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  1. Trailer Axles
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  3. 3500 lbs
  4. Universal Fit
  5. Spindles Only
  6. Drop - 4 Inch
Timbren Axle-Less Trailer Suspension - Standard Duty - 4" Drop - 4 Bolt Flange - 3,500 lbs

Timbren Axle-Less Trailer Suspension - Standard Duty - 4" Drop - 4 Bolt Flange - 3,500 lbs

Item # ASR3500S04
Our Price: $1,135.84
Trailer Axles
Shipping Weight: 95 lbs
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Get more ground clearance and a smoother ride when towing with Axle-Less trailer suspension. Built-in shock absorption limits rattle and bottoming out. E-Z Lube, 4" drop spindle lowers deck height for easy loading. Fits any trailer frame width. Great Prices for the best trailer axles from Timbren. Timbren Axle-Less Trailer Suspension - Standard Duty - 4" Drop - 4 Bolt Flange - 3,500 lbs part number ASR3500S04 can be ordered online at etrailer.com or call 1-800-940-8924 for expert service.
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Timbren Trailer Axles - ASR3500S04

  • 3500 lbs
  • Universal Fit
  • Spindles Only
  • Drop - 4 Inch
  • Rubber Spring Suspension
  • No Hubs
  • Timbren
  • Easy Lube Spindles

Get more ground clearance and a smoother ride when towing with Axle-Less trailer suspension. Built-in shock absorption limits rattle and bottoming out. E-Z Lube, 4" drop spindle lowers deck height for easy loading. Fits any trailer frame width.


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
  • Lowers trailer deck height for easier loading and unloading
    • 4" Drop 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: 3,500 lbs
  • Brake flange configuration: 4 bolt
  • Bolt hole diameter: 1/2"
  • Suspension travel: 1-3/4"
  • 3-Year limited warranty


Tire, Wheel, and Hub Compatibility

  • Tire size: ST215/75R15 or smaller
  • Wheel diameter: 16" or smaller
    • This assumes a wheel with zero offset
  • Bearings (sold separately)
    • Inner: L68149
    • Outer: L44649
  • Races (sold separately)
    • Inner: L68111
    • Outer: L44610
  • Seal: 10-19 (sold separately)
    • Inner diameter: 1.719"
    • Outer diameter: 2.565"

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 drop spindles built in, you'll get a lower deck height without sacrificing clearance.


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 and a high deck height. This may make it difficult to navigate rough roads and to load items into your trailer.


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 drop spindles on this setup will also lower your deck height, making loading and unloading your trailer way easier. 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, 4" 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 8, 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
13" 16-3/8" 1" 5" 0" 4-1/4"


Axle-Less dimensions top view

G H I J K L
5-5/8" 6" 4-3/4" 1-3/4" 3-3/8" 3-11/16"




ASR3500S04 Axleless Trailer Suspension System by Timbren - 4" Drop Spindle - Without Hubs - 3,500 lbs

Installation Details ASR3500S04 Installation instructionsAlternate Instructions ASR3500S04 Installation instructions




Customer Reviews

Timbren Axle-Less Trailer Suspension - Standard Duty - 4" Drop - 4 Bolt Flange - 3,500 lbs - ASR3500S04

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

Get more ground clearance and a smoother ride when towing with Axle-Less trailer suspension. Built-in shock absorption limits rattle and bottoming out. E-Z Lube, 4" drop spindle lowers deck height for easy loading. Fits any trailer frame width.

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.

Comments
Nothing has changed. Still working great.
Jon - 03/15/2024


by:

Very nice quality, I had to call Timbren with a question very good company to deal with and etrailer is a first class company very good customer service.



by:

My trailer is an enclosed race car carrier originally built with dual axles and leaf springs. The maximum weight of the trailer and load would be about 5,000lb.

This Timbren product is well engineered, well constructed and does what it is designed to do. Much better system than the dual axle, leaf spring set up.

Installation may me a bit more complicated than the videos or supplied directions indicate. Look at the videos and directions and your trailer and plan ahead. Take measurements, decide on how to reinforce the frame and buy high quality hardware if you plan on bolting everything together.

This Timbren product would be a great choice if you were building a trailer from scratch. Choosing to convert an existing trailer suspension is a more complicated choice. For me it was worth the effort.





by:

Product looks great. I had to some leg work to get shipping moved along but otherwise satisfied.



by:

Packaging very good and shipping fast.
Excellent
communication and shipment was tracked by company representative.



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.

Comments
After a year of use, still working well. The trailer tows well and the lower profile is helpful when launching.
JB - 07/30/2023


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.

Comments
I am sorry to hear that you received them in this condition. Lets get your information over to customer service so they can get these exchanged.
-- Etrailer Expert Katrina D - 01/10/2024


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.

Comments
This suspension is rated for 2000 lbs, and my trailer weighs in at 1600 lbs. After about 30,000 miles though, elastic bumpers where basically flattened out. Good news is that these are super easy to replace, but bad news is that Ill be replacing the whole system with the 3600 lb system. Im guess that the bouncing on the suspension, even with a trailer that was under spec, exceeds the 2000 lb rating. So, the short story - these systems arent rated to the weight of your trailer, but the force of your trailers bouncing. Extra bad news - each of the Timbren systems are different sizes. The arm in this new one is longer, the distance of the hub from the suspension arm is greater, even the holes for mounting it are different spaces. So, it aint like you can just bolt on a different Timbren. Since the fenders on my camper are fixed, Ill be welding a plate over the existing drill holes and drilling new ones. I wish I had known before I purchased the first suspension system that the rating isnt about trailer weight. Still, the folks at etrailer have been super nice through the whole process.
Matthew - 04/21/2024


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.

Comments
Actually over a year, and still working great.
dale - 04/22/2022


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!

Comments
I have just a little more to add regarding my purchase: Two sets, of the Timbren Axle-less assemblies, 1200 lb, and 5 wheels. I placed the order via phone, and whoever was on-call that day provided great answers and recommendations regarding the units, wheels and tires. At 31 feet, the trailer originally exhibited amplified porpoising on any bumps or dips in the road. Also bouncing and occasional sideways tipping due to the single axle. It made a lot of noise on my mountain community washboards. I speculated that the Timbren units would solve most, if not all of these problems and they have. Installation on my older 31 ft European ie, metric and no longer manufactured glider trailer was a mere 4.5 hours from removal of the old single axle to setting the trailer back down on its new assemblies. Instructions are complete, precise, useful and helpful. Appreciated. Little to comment on as installation was all straight-forward. I would like to describe the maiden voyage to the airport and back, but there is nothing to tell, other than it towed beautifully proper alignment instructions, and all that I viewed from the rear view mirror looked like a magic carpet ride. It rides over washboards and pot holes like a marathon hurdler, the 4-wheel independent suspension is great. Packaging: the shipping boxes all arrived in good condition, but the cardboard component boxes inside them... not so much. Most were ripped and open due to heavy components lightly surrounded with brown packing paper, just token amounts. Parts: all was accounted for minus a pair of spindle axle washers for one set, easily replaced at the local farm and ranch supply. No squawk, just an fyi. I am very pleased with your product and support, and was happy to leave a 5-star review with photos. The upgraded suspension was also a topic this past weekend at the glider port by those who regularly trailer their ships to various soaring events, some as far as a thousand miles away. My compliments to eTrailers, hope you can use my info,
-- comment by: Kelly F - 11/28/2018


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

Comments
The Timbren axle less suspension and Disk brake and disk brake controller system is still work great. will never go back to drum brakes or leaf spring axle suspension.
Quintin - 01/06/2022


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.

Comments
Really cool work!
-- Etrailer Expert Sierra K - 07/07/2021


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.

Comments
Working out just fine.
David J - 09/25/2020


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.

Comments
The Timbren Axle-Less Trailer Suspension - 4 Spindle w Brake Flange - Regular Tires - 7K Part # TASR7KS02 has a 3-year limited warranty. I will have Customer Service reach out to you.
-- Etrailer Expert Thomas M - 12/22/2021


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.



by:

Five star. shipping was slow. Product was great 14 K 14 plies under 2000 pounds independent suspension. Low fast and sassy. Yep that’s how I build them.



by:

enclosed are pics of trailer and spindle units. I was very happy with the end result,
lowering ez loader trailer 8 inches for hovercraft. the spindle units were well made,
very strong but had some weld repairs as pictures show.i could not set the needed
adjustments till I cleaned up the units with a stone and file. also please improve the
packaging . these heavy units need something better than cardboard for shipping.
they were dislodged from Styrofoam and partially poked holes thru cardboard. but
fortunately no damage there. again im happy with the installation.thank you!!!



by:

The order came in on time and the customer service at etrailer.com (Ashley) and Sean from Tmbren was outstanding. They both were very helpful in my choosing the right product for my needs. The axle less suspension's performance is absolutely superb. It vastly improves ride quality. I am using it on a teardrop camper that often goes on gravel roads and the raddling sound from the leaf axles was horrible. A couple of points to consider before you settle on the axle less suspension: keep in mind that you will lose some hight of the trailer. While you will gain clearance from the lack of the axle, the suspension will make the trailer sit lower than before.i had to lower my hitch by an inch to maintain the trailer leveled. Also it does appear to compress at higher rate than the leaf springs, which makes it softer but easier to reach it's limit. Overall this product is absolutely a must if you are looking to improve the safety and the quality of your towing.


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  • Replacement Axle Options for 91-1/2" Axle with 4" Drop for Boat Trailer
    Our standard drop axles measure 89" long and then 94" long. It's possible to use a larger hub face like the etrailer 94" Long Axle # e35GR but you need to make sure the 78-1/4" spring center measurement lines up and that the 7K weight rating isn't too much for your application. For slipper springs we don't have anything that matches 26" exactly, but we have the 5-Leaf Slipper Spring # e74SR that is made for a 7K axle and measures 26-5/8" long overall. Aside from a standard axle setup...
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  • Can Timbren Axle Less System Be Used on I Beam Trailer and with Disc Brakes
    Triple axle trailer scrub tires pretty hard around corners which can put quite a bit of lateral force on the sides of the axle assemblies. The Timbren axles just are not rated to withstand that amount of force in that direction. Installation of a Timren Axle Less like part # ASR3500S04 on I-Beam trailer frames is possible but will require you to basically box off the open end of the frame where the system will install so that it has something to install on. Disc brakes can be used with...
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  • Recommended Disc Brakes for Timbren Axle-Less Suspension Systems
    Disc brakes can be used with the Timbren Axle-Less Suspension systems, however, Timbren does not offer an axle-less suspension kit with disc brakes. If you want to use disc brakes, I recommend buying the Axle-Less Suspension System - 3,500 lbs, # ASR3500S04, which you reference, along with the Kodiak Disc Brake Kit - 3,500 lbs, # K2HR35D. Buying the Timbren Axle-Less Suspension system without the hub and buying the disc brakes separately will save you money over buying a kit that includes...
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  • Will Timbren Axle-Less Trailer Suspension System Work Well On Small Custom Utility Trailer
    With the trailer towing up to 5,000-lbs you can replace both axles on your trailer with 2 sets of the Timbren Axle-Less Trailer Suspension System, part # ASR3500S04, and they will be more than sufficient. The system is designed to make the ride much smoother regardless whether you are hauling a load or not. The progressive springs get stiffer as more weight is added but are always engaged to reduce rattle and bottoming out. The axle-less system does come with a 4-bolt brake flange installed...
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  • How Long Is a 3500-lb Axle for a 5 x 10-Foot Utility Trailer
    All of the 3500-lb-rated trailer axles that we offer are 89-inches in length from hub face to hub face and have spring seats at a 74-inch spacing. Your 3500-lb axle may be different so you'll want to measure your hub face and spring seat dimensions. All such axles are shown on the link provided for you. We offer kits with hubs or without, with electric brakes or without and even axle-less suspensions like the Timbren # ASR3500S04. The unique suspension systems do not require an axle beam...
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  • Compatibility of Timbren Axle-Less Suspension System # ASR3500S04 With Existing Trailer Brakes
    The brake flanges installed on the Timbren Axle-Less Trailer Suspension System # ASR3500S04 are standard 4-bolt types that are quite common. You can check your electric brake assemblies to confirm they use the same mounting bolt pattern. If they fit and still have plenty of life left in them then you're fine to re-install them on the Timbrens. You also need to confirm the bearings used in your existing hubs to ensure your hubs' compatibility with the spindles in this kit. If your current...
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  • Timbren Axle-Less Suspension System to Lower Trailer Deck Height
    There is a safe and effective way to lower your trailer height, Timbren 3500-lb Axle-Less Suspension Kits like # ASR3500S04. This bolt-on kit completely replaces your beam axle, leaf springs and hangers and it is designed with 4-inches of drop in the spindle height. You get lower deck height without compromising ground clearance and also a fully-independent suspension! Please check the linked video for more details on these Timbren suspension units. The easiest install method uses 2 x...
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  • Replacing Torsion Axle with Timbren Axle-Less Suspension System on Boat Trailer
    You can definitely replace the torsion axle on your trailer with a Timbren Axle-Less Trailer Suspension System like the 3,500 pound # ASR3500S04 referenced in your question. Since you will be replacing your axle, the easiest way to install this system will be to install a piece of 2-inch-square tubing through the integrated hole in the Axle-Less suspension. Then you will just need to bolt the suspension to the side of the trailer's frame with three bolts. You will just need to make sure...
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  • Measuring To Determine If Timbren Axle-Less Trailer Suspension Fits a 2022 Encore Camping Trailer
    To verify if you will be able to use the Timbren Axle-Less Trailer Suspension System # ASR3500S04 on your 2022 Encore ROG overlanding camping trailer there are some measurements you will need to take. This system will place the hub face of the wheel 6" from your trailer frame and the wheel centerline will be 1/4" below the frame with 1-3/4" vertical deflection. It appears your trailer came with a 2,500lbs axle and 15" wheels so you may be able to use the same brakes, and hubs from your...
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  • What is the Weight Capacity of Set of 4 Timbren Axle-Less Suspension Set Up As Tandem Axles
    Each paired set of the Timbren Axle-Less Suspension, like # ASR5200S04 and # ASR3500S04, can be compared as one traditional axle when trying to compare the weight capacities. The Timbren # ASR5200S04 are rated at 5,200 lbs or 2,600 per Timbren unit. If you install 4 total in a tandem axle set-up, then the weight capacity would be 10,400 lbs on the axles. The Timbren # ASR3500S04 are rated at 3,500 lbs per pair and in a tandem set-up the axle capacity will be 7,000 lbs.
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  • Does 4 inch Drop For Timbren Axle Less Systems Mean the Trailer will Sit Closer to Ground
    The Timbren Axle-Less Trailer Suspension System # ASR3500S04 has a 4 inch drop built into it so that it would sit 4 inches lower than a straight spindle setup like the part # TASR7KS01 that you referenced. The trailer will end up sitting 4 inches closer to the ground.
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  • Adding Axle-Less Suspension System on a 1979 Avion Travel Trailer With Existing Axles
    In order to potentially add a Timbren Axle-Less suspension system to your 1979 Avion travel trailer, there are few things to consider: Adding an Axle-Less system will most likely require extensive modification of your trailer and re-aligning of your current axles. The reason you will need to modify your travel trailer is because the wheel well is not large enough to accommodate a third axle. It's also necessary to re-align your axles because the center point of the axles will change from...
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  • What Replacement Dexter Axle And Hub Do I Need
    I am able to get you setup with something that will work for you. Based on my research and after speaking with a representative from Dexter I was able to get some information about your existing axle. The specs for your axle are as follows: rated for 3,500 lbs hub face length of 85" 4" drop spindle spring center 70". We do not offer a direct replacement for this axle. The Dexter axle that is closest to what you need is the Dexter Trailer Axle Beam w/ Idler Hubs - 4" Drop - E-Z Lube -...
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  • How To Lower a Trailer 3 Inches
    I am not really sure what the dealership was referring to as a 22 axle but we do have options for you to lower your trailer. The first option if you have a leaf spring axle is an over/under kit like the Dexter Trailer Springs Over-Under Conversion Kit part # K71-384-00 or part # K71-385-00 but this would only work if your leaf springs are over the axle, not under. If your leaf springs are already under the axle then the next best option would be to replace the axle with one that has a drop...
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  • Can Kodiak Disc Brakes be Added to 3,500 Pound Timbren Axle-Less Suspension System
    The Timbren axle-less system # ASR3500S04 using 10-19 seals, # RG06-050. All of the Kodiak disc brake kits for 3,500 pound axles use this same seal so you will be able to use the brakes on the Timbren axle-less system. Assuming the combined weight of the boat and trailer is under 3,500 pounds then the axle-less system will work fine. To get some idea of the weight you can take the boat and trailer (as it is now) and weigh it at a truck scale or a place that sells bulk gravel might be able...
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  • Can Disc Brakes be Added to the Timbren Axle-Less Suspension Systems
    The 3,500 lb weight capacity of the Timbren Axle-Less Trailer Suspension System, # A35RD545E, is the weight capacity for the pair, not per side. Disc brakes can be used with the Timbren Axle-Less Suspension systems, however, Timbren does not offer an axle-less suspension kit with disc brakes. If you want to use disc brakes, I recommend buying the Axle-Less Suspension System - 3,500 lbs, # ASR3500S04, and the Kodiak Disc Brake Kit - 3,500 lbs, # K2HR35D. Buying the Timbren Axle-Less Suspension...
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