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  1. Trailer Axles
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  3. 2200 lbs
  4. Universal Fit
  5. Spindles Only
  6. Lift - 4 Inch
Timbren Axle-Less Trailer Suspension - Heavy Duty - Long Spindle w/ 4" Lift - 4 Bolt - 2.2K
Timbren

Timbren Axle-Less Trailer Suspension - Heavy Duty - Long Spindle w/ 4" Lift - 4 Bolt - 2.2K

Part Number: ASR1THDS03
In Stock
$1,016.95
Trailer Axles
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Designed for use with wide, off-road tires, this setup gives you more clearance and a smooth ride. Built-in shock absorption limits rattle and bottoming out. E-Z Lube, long spindle with 4" lift raises deck height. Fits any trailer frame width. Great Prices for the best trailer axles from Timbren. Timbren Axle-Less Trailer Suspension - Heavy Duty - Long Spindle w/ 4" Lift - 4 Bolt - 2.2K part number ASR1THDS03 can be ordered online at etrailer.com or call 1-800-940-8924 for expert service.
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Timbren Trailer Axles - ASR1THDS03

  • 2200 lbs
  • Universal Fit
  • Spindles Only
  • Lift - 4 Inch
  • No Hubs
  • Rubber Spring Suspension
  • Standard Grade
  • Timbren

Designed for use with wide, off-road tires, this setup gives you more clearance and a smooth ride. Built-in shock absorption limits rattle and bottoming out. E-Z Lube, long spindle with 4" lift raises deck height. 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 overlanding or off-road adventures
    • Long spindle accepts wide, off-road trailer tires
    • Robust, heavy-gauge steel construction is built to handle abuse
    • Black powder coat resists rust and corrosion
  • Raises trailer deck height for maximum ground clearance
    • 4" Lift spindle is built in
  • Allows for simple bearing maintenance with built-in grease zerks


Specs:

  • Application: single- and tandem-axle trailers that use wide, off-road tires
    • Tandem-axle trailers require 2 complete systems
    • Not recommended for triple-axle trailers
  • Quantity: 2 suspension units (without hubs)
  • Weight capacity: 2,200 lbs
  • Brake flange configuration: 4 bolt
  • Bolt hole diameter: 1/2"
  • Suspension travel: 3-3/8"
  • 3-Year limited warranty


Tire, Wheel, and Hub Compatibility

  • Tire size: 33 x 10.5 x 15 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 terrain. With 2 independently operating units, you'll get better handling when making tight turns. And because this system eliminates your axle and has lift spindles built in, you'll get maximum ground 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. This may make it difficult to navigate off-road terrain.


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 want to go off-road. The lift spindles on this setup will also raise your deck height, making navigating off-road terrain 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 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" lift 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" 17-11/16" 1" 5" 9-5/8" 4-1/4"


Axle-Less dimensions top view

G H I J K L
5-5/8" 8-1/2" 4-3/4" 1-3/4" 3-3/8" 3-11/16"




ASR1THDS03 Axleless Trailer Suspension System by Timbren for Off-Road Tires - 4" Lift Long Spindle - Without Hubs - 1 Ton HD

Installation Details ASR1THDS03 Installation instructionsAlternate Instructions ASR1THDS03 Installation instructions



Ratings & Reviews

4.6

164 reviews
Designed for use with wide, off-road tires, this setup gives you more clearance and a smooth ride. Built-in shock absorption limits rattle and bottoming out. E-Z Lube, long spindle with 4" lift raises deck height. Fits any trailer frame width.

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See what our Experts say about this Timbren Trailer Axles

  • What Hubs And Parking Brake Ready BRakes Go With Timbren 2,200 lb Axle-Less Suspension?
    Hello Casey, thanks for reaching out. It sounds like the 2,200 lb Timbren Axle-Less Trailer Suspension # ASR1THDS03 will be sufficient for your build. Even if the GVWR is 1,500 lbs and your water tank is full, you would still be safely under 2,200 lbs, so the suspension would work well for that. If you want to set them up with parking brake ready electric brakes, you can use the following: - Dexter Electric Trailer Brakes - Parking Brake Ready - 10" - Left/Right Hand Assemblies - 3.5K...
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  • Experiencing Rough Ride with 2,200 lb Timbren Axle-Less Suspension Installed on 1,300 lb Tear Drop
    I just spoke with my contact at Timbren who said that if you are towing your trailer dry right now at the 1,300 lbs then that is why it is a little rough. Since the Timbren Axle-Less Trailer Suspension System # ASR1THDS03 is rated for 2,200 lbs you need to put more weight in your trailer. Once you have some more load in your trailer you will start to experience the performance of the AEON progressive-rate main springs.
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  • How To Use Jeep Wheels With Timbren Axle-Less Trailer Suspension System
    In order to use Jeep wheels with the Timbren Axle-Less Trailer Suspension System you'll need to go with the part # ASR1THDS03 which has a 2,200 lb weight capacity. This can then be used with the Trailer Idler Hub Assembly part # AKIHUB-550-35-EZ-K or the Trailer Hub and Drum Assembly part # AKHD-550-35-EZ-K and Electric Trailer Brake Kit part # AKEBRK-35-SA if you need brakes. This will give you a 5 on 5" bolt pattern to use the Jeep wheels as well as the lift and offset needed for clearance.
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  • Timbren Axle-Less Suspension System Compatible with Jeep for Matching Trailer
    For the Timbren Axle-Less kit compatible with the bolt pattern of 5 on 5 like a Jeep, you would need the 2,200 lb capacity # ASR1THDS03. The spindles on the Timbren system are a little larger than their thru-axle counterparts, so the 3,500 lbs # ASR3500S06 will only fit larger hubs that won't have the bolt pattern you seek. Using # ASR1THDS03, you can then use the Trailer Idler Hub Assembly for 3,500-lb E-Z Lube Axles - 5 on 5 # AKIHUB-550-35-EZ-K or the Trailer Hub and Drum Assembly...
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  • How To Determine Correct Axle Placement For Single Axle Trailer
    Hey John, thanks for reaching out. The recommended placement of an axle on a single axle trailer will be determined by tongue weight. There are two formulas to determine axle placement. One formula is for trailers with a tongue weight (TW) greater than 10% of the gross trailer weight (GTW) and the other formula is for trailers with a TW less than 10% of the GTW. You can find each of these formulas pictured below. Moving the axles rearward will increase the tongue weight of the trailer,...
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  • What's The Difference Between The 2k And 2.2k Capacity Timbren Axle-Less Systems
    Hey Jim, The difference is simply just the jounce spring that's built into the two systems. The # ASR1THDS03 is going to be have a stiffer spring built into it to accommodate the extra 200lb of capacity that it has over the # ASR2KHDS03. These springs aren't really available separately but you could try reaching out to Timbren and see if they'll send you the 2.2k springs so you're not having to replace the entire system.
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  • Recommended Trailer Axle with 56-1/2 Inch Spring Center Measurement
    The closest standard trailer axle we currently have available to the 56-1/2 inch spring center length you are needing is one like the Dexter Trailer Idler Axle w/ Hubs # 20545I-EZ-72-10 that has a 58 inch spring-center-to-spring-center measurement. Another option you may want to consider is an axle-less suspension system like the Timbren # ASR1THDS03. This system will provide a smooth and quiet ride and can eliminate the need for an axle. The suspension units replace your existing axle...
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  • Replacement Axle for Dexter Torsion 2,200 lb Axle on 2005 Blizzard 10T Snowmobile Trailer
    For your Blizzard 10T Snowmobile trailer, the 2,200 lb GVWR with the Dexter torsion axle means we do not have a direct replacement. We do however have a better option that will work for you whether you have 78 or 79 inch hub face to hub face measurements. It is the Timbren Axle-Less trailer suspension system which is not dependent on a specific width measurement for fit and still includes the suspension so there are not leaf springs so it is somewhat like a torsion axle in that area. You...
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  • Best Replacement Axle Option for Military Trailer Using Off-Road Tires
    There are two options to replace the axle on a military trailer, you can have a custom axle made or you can go with an axle-less kit. The custom axle option would get pricey and you really don't have the ability to use larger tires without compensating for this when having the axle built. This option keep in mind would require new hangers to be welded as well as leaf springs. Therefore, the best option is going to be the Timbren Axle-Less Trailer Suspension System which is also the one...
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  • Jeep Wheel Compatibility with Timbren Axle-Less Trailer Suspension System
    Jeep wheels have the 5 on 5 inch bolt pattern and we do have hubs that fit the Axle-Less Systems and your Jeep wheels. It is recommended to use trailer wheels with trailer hubs because of the zero offset and tire design, but people have been using Jeep wheels especially for off-road trailers for years so we know they can work. We only have a couple compatibles option for that size hub. You will want the Timbren Axle-Less Trailer Suspension System - 4" Lift Spindle w/Flange - Off-Road...
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  • Idler Hub Assembly with 6 on 5-1/2 Bolt Pattern for Timbren Axle-Less Trailer Suspension System
    To fit the Provider ST225/75R15 Radial Tire w 15" Steel Mod Wheel # TA37VR to the Timbren Axle-Less Trailer Suspension System - 4" Lift Spindle # ASR3500S06 you need the Trailer Idler Hub Assembly # AKIHUB-655-35-EZ-K. This comes with bearings, seals, EZ Lube grease cap, and lug nuts. Please note this is sold in a quantity of 1 so you need to order 2 for the Timbren kit you are installing. I have attached some videos for you to check out as well.
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  • Recommended Axle To Use Off-Road Jeep Wheels/Tire On Trailer
    I have the perfect axle and hub setup for you to use off-road wheel and tires on a trailer, the Timbren Axle-Less Trailer Suspension System part # ASR1THDS03 with the Trailer Idler Hub Assembly part # AKIHUB-550-35-EZ-K. This setup has an integrated lift which you'll want if taking the trailer off-road, an extended spindle arm so you can clear larger tires, and it will come with hubs which have the 5 on 5" bolt pattern. The only advice I have would be to mount the axle and wheels/tires...
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  • Recommended Hubs and Brakes to Build Offroad Trailer with Timbren Axle-Less Trailer Suspension
    Generally, it is not recommended to use automotive tires on a trailer application, with the only exception being LT tires. Based on the information I was able to find, it looks like you're in luck because that's exactly what your BFGoodrich Mud Terrain T/A KM tires are so you should have no problem using those to build your off-road trailer. That being said, the 5 on 5 bolt pattern poses a problem since there are no hub/drum assemblies compatible with the spindles used on the Timbren Axle-Less...
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  • 2,200 lb Axle Replacement System for Triton Snowmobile Trialer
    We have an option to replace the torsion axle on your 1996 Triton snowmobile trailer, but do not carry any torsion axles. Instead, the best option we have is a Timbren Axle-Less trailer suspension system which are simply bolted or welded so you do not have to worry about finding an axle that meets any specific measurements. They also offer you an improved ride compared to a traditional through-axle because the Timbrens work independently so if there is a bump on one side of the road it...
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  • Comparing Timbren Axle-Less 2K Trailer Suspension Systems with 4" Lift
    Great question! The Timbren Axle-Less Trailer Suspension System # ASR2KHDS04 has a standard size spindle which is why it is for regular tires. The Timbren Systems # ASR2KHDS03 and # ASR1THDS03 have longer spindles which can accommodate wider tires and the only difference between them is the slightly higher weight rating of the part # ASR1THDS03 (also known as the 1 Tonne by Timbren). All 3 kits are great options for off-road use because of the 4" lift, so it really boils down to what...
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  • Can Trailer Spindle Be Mounted Directly to Trailer Frame Instead of Axle
    I do have a potential solution for you, but a standard trailer spindle like the 2,500 pound # TRU27FR you referenced should not be attached directly to the frame. This would eliminate any kind of suspension system so the trailer's ride would be extremely rough, possibly to the point of damaging the spindle or wheel/hub assemblies. Standard trailer spindles like this also just aren't designed to be used in this manner, so it's not something that has been tested in an any way by the manufacturer....
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  • Timbren Axle-Less Suspension to Fit on a Coleman Pop-Up Camper
    The Timbren Axle-Less system would be a great option to replace your current axle on your Coleman pop-up trailer. The Timbren system that I like for your trailer is # ASR2KHDS04. This suspension has a 2000 lbs weight capacity and includes 4 inch lift spindles that will increase you ground clearance on your trailer. Unlike the Timbren system, # ASR1THDS03, that you referenced, this suspension is designed to be used with regular trailer tires. This suspension axle system will have a smoother...
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    Image 1 for
  • Hubs with 5 on 5 Bolt Pattern that Will Fit a Timbren Axle-Less Suspension System
    There are Timbren axle-less suspension systems that do not come with hubs so that you could add your own such as # AKIHUB-550-35-EZ-K. But the hubs with 5 on 5 bolt patterns that would also fit a Timbren system only accept up to 15 inch wheels. The other issue is that vehicle wheels are not meant to be used on trailers and often have an offset (mounting surface of wheel not in the dead center of the wheel) whereas most trailers take wheels with a zero offset. With that said the hub listed...
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  • Recommended Hubs to Match Jeep Wheels on a Trailer
    You'll need to match the hubs up to the size of the spindle on your trailer's axle. You will need to know what spindle you have on your trailer. In order to do that you can either get the inner and outer bearing numbers from the bearings on one of your hubs or use a dial or digital caliper to get exact measurements of the spindle. The measurements needed are the parts of the spindle where the bearings ride. I have attached a diagram below to show you, We have ran across your set up before...
    view full answer...
    Image 1 for
  • Adding Trailer Brakes to a Timbren Axle-Less Trailer Suspension System
    Yes, it is possible to add brakes Timren Axel-Less Trailer Suspension System. The Timbren Axle-Less Trailer Suspension System - 4" Lift Spindle w/Flange - Off-Road Tires - 2.2K, # ASR1THDS03, that you were looking at has the brake flange mounted, so it is ready to add brake assembly and hubs to. I'd recommend getting the Electric Trailer Brake Kit - Self-Adjusting - 10" - Left and Right Hand Assemblies - 3,500 lbs # AKEBRK-35-SA . You would then pair these with the Trailer Hub and...
    view full answer...
  • Recommended Axle Setup For a 5 X 8 Off-Road Trailer With Jeep Wheels
    I recommend using the Timbren Axle-Less Trailer Suspension System # ASR1THDS03. This system has a upgraded spindle designed for additional strength. It includes a 4" lift spindle for additional ground clearance and will place your hub face for your Jeep wheels 8-1/2" from the frame and the axle centerline 9-5/8" below the bottom of the frame. If this is not far away enough for your Jeep wheels and tires you will need to then use some wheel spacers to push the wheels out further. The Electric...
    view full answer...
  • How To Use Large Off-Road Tires on a 4x6 Utility Trailer
    The best option we have for you is an axle-less kit designed for larger off road tires such as the Timbren Axle-Less Trailer Suspension System part # ASR1THDS03 with the Trailer Idler Hub Assembly for 3,500-lb E-Z Lube Axles part # AKIHUB-545-35-EZ-K. This system will provide you with a 2,200 lb weight capacity, 4" lift for increased ground clearance, and a 5 on 4-1/2" bolt pattern. The reason that this kit is the best option for you is because it will provide 8-1/2" from the hub face...
    view full answer...
    Image 1 for
  • Deflection of Timbren Axle-Less Trailer Suspension for Off-Road Tires ASR1THDS03
    Timbren Axle-Less Trailer Suspension for Off-Road Tires # ASR1THDS03 has maximum deflection of 3-3/8-inches when used within its rated weight capacity. This is noted in the linked diagram. For off-road use the improved ground clearance from completely eliminating the axle beam, leaf springs and shocks will be a big advantage, especially at faster speeds when your tires are more likely to kick up rocks. For your off-road application you'll definitely want to use 2 x 2 square steel tubing...
    view full answer...
    Image 1 for
  • Is There a Trailer Spacer Lift for Torsion Axle with 6.5" Apart Holes
    I do have an option for you but I was not able to find a spacer type torsion axle lift kit with bolts 6-1/2" apart center to center. That said, we do offer Timbren Axle-Less Trailer Suspension Systems which offer integrated lifts like the Timbren Axle-Less Trailer Suspension System part # ASR1THDS03. I have attached our full selection below if you need another capacity or tire/brake option.
    view full answer...


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