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  1. Vehicle Suspension
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  4. Rear Axle Suspension Enhancement
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RoadActive Suspension Custom Leaf Spring Enhancement Kit - Heavy Duty

RoadActive Suspension Custom Leaf Spring Enhancement Kit - Heavy Duty

Item # RAS3611-HD
Our Price: $589.00
Vehicle Suspension

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Shipping Weight: 30 lbs
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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 or call 1-800-940-8924 for expert service.
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RAS Vehicle Suspension - RAS3611-HD

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

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.


  • 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


  • 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   (717 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.

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!



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!

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.


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.


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!

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.

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.

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.

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.


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.


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

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.


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”

2022 Chevrolet Silverado 2500

Received these ahead of schedule and all intact. I watched the video on 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.


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


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


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.

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.


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


I put these on my 2019 Silverado 2500 after i took an RV trip with a 35ft bumper pull travel trailer. I was bouncing around way too much for my liking. after i put these on, i went on a trip out west with a 32ft bumper pull travel trailer and what a difference. No more bounce! The sagging in the back was greatly reduced as well. i didn't notice much of a difference in the feel when I'm driving empty as well. these were pretty easy to install (another plus which saved money) and i trailer a deck over flatbed with logs on it and it really help with that too. highly recommend over airbags, which are nice but more expensive, more difficult to install, and a rough ride when you don't have a load (unless you deflate them)


Just like most of the other reviews... better ride both loaded and unloaded.
I was going to have a shop put new, OEM springs on my 34 year old F250. I'm so glad I didn't.
I adjusted them to give me 35-40% more capacity. Truck rides so much better, no more sway.

Nissan Leaf

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


The product came quickly and it was the right product no problem there.


This solved my “porpoising” issue when towing 5000 lb trailer with 3/4 ton truck.

2022 Chevrolet Silverado 2500

Would have liked to of gotten it sooner nevertheless I understand that these things happen but your guys is service is always outstanding And you’re always there for all the questions that I have and everything I purchased from you through the years thank you



Great 10 out of 10


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


I bought this product after reading all the other positive reviews. Currently have it on the low setting and my truck height is exactly the same as it was before install under loaded conditions. Unloaded it has raised the back end slightly which I think helps with the overall look of the truck. The ride has improved and the stability has as well. Feel a lot more confident towing now. So far, great product and very satisfied with my purchase.

Show More Reviews

See what our Experts say about this RAS Vehicle Suspension

  • 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...
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  • What Suspension Enhancement do You Recommend for My 2021 Chevy Silverado 1500?
    If you are planning on hauling heavy loads often, I recommend leaf spring enhancements like the RoadActive Suspension Custom Leaf Spring Enhancement Kit # RAS3611 (2,000 pounds) or # RAS3611-HD (3,000 pounds). Unlike springs or air bags, the leaf spring enhancement kit will influence the longevity of your current leaf springs as well as give you the load support you need to improve ride quality and prevent sagging. Also, you get the benefit of this being a maintenance-free system after...
    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.
    view full answer...
  • Correct RoadActive Suspension Kit for 2001 Ford F-350 Super Duty
    Yes, the correct RoadActive 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. It features...
    view full answer...
  • RoadActive Suspension Kit for 2002 Ford F-250/350
    The correct RoadActive 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 though...
    view full answer...
  • 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...
    view full answer...
    Image 1 for
  • 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...
    view full answer...
  • Choosing Between Standard and HD RAS for 2023 Chevy Silverado 2500 High Country
    The RoadActive Suspension won't have as much of an impact on your unloaded ride quality as it will when towing the trailer, especially on a brand new truck with a new suspension system. However, it will make a difference, more so as your suspension wears out over time. It will also help prevent that wear, extending the life of those components and your tires. I would choose the HD # RAS3611-HD over the standard # RAS3611. The HD at the lowest setting is the same as the standard at the...
    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...
  • 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...
  • What Are Different Sets of Holes for on RoadActive Suspension for 2022 Chevy Silverado 3500
    In order to get more tension using the RoadActive Suspension Custom Leaf Spring Enhancement Kit part # RAS3611 you'll need to expand the spring using the method outline in the instruction link below. The different holes on the axle brackets won't accomplish this, they are simply there for different applications. Please note, if you have maxed out tension then you may need to upgrade to the heavy duty version part # RAS3611-HD.
    view full answer...
  • Recommended RoadActive 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...
  • Will the RoadActive Suspension Kit Part # RAS3611 Increase Payload Capacity
    No, the RoadActive 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. If the pin...
    view full answer...
  • What Can I Use to Reduce the Sag on My 2020 GMC Sierra 2500HD with a 42 Fifth Wheel Trailer?
    The best product to use to prevent sagging on your 2020 GMC Sierra HD while pulling a 42' fifth-wheel trailer is the RoadActive Suspension Custom Leaf Spring Enhancement Kit # RAS3611 (2,000 pound weight capacity) or the # RAS3611-HD (3,000 pound weight capacity). The reason why these are the best is because they will help your truck's sag, improve it's handling, won't negatively affect your unloaded ride, is simple to install relative to other options, and requires no maintenance whatsoever. In...
    view full answer...
  • Difference Between RoadActive Kits for 2024 GMC Sierra 2500
    I would be happy to explain the differences. The RoadActive Suspension Kit # RAS3611 has the standard capacity of 2,000 lbs. The # RAS3611-HD and # RAS3611-CHD have a 3,000 lb capacity since they are the heavy duty versions. The # RAS3611-HD is designed for vehicles without top overload springs and the # RAS3611-CHD is for vehicles with factory top overload springs. I would choose the heavy duty version for your 2024 Sierra 2500. The RAS is adjustable with the standard model having 2 adjustment...
    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...
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  • Selecting The Correct RoadActive Suspension System For a 2024 GMC Sierra 2500
    First you will need to determine if you have an upper or lower overload spring on the leaf springs for your 2024 GMC Sierra 2500. If you have a top overload spring you will need the Kit # RAS3611-CHD. Otherwise we have the 2,000LB # RAS3611 or 3,000LB # RAS3611-HD for trucks with lower overload springs. For selecting the correct weight rating I recommend using the 2,000lb kit for occasional loads and the 3,000lb kit if your truck constantly carries heavy weights.
    view full answer...
  • Recommended RoadActive Suspension Kit For A 2022 GMC Sierra 2500 With An In Bed Camper
    Though it will ultimately depend on how much your camper weighs and how much sag you experience, there are a few differences between the 3 options available for your truck. First is the # RAS3611. This will have a 2,000 pound weight capacity and will be used in mild to moderate cases of sagging. With you having a Sierra 2500, I assume you will have a pretty heavy camper in the bed, so this may not be the best option. With that said, we come to the # RAS3611-HD and # RAS3611-CHD. These...
    view full answer...
  • 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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  • Comparing RoadActive Suspension Kits for a 2024 GMC Sierra 2500 4WD
    The difference between the RoadActive Suspension kits that fit your 2024 GMC Sierra 2500 have to do with the weight capacity and whether or not your vehicle has the factory top overload springs: - 2K # RAS3611 - 3K # RAS3611-CHD (with top overload springs) - 3K # RAS3611-HD (without top overload springs) If you can go with the higher weight rating I recommend doing so, otherwise you can just use the 2K kit and you'll be just fine.
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  • Recommended Suspension Enhancement for 2022 Chevrolet Silverado 2500 Towing a Horse Trailer
    The RoadActive Suspension Custom Leaf Spring Enhancement Kit will be a great choice for your 2022 Chevrolet Silverado 2500. Since you're going to be towing a heavy horse trailer, I recommend using the heavy duty kit # RAS3611-HD instead of the the # RAS3611. The RAS system turns your vehicle's factory leaf springs into a mechanically active suspension system. Not only will this improve stability and control, it will also help prolong the life of your leaf springs, shocks and tires. This...
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  • Differences Between the RoadActive Suspension Systems For a 2022 GMC Sierra 2500
    There are currently 3 kits available for your 2022 GMC Sierra 2500. The correct kit will depend on the leaf springs under your Sierra and the amount of sag you are experiencing. Do note that none of these systems will increase your payload or towing capacity. They will only provide assistance to your factory suspension giving you a more level and safe ride. The first kit is the RAS System # RAS3611. This system is rated for a capacity of 2,000lbs and works best with trucks that squat...
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  • Will Air Bags Work On a 1997 Ford F-350 with 5th Wheel/Gooseneck Brackets
    I do have an option for you but you can't use air bags on a 1997 Ford F-350 with fifth wheel or gooseneck hitch brackets, they both mount in the same spot. Instead, I recommend RoadActive Suspension Custom Leaf Spring Enhancement Kit part # RAS3611-HD which are bolt-on and they can be adjusted for any given load. They don't require maintenance like air bags but the adjustment process is not as easy albeit.
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  • RoadActive Suspension Over Sumo Springs for a 2018 Chevy Silverado 2500
    For your 2018 Chevy Silverado 2500 I would go with the RoadActive Suspension Custom Leaf Spring Enhancement Kit - Heavy Duty item # RAS3611-HD over Sumo Springs. The RAS system has a 3,000 lbs weight capacity that will level out your rear end. The best part about the RAS system is that it can be disengaged when you're not towing, allowing your leaf springs to perform as intended. Sumo Springs do not have this feature and can often times provide a stiff ride when you are not towing.
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