1. Vehicle Suspension
  2. RAS
  3. Leaf Springs
  4. Rear Axle Suspension Enhancement
  5. Standard Duty
Roadmaster Active Suspension Custom Leaf Spring Enhancement Kit - Heavy Duty

Roadmaster Active Suspension Custom Leaf Spring Enhancement Kit - Heavy Duty

Item # RAS3611-SHD
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RAS Vehicle Suspension - RAS3611-SHD
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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. Lowest Prices for the best vehicle suspension from RAS. Roadmaster Active Suspension Custom Leaf Spring Enhancement Kit - Heavy Duty part number RAS3611-SHD can be ordered online at etrailer.com or call 800-298-8924 for expert service.
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RAS Vehicle Suspension - RAS3611-SHD

  • RAS
  • Leaf Springs
  • Rear Axle Suspension Enhancement
  • Standard Duty

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.


Features:

  • Heavy-duty custom kit converts your vehicle's factory leaf springs into a mechanically active suspension system
    • Actively strengthens leaf springs for improved ride quality with or without a load
  • All-in-one suspension system improves stability, handling, and control
    • Eliminates axle wrap, wheel hop, and bottoming out
    • Reduces dangerous sway and body roll while cornering
    • Keeps your ride level when towing or hauling a heavy load
    • Improves traction while breaking and accelerating
  • Variable-rated coil tension springs automatically adjust to your vehicle's load
    • Activate immediately to support the extra weight
    • Disengage when unloaded, allowing your leaf springs to perform as intended
  • Customizable coil springs can be adjusted during installation to accommodate your towing or hauling needs
    • Independently adjustable for side-to-side leveling of off-center loads
  • Helps extend the life of leaf springs, shock absorbers, shackles, and even tires
  • Durable, epoxy e-coated steel construction
    • Corrosion-resistant brackets on the ends of each unit have a salt spray rating of more than 800 hours
  • Easy, bolt-on installation - no drilling, cutting, or welding required
    • Unit secures under the leaf spring and around the factory U-bolts
    • Fully assembled kit and hardware are included
  • Maintenance-free - adjustments and monitoring aren't needed once installed
  • Made in the USA


Specs:

  • Weight capacity: 3,000 lbs
    • Roadmaster Active Suspension will not increase your vehicle's weight-carrying capacity
  • 2-Year warranty
  • 30-Day money-back guarantee


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.


Diagram of RAS Installed

Roadmaster Active 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.


How RAS Works

Close-Up of RAS Tension Spring

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.


Eliminates Axle Wrap and Wheel Hop

RAS Eliminates Axle Wrap

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.


Reduces Sway and Body Roll

RAS eliminates sway and body roll

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.


Levels Your Ride and Improves Traction

RAS Levels Your Ride

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.


Customizable Coil Tension Springs

Adjusting Spring With Spacer

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.


Easy, Bolt-On Installation

RAS Once Installed

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.


Corrosion-Resistant Steel Construction

RAS Construction Close-Up

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.



3611-SHD RAS Custom HD Active Suspension System for OEM Leaf Springs - Rear Axle

3611S-HD

Installation Details RAS3611-SHD Installation instructions

This Product Fits The Following Vehicles




Video of Roadmaster Active Suspension Custom Leaf Spring Enhancement Kit - Heavy Duty

Videos are provided as a guide only. Refer to manufacturer installation instructions and specs for complete information.




Video Transcript for Roadmaster Active Suspension Kit Review

Today, we're going to take a look at the Roadmaster Active Suspension Kit, part number RAS3611. The Roadmaster Active Suspension Kit is going to help to convert our basic leaf spring kit into a mechanically active suspension. This is going to provide great assist for vehicles with the rear leaf springs without compromising any of their ride quality. It's going to help to eliminate any of the bottoming out or axle wrap that we can sometimes get, which is going to lead to great improvements and road handling. It helps to reduce the sway and the body roll that we often we get during cornering. The Roadmaster Active Suspension Kit works with or without a load. It's going to absorb and dissipate any load force that we might have when our vehicle is loaded, and whether it's loaded or unloaded, we're going to have improved vehicle stability, handling, traction, and control.

Now, when we receive our suspension kit, it's all going to be preassembled, really easy straight forward installation. We've got both sides here. We're going to have our instructions, our warranty registration, and even our spacers so we can fine tune the system. The thinner one, that's going to give us a 25% improvement. The thicker one, that's a 40% improvement. Now, the system itself is going to have a few main components.

We've got our eye-loop strap. We've got our main spring here in the center. This does all the work, and then, we've got our axle brackets here where they'll mount onto the truck. Like I said, really simple installation. We're only going to have to take care of getting one bolt to install it on the vehicle.

Then, we can make our adjustments on our spring. Now, our eyehook, our spring, and our brackets are full epoxy-coated. This is going to offer us up to $800 of salt spray protection. Even if we're using them up North or here in the Midwest, we're not going to have to deal with a whole lot of rust and corrosion. The threaded rod, all of our moving points here, and our bolts are going to have spacers that are fully treated as well, again to help prevent rust, and then, we're going to have some high-quality fasteners here to use as jam nuts to get it all locked into place once we've got it where we want it positionwise. Here on our eyehook, you can see we've got our articulating ball/socket setup. The same thing here on the other side, a rotating bar setup here.

This is going to allow both of our leaf springs full maneuverability, so we'll never have any of those binding situations to where it's kind of bound up or our spring gets caught, anything like that. The axle brackets themselves are fully adjustable to fit a wide variety of vehicles. You want to use whichever one most closely matches your setup. To start our install, we need to take the tires off each side of the vehicle. The way we want to set it up is we want the tires to be up off the ground but we want it to be supported or resting on jack stands. You can use those on each side of the axle and also in the middle on your center differential, they'll instruct you to use a jack. Just follow the instructions, they're going to tell you exactly how to get it set up so you can do the work. Then, we want to take the center caps, each wheel is going to be a little bit different. It might look just like this, it might have a center cover, or whatever, but remove both rear wheels once you got your truck properly set. For installation, we're going to grab the spring pack so that when our hook is oriented toward the back that our main bolt comes into the top part of the bracket. You see there Then, we want our hook to go right around our eye on the back of the spring there. We'll grab a couple of either 3/4" ratchets or 19mm and let's take our bolt out that's here on the end. It holds our spacer into place. Take that on out. Now, what we want to do is get one of our 5 holes so that we can have our bolt and spacer here behind the U-bolt block. To extend this length, what we need to do is hold on to the threaded rod while we turn our spring toward us. Then, we can bring our bolt back in and we go through the arm on our bracket, and of course we want to put our spacer on there. Then, we'll add on our nylon locking nut. You want to be careful if you've got any sensors or any wires or anything like that, that we don't have it pinched in behind there. Then, we're ready to tighten down our bolt. Now, we're not going to tighten our bracket down so much as to where it actually sandwiches our U-bolt here. What we're looking for is to tighten it down enough to capture our spacer so it won't move. That's going to be oriented right there just underneath our spring and all the way back against that block. Then, we'll take the slack out of the system by doing the opposite of what we did to extend it. Now, we want to take another look at our eyehook here. We want that to be centered on the spring pack. Then, we'll feel our spring actually get tight while we're turning it. Right there, it's starting to tension up a little bit. Now you see everything is locked into place and it won't be moving. Now, it's time to make our adjustment. While holding the nut that's located here at the end of our threaded rod, we'll need a 22mm ratchet. We can come to the other end with our 12mm and start tightening our spring. As we turn our small nut or bolt located here on the end, we'll start to see the gaps in our springs increasing. Periodically, we're going to want to take our disc and check. These discs, white as we said is a 25% increase, the black is a 40% increase, and they should barely pass through those rings. As you see right now, they're not and we need to keep going with it. Here you can see our spacer just barely passing through there, so we know we've got it set properly. If we're looking for extra performance out of the system, we can switch from the 1mm up to the 2mm, and we want to follow that same process. Now, we'll head over to the driver side and repeat that same exact process. Now, we'll get our tires put back on here and torqued down to specification, and then, we'll go ahead test out that system and see how it worked. Now that we've seen how it works, how it can help us, and how to install it, that's going to complete today's look at the Roadmaster Active Suspension Kit, part number RAS3611.


Customer Reviews

Roadmaster Active Suspension Custom Leaf Spring Enhancement Kit - Heavy Duty - RAS3611-SHD

Average Customer Rating:  4.8 out of 5 stars   (101 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.

- RAS3611-Y
by:

Review from a similar RAS in Vehicle Suspension


I’m impressed by the quality and engineering of this product. The person who designed it should win an award! I installed this on my 2013 F150 in preparation for hauling around my 1998 24’ coachman I’ve been working on fixing up all winter. I didn’t want a solution that would stiffen up the trucks ride because it’s very comfortable. I can’t feel any change in ride. Installation was very easy, took about an hour for everything and just a few tools. I haven’t towed with it yet but I did hook my trailer up and it didn’t squat like it did before. So far, very impressed. I’m glad I didn’t mess with airbags and all. 629033


Comments
I love this product. It has exceeded my expectations. I absolutely recommend this product as an effective, efficient and simple solution for towing.
Randy H - 04/16/2020

73397

- RAS3611-B
by:

Review from a similar RAS in Vehicle Suspension


product came very fast! all was packaged extremely well and no damage to any of the items I ordered. I have not installed them yet but I am excited to get them on and hopefully see that they take that little extra sag out of my truck while pulling my travel trailer! watched many video's on the installation process and seems to be very simple and straight forward... thanks etrailer 307783



- RAS3611-Y
by:

Review from a similar RAS in Vehicle Suspension


I own a 2017 F150 and placed the RAS3611-y kit last year. So far the ride improvement and the handling when pulling my equipment trailer with 7000# load is great. Air load adjusters would have been a mistake. Thanks George J. for a great product. No need for load levelers with this kit. 675401



- RAS4611TD
by:

Review from a similar RAS in Vehicle Suspension


Very easy to install and make a big difference towing a trailer! 717907



- RAS3611-Y
by:

Review from a similar RAS in Vehicle Suspension


I have a 2016 F-150 4x4 with a 2 inch leveling kit and 305 tires. I am towing a 26RR Grey Wolf camper. I beleave it is 4992 lbs dry wait and 7775 lbs loaded. It is meant to be pulled with 1/2 ton trucks. Want to give all specs to be fair to the product. The product was easy to install. I adjusted spring to the black disk. When I hooked up the camper I notice my truck definitely squated less. The towing ride was less bumpy. That is it. It definitely did not improve fuel mileage. I am still at 8.5 miles to the gallon. That is on flat ground, I live in Florida. Still could not go over 65mph without camper feeling loose on the road. 3 stars for now until I tow other trailers. It was an improvement but not as much as I was expecting. Still going to go truck shopping for a bigger truck to solve my towing needs. Side note: truck looks great and rides way better without a trailer in tow. 2/22 inf 744719


Comments
The Roadmaster Active Suspension is designed to improve your trucks stability, handling, and control by keeping the truck level even when youre towing. When you say that your camper feels loose on the road, it sounds like your trailer starts to sway at speeds above 65 mph. The best solution for keeping your trailer tracking straight while rolling down the road is to use a weight distribution system with sway control. A weight distribution system will not necessarily improve your fuel mileage, but it will improve your experience towing your 30ft trailer. I have linked a help article on Weight Distribution systems for more information.
-- Victoria B - 01/27/2020

64875

- RAS3611-B
by:

Review from a similar RAS in Vehicle Suspension


2018 F150 4x4 owners pay attention to this review. I received the order today and unfortunately it was the wrong kit for my vehicle. Even though etrailer confirmed that a RAS3611-B is correct for my truck, it is actually for a F150 4x2. I contacted etrailer and costumer service rep was great and verified that initially the same part number came up for my vehicle, causing the confusion. My mistake, etrailer mistake. The correct kit for a 2018 Ford F150 4x4 is RAS3611-Y. etrailer is splitting the cost of return shipping and my correct kit has been ordered. etrailer has great costumer service. 567680



- RAS3611-Y
by:

Review from a similar RAS in Vehicle Suspension


2016 Ford F-150 XLT 4x2 - We would get a gallop when we would be towing our travel trailer and after reading several reviews for the Roadmaster Active Suspension System we decided to purchase the system. Just like most of the reviews it took more time to jack up the truck and remove the wheels then it was to install the system. It did raise the bed of the truck about an inch. Anyone who owns a late model F-150 will tell you that it rides just like a sedan. It was no different after the installation. I did take a short drive with the trailer attached and it was a smooth ride (no gallop). At this point I would consider this a success. The one thing that I would like to point out is if you have the same F-150 model that I have I would purchase RAS3611-B not RAS3611-Y. The “B” model has a block that covers the emergency brake bracket on the passenger side install. 754937



- RAS4611
by:

Review from a similar RAS in Vehicle Suspension


I bought this based on I think the same product I bought several years ago for a 1997 Dodge Ram 1500. At that time, I bought a kit for for a Ram 2500 and was very impressed. I put a truck camper on the Dodge and I don’t think it settled an inch and when I drove it I hardly knew the camper was back there at all. No sway and no handling problems at all. This time I bought the kit for a Nissan Titan, pulling a 25’ travel trailer (about 7000#). The truck rear still settles and is not in a level attitude in transit without the weight distribution hitch. The suspension kit makes it better but not as much as I expected. 565780


Comments
Working just fine.
Jim - 10/02/2019

62634

- RAS4611
by:

Review from a similar RAS in Vehicle Suspension


Haven't towed or hauled anything heavy with it yet. Unloaded it does help with body roll in turns. The ride is slightly improved as the truck doesn't bounce as much. 519027



- RAS3611-Y
by:

Review from a similar RAS in Vehicle Suspension


Worked as described and made a big improvement towing our travel trailer. 526259



- RAS3611-Y
by:

Review from a similar RAS in Vehicle Suspension


I did a lot of research to determine if I should use airbags or the RAS. For my application the RAS was the better choice. No matter who I asked, no one had a negative comment about this product (RAS). I tow a Jayco Travel Trailer (TT - 9000lbs) and while I have towed boats for years I was new to the type of tongue and hauling weight that the TT exerts on my vehicle. Installation was a breeze. I spent more time preparing my tools and finding my 22mm wrench than I did installing the RAS. There are many Youtube videos on how to install the RAS and I do recommend you watch them. My ride (F150 Echoboost) was smoother while pulling the trailer; however, I didn't feel any change to my daily driving (positive or negative). If you're using a WDH, I recommend these over the airbags. The airbags can be counter intuitive since the WDH should fix most of the weight distribution and level. The RAS works well with all WDH's and once installed you don't have to make any changes to it, unlike the airbags. Get the RAS - you'll be happy you did. 399233



- RAS3611-Y
by:

Review from a similar RAS in Vehicle Suspension


Delivery was on time and the product was good and ready to go! Jacked up the truck put it on stands and 1hr 30mins later I was driving off for a test run. Works just like it says it would. No body roll, takes off so much smoother, and I did about 40 over those big rolling neighborhood speed bumps and it was super smooth. Before RAS it would have a real bouncy feel over the speed bump now it attack the bump if you know what I mean. I tow a 25' trailer so I can't wait to see how much bounce is taken out when I'm driving over the dippy roads through the mountain pass here in WA. Thanks E-trailer! 313970


Comments
My initial review was was 5 star rating and after one year of use it still remains a 5 ??. I have a chance now to tow my 25’ travel trailer for a season and works great. It helps with proposing and reduced the little sag when I have her loaded up for a long trip. Highly recommend RAS with a WDH combination for smooth comfortable towing experience.
Doug D - 11/05/2017

30566

- RAS3611
by:

Review from a similar RAS in Vehicle Suspension


Repeat customer. Just installed my second set of Roadmaster Active Suspension springs. Have not towed with them yet; however the ride on my 2014 F150 6.5' bed pickup is noticably smoother. I expect the result when I do tow my travel trailer to be the same as with my previous truck - night and day difference (no more "white knuckle towing)! 319927



- RAS3611-SLHD
by:

Review from a similar RAS in Vehicle Suspension


Great product! It does what it advertises and is a breeze to install on my F-150 but a little harder on the 350 since you have to remove the overload spring. Works great helps keep truck perfectly level when towing my 10k lb trailer. Highly recommend. 654976



- RAS3611-B
by:

Review from a similar RAS in Vehicle Suspension


After going back and forth with your install techs before purchasing they said what product to buy. I order it and doesn't fit my truck due to flipped rear axle I gave them pics so product was returned 411832


Comments
Hello David, I am sorry this product did not fit your truck. I spoke with our Roadmaster Techs and they told me this kit is not a fit for your truck since your truck suspension is not factory spec. This kit is only confirmed to fit the fit-guided vehicles with factory suspensions.
-- Sarah H - 08/02/2017

26776

- RAS4611TD
by:

Review from a similar RAS in Vehicle Suspension


I really like the suspension add on. It keeps my truck level when towing our 9000 lb camper bumper pull. I get great stability on the road and it helps with handling the tongue weight on my 2013 Toyota Tundra 1/2 ton. It doesn't change the stiffen the suspension of my truck until I add weight. So, you don't notice it with normal driving. Installation went smoothly. The components were high quality and heavy duty. I recommend it. 577747



- RAS3611-Y
by:

Review from a similar RAS in Vehicle Suspension


As with many other reviewer's I researched several different brands and types of systems. The springs have helped out immensely with the tongue weight I have to pull with my F-150. I notice a 2 to 3 inch difference in the ride height with the springs on while towing approximately 1200 to 1400 pounds of tongue weight. It also takes out the bouncy feel from truck to trailer on non-smooth roads. The installation is very simple and quick. I highly recommend this product. 443416



- RAS3611-Y
by:

Review from a similar RAS in Vehicle Suspension


Product was very easy to install. Very well made. It took me about 35 minutes to install both sides once the truck was on Jack stands. Product did raise the rear of my truck a little. Can't say how much because I forgot to measure before I started. Truck still rides nice, no harshness or strange noises. I purchased the roadmaster active suspension to help eliminate squat and improve driveability while towing our 7500lb travel trailer. Hopefully I will get to try it out with the trailer soon. 595303


Comments
RAS is still working great . I have to make a correction. Our trailer is 8005lbs empty and it is a pull behind not a fifth wheel. Tongue weight is about 900lbs with my motorcycle in the garage and the garage is in the front. When used in conjunction with my weight distributing hitch, my truck rides great and handles great.
Aaron - 01/07/2020

64085

- RAS3611-Y
by:

Review from a similar RAS in Vehicle Suspension


I have had this product a couple of months now with two trips pulling my travel trailer. It has helped in leveling out the truck/trailer so that less pressure is applied to the weight distribution system. Product is easy to install, I didn’t even need to take the tires off. It also is easy to adjust to fit different hitch weight. It did make my truck ride a little ruff but not to a point that is uncomfortable. I chose this product over air type products as I didn’t want to have to mess with it. I would recommend this product. 593932



- RAS3611-B
by:

Review from a similar RAS in Vehicle Suspension


After debating whether to go with these or airbags for a year I’m very happy with my decision to purchase these for my 2015 F150. Installation was simple, the difference in ride and towing is great, and there’s no maintenance. With 1,000lbs of trailer tongue weight and improved stability, I’m a happy camper! 583586



- RAS4611
by:

Review from a similar RAS in Vehicle Suspension


arrived as expected. Extremely easy to install as the spring assemblies were completely assembled. Took longer to take tires on and off than to install spring assemblies. Effect on ride when towing has yet to be determined; I am expecting a big improvement in ride. 569774



- RAS3611-Y
by:

Review from a similar RAS in Vehicle Suspension


I've only done a couple quick test drives with the product after installation. However so far am i initial impression is very positive. 450228



- RAS3611-Y
by:

Review from a similar RAS in Vehicle Suspension


Thanks I put the springs on today’s. I have one question, I adjusted them to the 20% / one millimeter. Can they be adjusted to the 40% with truck sitting on ground if my trailer still has the bounce in it when hooked, or will I need to lift it off ground to readjust if needed. 590227


Comments
According to the manufacturer, when the suspension system is adjusted, the vehicle must be raised with the axle hanging free. This releases most of the spring tension.
-- Mike L - 12/12/2018

46660

- RAS3611-Y
by:

Review from a similar RAS in Vehicle Suspension


For anyone on the fence, I will say it does work well. I'm not sure it is worth it, but that's the price. Also, as others have said, finding your tools is the hardest part of the Installation. 2018 F150 Platinum pulling a 2018 Passport 2920bh 546842



- RAS4611
by:

Review from a similar RAS in Vehicle Suspension


The product was very easy to install, and was very happy it didn't effect the ride of the 1/2 ton truck. Looking forward to see how it handles towing my 28ft travel trailer 690798


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Ask the Experts about this RAS Vehicle Suspension

  • Recommended Easy to Use Suspension Enhancement for 2019 Ford F-350 Super Duty
    We have the perfect suspension enhancement kit for your 2019 Ford F-350 Super Duty pickup, the Roadmaster Active Suspension Custom Leaf Spring Enhancement Kit. This is the best because as the name implies it is an active system which works to continually reinforce your original leaf spring suspension and is extremely easy to install and requires zero maintenance once have them on your F-350. There are two different kits depending on your truck: - Roadmaster Active Suspension Custom...
    view full answer...
  • Roadmaster Active Suspension System for 2012 Ford F-250/F-350 with Factory Overload Springs
    If your 2012 Ford Super Duty has an overload spring ABOVE the leaf spring pack then you would need to use # RAS3611-SLHD. Then, to use the Roadmaster active suspension system # RAS3611-SLHD, the top overload spring will have to be permanently removed.
    view full answer...
  • Will Roadmaster Active Suspension Kit Fit with Air Lift Air Bags on a 2012 Ford F-250
    I contacted RAS about whether the # RAS3611-SHD suspension kit will fit with the Air Lift air bags on your 2012 Ford F-250. They confirmed that the two parts may be able to be used together. You'll need to make sure, on your truck, that there is at least 3-1/4 inches between the u-bolts for spring stack and the air bag kit you have. If there is then you have room to install the RAS kit.
    view full answer...
  • Which Roadmaster Active Suspension kit for 2017 Ford F-250 Towing Fifth Wheel
    Since you do not have factory overload springs on your 2017 Ford F-250 the best Roadmaster Active Suspension kit is the part # RAS3611-SHD which has the higher 3,000 lb capacity and also fits the non-overload spring models like you have. This will give you the adjustable support you are wanting and will also act similar to an anti sway bar as well in how it will improve handling.
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  • Does RAS Enhancement Kit Raise 2019 Ford F-350 Super Duty
    The Roadmaster Active Suspension enhancement, part # RAS3611-SHD for your 2019 Ford F-350, won't raise the unloaded right height of your truck. The RAS stiffens and helps support your existing suspension helping it to carry heavy loads and last longer. You likely will experience a gain in height in the rear when loading if you were previously experiencing sag with your truck.
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  • Will Roadmaster Active Suspension Enhancement Void Warranty of 2013 Ford F-250
    When you install an aftermarket part on your vehicle like suspension enhancement in this case, you are protected by the Magnuson–Moss Warranty Act. This act states, in part, that unless the installation and the part caused a problem then the warranty cannot be voided. The Roadmaster suspension enhancement kit part # RAS3611-SHD is a great option for suspension enhancement for you 2013 Ford F-250 and would not void any warranties when properly installed.
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  • Bouncy Ride from the Timbren Rear Suspension Enhancement System on a 2012 Ford F-250
    I spoke to my contact at Timbren about the Timbren Rear Suspension Enhancement System part # TFR250SDG for your 2012 Ford F-250 and they informed me that the upper metal bracket cannot be removed. Therefore, the bump stop cannot be directly attached to the frame without this bracket. I have two options for you. You can use a shorter bump stop that will reduce the occurrence of the bump stops engaging. For this you would want to use the Replacement Rubber Spring for Timbren Rear Susp...
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  • Recommendation To Reduce 5th Wheel Trailer Sway
    If you are not pulling the trailer level, I recommend making that adjustment. This may mean adjusting your king pin on your 33 foot Rockwood Ultra Lite Camper or adjusting the height on your Companion 5th wheel hitch # BWRVK3500-5W. It would definitely be worth moving the angle closer to your cab because that will put a little more weigh over your axle in your 2016 Ford F-350. Having the tongue too high can cause the trailer to move and sway, but you may also want to consider using rear...
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  • Can Air Bags be Installed on a 2011 Ford F-250 with B&W Gooseneck Hitch Installed
    All of the air spring kits for the 2011 Ford F-250 mount to the sides of the truck frame rails. The issue is that the B&W gooseneck hitch brackets also install in the same location but on the outsides of the frame rails. This would not be a problem if the B&W brackets holes in them to match the frame holes located directly above the axle. This is the hole that nearly all of the available air spring kits use for your truck. You would have to drill the holes into the B&W brackets. If you...
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Info for this part was:

Expert Research:
Michael H
Expert Research:
Jameson C
Video Edited:
Jacob T
Video by:
Kathleen M
Test Fit:
Randy B
Written by:
Mary E
Updated by:
Sarah W

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