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  1. Trailer Leaf Spring Suspension
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Roadmaster Comfort Ride Shock Absorbers for Tandem Axle Trailers - 8,000-lb Axle

Roadmaster Comfort Ride Shock Absorbers for Tandem Axle Trailers - 8,000-lb Axle

Item # RM-2470
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Retail:$627.94
Our Price: $550.00
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Trailer Leaf Spring Suspension
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Shipping Weight: 55 lbs
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Improve your towing experience with this shock absorbing upgrade kit for leaf spring trailer suspensions. Heavy-duty shocks reduce trailer bounce, chucking, and porpoising. Adjustable mounting brackets and hardware included. Fits 3-1/2" axles. Lowest Prices for the best trailer leaf spring suspension from Roadmaster. Roadmaster Comfort Ride Shock Absorbers for Tandem Axle Trailers - 8,000-lb Axle part number RM-2470 can be ordered online at etrailer.com or call 800-298-1624 for expert service.
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  • Reviews (86)
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Roadmaster Trailer Leaf Spring Suspension - RM-2470

  • Suspension Kits
  • Shock Absorbers
  • 8000 lbs
  • Tandem Axle
  • Shocks
  • Roadmaster

Improve your towing experience with this shock absorbing upgrade kit for leaf spring trailer suspensions. Heavy-duty shocks reduce trailer bounce, chucking, and porpoising. Adjustable mounting brackets and hardware included. Fits 3-1/2" axles.


Features:

  • Heavy-duty gas shocks absorb road vibration to provide a more comfortable towing experience
    • Nitrogen-charged shock absorbers help to eliminate trailer bouncing, chucking, and porpoising
  • Adjustable mounting brackets allow the shocks to be positioned nearly vertically
    • Limits up-and-down motion of trailer on both compression and rebound
  • Shocks sit at an outward, 15-degree angle
    • Helps to control trailer sway by limiting lateral movement
    • Improves front-to-back, side-to-side, and up-and-down movement of your trailer
  • Bolt-on installation
    • Included tie plates with extension pieces replace your existing U-bolt plates
    • Upper brackets mount on trailer frame with included hardware
    • Shocks attach to tie plate extensions and to upper brackets to help dampen movement of axle


Specs:

  • Application: tandem-axle trailers with leaf spring suspensions
    • Axle size: 3-1/2" diameter (typical 8,000-lb axle)
  • Shock length:
    • Extended: 17-1/2"
    • Compressed: 11-1/2"
  • Quantity: 4 shocks
  • Limited Lifetime Warranty


This Comfort Ride suspension upgrade system greatly improves your towing experience. It serves as an add-on for your leaf spring suspension, and it provides a notably smoother ride, reducing chucking, axle roll-up, and suspension rebound. This means that you'll experience improved handling, even over potholes and uneven pavement. And the contents of your trailer will stay in place during travel.


Gas Shocks Absorb Road Vibration

While traditional leaf springs support your trailer to prevent bottoming out, they don't necessarily provide a comfortable ride. Due to the rigidity of the steel construction, leaf springs do a poor job of absorbing shock and bounce and limiting sway.


Roadmaster Comfort Ride shocks

Adding these shocks to your existing leaf spring suspension offers a better solution. Gas-powered springs inside of the sealed cylinders compress and extend as you drive. The compression and extension of the springs creates enough force to offset the amount of incoming force or vibration that occurs when you tow over rough or uneven terrain. The result is a more comfortable towing experience.


Comfort Ride Shock Absorbers installed

Typically, when shocks are installed on a trailer, they're positioned at a more horizontal angle. But this positioning doesn't compensate very well for the up-and-down movement of the trailer's suspension. However, Roadmaster's patented adjustable frame brackets are specifically designed to allow these shocks to be mounted at a nearly vertical angle. As a result, these shocks will have the leverage necessary to limit up-and-down motion during both compression and rebound.


Rigorous Testing Standards

The Comfort Ride shock absorber system has endured rigorous testing to ensure its durability and longevity. This testing includes computerized Finite Element Analysis, which establishes guidelines to ensure superior product quality and safety. Roadmaster also tested these shock absorbers at the Navistar Proving Grounds, a private test facility that provides real-world handling and safety testing. The result is a safe, long-lasting product that you can trust.


Installation

Installation of the Comfort Ride system is fairly straightforward.


The included tie plates replace your existing U-bolt tie plates. You will need to retain your existing U-bolts and nuts for installation. Once the tie plates are installed, bolt the upper mounting brackets to your trailer's frame with the included hardware. Some drilling is required when mounting the brackets to the frame. Finally, attach the shocks between the tie plates and the frame brackets.



2470 Roadmaster Comfort Ride Shock Absorbers - 3.5" Axles

Installation Details RM-2470 Installation instructionsAlternate Instructions RM-2470 Installation instructions




Customer Reviews

Roadmaster Comfort Ride Shock Absorbers for Tandem Axle Trailers - 8,000-lb Axle - RM-2470

Average Customer Rating:  4.8 out of 5 stars   (86 Customer Reviews)

Improve your towing experience with this shock absorbing upgrade kit for leaf spring trailer suspensions. Heavy-duty shocks reduce trailer bounce, chucking, and porpoising. Adjustable mounting brackets and hardware included. Fits 3-1/2" axles.

- RM-2470
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Thank you for the extra fast service service. Its always a pleasure to do business with you



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- RM-2470
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- RM-2470
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- RM-2460
by:

Review from a similar Comfort Ride in Trailer Leaf Spring Suspension


Along with the new springs....everything works as advertised. Well satisfied. No complaints. I had to modify the one set of shock brackets to fit, as I have raised the trailer 5 inches to match up with the 4 inch raised truck. Otherwise...no swaying....no bouncing........no problems. Thanks etrailer for your help.


Comments
Great. On a 32 ft. WildCat fifth wheel..No problems. In the driveway, I installed the Shock system, heavier springs. I had to modify the shock-to-frame brackets, as the trailer has been raised 5 inches. Along with the MorRyde Stabilizers the trailer tows like a dream. Be sure to have the wet bolt grease nipples pointing out to the side of the unit for easier access. Next project will be to replace the scary Magnetic Brakes with a hydraulic system. Thanks etrailer. Kudos to your wonderful support crew. It was just like calling my buddy next door.
Delta D - 08/02/2021


- RM-2460-2570
by:

Review from a similar Comfort Ride in Trailer Leaf Spring Suspension


OMG! After having the trailer bottom out on the stock springs while traversing a RR crossing, this system has proven to be amazing. Returning from a VA campground I crossed multiple RR crossings and traveled some rough pavement. I found I had left a bottle of shower soap on the ledge in the shower! It was still there when I set up in my yard. Not possible with the stock suspension!


Comments
This was the best thing I could have done to make the 5th wheel experience a good one. Prior to installing failing to properly secure things in the trailer would not end well. After the install, items remained where they were last placed.
Bruce H - 04/11/2021


- RM-2460
by:

Review from a similar Comfort Ride in Trailer Leaf Spring Suspension


I've installed this on a 5th wheel about 1 year ago and I have to say I've been very pleased with this purchase. While stuff in the trailer still gets out of place, it feels like it has improved the handling of the trailer over rough roads and during windy conditions. I've probably put about 5,000 miles on my trailer after installing this kit and have to say I have no regrets with this purchase.



- RM-2460-2570
by:

Review from a similar Comfort Ride in Trailer Leaf Spring Suspension


I would recommend this over other type upgrades. It may cost more but like the saying goes you get what you pay for. Install was not difficult.Installed on a 2015 Fuzion 325 toyhauler,towability plus road jarring much improved having ridden in trailer before and after,you can sit in the rear in your seat and not get thrown out.The other notable upgrade was the reese goose box fith wheel hitch,a real good upgrade. Tow vehicle 2016 RAM 3500 CAB CHASSIS 4×4 CUMMINS 6.7 DSL Bradfofd built Aluminum 4 box bed.



- RM-2460
by:

Review from a similar Comfort Ride in Trailer Leaf Spring Suspension


Great improvement over stock. Trailer tracks more stable. Less movement of stored away items. Less chucking, pretty much eliminated it.


Comments
Worth the time and expense, the trailer tracks much better, less movement of items inside the trailer.
Steve - 04/08/2022

Comments
Still working fine. I would definitely do this modification. Should have been done by the factory.
Steve - 04/14/2022


- RM-2460
by:

Review from a similar Comfort Ride in Trailer Leaf Spring Suspension


Love my RAS suspension. It did exactly what I was hoping for. Now I pull my trailer with NO rear end squat. It was really bad before I got the RAS heavy duty installed now no far fear with new setup.



- RM-2460
by:

Review from a similar Comfort Ride in Trailer Leaf Spring Suspension


Just finished installing the Roadmaster shock system on my Momentum 398M tri-axle. The kit arrived well packaged and all items were included. The instructions that come with it are pretty straight forward and easy to understand. This would probably be a lot quicker install with some helping hands, but I did it by myself in about 6 hours. The hardest part of the entire setup is all of the overhead drilling, but with a little redneck ingenuity I was able to make that bearable. As far as this kit goes, the ordering process and the outstanding customer service from Angela W, etrailer.com rocks!! This could be the start of a wonderful relationship..


Comments
Still feel it is the best upgrade you can do short of going independent. Still a great product for the price.
Johnny - 04/19/2020


- RM-2460-2570
by:

Review from a similar Comfort Ride in Trailer Leaf Spring Suspension


So far so good on my 2015 Open Range 3X427BHS! Overall, the old suspension system was just rusted and worn out and the tires were a maximum of 1" apart, which made me really nervous while pulling. It was tough to remove, but nothing a little WD-40 and some praying couldn't fix! Installation was pretty straight forward using the included directions and [online video] University. Looking forward to seeing how it rides this weekend on our next trip.



- RM-2460-2570
by:

Review from a similar Comfort Ride in Trailer Leaf Spring Suspension


After 1 year we are still very pleased. Have about 5000 miles towing and it is a much better ride. Worth the money. Ride is much better. We did have it professionally installed. It's a pretty big project for a driveway mechanic


Comments
Continues to perform very well.
Philip - 04/09/2021


- RM-2450
by:

Review from a similar Comfort Ride in Trailer Leaf Spring Suspension


We bought a new Grand Design 22 foot Travel Trailer and Ford Expedition Tow Vehicle. Even after we installed a Curt Trunnion Bar Equalizer Hitch, the trailer bucking was unbearable for long trips. It was so bad we were ready to sell the whole rig. The suspension of all travel trailers is sub-standard. We bought the Roadmaster RM-2450 Shock absorber kit and installed it ourselves. It made a WORLD OF DIFFERENCE in the ride! However, the installation was not easy for a 76 year old man. Thanks to a neighbor with a flat paved driveway and an extensive tool inventory, I got it done. You need pre-planning and high jack stands. Read the instructions and view some online videos before committing. Verify that there are no gas or water pipes next to the trailer frames. Determining the location of the upper shock frame bracket is tricky. This measurement sets the angle of the shock absorber, and has to be done BEFORE you lift the trailer and remove the wheels! You have to have the trailer loaded, the wheels on the ground and the tow vehicle connected. Then install one shock absorber from the bottom up and measure where the upper bracket sets on the frame. Then you can disconnect and lift the trailer up on jack stands and drill the frame holes. I was lucky that I was close to the IDEAL 35 degree angle on my trailer. I don't know what you would do if you are outside the 25 to 40 degree allowable range. The instructions say you have to get 12" long drill bits to drill into the bottom of the frame. There's not enough clearance to insert a standard drill between the springs and frame. Pushing the drill up overhead, and having the bit tight to the springs makes it almost impossible to get the holes straight. So when you drive the self tapping bolts into the holes it is very easy to strip them. A better solution is to have a low profile angle drill. Otherwise you'll be welding the brackets or glueing bolts. We also installed heavy duty shackles, wet bolts and bronze bushings while the trailer was up on the jack stands. You have to refer to other reviews for that. The Trailer Mfg. stock components are junk.


Comments
Great. We’ve towed all over the country about 13,000 miles, and we’re still pleased with the ride.
Roger - 05/23/2021


- RM-2460
by:

Review from a similar Comfort Ride in Trailer Leaf Spring Suspension


Excellent finish and overall durability BUT, the angles need a little tweaking. The top of the shock will contact the upper bracket as installed to the instructions.



- RM-2460
by:

Review from a similar Comfort Ride in Trailer Leaf Spring Suspension


this really did not seam to make any difference in the ride or towing of my 5th wheel. the product is made well and it has everything needed to install and fairly easy to install. just didn't do what I was thinking it would.



- RM-2460
by:

Review from a similar Comfort Ride in Trailer Leaf Spring Suspension


Great buy and easy to install and has made for a smoother ride.


Comments
The product is working as advertised. We continue to get a more smoother ride. I would strongly recommend this product to all your customers.
Lee V - 11/26/2021


- RM-2460
by:

Review from a similar Comfort Ride in Trailer Leaf Spring Suspension


An amazing product. Very heavy duty with all the parts and great directions.



- RM-2450
by:

Review from a similar Comfort Ride in Trailer Leaf Spring Suspension


Thank you for asking for a 1 year review as I never do them without enough test time. I have made several trips into western VA and West VA so have used the mountains and found it made a big difference in stability and bounce as advertised. No fault of the product but had I known I would have changed axles to next load level higher and kit to match. Instructions were pretty good, it does require some drilling through 3/16 steel 9/16" holes so having proper tools for job is essential. I got some trailer jack stands from [nationwide retailer] they provided safety at a reasonable cost. I highly recommend them.


Comments
Absolutely great I couldn’t be more pleased
Rich D - 04/20/2021


- RM-2460
by:

Review from a similar Comfort Ride in Trailer Leaf Spring Suspension


This is a great product, it smothered out my fifth wheel nearly eliminating the chucking.


Comments
Still working great. It was a great addition to my RV
David A - 07/06/2020


- RM-2460
by:

Review from a similar Comfort Ride in Trailer Leaf Spring Suspension


I did a custom installation on tandem axle 10K car trailer. Made a world of difference especially in windy situations. Highly recommend for any trailer application!



- RM-2460
by:

Review from a similar Comfort Ride in Trailer Leaf Spring Suspension


Every towable RV should be equipped with these shocks at the factory especially those like us that have a rear kitchen! The ride difference before and after is 'shockingly' (pun intended...) better. No more broken dishes and I know all of the installed components in our 2021 Keystone Cougar 29RKS suffer less wear and tear, and damage from road travel. It also made our tow vehicle ride much better than before the shock install due to 'bucking' on the fifth wheel hitch when towing the -29RKS. These shocks have been the best upgrade/add-on we have ever added to our current RV and four others in the past. Do yourself (and your RV...) a favor and INSTALL THESE SHOCKS! You won't be disappointed.



- RM-2460
by:

Review from a similar Comfort Ride in Trailer Leaf Spring Suspension


Highly recommend adding these on your camper. We added them to our Grand Design 2400 BH which was a night and day difference in ride quality. This eliminated a lot of the porpoising, chucking and side to side roll that you sometimes get. I was amazed how much smoother of a ride pulling the camper is now. Running these shocks now in combination with the Road Armor Equalizers.


Comments
Still working great!
Nathan L - 04/28/2021


- RM-2460
by:

Review from a similar Comfort Ride in Trailer Leaf Spring Suspension


I pull a toy-hauler 5th wheel trailer between Alaska and the lower 48 through Canada twice a year. Much of the road is rough and caused me to break a leaf spring every trip. Since installing a shock absorber system and upgrading from 5-leaf to 6-leaf springs, I have so far eliminated suspension damages on the route.


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Show More Reviews

Ask the Experts about this Roadmaster Trailer Leaf Spring Suspension



  • Do the Roadmaster Comfort Ride 5th Wheel Shocks Come with Brackets and Hardware?
    The Roadmaster Comfort Ride Shock Absorbers for Tandem Axle Trailers - 8,000-lb Axle # RM-2470 comes with the adjustable mounting brackets and hardware included. The tie plates included will replace your existing u-bolt tie plates but you will reuse the u-bolts themselves. Once the tie plates are in place you will bolt the upper mounting bracket to your trailer frame with the included hardware. These Nitrogen-charged shock absorbers will be a great help to the ride of your 5th wheel...
    view full answer...
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  • Compatibility of Roadmaster RM-2470 Comfort Ride Shock Absorbers with Disc Brake Equipped 8K Axle
    The Roadmaster # RM-2470 Comfort Ride Shock Absorbers for Tandem Axle Trailers aren't an RV specific item, they're designed for 8K axles with a 3-1/2 inch diameter axle tube with leaf spring suspensions. It will be compatible with disc brakes. If your axles meet those parameters, the Roadmaster # RM-2470 will work great for you. The linked video explains how the system works, but we don't have an install video at this time. I have linked to the installation instructions, which I hope...
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  • Recommended Roadmaster Comfort Ride Shock Absorbers for 8,000 lb Axles
    You will want the Roadmaster Comfort Ride Shock Absorbers for Tandem Axle Trailers - 8,000-lb Axle # RM-2470. This kit is specifically designed for that tandem axles of that capacity. If you want the entire upgrade kit then use the Roadmaster Comfort Ride Leaf Spring Suspension Kit w/ Shocks - Tandem 8K, 3-1/2" Axles # RM-2470-2580 is what you'd need. This has the shocks as well as the custom leaf spring system to reduce bounce, chucking, and porpoising of the trailer while increasing...
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  • Suspension Upgrade Recommendation for 2019 Grand Design 351M
    If the suspension of your 2019 Grand Design 351M is currently in good working order but you want to improve what you have by making the ride quality smoother you could go with just the shock portion of the Roadmaster Comfort Ride with part # RM-2470. You'd want to measure the diameter of your axles though. If they are 3-1/2 inch like what most 8k axles fit then the correct kit is the # RM-2470. If they instead are 3 inch you'd want the part # RM-2460.
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  • Can Roadmaster Comfort Ride be Used on Axles on Top of Leaf Springs of 8k Triple Axle Trailer
    Yes, you can absolutely use the Roadmaster Comfort Ride Shock Absorbers for Triple Axle Trailers - 8,000-lb Axle # RM-2470-3 on a trailer with the axles mounted on top of the leaf springs. When installing these on a trailer with the leaf springs on top of the axle, you will just bolt the extension plate to the tie plate’s mounting flange using the middle holes of the extension plate, as noted in the linked instructions for the Comfort Ride Shock Absorbers # RM-2470-3. These are going...
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  • Fit of Roadmaster RM-2470-2580 Comfort Ride Suspension Kit w/ Shocks With Underslung Axles
    According to Roadmaster, their # RM-2470-2580 Comfort Ride Leaf Spring Suspension Kit w/ Shocks can indeed be used with underslung axles (spring pack mounted below axle beam). I've linked to a demonstration video that you might find helpful.
    view full answer...
  • Recommended Leaf Spring Suspension For A 2020 Vanleigh Beacon
    The Roadmaster Comfort Ride Leaf Spring Suspension Kit w/ Shocks - Tandem 8K, 3-1/2 inch Axles # RM-2470-2580 will work on your 2020 Vanleigh Beacon if you have 8,000 pound 3-1/2 inch round axles. The leaf spring suspension kit prevents shock transfer between axles, increasing traction while braking by as much as 70 percent. This system helps reduce bouncing, and chucking of your trailer. The nitrogen-charged shock absorbers help limit up-and-down motion of the trailer on both compression...
    view full answer...
  • What is Stopping Side-to-Side Movement of Leaf Springs of Roadmaster Comfort Ride For 8K Axles
    It is a combination of the U-bolts and the tie plate that stops the lateral movement of the leaf springs in the Roadmaster Comfort Ride Leaf Spring Suspension Kit w/ Shocks - Tandem 8K, 3-1/2" Axles # RM-2470-2580. They are tightened down, and the spring itself won't be able to move from side-to-side either on the axle, or inside the slipper spring box of the # RM-2470-2580. So yes, this kit will fit so long as you do have the 3-1/2" diameter axles on your trailer.
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  • Can you Use the Roadmaster Comfort Ride Shock Absorbers for 5200 - 7000-lb Axes on an 8000-lb Axle
    The Dexter 8,000-lb axles are typically 3-1/2" in diameter, whereas the Roadmaster Comfort Ride Shock Absorbers, part # RM-2460, only fit on 3" diameter axles (which is standard for 5200 - 7000-lb axles). So, unfortunately, you will need swap these. We have the 8000-lb version of these shock absorbers here. They are part # RM-2470. I've linked to a video review of these for you to look at.
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  • Is There Roadmaster Comfort Ride Shock Kit that Fits 3 inch Diameter Axles
    If your axle diameter is actually 3 inches the correct Roadmaster Comfort Ride kit is the part # RM-2460. If you had the 3-1/2 inch diameter axle instead you'd need the # RM-2470.
    view full answer...
  • Roadmaster Comfort Ride Shock Absorbers for Tandem Axle 5th Wheel
    Based on the information you gave me you have a couple options for shock absorbers for your 5th wheel trailer. If you 5th wheel has 3" axles you are going to want the Roadmaster Comfort Ride Shock Absorbers for Tandem Axle Trailers item # RM-2460 you were looking at. This system is for a tandem axle trailer with 5,200 lbs to 7,000 lbs axles. These heavy duty gas shocks absorb road vibration to provide a more comfortable towing experience. This kit improves front-to-back, side-to-side, and...
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  • Which Roadmaster Shock Kit for 2022 Jayco Northpoint 377RLBH
    Since the axles of your 2022 Jayco Northpoint 377RLBH are going to be 3-1/2 inch (you might still verify) the correct Roadmaster Comfort Ride Shock Kit would be the part # RM-2470. If you measured the axle and found it to be 3 inch instead you'd want the part # RM-2460 instead.
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  • Correct Roadmaster Comfort Ride Shock Absorbers for Keystone Bullet 272BHS
    The Roadmaster Comfort Ride Shock Absorbers for Tandem Axle Trailers are chosen based on axle capacity. I looked up a Keystone Bullet 272BHS which shows a max weight of 7,610 lb weight capacity therefore you likely have have 3,500 lb axles and the correct kit for these are part # RM-2450. In order to confirm this you can read the axle tag sticker off the center of the beam or measure the beam diameter which should be 2-3/8".
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  • Roadmaster Comfort Ride Shock Absorbers for a 2020 Jayco 405 Talon Trailer
    For your 2020 Jayco 405 Talon it's going to depend on what size axle you have. The Roadmaster Comfort Ride Shock Absorbers for Tandem Axle Trailers - 8,000-lb Axle item # RM-2470 fits 3-1/2" axles. The Roadmaster Comfort Ride Add-On Kit for Triple Axle Trailers - 5,200-lb to 7,000-lb Axles item # RM-2460-50 fits 3" axles. You will need to determine what size axles you have to decide which kit to buy. I have linked a review video so you can see this system in action.
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  • Roadmaster Comfort Ride Shock Absorber Fit For 2021 Grand Design Imagine XLS 21BHE Travel Trailer
    While there is a Comfort Ride shock absorber kit that does fit your 2021 Grand Design Imagine XLS 21BHE, there is not a leaf spring suspension kit, as those are only fits for axles larger than the 3,500 lb tandem axles on your travel trailer. You will still get a much improved ride with the shock absorbers, with the correct fit for your trailer being the following: - Roadmaster Comfort Ride Shock Absorbers for Tandem Axle Trailers - 3,500 lb Axle # RM-2450 The Comfort Ride # RM-2450 will...
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  • Is There a Roadmaster Comfort Ride Shock Kit that Fits Trailer with 8k Axles
    Yes Roadmaster does offer a Comfort Ride Shock kit for 8k trailer axles with the part # RM-2470-2580. It's good to hear the 7k kit worked well on your older trailer!
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  • How To Improve The Ride Quality Of Brand New 5th Wheel Toy Haulers
    Stock components on any toy hauler are not going to be the best ride quality. You would think a brand new toy hauler like your 2020 Keystone Cougar 353SRX Toy Hauler would ride like butter off the lot, but swapping out the stock components are essential for optimal ride quality. Luckily we can provide what the dealership can't. The Road Armor Shock Absorbing Equalizer kit # LC696740 would be an easy way to Double the comfort on the road. Replacing your shocks will do a lot for your ride...
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  • Can Roadmaster Comfort Ride Kits Fit Under Slung Trailer Axles
    Yes, we've checked with Roadmaster in the past and they've confirmed for us that the Roadmaster Comfort Ride Leaf Spring Suspension Kits like the # RM-2470-2580-3 that you referenced can be used on under and over slung axle setups. The part # RM-2460-2570-3 is the kit that includes springs and shocks or for just a shock kit you'd want the part # RM-2470-3. I attached a review video for this for you to check out as well.
    view full answer...
  • Roadmaster Comfort Ride Leaf Spring Kit for Grand Design Solitude 3350RL
    In order to determine which leaf spring upgrade kit will work on your Grand Design Solitude you will need to know what size axles and how many axles you've got on the trailer. You can determine what axles are on the rig by checking the sticker/plate on the axle tubes; these identifiers will tell you who made the axle, its' capacity and/or diameter and will determine which suspension system is going to work best for you. If you have tandem axles with a 7000-lb capacity and a 3" diameter,...
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  • Will Roadmaster Comfort Ride Leaf Spring Suspension Kit Work on 7,000 lb Axles
    The Roadmaster Comfort Ride Leaf Spring Suspension Kit # RM-2460-2570 will work perfectly on the 7,000 lb axles of your Grand Design Solitude as it was specifically designed for 3" diameter axles with that rating. The 8,000 lb kit # RM-2470-2580 is designed to fit 3-1/2" diameter axles and would not work on 7,000 lb axles with a 3" diameter. It is certainly natural to wonder but there isn't any additional margin required as this system meets the ratings for your axles. The Roadmaster...
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  • How To Make Hauling A 43ft Fifth Wheel More Comfortable With A 2019 GMC Sierra 2500 Duramax
    That is a pretty big camper. You have done most of what you can do on your 2019 GMC Sierra 2500 SRW Duramax. The anti sway bar on the truck is only going to really benefit you if you are hauling a bunch of weight in the bed of the truck which is not the same as hauling a fifth wheel on a hitch. I would maybe look into upgrading the suspension on the trailer and adding something like the Roadmaster Comfort Ride Add-On Kit for Triple Axle Trailers Item # RM-2470-3. This kit is designed...
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  • How To Choose Correct Roadmaster Comfort Ride Leaf Spring Suspension Kit for 7/8K Axles
    In order to choose between the Roadmaster Comfort Ride Leaf Spring Suspension Kit, part # RM-2460-2570 or part # RM-2470-2580, you'll need to know either the axle capacity or axle diameter. If the trailer is not accessible then you can reach out to the manufacturer for this info. The 7,000 lb, 3" diameter axles are most common and likely what you have but I do recommend verifying beforehand.
    view full answer...
  • Which Roadmaster Comfort Ride Suspension Kit for 2019 Grand Design Momentum 351M
    Since your 2019 Grand Design Momentum 351M Toy Hauler has 7k axles which are 3 inches in diameter you'd have to stick with the Roadmaster Comfort Ride # RM-2460-2570 that was designed for the axle capacity and size you have. Going to the 8k capacity wouldn't work as that axle diameter is 3-1/2 inch.
    view full answer...
  • Availability of Roadmaster Comfort Ride for 7k Trailer Axles
    We have a complete Roadmaster Comfort Ride kit part # RM-2460-2570 for two 7k trailer axles like you need but we do not have these kits with axles as well since axles vary quite a bit based on dimensions. To pick a trailer axle you need to know the hub face to hub face dimension of the axle, the capacity, and the distance between the spring seat centers so the axle will attach to the trailer properly. We don't have every axle configuration but I did attach a link to a page that has all...
    view full answer...


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    We provide one-on-one, personalized service from the ordering process through the life of your product.
  • Trusted since 1946.

    We've been serving customers since our parts store first opened in 1946 and continue to be recognized by our customers, our vendors and third parties for exceptional service.
  • Returns Policy

    Need to return an item? No problem. Please read our Returns Policy for more information.

Info for this part was:

Employee Mike L
Expert Research:
Mike L
Employee Jameson C
Expert Research:
Jameson C
Employee Lindsey S
Edited by:
Lindsey S
Employee Dustin K
Video Edited:
Dustin K
Employee Wilson B
Updated by:
Wilson B
Employee Noah M
Updated by:
Noah M
Employee David F
Installed by:
David F
Employee Mike S
Written by:
Mike S

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