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Roadmaster Comfort Ride Leaf Spring Suspension Kit w/ Shock Absorbers - Tandem 7K Trailer Axles

Roadmaster Comfort Ride Leaf Spring Suspension Kit w/ Shock Absorbers - Tandem 7K Trailer Axles

Item # RM-2460-2570
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Our Price: $1,787.74
Trailer Leaf Spring Suspension
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Shipping Weight: 170 lbs
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This leaf spring suspension kit prevents shock transfer between axles, increasing traction while braking by as much as 70 percent. Heavy-duty shocks reduce bouncing, chucking and porpoising of your trailer up to 50 percent. Fits 3" axles. Lowest Prices for the best trailer leaf spring suspension from Roadmaster. Roadmaster Comfort Ride Leaf Spring Suspension Kit w/ Shock Absorbers - Tandem 7K Trailer Axles part number RM-2460-2570 can be ordered online at or call 800-298-1624 for expert service.
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Roadmaster Trailer Leaf Spring Suspension - RM-2460-2570

  • Equalizer Upgrade Kit
  • Leaf Spring Enhancement System
  • Suspension Kits
  • Springs
  • Round Axle - 3 Inch
  • 7000 lbs
  • Tandem Axle
  • Roadmaster

This leaf spring suspension kit prevents shock transfer between axles, increasing traction while braking by as much as 70 percent. Heavy-duty shocks reduce bouncing, chucking and porpoising of your trailer up to 50 percent. Fits 3" axles.


  • Suspension upgrade system provides a smooth, comfortable towing experience
    • Slipper leaf springs replace existing leaf springs
    • Center hanger boxes replace standard equalizers
    • Heavy-duty gas shocks absorb road vibration
  • Center hanger boxes isolate leaf springs to prevent shock transfer between axles
    • Independent axle operation increases traction by as much as 70 percent during braking
    • Built-in rollers keep spring ends from hopping inside of box to create a smoother, quieter, more controlled ride
  • Nitrogen-charged shock absorbers help to eliminate trailer bouncing, chucking, and porpoising
    • Limit up-and-down motion of trailer on both compression and rebound
    • Help to control trailer sway by limiting lateral movement
  • Maintenance-free Never Fail bushings come pressed into spring eyes
    • Constructed with molybdenum and graphite
    • More durable than brass or nylon
  • Simple, bolt-on installation
  • Made in the USA


  • Application: tandem-axle trailers
    • Axle size: 3" diameter (typical 5,200-lb to 7,000-lb axle)
  • Spring capacity: 3,500 lbs per spring
  • Leaf spring dimensions: 27" long (from center of spring eye to end of spring) x 1-3/4" wide
    • Eye diameter with bushing installed: 3/4" (9/16" without bushing)
    • Leaf thickness: 3/8"
    • Number of leaves: 5
  • Shock length:
    • Extended 17-1/2"
    • Compressed: 11-1/2"
  • Quantity:
    • Slipper springs: 4
    • Center hanger boxes: 2
    • Shocks: 4
  • Limited Lifetime Warranty

Roadmaster Comfort Ride Slipper Springs

Upgrade your current trailer suspension setup with the Comfort Ride system from Roadmaster. The Comfort Ride provides an improved towing experience for your tandem-axle trailer. Unlike traditional equalizers, the center hanger boxes in this system prevent shock transfer between axles, creating a smoother ride. In order to absorb and dissipate any road-induced shock that occurs, heavy-duty shock absorbers are included.

Leaf Spring Setup

One end of each of the included leaf springs will attach to a hanger welded onto your trailer. The eye of the front spring will attach to your existing front hanger, and the eye of the rear spring will attach to the rear hanger. The flat slipper end of each spring will slide into the provided center hanger box.

Roadmaster Comfort Ride Center Hanger Box

This center hanger box differs from a traditional equalizer, which typically connects the 2 springs on a tandem-axle trailer. In a standard equalizer setup, any vibration or road-induced force gets transferred between the axles until it eventually dissipates. This occurs because standard equalizers are built with pivot points at their center. So each time the front axle hits a bump in the road, the movement of that axle causes the spring to jump. This pivots the equalizer, which transfers movement to the rear spring and, in turn, to the rear axle, creating an ongoing wave of motion.

Roadmaster Comfort Ride Slipper Spring Rollers In Center Hanger Box

With the Comfort Ride setup, the center hanger sits flush with your trailer frame, preventing any movement of the box itself. This isolates each spring, thus eliminating any connection between the axles. To ensure that each spring is still able to move along with the axle, preventing an overly stiff ride, the flat end of the spring mounts in the center hanger box between a roller and a safety bolt. Having a roller positioned above the flat end will keep the spring from hopping inside of the box. Any up-and-down motion the spring incurs will be translated into front-to-back motion to create a smoother, quieter, more controlled ride.

The independent axle operation will improve handling and braking performance as well. Axle roll up occurs when the trailer's rear tires are lifted off the ground while braking, resulting in weight and traction being lost on the rear tires. With the Comfort Ride system installed, tire traction increases by as much as 70 percent during braking because there is no axle roll up. The result is a safer, more comfortable towing experience.

Gas Shocks Absorb Road Vibration

Instead of transferring shock between axles, the Comfort Ride setup ensures that each spring freely absorbs and dissipates any road-induced force on its own. In order to do this, heavy-duty shocks are included.

Roadmaster Comfort Ride Shock Absorber

The gas-powered springs inside of the shocks' 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.

You'll experience up to a 50 percent reduction in the force that's transferred to your trailer while traveling on paved roads. You'll also receive up to a 76 percent reduction over cobblestones and a 94 percent reduction over gravel roads. This means improved handling, even over potholes and uneven pavement, and the contents of your trailer will stay in place during travel.

Roadmaster 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. 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 and lateral movement during both compression and rebound.

Rigorous Testing Standards

This Comfort Ride 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 of the Comfort Ride system is fairly straightforward.

The eyes of the slipper springs attach to the welded hangers on your trailer's frame using your existing suspension bolts. The center hanger boxes bolt over your existing center hangers and secure in place with the provided hardware. Once the safety bolts and rollers are installed in the center boxes, just slide the slipper ends of the springs in so that they rest between the bolts and the rollers.

To install the shocks, begin by replacing your U-bolt tie plates with the plates included in this kit. 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.

2460 Roadmaster Comfort Ride Shock Absorbers - 3" Axles

2570 Roadmaster Comfort Ride Slipper Spring System - 7K Axle

Installation Details RM-2460-2570 Installation instructionsAlternate Instructions RM-2460-2570 Installation instructions

Customer Reviews

Roadmaster Comfort Ride Leaf Spring Suspension Kit w/ Shock Absorbers - Tandem 7K Trailer Axles - RM-2460-2570

Average Customer Rating:  4.9 out of 5 stars   (76 Customer Reviews)

This leaf spring suspension kit prevents shock transfer between axles, increasing traction while braking by as much as 70 percent. Heavy-duty shocks reduce bouncing, chucking and porpoising of your trailer up to 50 percent. Fits 3" axles.

- RM-2460-2570

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!

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-2460-2570

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

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

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

- RM-2460-2570

Happy with the product but the box is torn to shreds not designed for transport.

Still working well.
Alan B - 01/07/2022

- RM-2460-2570

Exceeded my expectations in performance on not so great highways across the United States. Porpoise action of the 5th wheel almost entirely eliminated. I strongly recommend this product to anyone.

Still working as expected, after an additional 20K miles??
Burl W - 03/23/2021

- RM-2460-2570

great product, I'm a fabrication/designer, well thought out and much better than the original factory suspension. I also added structural kickers to the suspension hangers to help side load generated while turning and not relying on the hangers for strength. I also replaced the original factory u bolts, might as well have all new going back on

- RM-2460-2570

Installation was easier than expected. You need to be somewhat mechanical inclined when attempting this on your own. Invest in some good jacks and even the small jack stands to hold the axles. Ride difference was noticed on the first trip out. Would recommend this to anyone with factory standard suspension system. I also added the Reese Goosebox hitch and with these two together WOW what a difference. Wife isn’t complaining anymore of chucking and being jerked around. That’s worth the investment all day long.

- RM-2460-2570

This was absolutely the BEST purchase I've made for my fifth wheel to date, hands down. Went from having very rough chucking/porpoising/bouncing to a rig that drives like a Cadillac. Seriously. If you are having issues with this while pulling your trailer, THIS is the product to install. HIGHLY RECOMMEND!!!

- RM-2460-2570

Really fast delivery. Great service.

- RM-2460

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. problems. Thanks etrailer for your help.

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

Review from a similar Comfort Ride in Trailer Leaf Spring Suspension

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

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-2450

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.

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

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, rocks!! This could be the start of a wonderful relationship..

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

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-2460

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-2450

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.

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

- RM-2460

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.

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

- RM-2460

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.

- RM-2460

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.

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

- RM-2460

Review from a similar Comfort Ride in Trailer Leaf Spring Suspension

As always etrailer delivered a great product, complete and undamaged in record time. I received the Roadmaster -2460 shock kit for the suspension on my 2019 36 foot fifth wheel three days earlier than expected and completed the installation myself in approx. six hours. Anxious to take it down the road and see how much it has improved the ride in my coach. Great price, easy installation and good instructions for those mechanically inclined DIY's.

The Roadmaster - 2460 shock kit improved the ride in my 36 ft. fifth wheel, eliminating the rough ride and jarring we had been experiencing previously. We have traveled approximately 10,000 miles since the installation and are extremely happy with the performance.
James P - 12/01/2020

- RM-2460-50

Review from a similar Comfort Ride in Trailer Leaf Spring Suspension

What I like better than the products are the people and support received from EVERYONE I have talked to at etrailer. If Forest River was half this good, I might buy another one, but most of the questions or problems I have come across with our fifth wheel have been solved by someone here after talking to a generic moron at the manufacturer. eTrailer ROCKS!!!

- RM-2460

Review from a similar Comfort Ride in Trailer Leaf Spring Suspension

I live in canada, the cost of the shock kit was xxx.xx Canadian cheaper than what I could buy it for in here even with the Dollar exchange and shipping, and I got it 7 weeks sooner than any other dealer I contacted here in Canada. The service from etrailer was excellent and the shock kit arrived on time as promised from UPS. Thank you etrailer for your excellent service, I especially liked the package tracking system. I was able to see the progress of my package from the time it was picked from the shelf to every step of the shipping process. I will purchase more from etrailer in the future now that I've experienced how easy the process is. *** If you are ordering from Canada insure you call etrailer and confirm the cost of Canadian to US exchange and the shipping cost. Remember that all figures are in US dollars.*** I have not yet installed the shock kit but I will update my review once it's installed and I've had a chance to pull the trailer.

- RM-2460

Review from a similar Comfort Ride in Trailer Leaf Spring Suspension

Well, all the shocks are installed. Working on my back is hard, not as easy to do stuff today as it was years ago but I got I done. Sharp drill bits and using the frame mounting plates as a guide was the key. However, I had so much dirt and metal bits in my hair I had to take my dogs flee comb to my head before I could shower. Now for the next project whatever that is. I’m sure I’ll think of something.

- RM-2460

Review from a similar Comfort Ride in Trailer Leaf Spring Suspension

I purchased this system for our 2018 Coachman Chaparral. We had noticed that it would sway after crossing bridges and especially when coming out of a curve or while turning. I found this system to be very helpful. I welded the mounting brackets to the frame of the 5th wheel and bolted the rest as instructed. I would recommend this product to anyone that wants to stabilize their RV. Thank you for allowing me to write a review.

- RM-2450

Review from a similar Comfort Ride in Trailer Leaf Spring Suspension

I received the RoadmasterComfort ice Shock Kit today and have not had the opportunity to install the the kit at this time. However, upon opening the box of parts, I was impressed by the quality of the materials provided in the kit. That is a grand start, for good review of the Roadmaster Kit. Will provide more review once installed and tested. Thanks for the expedient shipment of the kit and the follow-up.

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Info for this part was:

Employee Lindsey S
Edited by:
Lindsey S
Employee Jeff D
Installed by:
Jeff D
Employee Jameson C
Expert Research:
Jameson C
Employee Jacob T
Video Edited:
Jacob T
Employee Dustin K
Video by:
Dustin K
Employee Wilson B
Updated by:
Wilson B
Employee Isabelle B
Updated by:
Isabelle B
Employee Noah M
Updated by:
Noah M
Employee David F
Test Fit:
David F
Employee Mike S
Written by:
Mike S

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