Roadmaster Active Suspension Custom Leaf Spring Enhancement Kit

Item # RAS3612

(148 Reviews)

Our Price: $469.00

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Roadmaster Active Suspension Custom Leaf Spring Enhancement Kit Standard Duty RAS3612

RAS Leaf Springs Vehicle Suspension - RAS3612

Roadmaster Active Suspension Custom Leaf Spring Enhancement Kit Leaf Springs RAS3612

Vehicle Suspension RAS3612 - Standard Duty - RAS

RAS Rear Axle Suspension Enhancement - RAS3612

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Roadmaster Active Suspension Kit Review

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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 RAS3612 can be ordered online at etrailer.com or call 800-298-8924 for expert service.

RAS Vehicle Suspension - RAS3612

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.

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

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

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

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

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

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

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 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.

3612 RAS Custom Active Suspension System for OEM Leaf Springs - Rear Axle

Installation Details RAS3612 Installation instructions

This Product Fits The Following Vehicles

2003 - 2008 Ford F-150
2004 - 2004 Ford F-150 Heritage Series
2006 - 2008 Lincoln Mark LT
1975 - 1991 Ford Van E-100
1975 - 2007 Ford Van E-150
1975 - 2007 Ford Van E-250

Video of Roadmaster Active Suspension Custom Leaf Spring Enhancement Kit

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

Video review roadmaster active suspension kit ras3611

Roadmaster Active Suspension Kit Review

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 - RAS3612

Average Customer Rating: 4.7 out of 5 stars (148 Customer Reviews)

Order: 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.

- RAS3612

by: Tim J06/01/2020

I bought these after seeing them on television. My truck dropped in the back when towing a horse trailer. Ruined my front tires. These kept the truck level with the horse trailer attached and even improved the ride when there was no load. Raised the rear about two inches I think. I highly recommend them. 806341

- RAS3611

by: James03/02/2020

Review from a similar RAS in Vehicle Suspension

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-Y

by: Jim F06/26/2017

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

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by: Adam01/25/2020

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

5 Things to Know About Weight Distribution Hitches

- RAS3611-Y

by: Rick12/12/2018

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

by: Jim R11/27/2016

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: Richard07/11/2018

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

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- RAS3611-B

by: David T07/28/2017

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

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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: Peter03/08/2019

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

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- RAS4611

by: M D06/07/2018

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: Bill06/29/2018

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

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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: Christopher07/16/2018

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

- RAS3611

by: Richard08/18/2019

Review from a similar RAS in Vehicle Suspension

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

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- RAS4611TD

by: Jacob10/16/2019

Review from a similar RAS in Vehicle Suspension

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

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- RAS3611-B

by: Dave C10/17/2016

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: Dave S01/13/2020

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

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- RAS3611-Y

by: Charles02/17/2020

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

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- RAS3611-Y

by: AMS07/06/2018

Review from a similar RAS in Vehicle Suspension

Installed the Roadmaster auxiliary springs on a 2018 F150 Screw FX4 (max tow package; 7000 lbs rated payload capacity) because I've been unhappy with how much the rear squats when towing an enclosed car trailer (I use a weight distributing hitch), and a bit displeased with how the truck handles bumps, dips, etc. For whatever reason, Ford installed a weaker leaf spring pack on this truck / model (one fewer leaf spring than on earlier model I owned with a 7200 lbs payload capacity). In general, maybe because of the FX4 package, maybe because of the smaller wheels on this truck than my older F150 (18" vs. 20"), there is much more range of uncontrolled motion in this 2018, and much more bounce and jarring over uneven pavement. In my opinion, the rear leaf spring pack and shocks -- on this truck -- are not well matched. After considering air bags or an auxiliary leaf spring, I contacted Etrailer and chatted with a rep, who guided me to this Roadmaster unit. The rep was very helpful and took the time to discuss how I used my truck in order to determine the best option for me. Since I do not tow frequently (12-15 x per year), and my tongue wait varies between 600 - 700 lbs, the Roadmaster seemed to be a good middle-of-the road option over air bags, which require constant monitoring (not a big deal if you use your truck all the time). I wanted a "set it and forget it" option, and the Roadmaster was designed to be just that. The units installed very easily (I have access to a lift), the instructions are clear, and there's a very helpful video available on Etrailer's site. Most importantly, the ride smoothed out immediately as compared to stock. I set the units for the maximum payload increase rating (40%), which raised the rear end enough that the truck now looks a bit like a late '60s - 70s American muscle street rod (not a look I was trying to achieve), but the ride is far superior to stock. The truck no longer bounces, jars, or deflects to any significant degree, but the ride remains supple and smooth (I know, strange description for a truck). This is not to say that the stock ride quality was generally bad, but it certainly needed improvement for my tastes and needs. Unfortunately, I've not had the opportunity to tow with the auxiliary springs at the time of this review, but I am certainly optimistic that the ride height will now be level, and the ride quality improvements will be retained while towing. This is a good product, well made and supported, and Etrailer was a pleasure to work with. Very helpful sales representatives, fast shipping, and good customer support. 538434

- RAS3611-Y

by: Aaron01/06/2019

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

- RAS4611

by: Rick05/14/2018

Review from a similar RAS in Vehicle Suspension

ordered on tuesday arrived on friday Free shipping that was fast. Installed on Saturday morning. after I got the truck on the Jackstands took all if 20 minutes to install. haven't towed anything yet going camping this coming weekend will report more, truck rides better unloaded that before, great customer service 508437

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- RAS3611-Y

by: Travis06/06/2019

Review from a similar RAS in Vehicle Suspension

Excellent product as always from one of my favorite companies. The items (including this one are always as described. This provides leveling for my 2018 F150 while towing and makes a huge different. 654097

- RAS4611

by: Jim09/16/2018

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

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by: Randy H04/15/2019

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-Y

by: Doug D11/05/2016

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-Y

by: Charles06/24/2018

Review from a similar RAS in Vehicle Suspension

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

192

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Ask the Experts about this RAS Vehicle Suspension

Will the Roadmaster Active Suspension # RAS3612 Fit with Timbrens Installed on a 2001 Ford E-150 2WD
If you are wanting to add some additional support to the Timbren System, like part # TFER15087, for your 2001 Ford E-150 2WD then the Roadmaster Active Suspension # RAS3612 is a great option. It won't get in the way of your Timbren system and it doesn't require maintenance like an air bag system would. Should you end up wanting some front suspension enhancement then I recommend the SuperSprings SumoSprings. These have the same concept as the Timbrens but we have heard from customers...
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Best Suspension Support for 2008 Ford F-150
The RAS systems are the best options for suspension support. They give you adjustable suspension support that's easier to install, less maintenance, and unlike other options actually improves ride quality instead of diminishing it. So for your 2008 Ford F-150 you'd want the part # RAS3612 and you'd be set.
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Rear Suspension Enhancement for 2008 Ford F-150 to Reduce Suspension Sag When Towing
The amount of tongue weight you have at 965 lbs it probably higher than what your F-150 is rated to tow which is why you are experiencing sag even with a weight distribution system. Suspension enhancement can help give you more support but if you are above the weight capacity of your vehicle suspension enhancement would not be enough to allow you to safely tow beyond that. The SumoSprings kit part # SSR-108-40 would give you an additional 1,000 lbs of support when towing though and...
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