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

Roadmaster Active Suspension Custom Leaf Spring Enhancement Kit

Item # RAS3611
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Our Price: $469.00
Vehicle Suspension

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RAS Leaf Springs Vehicle Suspension - RAS3611
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2,000-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 part number RAS3611 can be ordered online at etrailer.com or call 800-298-8924 for expert service.
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RAS Vehicle Suspension - RAS3611

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

2,000-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:

  • 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: 2,000 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 RAS 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 - RAS3611

Average Customer Rating:  4.8 out of 5 stars   (139 Customer Reviews)

2,000-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
by:
Ford

Good installation instructions. Product raised my 1996 Ford E350 back to stock height which I wanted. Handles washboard roads better. I am satisfied. 762608



- RAS3611
by:
2014 Ford F-150

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
by:

only drove twice so far. already feel great control of the rear end. much increase of positive traction, with very little drop. extremely easy installation! perfect step by step(with pics) instructions included. also easy to follow video, somewhere. I cant remember where I watched. not hooking up trailer till next weekend, after alignment. maybe I'll be back. overall the "active" concept in this product is exactly what an intermittent hauler wants. there is no feel of preload on leafs when not loaded. the product creates much better roll stability. 2013 silverado 2500hd 691029



- RAS3611
by: 09/05/2020

Package arrived within 2 days after I ordered late in the evening. Well packaged, I have checked both the instructions and a couple of U-tube videos which show how easy they are to install. I will update upon completing the install, and had a chance to hook up our trailer. 874696



- RAS3611
by:

Extremely pleased with the fast shipping and communication. Product arrived as expected and installed it today. Really pleased with the transaction. Highly recommended. 862711



- RAS3611
by:

This product is awesome, even the ride without a load was better. Great, I suggest this to anyone. 848954



- RAS3611
by:
2013 Ford F-150

The Product was easy to put on. I had a lot of trouble getting my back tires off. The instructions were okay, I got confused a couple of times. The video on youtube is great. I used that several times. 845780



- RAS3611
by:
2013 Ram 2500

I originally bought the product to try and bring my 2013 Chevrolet 2500 back to stock height. It has a surveyor pack tool system and tools weighting just over 1000 lbs, since the day it was new. The product did the job. The part that was a great surprise was sway control with all that weight. 6 months later I retired, sold the tool box system, but left the product on the truck because we also pull our 28 ft. travel trailer (10,000 lb) with the truck. Don’t need the lift because of the weight distribution system with anti-sway, but the truck is much more stable on the interstate than it used to be. With no load I really don’t notice the ride is any worse when hitting a bump. I love it! 777887



- RAS3611
by:
2017 Ford F-150 Raptor

Great customer service! All throughout the order, I was notified up-to-date info on the status. And the product was just what I had ordered. This company reminds me of that MEGA online company with how they processed the total order. Keep up the good work! 669310



- RAS3611
by:

Excellent product and ease of installment was amazing. 653516



- RAS3611
by:
2014 Ford F-150

I have been using Roadmaster Active Suspension for a year now. The product works as advertised and has greatly improved the stability of my F-150 pulling a 7500 travel trailer. 444685


Comments
I have my RAS system for two years now and it performs as well the day I installed it.
Chris - 10/21/2018

44879

- 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



- 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

- 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


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-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



- 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

- RAS4611TD
by:

Review from a similar RAS in Vehicle Suspension


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



- 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



- 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


I installed this kit on a 2017 Nissan Titan and can be installed very easy. The handling on my truck has improved tremendously. I would recommend this product to everyone. 528359


Comments
When I installed it I set it up for 25 load and I pull a 9000 lb dry weight 5th wheel. The suspension kit is still doing its job.
Bill - 06/29/2019

57259

- RAS4611
by:

Review from a similar RAS in Vehicle Suspension


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


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Ask the Experts about this RAS Vehicle Suspension

  • Recommended Roadmaster Active Suspension Kit For 2018 Toyota Tundra With Level Kit
    I do have an option for you but the Roadmaster Active Suspension Custom Leaf Spring Enhancement Kit part # RAS3611 is not a fit for the 2018 Toyota Tundra however the Roadmaster active suspension systems are compatible with a leveling kit. I recommend to use the Roadmaster Active Suspension Custom Leaf Spring Enhancement Kit part # RAS4611TD which is going to support the leaf springs to level out the ride. This system helps to extend the life of your suspension on the truck especially...
    view full answer...
  • Will the Roadmaster Active Suspension Kit Part # RAS3611 Increase Payload Capacity
    No, the Roadmaster Active Suspension Kit part # RAS3611 will not increase either the payload or towing capacity of your 2015 Chevrolet Silverado 2500 as with all of our suspension enhancements. They will work to help take some of the stress off your existing components by stiffening the leaf springs. This will in turn help to improve handling, stability, and vehicle sag. The above kit has a weight capacity of 2,000 lbs which in the case of your 5th wheel trailer would be pin weight....
    view full answer...
  • Is Roadmaster Active Suspension Kit Needed In Addition to Weight Distribution
    The answer to your question will depend on how you use your truck. Vehicle-based systems like the Roadmaster Active Suspension system or air bags will work just fine with a weight distribution system, but they work best to suspend weight being hauled in the bed of a truck or in a vehicle's cargo area, while a weight distribution system does a better job of transferring a trailer's tongue weight from the rear tow vehicle axle to the front. If in addition to towing you also frequently carry...
    view full answer...
  • Which Roadmaster Active Suspension Kit Fits 2020 Ford F-150 Raptor
    We do have a Roadmaster Active Suspension system part # RAS3611 that is a confirmed fit for your 2020 Ford F-150 Raptor and is the best option for suspension enhancement. Unlike other options this gives the support you want while also improving ride quality and handling. Most options end up making the ride quality pretty harsh.
    view full answer...
  • 2020 Ford F-150 Raptor Suspension Enhancement for Towing Camper Trailer
    The best suspension enhancement we offer for your 2020 Ford F-150 Raptor is the Roadmaster Active System part # RAS3611 as it gives you adjustable support like you are wanting to reduce the sag but it also doesn't make the loaded or unloaded ride quality harsh like other options. And also isn't as high maintenance as the air bag kits.
    view full answer...
  • Roadmaster Active Suspension System Compatibility with 2017 Nissan Titan XD
    The Roadmaster Active Suspension Kit # RAS3611 is a confirmed fit for your 2017 Nissan Titan XD 4WD diesel truck by the manufacturer. We have not shot a video of that particular install yet, but I have attached a couple videos of similar installations to assist. The RAS is easy to install and requires no welding, cutting, or drilling. It converts your basic leaf springs into mechanically active suspension that absorbs and dissipates load force for better stability and control whether...
    view full answer...
  • Best Suspension Enhancement for 2019 Nissan Titan XD Towing Trailer
    The best suspension enhancement for your 2019 Nissan Titan XD is the Roadmaster Active Suspension Custom Leaf Spring Enhancement Kit # RAS3611 because it is an active system which works to continually reinforce your Nissan's original leaf spring suspension. The way it works is really simple but extremely effective: the force normally put on your truck's current springs - especially when towing but also when carrying cargo or when making a tight turn - gets transferred to the RAS Enhancement...
    view full answer...
  • Correct Roadmaster Active Suspension Kit for 2018 Ford F-150
    There is a Roadmaster Active Suspension Kit that will work for your 2018 Ford F-150 but # RAS3611 is not a fit for your truck. The exact model number of Roadmaster Active Suspension Kit you want for your F-150 is going to be # RAS3611-B.
    view full answer...
  • Compatibility of Roadmaster # RAS3611 On 1999 Ford F-350 Dually
    On your 1999 Ford F-350 dually it sounds like you are looking for the best option for a smoother ride and that you already have the Firestone Ride-Rite Air Helper Springs # F2550. If so, do you have the Firestone Ride-Rite LS Rear Shock Absorbers # F4354 designed to work with those air bags on your vehicle? If not, I recommend adding them. You also already have the SuperSprings Custom Suspension Stabilizer and Sway Control Kit # SSA13 which I can see in the photo you attached. Based...
    view full answer...
  • Roadmaster Active Suspension Kit for 2002 Ford F-250/350
    The correct Roadmaster Active Suspension Custom Leaf Spring Enhancement Kit for your 2002 Ford F-250/350 is the part # RAS3611 for the Standard Duty or # RAS3611-HD for Heavy Duty, which offers an extra 1,000 pounds of capacity. I don't believe there is a part number stamped onto these units so what you can do is compare the used set you're looking at with the images we have of these on the product pages or even send me a picture directly and I can try to verify. If you want to be safe...
    view full answer...
  • 2019 Ford Raptor with Active Fox Shocks Suspension Enhancement to Reduce Sag When Towing
    For your 2019 Ford F-150 Raptor that has the factory upgraded (for the year 2019) Fox active shocks we have suspension enhancement kits that will help reduce sag when towing like the Roadmaster Active Suspension Kit part # RAS3611 that you referenced. I really like this kit as it gives you additional support like you are wanting to reduce sag, reduces quite a bit of sway, and also is adjustable unlike most of the other options so you can tailor exactly how much additional support you need/want....
    view full answer...
  • Suspension Enhancement to Reduce Sag While Towing with 2018 Chevy Silverado 2500HD
    I recommend the RAS leaf spring enhancement, part # RAS3611, for your 2018 Chevy Silverado 2500HD. They help take the sag out of your truck when you're towing but they don't cause your unloaded ride to be rough or uncomfortable. I recommend the RAS because they're easier to install than air bag kits, which you said you don't want to mess with, but are still adjustable to accommodate the weight you're adding when towing. You make the adjustments when you install them and then leave...
    view full answer...
  • Recommended Roadmaster Active Suspension for 2017 Chevy 2500HD Diesel Towing 13,000 Pound Trailer
    The 2,000 pound standard RAS for your 2017 Silverado 2500, part # RAS3611, is going to be enough to help you tow your 13,000 pound Keystone. If you're only towing the trailer a few times a year this is the route I would go. If you're towing a lot more often then that the HD system, part # RAS3611-HD, is the way to go.
    view full answer...
  • Suspension Enhancement Kit Recommendation for 2016 GMC Sierra 3500 Towing Fifth Wheel Trailer
    The Roadmaster Active Suspension Kit part # RAS3611 would be a great suspension enhancement setup for your 2016 GMC Sierra 3500. You would not need air bags on top of these. Since these will give you the additional support you need the air bags would be redundant.
    view full answer...
  • Will Suspension Enhancement Increase Cargo Carrying Capacity of Truck
    Suspension enhancement products, such as those from Timbren and Super Springs that you mentioned, are designed to essentially enhance the vehicle's suspension. This enhancement will provide a smoother ride under load, reduce rear end sag, and increase the factory suspension's lifespan. These products will not, however, increase the actual capacity of the vehicle they are installed on. This is simply because a truck's capacity is set by numerous factors, including the rear axle, tires and...
    view full answer...
  • Recommended Suspension and Sway Control for Springdale Trailer and 2018 Ford F-150
    The Roadmaster Active Suspension Custom Leaf Spring Enhancement Kit - Heavy Duty # RAS94FR is rated for up to 3,000 lbs and the # RAS3611-B rated for 2,000 lbs are both good options for suspension enhancement to reduce sag. If you want to reduce sway then you'd be better off using a weight distribution system with sway control integrated. I recommend the Strait-Line Weight Distribution System w/ Sway Control - Trunnion Bar - 12,000 lbs GTW, 1,200 lbs TW # RP66084 along with hitch ball...
    view full answer...
  • Which Suspension Enhancement Kit is Best for 2019 Ford F-150 Raptor
    The best suspension enhancement solution out there for what you are looking for on your 2019 Ford F-150 Raptor is the Roadmaster Active Suspension kit # RAS3611 as it gives the support you are wanting to reduce the sag when carrying cargo weight or towing but actually improves the ride quality and handling of the vehicle whereas basically every other option out there is going to sacrifice ride quality.
    view full answer...
  • Suspension Enhancement Recommendation to Help Ride Quality of Winnebago Minnie WC321RK
    For what you described the Roadmaster Active Suspension system part # RAS3611 is your best option. The additional support will help with bottoming resistance and we've found also greatly helps with overall stability and ride comfort. Many report that after installing these it feels like a thicker rear sway bar since the vehicle just handles so much better. The HD version was not designed for your vehicle so I would not recommend it.
    view full answer...
  • Recommended Suspension Enhancement for Leaf Spring Shudder While Towing with a 2014 Ford F-150
    Since the issue is with your leaf springs flexing I recommend using a Roadmaster Active Suspension (RAS) Custom Leaf Spring Enhancement Kit for your 2014 Ford F-150 as opposed to a Firestone Ride-Rite kit. The reason being that the RAS gives support directly to the leaf spring while the Firestone alternative will only come into play once when your vehicle is under load. If you have a 2WD then you need the kit # RAS3611 but for a 4WD you need the kit # RAS3611-Y. Please note that neither...
    view full answer...
  • Roadmaster Active Suspension for a 2012 Ford F-150 FX4 SuperCrew Short Bed 4x4
    For your 2012 Ford F-150 FX4 SuperCrew 4x4 you will need Roadmaster Active Suspension system # RAS3611-Y. This model is for 4x4s but excludes regular cab models as well as the Raptor. The other one, # RAS3611, is for 2-wheel drive models and only fits regular cab models but excludes the Raptor.
    view full answer...
  • Front Power Stabilizer Jacks Not Extending Or Retracting But Motor Is Working
    There are a few things that could be causing the issue with the front stabilizing jacks on your Keystone Springdale. Since you mentioned that starting to lower the jack manually allowed the electric motor to work it sounds like the battery for your trailer may be weak not allowing the jack to work properly. This is not an uncommon issue as raising a trailer requires quite a bit of power and it is definitely possible that the battery only has enough power to turn the motor but not...
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  • How To Prevent Rear End Sag on a 2018 Ford F-150 Raptor While Towing
    Yes, you can use a weight distribution system on your 2018 Ford F-150 Raptor. However, you will need to make sure the trailer hitch is rated for use with a weight distribution system. For one that is, I recommend the etrailer.com Trailer Hitch Receiver part # E98871 which is a direct fit so no drilling is required and it will exceed the weight limitations of your vehicle. For a weight distribution system, there are few better than the Equal-i-zer Weight Distribution System part # EQ37061ET...
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  • RAS3611-HD for 2017 Nissan Titan XD Trim Level S
    I would not recommend the part # RAS3611-HD for your 2017 Nissan Titan XD. This kit is designed for heavier duty vehicles so it would make your suspension harsh. The part # RAS3611 is the correct kit you'd want. It will give you the suspension support you want and won't make the ride harsh. The roller does have to be permanently removed though. I attached a picture that shows that step of the instructions for this kit. The roller has to be removed so that the spring of the RAS can lay...
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  • Best Suspension Help for Lifted 2004 Ford Super Duty Truck
    For your 4 inch lift on your 2004 Ford Super Duty truck, I recommend the Lift Spacers for Firestone Ride-Rite Air Helper Springs - Vehicles w/ 4" Lift # F2371 along with the Firestone Ride-Rite Air Helper Springs # F2550 if you have a suspension lift. If you have a body lift, then you can simply use the helper springs without the spacers. If you have a combination, let me know how much of each for a more customized fit. The air springs will allow you to adjust the psi in the springs...
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  • 2018 Ford Raptor Suspension Enhancement Recommendation
    We actually don't have air bag suspension enhancement that fits your 2018 Ford F-150 Raptor (couldn't find any other places that do either), but we do have adjustable suspension enhancement that will work really well for what you are wanting. For that you'd want the part # RAS3611 which gives you up to 2,000 of additional support, isn't harsh like some options are, improves handling, and is adjustable by changing the spring tension. This would definitely be your best option!
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  • Correct Roadmaster Active Suspension Kit for 2001 Ford F-350 Super Duty
    Yes, the correct Roadmaster Active Suspension Heavy Duty kit for your 2001 Ford F-350 Super Duty is part # RAS3611-HD, which fits single and dual rear wheel models regardless of cab size. Just note that if your truck has factory overload springs (located above the pack of leaf springs), they must first be removed before the kit can be installed The HD kit is best for trucks that typically experiences squat of +2-3 inches when loaded and/or trailer has a tongue weight of 600 lbs or more....
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  • Which Roadmaster Active Suspension Kit For a 2013 Ford F-150
    I can help you figure out which Roadmaster Active Suspension Kit will work best for your 2013 Ford F-150. Since you mentioned that you tow about 3500 miles a year I recommend the Roadmaster Active Suspension Custom Leaf Spring Enhancement Kit # RAS3611-Y which offers a 2000lb maximum capacity and will make for a more pleasant ride when you are not towing your travel trailer compared to the heavy duty option. If your truck is not 4WD you will need the Roadmaster Active Suspension Custom...
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  • Does TorkLift StableLoad Need to be Disconnected When Not Towing/Hauling with 2011 Ford F-150
    When you aren't towing or hauling I do recommend disconnecting the TorkLift StableLoad Rear Suspension Upgrade with Quick-Disconnects # TLA7310 on your 2011 Ford F-150 because leaving them engaged will cause your unloaded ride to be very rigid. The overload springs are basically designed to help keep your truck from bottoming out when there is an extremely heavy load in the bed, so if you keep them engaged it causes your suspension to become rigid, which is transferred over to your ride...
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  • Recommended Roadmaster Active Suspension On 2014 Ford F-150 For Travel Trailer w/Weight Distribution
    On your 2014 Ford F-150 STX, I recommend the Roadmaster Active Suspension Kit # RAS3611-Y if you have a 4WD truck or the # RAS3611 if you have a 2WD truck. This system easily installs over your leaf springs to improve the stability and control of your factory suspension. The mechanically active system eliminates porpoising caused by wheel hop. This adds critial strength (2,000 lb capacity) to your leaf springs without compromising ride quality. It instantly absorbs and disperses...
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Info for this part was:

Expert Research:
Mike L
Expert Research:
Michael H
Expert Research:
Jameson C
Video by:
Andrew K
Video Edited:
Jacob T
Test Fit:
Randy B
Written by:
Mary E
Updated by:
Sarah W
Updated by:
Isabelle B

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