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  1. Trailer Axles
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  4. Universal Fit
  5. Spindles Only
  6. No Drop or Lift
Timbren Axle-Less Trailer Suspension - Standard Duty - No Drop - 4 Bolt Flange - 3,500 lbs
Timbren

Timbren Axle-Less Trailer Suspension - Standard Duty - No Drop - 4 Bolt Flange - 3,500 lbs

Part Number: ASR3500S05
$1,053.14
Trailer Axles
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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 keeps your deck height the same. Fits any trailer frame width. Great Prices for the best trailer axles from Timbren. Timbren Axle-Less Trailer Suspension - Standard Duty - No Drop - 4 Bolt Flange - 3,500 lbs part number ASR3500S05 can be ordered online at etrailer.com or call 1-800-940-8924 for expert service.
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Timbren Trailer Axles - ASR3500S05

  • 3500 lbs
  • Universal Fit
  • Spindles Only
  • No Drop or Lift
  • No Hubs
  • Rubber Spring Suspension
  • Timbren
  • EZ 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 keeps your deck height the same. 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
  • 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: 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: 15" 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 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 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" 15" 1" 5" 3-13/16" 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"




ASR3500S05 Axleless Trailer Suspension System by Timbren - Standard Height Spindle - Without Hubs - 3,500 lbs

Installation Details ASR3500S05 Installation instructionsAlternate Instructions ASR3500S05 Installation instructions




Customer Reviews

Timbren Axle-Less Trailer Suspension - Standard Duty - No Drop - 4 Bolt Flange - 3,500 lbs - ASR3500S05

Average Customer Rating:  4.6 out of 5 stars   (323 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 keeps your deck height the same. Fits any trailer frame width.

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See what our Experts say about this Timbren Trailer Axles

  • Recommended Tire Size Compatible with Timbren HD 3500-lbs Axle-less Suspension System
    I'll start off by saying that wheels and tires do not come with hubs, and what hubs you'll be able to use depend on the spindles on the axles, and whether or not you'll want brakes on the trailer or not. If you're going to be using the Timbren # TASR35HDS07, you'll need hubs that have # 25580 inner bearing and # 15123 outer bearings, like the # AKHD-655-6-EZ-K for a hub and drum assembly or # AKIHUB-655-6-EZ-K for idler hubs. If you're going with the hub and drum so you can add brakes,...
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  • Recommended Timbren Axle-Less Suspension To Replace 3500lb Axle On 2019 Forest River R-Pod 179
    The Timbren Axle-Less systems are all universal, and since they bolt directly to the frame of the trailer can be used on any trailer including your 2019 Forest River R-Pod 179. Based on the information I can find on your R-Pod it appears that you are correct in thinking the OEM is a 3500lb axle. For a 3500lb replacement I recommend the Timbren Axle-Less Trailer Suspension System - 3,500 lbs # ASR3500S05. This will allow you to reuse your current braking assemblies as it has the standard...
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  • How Far Does the Dexter Hub # 84556UC3 Center Bore Extend From the Mounting Face of Hub?
    I went out to the warehouse to measure the Trailer Hub and Drum Assembly - 3,500-lb Axles - 5 on 5 # 84556UC3 and the center bore will stick out 1-3/4 inches from the hub face and the dust cap will add 7/8 inch. These hubs will work well on the Dexter Trailer Axle Beam with EZ-Lube Spindles - 89" Long - 3,500 lbs # T3584F-EZ-8974. For your brake assemblies, I recommend the Electric Trailer Brake Kit - Self-Adjusting - 10" - Left and Right Hand Assemblies - 3,500 lbs # AKEBRK-35-SA if...
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  • Parts Needed to Add Brakes to 2018 Carry-On Trailer
    Based on what I have found, the 3K7258 axle is a standard 3,500 lb axle. To add brakes to your Carry-On trailer you will need the following: -Hub and Drum Assemblies: Easy Grease Trailer Hub and Drum Assembly for 3.5K Axles # AKHD-545-35-EZ-K -Brake Assemblies: Electric Trailer Brake Kit - Self-Adjusting # AKEBRK-35-SA -7-Way Wiring: Hopkins 7-Way Molded Trailer Wire Connector # HM20048 (If you want a junction box use # 3375601101) -Breakaway Kit: Hopkins Engager Push-To-Test Trailer...
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  • Replacement Axle Spindle for Dexter P21-SLR with 76 Inch Spring Seats and 44649 and 68149 Bearings
    I reached out to Dexter and they no longer make that axle. I can confirm based on the bearing sizes you gave that you have a 3,500 lb capacity. If you determine you just want to replace the hub, I recommend the Trailer Hub and Drum Assembly for 3,500-lb Axles - 10" Diameter - 5 on 4-1/2 # 84546UC3 or # AKHD-545-35-EZ-K if you have the grease zerk integrated in the spindle. Since we can't match the spring seat to spring seat dimensions if you want to replace your axle I recommend using...
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  • Recommended 3500lb Axles To Replace Damaged Axles On Trailer
    We do not sell Bendron Tito's axles, and I was not able to find any information about them online. Are you sure that is the correct name for the axle? If you can send me the specs of your axle I would be happy to see if we have another brand of axle that would work for you.
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  • Best Trailer Axles To Use For A Spring Center To Spring Center Measurement Of 74"
    I do have trailer axles similar to what you are looking for in our Timbren Axle-Less Suspension Systems however, we do not offer torsion axles at this time. In order to recommend a proper replacement axle for your setup, I would need to know the weight capacity of the axle you are seeking. For a Timbren Axle-Less Suspension System, you would use part # ASR2000S02 for 2,000 lb. axles, part # ASR3500S05 for 3,500 lb. axles, or part # ASR5200S01 for 5,200 lb. axles. I have attached a review...
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  • Recommended Axle-Less System for a 2016 Forest River R-Pod 179
    Stephen, from what I can gather your Forest River R-Pod 179 has 3,500 lb axles, so the Timbren Axle-Less Trailer Suspension # ASR3500S05 would be the correct one. This would also allow you to reuse your braking assemblies because it'll use the same bearing combination your current axle uses.
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  • Replacing the Axle on a Gooseneck Horse Trailer
    An axle flip kit like part # K71-384-00 will raise the trailer the diameter of the axle plus the height of the leaf spring pack. I do have options for you but rotating the axle to where the bend faces the other direction is not one of them. The bend in the axle will actually straighten out once a load is placed on the trailer and if this was reversed, the axle would lose capacity. Now from this point forward you have two options both of which entail replacing the axle. Since your current...
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  • Recommended Timbren Axle-Less Suspension System for 2017 Forest River Surveyor
    Installing the Timbren Axle-Less Trailer Suspension System on your trailer is a great idea. I recommend sticking with a 3,500 pound system to match what you currently have. While the axle is typically the primary factor when it comes to determining a trailer's overall capacity, it is not the only component that contributes to its limit. The hubs, wheels, frame itself, etc will all work to establish the trailer's listed limits. This simply means that replacing the 3,500 pound axles on your...
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  • Replacement Timbren Axle-Less System and Hydraulic Brake Assembly for 3,500 lb Axles on Boat Trailer
    I would love to help you upgrade your suspension components! I am guessing that you have 3,500 lb axles on your trailer but if you could verify that it would help me to make sure that I recommend the correct parts for you. Also, are you looking to add brakes to both axles or just keep them on one pair? You would get more braking power and less wear with brakes on all of the axles but if you only want them on one then that will also play into the parts.
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  • Determining if Installing Timbren Axle-Less System Will Change Trailer Ride Height
    The Timbren Axle-Less Systems come in a variety of different spindle designs that may allow you to increase, decrease, or simply maintain your trailer's current ride height. The Timbren 3,500 Pound # ASR3500S04 that you were looking at features 4 inch drop spindles which would lower the ground clearance on the trailer. It's hard to say how much this would differ from your current setup since it depends on exactly what kind of torsion axles you have, but I can tell you that this system...
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  • How to Find Replacement Hub for Mobile Home Axle
    In order to find a replacement hub for your axle you will need to know the current bolt pattern, as well as the bearings and axle capacity. For example, the Trailer Idler Hub Assembly # 84655UC1 you looked at has a 6 on 5-1/2 bolt pattern and is for a 3,500 lb axle. It uses a # L68149 inner and # L44649 outer bearing. To find out which bearings fit your spindle you will need to remove your current hubs. You can look for part numbers on your existing bearings or measure using a digital...
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  • Timbren 2,000LB & 3,500LB Axle-Less Suspension Systems With #84 Spindle and 4 Bolt Brake Flanges
    Here is a list of the Timbren Axle-Less Trailer Suspensions which have the #84 size spindle with a 4 bolt brake flange. 3,500LB Systems -No Drop # ASR3500S05 -4" Lift # ASR3500S06 -4" Drop # ASR3500S04 2,000LB Systems -No Drop # ASR2KHDS01 -4" Lift # ASR2KHDS04 -4" Drop # ASR2KHDS05 -No Drop, Long Spindle # ASR2KHDS02 -4" Lift, Long Spindle # ASR2KHDS03 -4" Drop, Long Spindle # ASR2KHDS09 Please let me know if you need any help selecting the brakes or hubs needed for these.
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  • How to Determine if Hub Will Fit Timbren Axle-Less System
    Hey David, thanks for reaching out! It sounds like you have drums for a 3,500 lb axle so in that case, yes, the Timbren Axle-Less Trailer Suspension # ASR3500S05 will work for your application. To verify this on your end, your hub needs to use the following bearings and have these grease seal dimensions: - Inner Bearing: L68149 - Outer Bearing: L44649 - Grease Seal: ID 1.719" and OD 2.565" If you have something else please let me know and I'll be happy to help you find what you need!
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  • How to Find Replacement Axle for Hurricane HUR 2178 Boat Trailer
    Finding a replacement axle will require measuring your current axle. Specifically, the hub face to hub face measurement. I would say based on the GVWR it is a 3,500 lb axle. It could possibly be a 3,000 lb axle depending on what they figured for tongue weight, but that would be obsolete so you're looking at 3,500 lbs either way. We only have two length options for 3,500 lb axles so I'll list them below. If you switch from a 3k axle you will also need new hubs. You can choose from the following:...
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  • Replacement Axle Options For Dexter TORFLEX Torsion Axles
    While we do not carry Dexter TORFLEX axle we do have the Timbren Axle-Less options. Here is a list of some of the basic options without hubs. Timbren Axle-Less Trailer Suspension System - Spindle Only - Regular Tires - 1,200 lbs # ASR1200S02 Timbren Axle-Less Trailer Suspension System - Spindle Only - Regular Tires - 2,000 lbs # ASR2000S01 Timbren Axle-Less Trailer Suspension System - Straight Spindle Only - 3,500 lbs # ASR3500S05 These use Timbren's AEON progressive-rate main springs...
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  • Replacement Axle Needed for 3,500 lb Dexter Axle
    Thank you for the information! According to my contact at Dexter Axle you have a 3,500 lb axle with a hub-face measurement of 96.60". We have the Dexter Trailer Axle Beam with E-Z Lube Spindles # 7359765 which has a hub-face measurement of 95" but you'll need to check and see if the spring-center measurement of 80" will work for your trailer (see attached photo). If not you can have a qualified welder cut off and weld on new spring seats with part # TRSS238. This axle is also available...
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  • Availability of 88" Long Axle With 76" Spring Center Measurement
    Hello Kal; the closest thing we have is 89" hub face with a 74" spring center. The axle would stick out an extra 1/2" on either side and you would need to move the spring seats. These are 3,500 lb, 5,200 lb, and 6,000 lb axles which you can find in the link below. If you have a different capacity, or would rather not have the extra length and move the spring seats, the best I can offer is the universal Timbren Axle-Less Trailer Suspension like the # ASR3500S05. These range from 1,200...
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  • Is there a Replacement Dexter Axle that Fits in Place of a 3,500 Pound Lippert Axle
    Is your axle actually bent or are you just seeing the bow that is supposed to be in the axle? A beam style trailer axle has a bow in it so the center of the axle is higher than either of the ends. When weight is on the axle it straightens out. This is part of how it gets its capacity. So if that is what you are seeing it is normal. If it is bent from damage or was overloaded then you would definitely want to replace the axle. To find the correct replacement there are some measurements...
    view full answer...
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  • Availability of 86-1/2" Long 3,500 lb Replacement Axle
    Hi Jeff; I do have a solution, but we do not have a replacement axle that matches those measurements. What I can offer is the Timbren Axle-Less Trailer Suspension # ASR3500S05. This will replace your axle and upgrade you to have an independent suspension. It uses the same spindle so your existing hubs, wheels, and brakes will all fit. If you have a tandem axle trailer you will need to replace both axles.
    view full answer...
  • Will Hubs and Drums From 3,500 Pound Axle Fit 5,200 Pound Axle
    Although you could replace your existing axle with the Dexter Trailer Axle Beam # 8327816, you would not be able to use your existing hubs and drums with this axle. The wheels could still be used as long as the new hubs match the bolt pattern. Since the spring seat measurement is 71-1/2" you would also need to cut off the spring seats and put on # TRSS300 to match your 68-1/2" measurement. If you want to use your existing hubs and drums, I recommend the Timbren Axle-Less Trailer Suspension...
    view full answer...
  • Axle Alignment Off and Replacing Axle w/ a Timbren Axle-less System
    If your frame isn't twisted or bent you will need to move your axle hanger. Another option is to replace your trailer's axle with an axle-less system like the Timbren Axle-Less Trailer Suspension System - Straight Spindle Only item # ASR3500S05 for 3,500 lbs axles. Or the Timbren Axle-Less Suspension - Spindle Only - Regular Tires item # ASR5200S01 for 5,200 lbs axles. If you're interested in this option, send me an email with what model of trailer you have and what type of hubs and lug...
    view full answer...
  • 6 on 5-1/2 inch Bolt Pattern Hub Drum Recommendation for a Timbren Axleless Setup
    I believe I have a solution for you, but there are not hubs available that have a 6 on 4-1/2 inch bolt pattern. I believe you may have meant to type 6 on 5-1/2 inch. Which I can help if so. For a Timbren System part # ASR3500S05 would work well and then for a 6 on 5-1/2 inch hub to install on the spindle you would want part # 84656UC3.
    view full answer...


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