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-YHD
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Our Price: $549.00
Vehicle Suspension

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RAS Rear Axle Suspension Enhancement - RAS3611-YHD
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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-YHD can be ordered online at etrailer.com or call 800-298-8924 for expert service.
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RAS Vehicle Suspension - RAS3611-YHD

  • 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-YHD Custom Active Suspension System for OEM Leaf Springs - Rear Axle



This Product Fits The Following Vehicles





Customer Reviews

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

Average Customer Rating:  4.7 out of 5 stars   (134 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-YHD
by:
2017 Ford F-150

Installed on 2017 F-150, made vehicle more stabile, less body roll. And fells more planted to road. Love it so far. 896140



- RAS3611-YHD
by:

Easy installation, although it should be noted the one bolt used for mounting is now a 3/8" Allen head bolt. Seemed to make the pick up ride "more confidently". Haven't used for towing yet as our trailer is on order. Will follow up if our review changes. Looking forward to an improved towing experience using this product coupled with our Hensley hitch. 862655



- RAS3611-YHD
by:

Installed this evening on my 2019 F150 FX4 Crew Cab 5.5 ft bed. On level-ish ground before install the fender well was 39.5 inches from the ground (unloaded). Installed these and set the tension for a 2mm gap with the black spacer in the kit for a 40% increase..... This kit removed a little squat and the fender is now 40.25 inches from the ground (unloaded). Truck rides good unloaded, have not yet pulled the travel trailer with them installed. I will update the next time I tow something heavy that I've towed with this truck before installing these. To set the tension use a 9/16 wrench or socket. The bolt is actuall made for an allen wrench but roadmaster uses silicon to glue what apears to be part of an allen wrench into the bolt. I understand this makes it easier for us to install, but they should use something stronger than silicon as one of mine fell out as soon as I started turning it. See pictures. 850610



- 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 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



- RAS3614-T
by:

Review from a similar RAS in Vehicle Suspension


I have Nissan 2500 van that I have converted for traveling. Its gross weight is 9000 lbs, and with all that is in it everyday it weighs around 7000 lbs. It has enough weight it sags. I occasionally pull a trailer, which makes the sag even worse. I install the RAS, and it added about 1 1/2 inches to the truck height. I haven't pulled with it yet, but around town it rides great. Maybe, a very slight stiffening of the suspension, but nothing like what Timbren does to a truck. These things were terrible to install. The instructions said there wasn't much clearance on this vehicle, so take apart the unit and put the spring hooks on before lifting the vehicle. I thought I was going to have to unbolt the springs. Using a jack in the right place allowed me to finally getting them into place. It did require much frustration, and some choice language before I finally got them installed. I'm still looking forward to towing with them to see if the sag problem is fixed. I do recommend these. Again on a Nissan van they are a b*tch to install. 650068



- 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
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-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-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



- 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

- 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


Comments
The product working beautifully , it dose everything it said it would do. Just came back from a trip to Northern Michigan the my pull behind trailer 28ft on a lot of less then perfect roads and construction the Roadmaster Active Suspension definitely made the travel more comfortable
Robert F - 08/22/2020

97708

- 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


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

- RAS4514-SAT
by:

Review from a similar RAS in Vehicle Suspension


Prompt shipping, good price, happy. The Roadmaster was easy to install and works as advertised. Truck used to squat under weight. Now even with the riding mower in the back, I cant even tell its there. No squat and good handling. Unloaded there is no effect on ride. Cranked to max, raised the rear about an inch. Like them. 364203



- RAS3611-Y
by:

Review from a similar RAS in Vehicle Suspension


Just like your advertising said they were very easy to install. My ride has not been affected it still is a great ride for a truck. After the installation the rear end of my truck was 2” higher which will help when I hook up my camper, instead of sagging now my truck is level they are a great product . Thank you 540473



- 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


I've attached two pictures regarding the items I've recently purchased and installed upon my truck from etrailer.com 610664



- 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


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



- RAS3611-Y
by:

Review from a similar RAS in Vehicle Suspension


Worth every cent. Very good for additional stability, helps reduce drop when trailering. Pulled our 6800# travel trailer to Alaska with our Ford F150, and truck and trailer took a beating, 19000 miles. Easy install. 737836



- RAS3621
by:

Review from a similar RAS in Vehicle Suspension


High quality components. We installed the Roadmasters on my 2000 Ford Excursion yesterday. The instructions for installation were clear and concise. The installation took about 45 min. A god bit of that time spent on jacking, wheel removal and replacement. Not a particularly difficult installation. My impressions after test drive: I think the ride was slightly harsher than before installation, but nothing significant. The sway control was greatly improved. Surprisingly, the vehicle seems to handle bumps better, and unexpectedly, braking seems better. All in all, a good upgrade at a reasonable price. Jim 563475


Comments
Still very happy with the Roadmaster System. The truck is more stable and handles better. Highly recommend them.
Jim E - 09/11/2019

61048

- RAS4611
by:

Review from a similar RAS in Vehicle Suspension


Looks great, can’t wait to install them and see how they work. 471755



- RAS4611
by:

Review from a similar RAS in Vehicle Suspension


etrailer has amazing customer service and after talking through a few options for my 2015 Silverado Crewcab shortbed, we decided this product would be the best fit for what I wanted. The RAS comes put together and installs very quickly. It took me longer to get my tools rounded up and the wheels off than to install the RAS. I did set mine to 40% using the thicker gauge for the coils and it appears that added a little height to the back of the truck. No biggie as I planned on leveling blocks later anyway. The ride is definitely firmer and everything the product states about mitigating body roll, bumps and adding traction has held true so far. While I think the product is a little spendy compared to other options, it does more and is well worth the cost. I haven't had a chance to load the bed down yet, but the experience has been very positive unloaded. Thanks etrailer for excellent customer service and great pricing. 542212


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Ask the Experts about this RAS Vehicle Suspension

  • Comparing Roadmaster Active Suspension for 2018 Ford F-150 4-Wheel Drive
    The differences between the 2WD and 4WD versions of the Roadmaster Active Suspension Kit is simply the installation; so you are going to want the models that fit your 4-wheel drive 2018 Ford F-150, of which you pointed out there are standard and heavy-duty versions: - Standard: Roadmaster Active Suspension Custom Leaf Spring Enhancement Kit # RAS3611-Y - Heavy-Duty: Roadmaster Active Suspension Custom Leaf Spring Enhancement Kit - Heavy Duty # RAS3611-YHD The differences are pretty...
    view full answer...
  • What is the Difference Between the Roadmaster RAS3611-YHD and RAS3611-Y
    The difference between the # RAS3611-YHD and the # RAS3611-Y is that the RAS3611-YHD is a heavy duty suspension enhancement designed to provide up to 3000-lbs of leveling and support; the RAS3611-Y is only designed to provide up to 2000-lbs of support. We do recommend the # RAS3611-YHD for trucks carrying heavy loads frequently or those towing heavy 5th wheels and trailers. These kits are easy to install and require no drilling, just attaching some bolts. I've linked a review video we...
    view full answer...
  • Will Leveling Kit Installed on Front Axle of Truck be Affected by Roadmaster Active Suspension Kit
    The Roadmaster Active Suspension kit part # RAS3611-YHD installs on the rear axle, so it won't be affected by a leveling kit that's installed on the front suspension of the truck.
    view full answer...
  • Suspension Enhancement Recommendation for 2020 Ford F-150
    For your 2020 Ford F-150 4x4 the best suspension enhancement you can install is the Roadmaster Active Suspension kit part # RAS3611-YHD as it gives you the support you are looking for to reduce the sag, the support is adjustable, and unlike other options it doesn't hurt the ride quality of the truck loaded and unloaded. Many report that the ride quality is overall improved loaded and unloaded.
    view full answer...
  • Best Suspension Enhancement for 2012 Ford F-150 Towing Travel Trailer
    The Roadmaster Active Suspension kits like the # RAS3611-YHD that fits your 2012 Ford F-150 is the way to go. It gives you the support you are wanting to reduce the suspension sag and burden on your weight distribution system but also gives you an improved ride quality and stability unlike the other suspension enhancement options out there which is why I recommend it so highly.
    view full answer...
  • Can Roadmaster Active Suspension Enhancement Kit for 2018 Ford F-150 be Used w/ Weight Distribution
    You will absolutely still be able to use a weight distribution hitch when towing with your 2018 Ford F-150 after installing the Roadmaster Active Suspension Custom Leaf Spring Enhancement Kit # RAS3611-YHD. The RAS will provide your truck with a significant upgrade in its handling and combining it with a weight distribution will get you a smooth and comfortable ride. If you do not have a weight distribution hitch I have added a link below to our selection for you to check out.
    view full answer...
  • Best Suspension Enhancement for 2019 Ford F-150 Short Bed Towing Fifth Wheel Trailer
    For what you plan to do with your 2019 Ford F-150 short bed I'd go with the higher capacity Roadmaster Active Suspension kit part # RAS3611-YHD as the extra support will help. You will need a slider hitch with more sliding clearance than usual since your bed is so short. For that we have the Demco Hijacker AutoSlide # DM8550040 which can slide up to 22-1/2 inches automatically. Most slide around half of this which would not be enough. To install the hitch in the bed of the truck...
    view full answer...
  • How do I Pick the Right Roadmaster Active Suspension Enhancement Kit for my 2018 Ford F-150
    We can get this figured out! The weight capacities stated in the description is the amount of weight that these springs will support. These will not add capacity to your payload or the amount you carry but instead take some of the force off of your factory suspension decreasing wear and tear on the system helping it to last longer. In my experience it also helps the handling characteristics of the vehicle by reducing the body roll of the truck. The Roadmaster Active Suspension Custom...
    view full answer...
  • Best Suspension Enhancement for 2017 Ford F-150 to Reduce Towing Suspension Sag
    The RAS systems are by far the best suspension enhancement kits out there for vehicles like your 2017 Ford F-150 to reduce suspension sag. Main reason is that unlike other system this does not make your ride quality when loaded or unloaded (many state that the ride quality improves greatly) and also does not require the maintenance that air bags do as well. For as much as you plan on towing I'd go with the HD model part # RAS3611-YHD which gives 3,000 lbs of suspension support over the...
    view full answer...
  • How To Maximize The Towing Capabilities On My 2016 Ford F-150
    The difference between active suspension and airbags? Both products are going to add stability to the rear axle when weight is added. Both are going to change how the vehicle rides when no weight is on the vehicle. Both are going to be very similar in how they support and react to weight as it moves the back of the truck. With air bags the air pressure can be adjusted at anytime by adding or removing air depending on the load you are hauling or not hauling. The active suspension has a 2000...
    view full answer...
  • Best Suspension Enhancement for 2018 Ford F-150 Towing with Weight Distribution
    The best suspension enhancement we offer for your 2018 Ford F-150 that is towing would be the Roadmaster Active Suspension kit part # RAS3611-YHD. This will give you the support to prevent the porpoising, will improve ride quality and stability, and will reduce suspension sag as well. Other similar options might provide additional support but they will make the ride quality harsher. You will need to reset your weight distribution setup after installing this kit though.
    view full answer...
  • Best Rear Suspension Upgrade for 2018 Ford F-150 for Towing
    The best suspension enhancement for your 2018 Ford F-150 is the Roadmaster Active Suspension Custom Leaf Spring Enhancement Kit - Standard Duty # RAS3611-Y or Heavy Duty # RAS3611-YHD. This kit is the best because it is an active system which continually reinforces your F-150's leaf spring suspension. The force normally put on your truck's leaf springs gets transferred to the RAS Enhancement Kit, allowing your leaf springs to work normally. So they work to keep you level, help with body...
    view full answer...
  • Suspension Enhancement Recommendation for 2020 Ford F-150 Towing 5th Wheel Trailer
    The Roadmaster Active Suspension Kits like the # RAS3611-YHD will be your best option. This kit gives you the adjustable suspension support you are looking for without ruining the unloaded and loaded ride quality like other options are known for.
    view full answer...

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    We've been serving customers since our parts store first opened in 1946 and continue to be recognized by our customers, our vendors and third parties for exceptional service.
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Info for this part was:

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Expert Research:
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Edited by:
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Written by:
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