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  1. Trailer Axles
  2. Timbren
  3. 2000 lbs
  4. Universal Fit
  5. 5 on 4-1/2 Inch
  6. No Drop or Lift
Timbren Axle-Less Trailer Suspension w/ Idler Hubs - Standard Duty - No Drop - 5 on 4-1/2 - 2K
Timbren

Timbren Axle-Less Trailer Suspension w/ Idler Hubs - Standard Duty - No Drop - 5 on 4-1/2 - 2K

Part Number: A20RS545
In Stock
$750.30
Trailer Axles
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Get more clearance and a smoother ride. Built-in shock absorption limits rattle and bottoming out. E-Z Lube, standard-height spindle keeps your deck height the same. Fits any trailer frame width. Includes inner (L44649) and outer (L44649) bearings. Great Prices for the best trailer axles from Timbren. Timbren Axle-Less Trailer Suspension w/ Idler Hubs - Standard Duty - No Drop - 5 on 4-1/2 - 2K part number A20RS545 can be ordered online at etrailer.com or call 1-800-940-8924 for expert service.
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Timbren Trailer Axles - A20RS545

  • 2000 lbs
  • Universal Fit
  • 5 on 4-1/2 Inch
  • No Drop or Lift
  • Idler Hubs
  • Rubber Spring Suspension
  • Timbren
  • Standard Grade

Get more clearance and a smoother ride. Built-in shock absorption limits rattle and bottoming out. E-Z Lube, standard-height spindle keeps your deck height the same. Fits any trailer frame width. Includes inner (L44649) and outer (L44649) bearings.


Features:

  • Delivers a smooth, stable, quiet ride - regardless of load size
    • Jounce springs absorb road shock and support trailer's load
    • Rebound springs minimize body roll, rattle, and bottoming out
    • Built-in camber and toe-in reduce wear on your trailer's tires
    • Units work independently - what affects one side of your trailer won't affect the other
  • Eliminates axle beam to increase ground clearance and fit any trailer frame width
    • System replaces 1 trailer axle and suspension components
    • 2 Separate units bolt directly to your trailer's frame
  • Designed for your on-road adventures
    • Strong steel construction is built to last
    • Black powder coat resists rust and corrosion
  • Keeps trailer deck height the same while increasing ground clearance
    • Standard-height spindle is built in
  • Includes idler hubs with bearings, races, and seals
  • Allows for simple bearing maintenance with built-in grease zerks


Specs:

  • Application: single- and tandem-axle trailers that use regular tires
    • Tandem-axle trailers require 2 complete systems
    • Not recommended for triple-axle trailers
  • Quantity: 2 suspension units (with hubs)
  • Weight capacity: 2,000 lbs
  • Bolt pattern: 5 on 4-1/2"
  • Bolt hole diameter: 1/2"
  • Suspension travel: 2-7/16"
  • 3-Year limited warranty


Tire, Wheel, and Hub Compatibility

  • Tire size: 195/75R14 or smaller
  • Wheel diameter: 16" or smaller
  • Bearings (included)
    • Inner: L44649
    • Outer: L44649
  • Races (included)
    • Inner: L44610
    • Outer: L44610
  • Seal: 10-9 (included)
    • Inner diameter: 1.500"
    • Outer diameter: 1.987"

Note: This Axle-Less system requires crossbeam support. If your trailer frame doesn't have a crossmember in place, you can retrofit it with one, or you can add a support by running a piece of 2" x 2" steel tubing through the square holes cut into these units. You could also add a steel reinforcement bracket to the inside of the trailer frame.


Get more ground clearance and a more comfortable ride when you're towing with Timbren's Axle-Less trailer suspension. This suspension system provides great shock absorption to comfortably get you where you need to go and to protect your precious cargo as you travel - even on rough pavement. With 2 independently operating units, you'll get better handling when making tight turns. And because this system eliminates your axle and has standard-height spindles built in, you'll get more clearance without having to raise your deck height.


Timbren Axle-Less Suspension vs. Other Suspension Systems

There are many suspension options for your trailer or camper. So, what makes Timbren Axle-Less different?


Leaf Spring Example

Axle-Less systems are a definitive upgrade over traditional leaf springs, in part because they allow you to do away with your thru-axle, allowing for maximum clearance. As you've probably noticed, having a leaf spring suspension means that your axle will always hang at least a few inches below your trailer's frame, resulting in limited ground clearance. This may make it difficult to navigate rough roads.


In addition, while leaf springs do a great job of supporting an even load, they may cause your trailer to bounce and rattle when it's empty or to bottom out with a heavy load. And they don't offer any type of shock absorption for a smooth ride - unless you have upgrades built in. With Timbren's Axle-Less system, gone are the days of dealing with these annoyances - this suspension is designed for a quiet, balanced ride, whether your trailer's fully loaded or empty.


Torsion Axle Example

A torsion axle is a step up in terms of shock absorption, and it provides more clearance than a traditional, leaf spring suspension, but that crossbeam will still hang down some. And if your torsion axle gets damaged in any way, it can't be repaired - you'll have to replace the entire thing with a setup that matches your exact trailer frame width.


With the Axle-Less system from Timbren, you won't have a low-hanging axle beam to get in the way when you're driving on rough roads. The standard-height spindles on this setup will keep your deck height the same, so you'll get that extra clearance and still be able to easily load and unload your trailer. And the rubber springs and independent operation both combine to absorb shock and deliver a smooth, easy ride. In addition, the Axle-Less system can be easily maintained over time, and it will fit any trailer frame width, so you don't have to worry about potentially ordering the wrong size like you might with other systems.


Timbren Silent Ride Example

Another suspension upgrade on the market is Timbren's Silent Ride. This setup is a great option to reduce bounce and rattle because it has the same AEON rubber springs as the Axle-Less system. But the Silent Ride still requires an axle, so you won't get the same ground clearance or low deck height as you will with the Axle-Less suspension.


Timbren Axle-Less Suspension Parts

The Timbren Axle-Less suspension is designed with you in mind. All of the parts work together so you can tow your trailer comfortably - regardless of load size.


Timbren Axle-Less Suspension Parts Diagram

  1. The jounce spring supports the weight of your trailer and cargo. It easily absorbs road shock and is constructed of AEON heavy-duty, hollow rubber.
  2. The rebound spring delivers a smooth, stable ride - regardless of how much cargo is on the trailer. It controls the movement of the jounce spring to minimize trailer body roll, bounce, rattle, and bottoming out.
  3. The trailing arm with integrated hanger attaches the suspension to the side and bottom of the trailer frame.
  4. The control arm carries the spindle and the hub. It pivots on strong, long-lasting polyurethane bushings that never require lubrication.
  5. The E-Z Lube drop spindle is simple to grease. If damaged, it can be removed and replaced, saving you both time and money compared to a traditional axle.
  6. The built-in hole accepts 2" x 2" steel tubing (not included) to add support to your trailer's frame. The tubing sits higher than a trailer axle, providing additional ground clearance.

Installing the Timbren Axle-Less Suspension

Measuring Diagram

The first step in installing the Timbren Axle-Less suspension is to make sure that the mounting points for each unit are directly across from each other. The easiest way to measure this is to mark the desired mounting points on your trailer's frame. Then measure the distance between these points and the center of your trailer coupler. These measurements (A and B) need to be within 1/8" to keep your trailer frame square.


Once you have your mounting points lined up, you'll be ready to install the system. Drill 3 holes into your trailer frame at the desired mounting points. Then bolt each unit to the frame with Grade 5, 1/2" bolts (not included).


Keep Your Trailer Frame Square

Because Timbren's Axle-Less system eliminates your trailer's thru-axle, you'll have to find another way to get the crossbeam support that keeps your trailer frame square. You have a few different options to do this depending on your application and how much fabricating you're comfortable doing.


Crossmember Installation

If you're building a trailer, the best option is to begin building with the Timbren Axle-Less in mind and include a crossmember where you want to install the units on your frame. You can also retrofit an existing trailer with a crossmember.


Steel Tubing Installation

If you don't have a crossmember where you want to install the Axle-Less system (and you don't want to add one), pick up a section of 2" x 2" steel tubing from a nearby weld shop. This tubing will serve as a support to keep your trailer square. It will hang only about an inch down from your trailer frame, providing more clearance than a thru-axle.


After you've mounted both of the units to your frame, you'll need to drill 3 holes into the steel tubing and into the built-in, square holes. Then, insert the tubing through the holes and secure it with 3 bolts (not included) on each side.


Reinforcement Bracket Installation

The last option is to fabricate a reinforcement bracket that can be attached to the inside of your trailer frame and to the Axle-Less suspension. It may be a little harder to fabricate a compatible bracket than to mount steel tubing, but you may get additional clearance with this method.


Dimensions of the Timbren Axle-Less Suspension

The following diagrams show measurements taken on the Timbren Axle-Less suspension system.

Axle-Less dimensions front view

A B C D E F
11-3/8" 13-3/4" 1" 5" 3-7/8" 3-3/4"


Axle-Less dimensions top view

G H I K L
4-5/8" 4-7/8" 3-7/8" 3-3/4" 3-1/8"




ASR2000S01 Axleless Trailer Suspension System by Timbren - Standard Height Spindle - 5 on 4-1/2" Hubs - 2,000 lbs

88545_2 Trailer Idler Hub Assemblies - 1/2" Studs - Quantity 2





Ratings & Reviews

4.5

105 reviews
Get more clearance and a smoother ride. Built-in shock absorption limits rattle and bottoming out. E-Z Lube, standard-height spindle keeps your deck height the same. Fits any trailer frame width. Includes inner (L44649) and outer (L44649) bearings.

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Shipped fast. Parts look good.



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Customer service was excellent and the products were well priced



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have not opened the boxes yet



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great customer support and help, wonderful advice. fast shipping and the best - great value for the dollar



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Very nice product and fast shipping, good price



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Ashley was extremely helpful and quick to respond to my questions both via phone and email. Excellent customer service and quick turn around on my order.



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Shockingly high quality product. Every trailer I build from now on will feature this!



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I have not installed them yet but looking at them they look like they are going to be easier than I expected.



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Great system



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easy to install, works well.



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Everything was as advertised! Fast shipping and well packaged! And good quality.
And the best part, they respond very fast to my emails!! very nice! Don't think all be using my local retailers anymore.



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GREAT PRODUCT BUT THE BEST OF ALL IS CUSTOMER SERVICE, THEY ARE ALWAYS HELPFUL



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Customer service was excellent! Thanks!



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High quality parts, very effective replacement for springs and axle... Installation was easy enough, probably took two guys a total of 2 or so hours to do with the right tools which is ALWAYS the key to an efficient job of any kind...

Rose G at E Trailer was great with regard to customer service...

5 Stars all around!!!



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Great product,super quiet while trailing on the road. Great for replacing dual axles and gives better options when you have a tire flat or hub issue. All of these are independent of each other.


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Show More Reviews

See what our Experts say about this Timbren Trailer Axles

  • Which Axle for Homemade Trailer
    You'd be best off tailoring the suspension to the maximum weight you're planning on carrying. If you'll be carrying around 1100 lbs typically, I'd recommend going with a 2K axle/suspension. A one inch spindle is typically used on a 2K capacity axle, so that's likely what you have now. I'll link you to our selection of 2K capacity axles, some that include hubs. You'll want to choose an axle with the same hub face to hub face dimension and spring center to center distance (although spring...
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    To upgrade the axle and hubs on your Northern Hardware Trailer, I recommend looking at an Axle-Less System like the Timbren # A20RS545. This suspension system will provide you with a smooth, quiet, and safe ride and can completely eliminate the need for an axle. It is designed to fit any frame width and features straight, EZ Lube spindles for easy bearing lubrication. This particular system is rated for 2,000 pounds and includes idler hubs with a 5 on 4-1/2 inch bolt pattern. They will...
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  • Replacement Axle for 5 x 10 Utility Trailer
    Thank you for all the information; you seem to know the measurements you need, which are hub face to hub face and spring center to spring center. The closest axle we have to the measurements you gave is the Dexter # 20545I-ST-72-15, which measures 72" from hub face to hub face and 58" from spring center to spring center as shown in the accompanying photo. This axle has a 2,000 lb capacity, have idler hubs with a 5 on 4-1/2" bolt pattern (I have attached a link to a help article on determining...
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  • Could Timbren Axle Less Kit be Used for Off Road Trailer
    Hey Jesse, we have the Timbren Axle Less kit part # ASR2KHDS04 which has a 4 inch lift built into it which would allow it to work great on an off-road trailer. This is a 2,000 lb axle. Would that work or would you need a higher capacity axle?
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  • How to Find Axle Weight Rating on 2022 Triton Model LTWCI-TX Trailer
    Hey Dave, thanks for reaching out! From what I'm finding online it looks like the max cargo capacity is 1,785 lbs (not including the weight of the trailer) so if the fully loaded trailer is only weighing in at about 1,000 lbs it would explain why it bounces around with pavement changes. You should be able to find the GAWR (gross axle weight rating) on a label in the middle of the axle itself so that's one way to confirm if you're loaded down enough to make your suspension work properly. I'd...
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  • Timbren Axle-Less Trailer Suspension System Rated for Higher Than 2,000 Pounds
    The Timbren Axle-Less Trailer Suspension System, part # A20RS545, is rated for a total of 2,000 pounds. Essentially, it's designed to work in place of a suspension system and a 2,000 pound standard axle. If you need a 3,500 pound system use part # A35RS545 that has idler hubs with the same 5 on 4-1/2 bolt pattern. If you want to add brakes instead use part # A35RS545E that includes the hub and drums, as well as the brake assemblies. There really isn't anything to retrofit. You just...
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  • Availability of 2,000 Pound Timbren Axle-Less System with 6 Hub Face Dimension
    For your trailer we have the Timbren Axle-Less Trailer Suspension System # ASR2000S02 that has a 2,000 pound weight capacity and a hub face dimension of right at 6 inches (see attached image). This particular assembly does not include idler hubs but they can be added with the etrailer.com # AKIHUB-545-35-EZ-K. These hubs feature the 5 on 4-1/2 inch bolt pattern you're needing and includes the bearings, races, and seal. I have attached a couple short video demonstrations that you can...
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  • What is the Total Weight of Timbren Axle-Less Trailer Suspension w/ Idler Hubs
    The total weight of the Timbren Axle-Less Trailer Suspension w/ Idler Hubs # A20RS545 is 72 lbs. This includes all of the left and ride side components.
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  • Solution for Timbren Silent Ride Type Suspension Installed on Trailer with 2 inch Square Axles
    I have a great idea I think you'll like but we don't have a Silent Ride that will work with any size square axles as that is the standard shape of axles. Instead a Timbren Axle Less kit like the part # A20RS545 would be a great option to replace the axle and your suspension with a similar setup that I think you'll really like. This uses the same rubber spring setup for the suspension and also completely replaces the axle.
    view full answer...
  • Do Timbren Axle-Less Trailer Suspension Systems Require A Frame Support
    Timbren has stipulations in place that state if you install the Timbren Axle-Less Trailer Suspension w/ Idler Hubs # A20RS545 in an area where there isn't a crossmember in frame that you'll need to install a 2" x 2" steel tube in the slot I have pictured below to help support the frame. Without a crossmember in the frame or a tube installed in these slots you would be placing more stress on the frame and could damage it further.
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    Image 1 for
  • How to Choose Correct Replacement Axle for a 2008 American Freedom Go Anywhere Toy Hauler
    To replace the axle on your 2008 American Freedom Toy Hauler we need to confirm the weight capacity and dimensions of your axle. You should be able to find a weight rating either on the spec sticker on your trailer or on a label in the middle of the axle. Once we know the weight rating we can then take the hub-face and spring-center dimensions (see attached) to make sure the replacement axle will fit correctly. You can potentially go up a size for your axle but it really depends on what...
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    In order to find replacement hubs for your 1977 ShoreLand'r boat trailer you will need exact measurements. I recommend using a digital caliper like the # PTW80157. You can either measure the spindle where the bearings ride or the inner diameter of your old bearings. See the helpful diagram below. For example, if you found that your inner bearing was # L68149 (1.378" inner diameter) and your outer bearing was # L44649 (1.063" ID) you could use the # AKIHUB-545-35-EZ-K as a replacement....
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  • Can Timbren Axle Less Kit Fit on Aluminum Frame Trailer
    The Timbren Axle-Less Suspension System, # A20RS545, is compatible with aluminum trailer frames. I recommend that when installing the system that you use rubber shims the fit between the steel of the Timbren axles and the aluminum frame to prevent galvanic corrosion. The included hardware will work for the steel on aluminum application.
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  • Replacement Axle Options For a Dexter 2,000LB Axle With 45" Hub Face and 26" Spring Center
    The only option we will have to replace your current axle is switching an Axle-Less system like the Timbren # A20RS545. I reached out to Dexter and was able to see your axle has a 45" hub face to hub face and 26" spring center to spring center. The Timbren option is a 2,000lb capacity and has the same 5 on 4-1/2" bolt pattern as your Dexter axle. If you only want to replace it with a similar axle you will need to find a local trailer dealer who deals with special order from Dexter and...
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  • What is the Difference Between Regular and Off Road Trailer Tires for Timbren Axleless Suspension
    Off road tires tend to have a more aggressive tread pattern and can be wider/taller. Generally speaking most all trailer tires are regular tires. There are some turf tires and off road tires out there that would fall into this category but if you are not sure I would need to know the tire brand and model to determine which axleless suspension system would work best. I have included a couple of dimensional drawings that show the relevant measurements that you can compare with your tires...
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    Image 1 for Image 2 for
  • How to Determine if Timbren Axle Less Suspension Kit Will Clear Bottom of Deck Trailer
    I attached two pictures to this page that have dimensions that you can use to determine if the Timbren Axle Less Kit part # A20RS545 will be able to fit and clear the deck. When this kit is installed on a trailer the wheel center will be 2-5/8 inches from the bottom of the trailer's frame when the suspension is uncompressed and then when fully compressed the wheel center will be exactly even with the bottom of the trailer frame. What you'll need to do is measure from the bottom of your...
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  • What Are The Dimensions Of The # 42 E-Z Lube Spindle TRU37FR?
    There is not a Cad drawing of the #42 E-Z Lube Spindle w/ Flange for 5.2K to 7K Trailer Axles - 2-1/4" Diameter # TRU37FR available, but I did include a diagram showing all of the dimensions. It is recommended to have a an axle shop weld the spindle on as they will have all of the required tools and fixtures to square the spindle perfectly to the trailer.
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    According to the research I have on a Dexter 69-46 A2 boat trailer axle, that axle is a 2k axle with the common 5 on 4-1/2 bolt pattern. While we have an option for you, we do not have a 2k axle that measures 91 inches from hub face to hub face like yours. The absolute best option is an axle-less solution like the Timbren Axle-Less Trailer Suspension System with Hubs - 5 on 4-1/2 - Regular Tires - 2,000 lbs # A20RS545. This suspension system comes with all you need, including idler hubs,...
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  • Will the 2K Timbren Axle-Less System A20RS545 Work with 15 Inch wheels
    I do have what you need but the Timbren Axle-Less Trailer Suspension System part # A20RS545 will only work with wheels up to 13" diameter because the hubs do not have enough surface area to support this larger size wheel. Instead, you would want to use the Timbren Axle-Less Trailer Suspension System part # ASR2000S01 with the Trailer Idler Hub Assembly part # AKIHUB-545-2-LFEZ-2K as this would provide you with a hub size that is compatible with the larger 15" wheels. It uses the same spindle...
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  • Largest Recommended Wheel and Tire For Use With Timbren Axle-Less Trailer Suspension # A20RS545
    Our largest wheel and tire we carry I recommend using for the Timbren Axle-Less Trailer Suspension # A20RS545 is the Karrier ST205/75R15 Radial Trailer Tire with 15" Aluminum Wheel # KE27JR. This is our largest wheel diameter with the 5 on 4-1/2" bolt pattern the Timbren above includes. The hub face offset being 4-7/8" with the tire having a width of 7.6 and zero offset will give you roughly 3-7/8" from the hub and 1" of clearance which is sufficient. The tire has a load rating of 1,820lbs...
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