle is loaded, the tension springs immediately activate to absorb and support the weight. This allows your leaf springs to maintain their bowed position and keeps them from flattening out or flipping over, which greatly hinders their ability to bear a heavy load. The tension springs are variable-rated, which means that the heavier your load is, the more assistance they provide to your leaf springs. Because of this design, RAS reacts instantaneously, whereas hydraulics, air springs, and other suspension systems take time to react. And unlike your factory leaf springs, RAS stops sway and sag before they even start to happen. Additionally, when your vehicle is unloaded, the tension springs disengage, allowing your leaf springs to perform as intended without hardening your ride. RAS won't hinder your leaf springs' movement, nor will it cause any friction between any of the brackets.
When under a heavy load, leaf springs are especially susceptible to axle wrap, which can cause wheel hop. Wheel hop is when the tires lose their grip on the road, causing a jarring, up-and-down movement. Axle wrap occurs when the circular motion of the tires cause the leaf springs to twist or rotate. If the leaf springs twist far enough, wheel hop can occur. RAS stabilizes your leaf springs by absorbing the force of the load they're trying to support. This eliminates axle wrap and wheel hop, as well as prevents your vehicle from bottoming out. Because of this, less strain is put on your vehicle. And by reducing some of this wear and tear, RAS helps extend the life of your leaf springs, shock absorbers, shackles, and even tires.
When driving along a curve while towing or hauling a heavy load, the back end of your vehicle or trailer can start to shift with that weight. If your factory leaf springs have flattened or twisted under this load, they won't be able to prevent it from shifting. Because of this, your trailer will sway away from your vehicle. This makes driving challenging and dangerous, as it increases the risk of body roll, which is when your vehicle drastically leans to one side. This can often cause you to completely lose control of your vehicle. Body roll is especially prevalent with multi-passenger vans and vehicles towing long campers, trailers, or boats. RAS provides a much safer ride by reinforcing your factory leaf springs and stabilizing your load. This helps prevent sway from occurring and reduces the chance of body roll while cornering, turning, and swerving. RAS also lessens the rocking motion that happens during windy conditions or when a semi passes by on the road.
When your vehicle is overloaded, the bulk of the weight transfers to the rear axle. Your factory leaf springs then become overwhelmed by this weight, as they are not strong enough to support it. This causes the back end of your vehicle to sag and the front end to rise, which means that the front tires have lost some of the grip they need with the road. In addition to loss of traction, it can also cause poor headlight aim, unintentional swerving, and an extremely bumpy and uncomfortable ride. RAS bolsters your factory leaf springs and enables them to provide support for your load without compromising ride quality or comfort. This keeps your ride level from front to back whether you are hauling a load in the bed or towing a boat, trailer, or camper. RAS also ensures that your tires have the traction they require while braking and accelerating, which improves the overall driving experience.
RAS is also customizable. During installation, the coil tension springs can be adjusted to 2 different tension settings or anywhere in between for improved road handling and support. To do this, rotate the springs while keeping the threaded rod still. As you turn the spring, use one of the 2 included spacers as a gauge to measure the widening gaps between the coils. In order for the RAS units to work as intended, you must tension the coils to a minimum of 25 percent with the 1mm white spacer and no more than 40 percent with the 2mm spacer. The springs can also be independently adjusted to compensate for off-center loads such as a handicap lift.
This custom-fit kit comes fully assembled and is easy to install. Each RAS unit simply bolts onto your factory leaf spring with the included hardware, and drilling, welding, and cutting aren't required. First, position the eye hook bracket so that it wraps around the top of the factory leaf spring eye. Then the axle bracket secures under the leaf spring and around the factory U-bolts on the other side of the leaf spring pack. Once the maintenance-free RAS units are fully installed, you won't need to monitor them as you would with air springs.
RAS is extremely durable and corrosion-resistant. The units are constructed of high-grade alloy steel, and they have an epoxy e-coat on the coil springs to provide extreme corrosion resistance. The brackets on the ends of each unit resist the effects of water and other elements, and they have a salt spray rating of more than 800 hours.
Average Customer Rating: 4.9 out of 5 stars (21 Customer Reviews)
3,000-lb Capacity. Convert your vehicle's leaf springs into a mechanically active suspension system. RAS adjusts to your load to level your ride. The system also increases stability, handling, and control by improving traction and reducing sway.Installed on my 2016 F-150 XLT. Truck Only Report: I'm very pleased with my unloaded truck ride. My truck now takes bumps much better and feels like it hugs the road better. On my wife's first ride, she said, "It feels like it rides smoother." I agree.
Although I have not towed my travel trailer yet, we will next week, when I hooked it up to my truck, all of my measurements are much better. With my WD hitch connected, all of my truck measurements are very close to equal to the unloaded, pre-RAS, measurements. In other words, with the trailer attached, much truck sits almost exactly at factory unloaded level. I'm really looking forward to giving a good run next week.
Gave my truck the lift it needed and even on heavy loads she sits level and drives perfect! Best deal!
2019 F150 2wd
Highly recommend even if bot towing it makes all the difference daily driving as well!
Robert M.
8/5/2023
Continues to work and perform as well as the day I installed! It has improved my handling during towing and heavy loads without the need to change struts or shocks or springs!
I received fantastic customer service from Amy! She addressed all my concerns and did the research to make sure it fit my truck.
My order arrived on time and was shipped right away I couldn’t be happier!
Ron
8/5/2023
It has been great! One of my camping friends bought them too and he is very happy as well. Thank you again for your great customer service!
Great product. Helped the ride comfort and leveling of the truck. Took the time to research and test the settings and works great. Only complaint would be the harshness of the ride after installed.
Jack
6/23/2023
So far it has worked flawlessly. Ride comfort seems to have softened slightly as its wore in from being new. Would still recommend to those seeking a better ride while towing.
Excellent! Excellent! Excellent! Have a truck camper in bed of truck that pushes the payload limit. Love these bc they don’t stiffen suspension but engage when needed. Handles so well!
This RAS is very easy to install. My truck now sit level with my boat attached would highly recommend this system
Gamechanger for us. We have multiple drivers using the vehicle in many different terrains and trailer combinations and the Roadmaster has always impressed us!
Instantly can feel the benefits when went over bumps not even carrying a load and towing a trailer made it feel like I wasn’t even towing one with my f150
You couldn't ask for an easier installation. If you can take the wheels off, you can install these. Took me about an hour to install both. I went with the HD kit for my 2x4 F150 and set it at 40%. This raised the rear end about 2 inches so it has a very aggressive stance now. I haven't pulled our camper yet but driving around town I have noticed a much stiffer ride. Will give an update after I pull the camper to see if the bounce is reduced or not.
Already installed on my truck took about 45 minutes drives great
Well I haven’t towed yet but empty it an improvement. Handles a lot better especially cornering. Not as bouncy as it was before install and it surprisingly doesn’t ride stiff at all.
Product quality is first rate. Installation was straight forward but not for the faint of heart.
Eric
7/3/2022
Great I convinced my son in law to install also.We both love it
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Michael
12/25/2021
Its been a year since I installed my Roadmasters. Would I do it again? Absolutely! They have made my travel trailer pulling such a better experience. In addition, my daily commute has been a pleasure as well.