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  1. Trailer Axles
  2. Timbren
  3. 1200 lbs
  4. Universal Fit
  5. Spindles Only
  6. No Drop or Lift
Timbren Axle-Less Trailer Suspension - Standard Duty - No Drop - 1,200 lbs

Timbren Axle-Less Trailer Suspension - Standard Duty - No Drop - 1,200 lbs

Item # ASR1200S02
Our Price: $749.86
Trailer Axles
Shipping Weight: 56 lbs
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Get more clearance and a smoother ride when towing with Axle-Less trailer suspension. Built-in shock absorption limits rattle and bottoming out. E-Z Lube, standard-height spindle maintains deck height. Fits any trailer frame width and idler hubs. Great Prices for the best trailer axles from Timbren. Timbren Axle-Less Trailer Suspension - Standard Duty - No Drop - 1,200 lbs part number ASR1200S02 can be ordered online at etrailer.com or call 1-800-940-8924 for expert service.
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Timbren Trailer Axles - ASR1200S02

  • 1200 lbs
  • Universal Fit
  • Spindles Only
  • No Drop or Lift
  • Rubber Spring Suspension
  • No Hubs
  • Timbren
  • Easy Lube Spindles

Get more clearance and a smoother ride when towing with Axle-Less trailer suspension. Built-in shock absorption limits rattle and bottoming out. E-Z Lube, standard-height spindle maintains deck height. Fits any trailer frame width and idler hubs.


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
    • Spindles accept idler hubs
  • Keeps trailer deck height the same while increasing ground clearance
    • Standard-height spindle is built in
  • 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 (without hubs)
  • Weight capacity: 1,200 lbs
  • Bolt hole diameter: 1/2"
  • Suspension travel: 2-1/4"
  • 3-Year limited warranty


Tire, Wheel, and Hub Compatibility

  • Tire size: ST205/75R15 or smaller
  • Wheel diameter: 16" or smaller
    • This assumes a wheel with zero offset
  • Bearings (sold separately)
    • Inner: L44649
    • Outer: L44649
  • Races (sold separately)
    • Inner: L44610
    • Outer: L44610
  • Seal: 10-9 (sold separately)
    • 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 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" 13-13/16" 1" 5" 3-1/2" 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"




ASR1200S02 Axleless Trailer Suspension System by Timbren - Standard Height Spindle - Without Hubs - 1,200 lbs

Installation Details ASR1200S02 Installation instructionsAlternate Instructions ASR1200S02 Installation instructions




Customer Reviews

Timbren Axle-Less Trailer Suspension - Standard Duty - No Drop - 1,200 lbs - ASR1200S02

Average Customer Rating:  4.6 out of 5 stars   (300 Customer Reviews)

Get more clearance and a smoother ride when towing with Axle-Less trailer suspension. Built-in shock absorption limits rattle and bottoming out. E-Z Lube, standard-height spindle maintains deck height. Fits any trailer frame width and idler hubs.

by:

It was a very straight forward install, it goes pretty smooth if you take your time, double check your layout,

Make sure of your bolt sizes (length) before going to the store. If you plan the project, don’t rush, its not a race, it goes really good. I spent about 10 hours spread over two days by myself. I am just waiting for tires to arrive.



All that said very happy with the product and etrailer. Will recommend for any axel/suspension replacement.

K V.

8/29/2022

Things have worked out well, can hardly tell there is a trailer behind the ATV very smooth ride almost no noise, vert satisfied.



by:

ok, so firstly, the parts came well packaged and undamaged. What you need to know is that you may have to add angle iron or box tube or other metal parts NOT PROVIDED to make the hubs line up with where they were on your previous suspension (if this is a replacement). This is important to assure that the trailer rides at the same height, and that the tires are located in the same place in the wheel wells. In my case I had to add two pieces of box tube to the frame, and a third one that spans across from the left to the right axle-less suspensions. Also check that your trailer frame is square so that the toe-in adjustment is possible. All of this was fairly simple. Now to the satisfaction of the ride... I was replacing a leaf spring suspensions because it was making too much noise over bumps, and not damping the response to bumps well enough, with my very light weight boat (200 lbs). With the new parts installed, and radial tires replacing the bias ply tires I had, I do not hear the trailer at all now. I don't feel it bounce any more either. I completely did what I was looking for. I also want to mention that there were other sources of noise that I took care of as well. The hitch tongue was loose in the receiver, my trailer jack handle was flopping and making noise, as was the handle on the boat crank. With the new suspension and tires, and these fixes, I am ready for my cross country trip with the boat.



by:

I have an old sears game fisher trailer that was modified to fit my 12' Livingston, and you can't find parts to fit those old hubs, etc. so I switched it over using the Timbren system. Installation was a breeze for me and a friend, less than 3 hours total time using regular garage tools, and I couldn't be happier with the results. I went with a square bar instead of "boxing in" the hub members as it was easier and less work. I'd recommend the Timbren Suspension to anyone...



by:

I bought an 18 ft boat trailer and built a rack for carrying kayaks. The axle was rated for 2000 lbs on leaf springs. The trailer bounced like a basketball. After watching the video for this suspension system, I figured to give it a try. This product far exceeded my expectations. The trailer rides like it's floating on air, and the next best thing is all the spring rattling is gone. I would never go back to a leafspring suspension again. I can't believe how well this works.



by:

The greatest suspension I have ever had. On my wheel fish house, drive down road and get to lake everything is still where I set it. Can’t believe how smooth it rides. Will buy more when needed.

Chuck

1/13/2020

Still perfect



by:

400 miles on the trailer, seem to work well. Great paperwork and instructions.



by:

Every thing is fine.

Tim W.

12/17/2021

Seriously, it is still fine.



by:

The axle-less suspension worked very well for my boat trailer. The suspension was easy to attach to the trailer frame and provided a lower profile than the traditional leaf spring and axle system.



by:

The service from etrailer has been great! They have been very helpful through the entire purchasing process. My one star is due to the quality of the product. First, for something as heavy duty as these are, you’d expect better packaging. On arrival, one of the spindles was sticking out of the box and the hand holds were torn on one of the other boxes. I was a little worried what I might find in the damaged box but everything seems to be intact. The disappointing part is the quality of the welds. For the price you are spending on these, I would expect a higher quality of fabrication. There is undercut in the welds that hold the three support plates together and big ol sloppy welds every where else. Unsure of what to do as my trailer has been designed around this suspension system.



by:

I purchased the 3500 lb. set w/4" drop. Wish they made a 2" drop. Install was fairly easy, but most of your time will be consumed with alignment measurements, acquiring shims, and making adjustments. I was lucky to have a very square trailer frame. However, the "slop" in the all of the mounting bolts (especially, the spindle mounts) is more than the 1/8" window they specify. You will want to preload all bolts before tightening, and then measure for alignment/toe-in. The units are supposed to have camber built-in, but it's not near enough (more shims). Also, this suspension has more travel then the documents indicated. I had to re-mount my fenders 1" higher to keep the tires front hitting. When fully loaded, you might have 1" of travel left. All that being said, the ride is better than I anticipated. It's less bouncy than a torsion axle, and very quiet. If I was building a trailer from scratch, I would use this system, again.



by:

It is important to know that your wheels are going to sit very tight to the trailer frame. I needed to add an extension to the hub for it to clear the sides of the camper I built.



by:

We made an amazing creation out of those two axle-less axles.
We made a large fuel cell that is used for offroad use and it has worked excellent this entire time.
They are really great products and we would love to work with them again.
Actually, we do a ton of social media stuff and youtube and if you ever have interest in sending us products to build content around, I would love to have the opportunity!
Thanks,
Michael Brandt
Garage Bound, LLC (On Youtube and Instagram and all the other socials)



by:

Very smooth pull. I'm very impressed on how the trailer pulls. My traditional axle trailer seemed to bounce a lot on the highway which made a lot of noise, but with the Timbren Axle-less that I installed on a new trailer, the trailer is so smooth and way less noise.
Great product.



by:

The trailer rides great down the road and no more worries about saltwater and rusty leaf springs. Not a cheap option but I’m very happy with the setup. When installing, just be sure to measure accurately and have sharp drill bits. A drill press type of guide also helps ensure correct drilling angles. The first picture is of a mounting gusset a local welding shop made. One is needed for each side and necessary to provide needed mounting strength-at least on my trailer frame. Pics 2 and 3 show the mounted suspension on one side of the trailer. Pic 4 shows the suspension on one side of the trailer with the axle attached and a separately purchased disc brake assembly mounted on it. Finally, pic 5 shows a 2” box channel between both suspension assemblies. Independent suspensions would have been nice, but I wanted to ensure trailer rigidity was maintained. So, after one year, so far, so good. It’s all smooth sailing down the highway.



by:

Installed the Timbren Axle-less suspension a little over a year ago and approximately 5000 miles ago. I have been extremely satisfied with the installation and performance thus far and have had no issues. I also chose to install an optional crossmember for more strength using a 1/4" thick piece of 2x3 steel. I had to increase the weight capacity of my campers suspension due to renovating the interior completely and adding more weight. I also strengthened the frame to accommodate the extra weight. In addition to installing the Timbren 5200LB system I installed new 12" electric brakes and upgraded to 225/75R15 tires with E load range rating.



by:

Installed the Timbren Axle-less suspension a little over a year ago and approximately 5000 miles ago. I have been extremely satisfied with the installation and performance thus far and have had no issues. I also chose to install an optional crossmember for more strength using a 1/4" thick piece of 2x3 steel. I had to increase the weight capacity of my campers suspension due to renovating the interior completely and adding more weight. I also strengthened the frame to accommodate the extra weight. In addition to installing the Timbren 5200LB system I installed new 12" electric brakes and upgraded to 225/75R15 tires with E load range rating.



by:

Purchased 2 sets of the Timbren 1200 Axle-less systems for upgrading the suspension on an older 30' ft glider trailer. Single axle with small (13") tires made towing tough due to porpoising, dragging on drive entrances do to poor flotation; also German made and metric, no repair parts. GVW 2000 lbs equated to bouncy ride.

Dual sets now allow the trailer to ride over bumps and sharp inclines easily, smoothly, little bounce on country roads; porpoising is history. My glider now rides securely, safely, quietly.

Install time 4 1/2 hours (includes head-scratching). Results are outstanding, units are totally solid. Recommend the square tube interconnect, easy and quick - trailer frame was on the light side, so a precautionary fix. Clean look underneath.

Ordered 5 wheels w/tires, very nice.

Helpful neighbor so impressed he ordered a HD single set for his new DIY snowmobile trailer.

Customer satisfaction 100%, from phone order, online support, product information, immediate shipping, install instructions, followup... HIGHLY RECOMMENDED!



by:

Trailer suspension and disk brake performance is outstanding big big difference over leaf spring and electric drum brakes.
Installation required modifications to the frame to monut the timbren suspension



by:

I used these axles in a different way than most would. I needed a trailer that was small, could handle tight switch-backs, carry 600 lbs and be light. I had this idea and as a retired design engineer I saw a great possibility in this axle. I have made four of these trailers now, one as a camp trailer, 2 for trail work for State Parks and one as a utility trailer.



by:

Incredible system. Handled our Overland trek through Colorado and Moab. These axles on our 1917 Ford bed ran multiple Jeep Badge of Honor trails. The suspension handled flawlessly. Handles off camber rocks and drop offs smoothly. We ran the 4 inch lift and off road offset to fit the factory Jeep wheels.



by:

I rebuilt a 4 x 8 trailer using the Timbren Axle-Less Trailer Leaf Spring Suspension and it works great. I would recommend it to others.



by:

They have more pros than cons, but the second set I bought broke the flat plate that holds the spindle at about 8 months. The steel quality seemed less than I would expect since it basically peeled it back like a pop can as you can see in the pictures. Otherwise I like the clearance and ride. They last 2-3 years where the torsion axles I replaced would wear out in 4 months after driving down rough gravel roads. There is a grade zerk on the underside which I didn't realize until I bought the second set. That would have helped the first set last longer had I known about it.



by:

I put these on an off-road trailer build. They have been fantastic! I've done many miles and they held up great. Highly recommend.



by:

Timbren saved our RV road trip! The leafs on the axle on our 2018 Jayco TT came apart while driving in Maryland. We tried going to the manufacturer, but they were useless. Going to a RV mechanic meant being grounded for at least 2 months. Then we found Timbren. With the help of Timbren's excellent staff we purchased axle-less system through etrailer, who made sure we got as quick as possible. It came ahead of schedule, my husband installed the Timbren system and we were back on the road! The axle-less system is better than the original manufacturers. If you plan on taking your RV or TT farther than 100 miles GET THIS INSTALLED and get it through etrailer.



by:

These units install easily, are well made, and perform great! The trailer doesn't bounce around like you see a lot of trailers do while traveling down a bumpy road. I traveled some unpaved roads with no issues. I am certainly glad I went axleless. I installed with 15" tires. Problem is I didn't go big enough.

I intended to install on an existing trailer that I had. Changed my mind and built a new trailer. The new trailer came in heavier than I had planned. 2k pound capacity is now too small. I have to watch what I load the trailer with so I don't over load the suspension. I intend on buying the 3500 pound units when I have the money.


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    With the standard 4.80-12 tire having a section width of 4.7 inches and the Arisun LHAWG125JL12MB having a section width of 10 1/2 inches, it would exceed the space you have on the trailer. That being said, if you wanted to go with this tire and wheel combo, there is a solution to get the added room. The Timbren Axle-Less Suspension set up # ASR1200S02 is specifically designed to be used with larger, beefier off road style tires. As this would replace your current axle, you should check...
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  • What is Weight Capacity of Timbren Axle-Less Trailer Suspension System # ASR1200S02
    The 1,200 lb capacity of the Timbren Axle-Less Trailer Suspension System # ASR1200S02 is the axle capacity so it's the capacity of both sides together.
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  • What is Total Weight Capacity of Timbren Axle-less Suspension System # ASR1200S02
    The 1200-lb weight rating of the Timbren Axle-Less Trailer Suspension System # ASR1200S02 is the total for both units together, much the same as if they were actually a single axle. In your application for an 8 x 10-foot trailer whose loaded weight will be 2000-lbs you'll need a higher-rated set of Timbrens, say their # ASR2000S01, or for even more capacity their 3500-lb-rated # ASR3500S05.
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  • Can Homemade ATV Trailer Be Constructed of Aluminum Tubing
    You can uses aluminum tubing if you wish, however there are a couple of potential difficulties you'll want to be aware of. • I'm assuming you'll be welding the aluminum tubing, and that the rest of the trailer will be constructed of steel tube. Welding steel to aluminum isn't a simple process, and requires quite a bit of skill to be done correctly. • When you compare the same length of steel tubing to one made of aluminum, the steel will weigh 3 time more, but in order to obtain...
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  • How Much Does The Timbren Axle-Less Trailer Suspension System ASR1200S02 Weigh?
    The Timbren Axle-Less Trailer Suspension System # ASR1200S02 you mentioned weigh in at 57lbs for both sides, or 28-1/2lbs each. I included a video of the Timbren Axle-Less Systems for you to take a look at.
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  • How Much Clearance Is Needed For Tires When Installing Timbren Axle-Less System Under Trailer
    I called my contact at Timbren to get some information for you about the axle-less systems. For the 1,200-lb systems the distance from the center of the spindle to the underside of the frame where the bracket mounts it is 2-5/8 inches. And for these systems they have a deflection of 2-1/8 inches. I have attached a drawing that shows these dimensions you can check out. You will want at least an inch over the deflection distance. There is no hard rule because it depends on the road conditions...
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  • Trailer Bearings Needed For The Timbren Axle-Less Trailer Suspension System
    The Timbren Axle-Less Trailer Suspension System # ASR1200S02 use the same inner and outer bearing # L44649. If your bearings match your hub is good to go. If your bearings do not match you will need The Easy Grease Trailer Hub and Drum Assembly # AKHD-545-2-EZ-2K. This hub assembly has a bolt pattern of 5 on 4-1/2 inches and has a 1/2 inch diameter x 1-1/4 inch long wheel stud. This hub is pre-greased and comes with the bearings, races, grease seal, grease cap, and lug nuts. This hub has...
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  • Timbren Axleless Suspension for a Custom Leaf Blower Trailer
    I would be happy to help you find the right set of Timbren's for your custom leaf blower trailer. You will need the Timbren Axle-Less Trailer Suspension System w Hubs - Straight Spindle - 5 on 4-1/2 - item # A35RS545. It is a higher capacity but this is the system with a 5 x 4-1/2 bolt pattern that is capable of supporting your 15 inch wheels. Another option is to use the Timbren Axle-Less Trailer Suspension System - Spindle Only - Regular Tires - 1,200 lbs item # ASR1200S02 with the Trailer...
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  • Can Timbren Axle-Less Trailer Suspension System # ASR1200S02 be Used with 18.5 X 8.5 - 8 Tires
    The tire size you referenced, 18.5 X 8.5 - 8, has a metric equivalent which is 215/60-8, but this does not come into play when considering the Timbren Axle-Less Trailer Suspension System # ASR1200S02. This Timbren system can be bolted or welded to your trailer frame. What matters for using this system is that your existing hubs must have the same bearings, races and seals as the hubs for which this system is intended. The compatible inner and outer bearings are L44649, races are L44610...
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  • Is the Capacity of the Timbren Axle-Less Suspension System the Total Capacity?
    The listed weight capacity of the Timbren Axle-Less systems is the combined capacity of the pair. The 1,200 lb systems are the lightest we offer and there are a number of options for you depending on what you need. For example, the # A12RS440 has hubs with a 4 on 4 bolt pattern while the # ASR1200S02 is a spindle-only system. I've added a link to a video review on these systems for you to take a look at, as well as a link to each of our Timbren systems so you can find the best one for...
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Info for this part was:

Employee Lindsey S
Updated by:
Lindsey S
Employee Wilson B
Updated by:
Wilson B
Employee Amanda M
Updated by:
Amanda M
Employee Ryan F
Updated by:
Ryan F
Employee Michael H
Expert Research:
Michael H
Employee Adam R
Expert Research:
Adam R
Employee David L
Written by:
David L
Employee Kathleen M
Video Edited:
Kathleen M
Employee Randy B
Installed by:
Randy B
Employee Zach D
Video by:
Zach D

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