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Roadmaster Comfort Ride Leaf Spring Suspension Kit w/ Shocks - Tandem 8K, 3" Trailer Axles

Roadmaster Comfort Ride Leaf Spring Suspension Kit w/ Shocks - Tandem 8K, 3" Trailer Axles

Item # RM-2460-2580
Our Price: $1,705.00
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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. Great Prices for the best trailer suspension parts from Roadmaster. Roadmaster Comfort Ride Leaf Spring Suspension Kit w/ Shocks - Tandem 8K, 3" Trailer Axles part number RM-2460-2580 can be ordered online at etrailer.com or call 1-800-940-8924 for expert service.
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Roadmaster Trailer Suspension Parts - RM-2460-2580

  • Leaf Spring Replacement System
  • Boat Trailer
  • Camper
  • Car Hauler
  • Snowmobile Trailer
  • Utility Trailer
  • Round Axle - 3 Inch
  • 4000 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.


Features:

  • 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


Specs:

  • Application: tandem-axle trailers
    • Axle size: 3" diameter
  • Spring capacity: 4,000 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: 9/16" (3/4" without bushing)
    • Leaf thickness: 3/8"
    • Number of leaves: 7
  • Shock length:
    • Extended 17-1/2"
    • Compressed: 11-1/2"
  • Quantity:
    • Slipper springs: 4
    • Center hanger boxes: 2
    • Shocks: 4
  • Limited Lifetime Warranty


Note: Your existing U-bolts may not be long enough for this install. U-bolts also suffer from wear and tear, so we recommend changing the U-bolts during this installation.


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

Many trailers will have shocks mounted at around a 40-degree 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 an optimum angle between 20 and 40 degrees. 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

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 - Tandem 3"

2500-80 Comfort Ride Slipper Spring System - 8,000 lb Axle

Installation Details RM-2460-2580 Installation instructionsAlternate Instructions RM-2460-2580 Installation instructions




Customer Reviews

Roadmaster Comfort Ride Leaf Spring Suspension Kit w/ Shocks - Tandem 8K, 3" Trailer Axles - RM-2460-2580

Average Customer Rating:  4.7 out of 5 stars   (11 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.

by:

After one year of traveling with the Roadmaster comfort ride suspension system, we have been very pleased with the suspension performance.



by:

I am pretty happy with the end results but I would like to share that the plate that the ubolts go through have slotted holes which allow the ubolts to slide out wider than the springs and they start to bend while trying to torque.
Luckily, the new ubolts were long enough to allow me to put the original plate on top of the supplied plate and that solved the issue.
Other than that, install was pretty straightforward and performs as advertised and expected.



by:

Can’t wait to install this. My RV’s been beat up for 10 years. I’ll write back later and see how good it is everybody raves about it.



by:

Improved the ride and handling of the rig immensely



by:

Randy

11/23/2023

First year traveling our 5th Wheel without any suspension issues! Holding up well. Great product!

Etrailer Expert

Mike L.

11/24/2023

@Randy We're glad it's working well for you!


by:

Marc M.

6/27/2022

Finally took the trailer for a long trip with the new suspension. Worked very well in smoothing the ride for the trailer out. Very little movement of stuff in the trailer on the 4000 mile trip out I40 and back on I80. Both roads known to be less that smooth. I would do this conversion again, if I got a different trailer. Pretty straight forward installation on the side of my house.



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See what our Experts say about this Roadmaster Trailer Suspension Parts

  • Fit of Roadmaster RM-2460-2580 Roadmaster Comfort Ride Leaf Spring Suspension Kit
    The ability of the # RM-2460-2580 Roadmaster Comfort Ride Leaf Spring Suspension Kit to fit without modifications will depend on the existing suspension. This isn't a RV-specific item, the system would be a direct replacement if the RV has 5200-7000 lb capacity axles that are 3 inches in diameter. I've linked to a demonstration video that you might find helpful.
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  • Recommended Complete System Trailer Frame Down for Roadmaster Comfort Ride
    The Roadmaster Comfort Ride Leaf Spring Suspension Kit w/ Shocks - Tandem 8K, 3" Trailer Axles # RM-2460-2580 will fit any 3 inch diameter axles. The closest rated 3 inch diameter axles we have are the Dexter Trailer Axle w/ Electric Brakes - E-Z Lube - 8 on 6-1/2 Bolt Pattern - 95" - 7,000 lbs # 8327834-EB. This axle comes with the hubs and brake assemblies so as long a 80 inch on center spring seats work for your trailer, this will be an excellent choice. You will also need the U-Bolt...
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  • Roadmaster Comfort Ride Suspension Kit for Arctic Fox 29-5T
    The Roadmaster Comfort Ride you'd want for your 2020 Arctic Fox 29-5T is the # RM-2460-2580 which is properly rated for your trailer, fits your 3 inch axles, is height adjustable so it can match the height you currently have, and will get rid of the chucking you are experiencing.
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  • Which Roadmaster Comfort Ride Kit for 2022 Cherokee Wolf Pack 325
    Since your 2022 Cherokee Wolf Pack 325 has a GVWR of 17,000 lbs the Roadmaster Comfort Ride kit I would go with is the 8k axle kit part # RM-2460-2580 that you referenced. This will give you additional weight capacity and will do a great job improving the ride quality as well. It will also work with your 33 inch wheelbase too.
    view full answer...
  • Can Correct Track and Roadmaster Comfort Ride Leaf Spring Suspension Kit w/ Shocks Fit Together
    The Correct Track Trailer Alignment and Lift Kit # RR23QX will work with the Roadmaster Comfort Ride Shock Absorbers # RM-2460, but the whole Roadmaster Comfort Ride Leaf Spring Suspension Kit w/ Shocks # RM-2460-2580 is designed to fit on a standard leaf spring suspension. If you are wanting to lift the height of your trailer a little as well as install the Roadmaster Comfort Ride Leaf Spring Suspension Kit w/ Shocks # RM-2460-2580 then you'll need to cut off your current hangers and...
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  • Will the 8K Roadmaster Comfort Ride Leaf Spring Suspension Kit Work With 7K Axles
    The Roadmaster Comfort Ride Leaf Spring Suspension Kit part # RM-2460-2580 will indeed work on 7,000 lb axles. The leaf springs would just be slightly overrated for what you need but there will be no problems with compatibility. It does require that you un-bolt the u-bolts so we recommend replacing them at this time using the U-Bolt Kit part # APUBR-9.
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  • Is 7K or 8K Roadmaster Comfort Ride Leaf Spring Suspension Kit w/ Shocks Better for 7K Axles
    Between the 7K # RM-2460-2570 and 8K # RM-2460-2580 Roadmaster Comfort Ride Leaf Spring Suspension Kit w/ Shocks I recommend going with the 7K for your 2018 Vilano 5th wheel. It will give you the best ride possible since it's designed to work with your exact axle weight rating. Would the 8K system work for your application? Yes, but I do believe the ride will be a little more aggressive than what is necessary.
    view full answer...
  • Which Roadmaster Comfort Ride For 15,000 lb Grand Design Momentum Trailer
    Since your Grand Design Momentum is weighing in at over 15,000 lbs, and has a GVWR even higher than that, I do recommend going with the kit for 8,000 lb, 3 inch axles: - Roadmaster Comfort Ride Leaf Spring Suspension Kit w/ Shocks - Tandem 8K, 3" Trailer Axles # RM-2460-2580 This will greatly improve the ride of your trailer, but as far as tire overload, no suspension upgrade is going to cure having more weight on a tire than it is rated for. You'll have to either reduce the weight or...
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  • Roadmaster Comfort Ride Kit for 2022 Grand Design 380FL for Full Timers
    You would be an awesome candidate for the Roadmaster Comfort Ride System for 8k axles part # RM-2460-2580. This would do a great job providing additional suspension support but what you'll really like is the shocks of system which will make the ride quality of the trailer a lot nicer which will be very helpful on the terrible roads that you mentioned travelling on. Since you have 3 inch diameter axles the correct u-bolt kit would then be the part # MR66ZR.
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  • Determining The Correct Roadmaster Comfort Ride System For A 2022 Grand Design Momentum 399TH
    Grand Design's website doesn't list the axle capacity of the 2022 Momentum 399TH so you would need to check the axles prior to purchasing a Comfort Ride kit. Most likely you'll have 7k axles, which would require part number # RM-2460-2570, but you could also have 8k axles. If you have 8k axles you'll want to use some calipers # PTW80157 measure the diameter of the axles because there are 8k kits for 3" axles # RM-2460-2580 and 3-1/2" axles # RM-2470-2580. I've attached a video below...
    view full answer...
  • What Is The Difference Between Roadmaster Comfort Ride RM-2460-2570 and RM-2460-2580?
    I would be happy to help! The Roadmaster Comfort Ride Leaf Spring Suspension Kit w/ Shock Absorbers - Tandem 7K Trailer Axles # RM-2460-2570 is for trailers that have 7000lb tandem axles, and use springs that have a 3500lb capacity each (one spring on each end of the axle). In contrast the # RM-2460-2580 is for trailers with 8000lb tandem axles, and uses springs that have a 4000lb capacity each (one spring on each end of the axle). Now both 7000-8000lb axles are 3" in diameter, but I...
    view full answer...
  • Will Roadmaster Comfort Ride Leaf Spring Suspension Kit Work With 9/16" U-Bolts
    If you get the Roadmaster Comfort Ride Leaf Spring Suspension Kit w/ Shocks # RM-2460-2580 you can use 9/16" U-bolts if you already have them. You also want to make sure the U-bolts attaching your trailer’s leaf springs to the axles have at least 3/4” of thread showing beyond the nut. If you need longer U-bolts you can use the # SP01-060 which are 1/2" diameter x 7" long which is the same as the 2630 listed in the Roadmaster manual. They also list a torque value for 9/16" U-bolts on the...
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  • How Much Travel Does The Roadmaster Comfort Ride Leaf Spring Suspension Kit # RM-2460-2580 Offer?
    I reached out to Roadmaster about the Comfort Ride Leaf Spring Suspension Kit w/ Shocks # RM-2460-2580 you are looking to install. While they are unable to give exact numbers for the length of travel on the leaf springs the shocks do have 5-1/2" of maximum travel. You may notice an initial change in ride height due to the new and heavier leaf springs but the system is not designed to increase your overall ride height on your 2018 Grand Design Momentum 351M 5th wheel camper.
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  • Will Roadmaster Comfort Ride for 8k Axles Work on Dexter 3.5 in Diameter Axles
    It won't work unless your 8k axles are 3 inch in diameter which is sometimes the case. The Roadmaster Comfort Ride part # RM-2460-2580 won't work on a 3.5 inch diameter axle.
    view full answer...
  • U-Bolts For Roadmaster Comfort Ride For 8,000 lb 3 Inch Axles
    Sorry for any confusion that may have arose, but what you want is the U-Bolt Kit for Mounting 8,000-lb, Round Trailer Axles # APUBR-35. These are designed for 3 inch diameter, 8,000 lb axles and are compatible with the Roadmaster Comfort Ride Leaf Spring Suspension Kit w/ Shocks - Tandem 8K, 3" Trailer Axles # RM-2460-2580.
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  • Can 8k Roadmaster Comfort Ride Fit 7k Axles
    Since both the 7k Roadmaster Comfort Ride system # RM-2460-2570 and the 8k version part # RM-2460-2580 are designed for 3 inch axles you can use either and in your case the 8k version would be perfectly compatible and give you a little more suspension support like you are wanting.
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  • Can I Use the Dexter Over/Under Kit and Roadmaster Comfort Ride Leaf Spring System Together
    Yes. The Roadmaster Comfort Ride Leaf Spring Suspension Kit w/ Shocks - Tandem 8K, 3" Trailer Axles # RM-2460-2580 can work with the spring pack either over or under the axles. If you've already got a Dexter # K71-385-00 installed or are going to add one, you've got nothing to worry about.
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  • Recommended Suspension Upgrade For A 2019 41' Montana Fifth Wheel With 2 7K Dexter Axles
    Hello Jim thank you for your question. Out of the options you are considering, both will be solid suspension upgrades for your 2019 Keystone 5th wheel, especially if all of the suspension is still stock. I do really like the Roadmaster Comfort Ride Leaf Spring Suspension Kit # RM-2460-2580 as the best option for this application. It will directly address both of your main concerns. The 4,000 lb rated springs will be a solid upgrade as far as weight capacity, and the comfort ride shocks...
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  • Where To Get Replacement Parts for the Roadmaster Comfort Ride Leaf Spring Suspension Kit
    Currently Roadmaster is the only supplier for the 8,000 lbs capacity 27" long slipper springs that are used on the Roadmaster Comfort Ride Leaf Spring Suspension Kit w/ Shocks item # RM-2460-2580. We do offer the following replacement parts: Replacement Shock Absorber for Roadmaster Comfort Ride Trailer Suspension System item # RM-204000-00 Replacement Tie Plate for Roadmaster Comfort Ride Suspension System item # RM22MR Replacement Tie Plate for Roadmaster Comfort Ride Suspension System...
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  • Which Roadmaster Comfort Ride Kit and Disc Brake Kit Fits 2016 Dutchmen V-3002 W/ Triple 7k Axles?
    I would be happy to recommend the correct Roadmaster Comfort Ride Leaf Spring Suspension Kit W/ Shocks for your 2016 Dutchmen Voltage V-3002 with triple 7000lb Lippert axles but the # RM-2460-2580 you were looking at is for tandem axle trailers with 8000lb axles. For your trailer you will need the Roadmaster Comfort Ride Leaf Spring Suspension Kit w/ Shock Absorbers - Triple 7K Trailer Axles # RM-2460-2570-3 instead. This kit is designed to work with triple 7000lb axles like you have,...
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  • Will Timbren Silent Ride or Roadmaster Comfort Ride Provide Smoother Ride on 2014 Palomino Puma
    The Roadmaster Comfort RIde Leaf Spring Suspension Kit w/ Shocks is going to give you the better ride between the two and is the best option available. The Silent Ride is a nice upgrade but it is not as comprehensive as the Roadmaster. It also doesn't have the same limited lifetime warranty that comes with the Comfort Ride. Neither of these are designed to lift your trailer. If you have an underslung axle (leaf springs running under the axle) you can flip the axle using # K71-384-00 (2-3/8"...
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  • Replacement Suspension Kit For a 2019 Crossroads Redwood 3951WB 5TH Wheel Camper With 8,000LB Axles
    You will need to use the Roadmaster Comfort Ride Leaf Spring Suspension Kit w/ Shocks # RM-2460-2580 for upgrading the suspension on your 2019 Crossroads Redwood 3951WB Fifth Wheel Camper. This kit is rated for your 8,000lb axle and the springs have the same capacity as your factory springs. The Timbren Silent Ride Suspension for Tandem Axle Trailers # TSR14K35T01 while capable of mounting your 8,000lb axle the springs only have a 14,000lb total capacity. Your Redwood needs the 16,000lbs...
    view full answer...
  • Does The Roadmaster Comfort Ride Suspension Kit RM-2460-2580 Equalize The Weight Across The Axles?
    The Roadmaster Comfort Ride Leaf Spring Suspension Kit # RM-2460-2580 isolates the front and rear suspension from each other. So the axles will not distribute the weight like it will with equalizer style spring systems. While this might not seem like an improvement it allows the suspension to function on its own and not transfer the road shocks to the other axle when it hits a bump.
    view full answer...
  • Recommended Roadmaster Comfort Ride For A 2022 Vanleigh Beacon 5th Wheel With 8K 3" Axles
    Since you have 8K 3" axles you'll just need the Roadmaster Comfort Ride Leaf Spring Suspension Kit w/ Shocks - Tandem 8K, 3" Trailer Axles # RM-2460-2580. The 3-1/2" requirement you were getting with the # RM-2470-2580 was simply because of the shock kit. I do recommend replacing your U-Bolts as well though with ones like # APUBR-9 as these get stretched and worn out after being torqued down and could potentially cause an issue down the road. These U-Bolts fit a 3" axle with 1-3/4" or...
    view full answer...
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