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RoadActive Suspension Custom Leaf Spring Enhancement Kit - Heavy Duty
RAS

RoadActive Suspension Custom Leaf Spring Enhancement Kit - Heavy Duty

Part Number: RAS3611-HD
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$589.00
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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. Great Prices for the best vehicle suspension from RAS. RoadActive Suspension Custom Leaf Spring Enhancement Kit - Heavy Duty part number RAS3611-HD can be ordered online at etrailer.com or call 1-800-940-8924 for expert service.
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RAS Vehicle Suspension - RAS3611-HD

  • Leaf Springs
  • Rear Axle Suspension Enhancement
  • RAS
  • Heavy 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
    • RoadActive Suspension will not increase your vehicle's weight-carrying capacity
  • 5-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

RoadActive Suspension (RAS) kits enhance those passive leaf springs by converting them into a mechanically active, all-in-one suspension system. RAS kits have variable-rated coil tension springs that automatically adjust to your heavy load. Other suspension systems only solve a few problems and usually at the expense of other improvements your factory leaf springs may need. RAS, on the other hand, is a unique kit that provides everything you want in a suspension system without any trade-offs. It eliminates bottoming out like air springs, reduces sway and body roll like sway bars, keeps your ride level like helper springs, and improves traction and braking control like traction bars. This improves your vehicle's stability, handling, and control while you are towing or hauling, as well as when your vehicle is unloaded. RAS also makes your overall driving and towing experience safer and more comfortable, which greatly lessens driver fatigue.


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



This Product Fits The Following Vehicles




Customer Satisfaction Score:


Customer Reviews

RoadActive Suspension Custom Leaf Spring Enhancement Kit - Heavy Duty - RAS3611-HD

Average Customer Rating:  4.7 out of 5 stars   (777 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.

by:
1999 Ford F-250 Super Duty

Installed this system on a 1999 F-250 SD. I pull a 35 foot 5th wheel trailer that has a pin weight of 2,180 lbs. (I know the exact weights as I have weighed each axle, unloaded and loaded.) Before the RAS install, the trailer would cause the rear of the truck to sag, pitching the nose up just a bit.
I installed the RAS system, and knowing my truck is loaded to the max, I decided to use the 2mm spacer. After the install, the height at the rear bumper was 2 1/4 inches higher. Before the RAS install, the trailer would cause the rear of the truck to drop a full 4 inches. With the 2mm spacer adjusted RAS, the trailer caused the truck to drop about 2 inches in the rear, but the rake of the truck now remains with the nose lower than the rear.
After the initial install, I drove the truck unloaded. The ride was about the same as before, maybe just a bit smoother, hard to say for sure.
This past weekend, we took the truck and trailer to Branson, MO and back, about a 825 mile round trip. What a difference! We hadn't driven 2 miles from home when the wife said, wow, this is a different truck. The ride was fantastic. It eliminated surging we would sometimes encounter on some roads. Bumps and undulations in the road were so much better.
I was really skeptical about this, especially considering the price. But you couldn't pay me to take it off now. I consider the RAS essential equipment now, right up there with EGT and boost gauges, 4" exhaust, diesel brake and added TPMS to all tires. I've been pulling that same 5th wheel for 22 years with that 25 year old truck, and this last weekend was the best pull I've ever experienced. Just wish I had had the RAS on the Alaska highway a few years ago. I am amazed at the improved ride. Couldn't recommend it any higher.

Nathan A. profile picture

Nathan A.

11/17/2024

After numerous trips with the 5th wheel over the past year, along with some fully loaded solo trips, my opinion of the RAS system remains the same Fantastic! I highly recommend the RAS system. Wish I had had it years ago.



by:
2022 Chevrolet Silverado 2500

Received these ahead of schedule and all intact. I watched the video on etrailer.com and youtube, very helpful.
The installation is not difficult if you are handy with tools. Aside from it deciding to rain on me during install it was not bad. Suggest you lay out all your tools and include a couple of adjustable wrenches. First off, unscrew that gold screw alot, when you think there is enough, go more, the first side I was short. I wiped down the truck springs to remove any dirt there and set up then tightened by hand, you can't go far that way but gets you started. On the rod with the 2 nuts that will lock together when done, I gave myself about 3" of thread and locked them together to hold the threaded rod while adjusting, no way to hold the end nut, this worked out well. The one thing I would have done different is the adjusting nut is 14mm, I only have a 6" ratcheting 14mm, doable but at the end it tough, I wish I had a 10" or so, there was space in my install. I set mine to high since I pull a 5th wheel so adjusting was the hard part.
I will not know until spring if this helps with the towing as the camper is now stored but very hopeful from others input. If anything changes I will update.

Gary profile picture

Gary

10/17/2024

These worked out very well, helped with stabilizing the 5th Wheel camper while pulling and did not cause a harsh ride while unloaded.



by:
2017 GMC Sierra 1500

Admitedly, I haven't even rolled my '07 Silverado 2500HD classic out of the garage yet, but I'm already very pleased. I had to go to a neighbor for a 10mm hex key socket and was slowed down by my 7yo kid 'helping', but it was still only 90 minutes my jack stands were in use. Easiest thing to do!
My only small downsides so far:
* needed to find a 10mm hex key that I apparently don't own, not sure why they picked that fastener
* wish I put some loc-tite on; just to make me feel better
* distance to drop the axle so the suspension fully hangs was way further than I expected; barely had my jack stands tall enough to get the job done.

These aren't really bad on the product, just notes for future customers. We're towing the 5er about an hour an a half this coming week, hopefully it steadies up a lot!

Keith profile picture

Keith

8/27/2023

Its been really wonderful. 10k 5er on my 07 2500hd classic ccsb and I can definitely notice an improvement in handling, including less porpoising. Towed it a couple times since, including a 7 hour drive. Very happy. I recently replaced the old wornout front bumpstops with sumo springs monsters and saw additional improvement. Neither hurts the unloaded ride, just better all around!



by:

I had the airbags in the back for years. These far out way them. This is the best thing I ever did!!

Ron profile picture

Ron

11/9/2024

They are still working great. Would do it again or sooner if I had known about them.



by:
Nissan Leaf

Definitely stiffens up the leaf spring suspension not impacting the ride. Just feels like a lot more support.

Josh profile picture

Josh

7/27/2024

Sold that truck



by:
2021 Nissan Titan

Works great at leveling my truck with my travel trailer.



by:

Definitely work as advertised. Only thing I would note is at the 2mm adjustment there is a slightly firmer ride. But barely noticeable.

Scott E. profile picture

Scott E.

7/22/2024

The RAS definitely has worked to make the ride of my truck better with a heavy load. Way less nerve racking in the wind and on curves. I did some adjustment to try to take some more squat out of it with advice from tech support. That really didnt do much. I have a new and heavier trailer coming at the end of the week, so now I’m adding Timbrens too.

JamesonC profile picture
Etrailer Expert

Jameson C.

7/22/2024

@ScottE I would be careful adding the Timbrens. They are notoriously pretty harsh and they aren't adjustable. I had a coworker who has both the RAS and a Timbren and he hated the Timbren as it was super harsh.


by:

Total transformation! I never knew how bad my ride was until I installed these RoadMaster 3611-HD active suspension. It took longer to safely jack my truck up and remove tires than it was to install them! Absolutely a game changer. I carry about 1000 lbs of tools and supplies daily and like riding a Rollercoaster when hitting bumps. Now, i hit bumps on purpose just to feel these RoadMasters work their magic! Love them!

Tracey T. profile picture

Tracey T.

4/29/2022

After a year of use , these RoadMaster 3611-HD active suspensions are still the best addition to my trucks performance. The streets of Houston are brutal and these active suspension breeze through them. I have 354000 on this truck and if I ever get another, this Active Suspension will be the first addition. Hands down!



by:
2023 Chevrolet Silverado 1500

Love this product. I ordered a set for myself just before Christmas and I was so impressed that I ordered another set for my son’s truck. I was kind of worried that it would raise rear end too much but that wasn’t the case at all. If it raised it at all, it wasn’t noticeable. Definite improvement in handling bumps, cornering, and it eliminated any squat due to my pin weight of the 5th wheel. Highly recommend for an easy install (45 minutes) and overall ride improvement.



by:
GMC

These made a significant difference n reducing rear sag on my 2021 GMC 2500HD when loaded for camping and towing travel trailer



by:

Definitely helped reduce trailer sway and tongue weight pressure from our RV. Would highly recommend!



by:

This suspension enhancement was worth every penny. Easy install, reduced some squat and absolutely added stability. I was amazed at the difference they made when hauling my slide in camper.



by:
Chevrolet Silverado

I tow a 7500 lb Airstream with a Chevy Silverado 2500HD. Prior to installing the RAS, I had an issue with porpoising. That was no longer a problem after I installed the RAS. Porpoising was dampened and controlled with RAS.



by:
2010 Nissan Leaf

Silverado 2500HD
Ready to install out
of the box. Simply extend the RAS out to become the proper length (shortened for shipping), remove the bolt to allow the fork to drop over the leaf spring and reconnect, hand tighten the assembly via turning the spring and check the "centered alignment", then tighten with a wrench (my socket wouldn't quite fit) until gap disc slips freely between the expanded spring. Took me longer to prep truck on a jack and two axle stands/remove tires for improved accessibility than the actual RAS installations.

Added 1 inch of lift "empty weight". Will see how much squat is removed under load of our travel trailer this weekend!

I'm not very mechanically inclined, and found this very easy to self-install - a level 1 project.

NOTE: etrailer customer service also took their time w/ me over the phone to ensure I had ordered the proper kit for my vehicle, and although my order was sent to the vendor for direct shipment, I got it to Alaska in less than 10 days.



by:
Ram 2500

We installed these on a 2500 box van that is weighted with tools 100% of the time. The RAS helped to reduce "side to side" sway and stiffened the suspension as advertised.



by:

Installed for nearly 6 months now. I love this suspension! I needed something to give my '18 Titan some heft in the back end when pulling our 24' RV trailer but didn't want to deal with any of the air options out there. After reading the directions twice, I installed both sides before the AC/DC album was finished playing, so it's super fast and easy. I set them on 25% tension and really like how they drastically reduce porpoising during our RV drives. Well worth the cost.



by:
Chevrolet Silverado

Can't say enough good about the RAS, put it on my Silverado 2500HD with a Spacekap Diablo on back, the RAS brought the ride back to same as stock. Even with a top heavy load there is no more sway than stock and it brought the ride height back to stock. Love the RAS.



by:

I love the RAS. I will say that I took my airbags off and there’s definitely a difference in stability, but the difference in ride comfort far outweighs it. I also have yet to adjust them up a little bit to try that I just set them at the factory recommended setting and did not max them out or anything. Really love them very easy to put on Literally takes a few minutes. The powder coating and everything is exceptional. Highly recommend.



by:

This is my 2nd set of RAS! Just purchased for towing in my D-Max 2500HD. 1st set we’re on a Chevy 1500. I tow a 7000lb 259FKDS Freedom Express bumper pull and having the RAS-HD’s installed is night and day difference in towing. I have them set at 40% because of my cargo in the truck bed and tongue weight. I’m set up right now as I type on a 100 mile camping trip to set the springs and readjust if needed! So I say….”if you need support with towing, give RAS3611-HD a try…you won’t be disappointed with the results”



by:

Added to help when towing my 26' enclosed trailer. Made balancing trailer load easier. No sag. Almost as if trailer lost weight..



by:
2018 Chevrolet Silverado 2500

very well built, installed in about an hour and a half (including jacking up and wheel removal and install time). Set at 40% it raised the truck bed exactly 1". Did not notice much difference in how the truck rides empty, which is a big plus for me. Can't wait to hook the 5th wheel up to see the difference.



by:
2015 Chevrolet Silverado 2500

So I may have a unique situation that provides almost a perfect analysis of the benefits of the RAS Custom Leaf Spring kit. My friend and I bought the exact same fifth-wheel camper on the same date. We have very similar Chevy trucks and the only real difference is that I have the RAS kit and he doesn't. We drove, one behind the other, from his home to the campground. He complained about the bounce experienced after road bumps but I never experienced that. We switched and drove each others' vehicles for about 100 miles and he was very surprised at the smooth ride he had in my vehicle. We are confident that the only difference was the RAS kit.
GREAT product



by:
2007 GMC Sierra Classic

Install was very easy. Worked as advertised. 2007 GMC 2500HD (WT), 8'f bed, extended cab. First trip light/unloaded I noticed an immediate improvement in ride and handling. Next up - Trip with the travel trailer. We'll see how they hold up.



by:

Easy install, haven't put it to the test yet, but seems to be a very high quality system.



by:

I just opened the box and the two enhancement springs look great. Can't wait to install them.


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See what our Experts say about this RAS Vehicle Suspension

  • Recommended RAS for a 2020 Chevy Silverado 2500 Towing a 5th Wheel Trailer
    Thanks for the picture! I would definitely go with one of the HD kits over the 2,000 lbs RoadActive item # RAS3611 you were looking at. Which one you will need is going to depend on whether or not your 2020 Chevy Silverado 2500HD has the factory overload spring. I have attached a picture below that shows what you need to check for. This picture shows a Chevy Silverado with an overload spring. Without Overload Spring - RoadActive Suspension Custom Leaf Spring Enhancement Kit item # RAS3611-HD With...
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    Image 1 for Image 2 for
  • Recommended RoadActive Suspension Kit For a 2020 Nissan Titan 4WD
    For your 2020 Nissan Titan 4WD crew cab, I recommend the RoadActive Suspension Custom Leaf Spring Enhancement Kit item # RAS3611 which offers a 2000 lbs maximum capacity and will make for a more pleasant ride when you are not towing your travel trailer compared to the heavy duty option item # RAS3611-HD. If you are loading the bed of your truck to capacity and plan on towing often then the RoadActive Suspension Custom Leaf Spring Enhancement Kit - Heavy Duty item # RAS3611-HD would be...
    view full answer...
  • Will Air Lift 7500XL Air Spring Fit With RoadActive Suspension On a 2007 Silverado 3500 Classic?
    Yes, the Air Lift LoadLifter 7500 XL Ultimate Air Helper Springs # AL57575 are going to be compatible with the RoadActive Suspension # RAS3611-HD. Both of these mount to different parts of your 2007 Chevrolet Silverado 3500 classic so they will not interfere with each other. I do recommend installing the Air Lift WirelessAIR Compressor System # AL58WQ to adjust the air pressure in the air springs. I prefer this system as it has a smart manifold which allows you to easily control the air...
    view full answer...
  • Differences Between The RoadActive Suspension Systems For A 2023 GMC Sierra 2500
    We currently have three different RAS kits available for your 2023 GMC Sierra 2500. Which kit you will need depends on the leaf springs that you have under your Sierra and the amount of sag that your are experiencing. After installing any of the three RAS systems that I explain below will not increase the payload or towing capacity on your Sierra, but they will provide assistance for your factory suspension giving them a more level and safe ride. The first kit that we offer is the RAS...
    view full answer...
  • Suspension Enhancement Recommendation for 2010 Ford F-250
    The best suspension enhancement option we have for your 2010 Ford F-250 CC is the Roadactive kits. Which for that you'd want the part # RAS3611-HD if you do not have overload springs or # RAS3611-LHD if you do have them. The RAS kits provide the best support, ride quality, ease of install, and are adjustable so they are the way to go.
    view full answer...
  • Recommended Camper Tie-Downs For A 1997 Ford F-250
    Hey David, I haven't really heard from anyone saying their truck bed camper couldn't clear the cab, but vehicle manufacturers can make some wild changes after a couple of decades. With your truck being only a few years newer than the camper I'd say you're likely fine because the camper manufacturers would be going off industry standards for trucks at that time. The camper is going to be sitting inside the bed so you can just ask the seller for the measurement from the bottom of the camper...
    view full answer...
  • How Can I Reduce Bouncing On A Bumper Pull Trailer
    There are a few things that can cause bounce with a bumper pull trailer. Generally, bias ply tires would not contribute to trailer bounce, unless they are excessively worn. Trailer bounce is can be caused by worn out suspension components. You will want to get under the trailer and give everything a good look-over. You will want to check and make sure the trailer is completely level when towing. If all of that checks out, it may be the case that you are just not towing enough weight...
    view full answer...
  • Suspension Enhancement Recommendation for 2000 Chevy K2500
    We have really great suspension enhancement kits that do fit your 2000 Chevy K2500 but none of the air bag kits are a fit with the in-bed hitch you have since the brackets mount on the same part of the frame. What I would recommend instead is a RoadActive Suspension kit like the part # RAS3611-CHD for if you have factory overload springs or part # RAS3611-HD for if you do not have the overload springs. The RAS kits over adjustable support that is easier to install, easier to adjust, is...
    view full answer...
  • Recommended RoadActive Suspension Kit For a 2023 Nissan Titan XD For 5TH Wheel Towing
    I recommend going with the standard RoadActive Suspension # RAS3611 on your 2023 Nissan Titan XD. This system is rated for up to 2,000lbs capacity which far exceeds the 1,300lbs from your 5th wheel. The HD Kit # RAS3611-HD being rated for 3,000lb capacity is more than you will need and will lead to a slightly stiffer ride. I only recommend the HD kit is situations where you are always towing or hauling additional weight in the bed. We do show both these kits as compatible with your 2023...
    view full answer...
  • RoadActive Suspension or Timbrens For 2011 Chevy Silverado 2500HD Towing 12k 5th Wheel
    Hi Randy, Between the Timbrens and the RAS, easily the best choice is the RoadActive suspension, though keep in mind there are a couple different fits for your 2011 Chevy Silverado 2500 depending on if you have overload springs or not: - WITH Overload Springs: RoadActive Suspension Custom Leaf Spring Enhancement Kit # RAS3611-CHD - WITHOUT Overload Springs: RoadActive Suspension Custom Leaf Spring Enhancement Kit # RAS3611-HD The reason I like the RAS kit more than the Timbrens is because...
    view full answer...
  • Difference Between RoadActive Suspension Kits For A 2022 Chevrolet Silverado 2500
    When installing The RoadActive Suspension Kit on your 2022 Chevrolet Silverado 2500 the difference between the HD and the CHD is that the # RAS3611-CHD fits vehicles with overload springs whereas the # RAS3611-HD fits versions without the overload springs. For even better sway reduction and handling improvements, you can use the Roadmaster Rear Anti-Sway Bar # RM25FR with either kit mentioned above. If you have any further questions please feel free to reach back out to me anytime and...
    view full answer...
  • Suspension Enhancement Options For A Lifted 2006 Ford F-350 Pulling A 10,000 lb Trailer
    Hello Stephen, thanks for reaching out. The RoadActive Suspension Custom Leaf Spring Enhancement Kit # RAS3611-HD will certainly help with your sway issues. It will help to level your ride which will in turn improve handling and reduce sway. I see that you also ordered the Timbren Rear Suspension Enhancement System # TFR350SDF which is also a good choice. These will add quite a bit of additional support when you are hauling your trailer. They will also reduce sagging and help with stability...
    view full answer...
  • RAS Suspension Upgrade For A 2022 GMC Sierra 2500 AT4
    Hello Stan. The # RAS3611-HD is the correct kit for the 2022 GMC Sierra 3500. I do not see an order from you so I am not sure exactly what kit you ordered, but the # RAS3611-HD will be the correct fit. I have linked an installation video for you below showing a similar RAS kit installed on a 2016 Chevy. So, not the same truck but it should still give you a really good idea of the installation process. If you have any other install questions just let me know in the comments below. The more...
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  • Is the RoadActive Suspension Custom Leaf Spring Enhancement Kit Compatible w/ Bump Stops?
    Yes, they are. The RoadActive Suspension Custom Leaf Spring Enhancement Kit item # RAS3611-HD you were looking at, is confirmed to fit a 2018 Chevrolet Silverado 2500 and are compatible with bump stops.
    view full answer...
  • Suspension Enhancement to Reduce Bounce On a 2015 GMC Sierra With Air Lift Air Helper Springs
    The best way to reduce the bouncing you are experiencing in your 2015 GMC Sierra 2500 with the Air Lift LoadLifter 5000 Air Helper Springs # AL57338 is by changing out the air springs. By installing 2 of the Replacement Air Springs # AL84297 with the internal jounce bumper this will reduce the bouncing. The jounce bumper helps to absorb the bouncing you are experiencing and will effectively upgrade you to the Air Lift LoadLifter 5000 Ultimate Air Helper Springs # AL88338. The RoadActive...
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  • Selecting The Correct RAS RoadActive Suspension For a 2019 Nissan Titan
    There are actually 3 RoadActive Suspension Custom Leaf Spring Enhancement Kits available for your 2019 Nissan Titan. The only difference in all 3 kits is the weight capacity for the coil springs. 2,000LB Capacity # RAS3611 3,000LB Capacity # RAS3611-HD 4,000LB Capacity # RAS4611 If your 6,000lb travel trailer is the largest amount of weight you will pull with your 2019 Nissan Titan then the 2,000LB Kit # RAS3611 will work the best. If you also plan on filling your bed with gear and/or...
    view full answer...
  • Difference Between RoadActive Suspension Kits for 2024 GMC Sierra 2500
    The main difference between the # RAS3611 and # RAS3611-HD is the capacity. The regular system has a 2,000 lb weight capacity while the HD system is 3,000 lbs. I would choose the HD system for the additional support. The lowest tension setting on the HD is the same as the highest for the regular RAS and then you can adjust it further if you are towing/hauling really heavy loads.
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  • Recommended Suspension Enhancement For 2022 Ford F-150 With Curt 5th Wheel Base Rails
    Great photos, thank you, and while we do have a suspension enhancement option for your 2022 Ford F-150, you are correct the Ride-Rite # F2582 won't work because they use the same mounting holes as the Curt Custom Fifth Wheel Installation Kit # C93WR. I then took a look at the Air Lift # AL47PD, but the issue there is they use U-bolts that go over the frame to mount, and the Curt brackets have the pronounced hump right where they would go. So instead, of air bags, I highly recommend the...
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  • What Setting for RAS HD Installed on 2023 Chevrolet Silverado 2500
    We have no way of really knowing how much it will squat exactly since there are too many factors. It will also depend on the shape your suspension is currently in. Since it is a 2023 Silverado 2500 I would expect it to be in good shape unless you really put it to work this last year but that is just one of the possible variables. Regardless, I would go ahead and start with the highest setting on the # RAS3611-HD. This will do the best job keeping you level with the 5th wheel hitch in and...
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  • Correct RoadActive Suspension Custom Leaf Spring Enhancement Kit for a 2022 GMC Sierra 2500
    The correct RoadActive Suspension Custom Leaf Spring Enhancement Kit for a 2022 GMC Sierra 2500 is part # RAS3611-CHD for models with top overload springs or part # RAS3611-HD for models without. Please note, the 1500 and 2500 models feature much different suspension so you can't transfer parts.
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  • Difference In Ride Quality Between RAS and Heavy Duty RAS on 2022 Chevrolet Silverado 2500
    When it comes to comparing the ride quality between the RoadActive Suspension Custom Leaf Spring Enhancement Kit # RAS3611 and RoadActive Suspension Custom Leaf Spring Enhancement Kit - Heavy Duty # RAS3611-HD it is likely you won't notice much of a difference at all. Since the RAS system is adjustable, you can always make changes if you think the ride is a little stiff. It is likely you won't need to though. For that reason, I would choose the # RAS3611-HD for the extra capacity and...
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  • Best Suspension Enhancement Recommendatio for 2004 Ford F-350 Dually with Camper Shell
    The best suspension enhancement kit for your 2004 Ford F-350 dually for your application is the RoadActive Suspension kit part # RAS3611-HD as it gives you the support you are wanting, is easy to install, and unlike other options (including two you mentioned) that hurt the ride quality this actually improves the ride quality and stability.
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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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  • Determining If RAS Leaf Spring Enhancement Kit RAS3611-HD Will Fit 2007 Chevy 2500HD Classic
    The RoadActive Suspension Custom Leaf Spring Enhancement Kit - Heavy Duty # RAS3611-HD you were looking at is confirmed to fit your 2007 Chevrolet Silverado 2500HD as long as it does NOT have the top overload springs. If your truck does have the top overload springs you will need to go with the # RAS3611-CHD instead. Both options have the same 3000lb load capacity which will do a great job of preventing sag when towing a trailer or carrying a heavy payload, but will also eliminate axle...
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Info for this part was:

Employee Michael H
Expert Research:
Michael H
Employee Jameson C
Expert Research:
Jameson C
Employee Chris R
Video Edited:
Chris R
Employee Mary K
Written by:
Mary K
Employee Wilson B
Updated by:
Wilson B
Employee Noah M
Updated by:
Noah M
Employee Adam E
Installed by:
Adam E

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