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  1. Trailer Axles
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Timbren Axle-Less Trailer Suspension - Heavy Duty - 4" Lift - 4 Bolt Flange - 2,000 lbs
Timbren

Timbren Axle-Less Trailer Suspension - Heavy Duty - 4" Lift - 4 Bolt Flange - 2,000 lbs

Part Number: ASR2KHDS04
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$949.10
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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, 4" lift spindle raises deck height for additional clearance. Fits any trailer frame width. Great Prices for the best trailer axles from Timbren. Timbren Axle-Less Trailer Suspension - Heavy Duty - 4" Lift - 4 Bolt Flange - 2,000 lbs part number ASR2KHDS04 can be ordered online at etrailer.com or call 1-800-940-8924 for expert service.
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Timbren Trailer Axles - ASR2KHDS04

  • 2000 lbs
  • Universal Fit
  • Spindles Only
  • Lift - 4 Inch
  • No Hubs
  • Rubber Spring Suspension
  • Timbren
  • Standard Grade

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, 4" lift spindle raises deck height for additional clearance. 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
    • 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 regular tires
    • Tandem-axle trailers require 2 complete systems
    • Not recommended for triple-axle trailers
  • Quantity: 2 suspension units (without hubs)
  • Weight capacity: 2,000 lbs
  • Brake flange configuration: 4 bolt
  • Bolt hole diameter: 1/2"
  • Suspension travel: 1-5/8"
  • 3-Year limited warranty


Tire, Wheel, and Hub Compatibility

  • Tire size: ST205/75R15 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 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 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" 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" 13-11/16" 1" 5" 7-1/2" 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"




ASR2KHDS04 Axleless Trailer Suspension System by Timbren - 4" Lift Spindle - Without Hubs - 2,000 lbs HD

Installation Details ASR2KHDS04 Installation instructionsAlternate Instructions ASR2KHDS04 Installation instructions



Ratings & Reviews

4.6

155 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, 4" lift spindle raises deck height for additional clearance. Fits any trailer frame width.

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See what our Experts say about this Timbren Trailer Axles

  • 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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  • 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.
    view full answer...
  • Is it Just a Nut and Cotter Pin That Holds an Ilder Hub to the Spindle on a Trailer
    Hey Brad, thanks or reaching out! Yes, ultimately, it's just the castle nut and cotter pin that comes with the Timbren Kit # ASR2KHDS04 that will be keeping the idler hub # AKIHUB-545-35-EZ-K on the spindle. It sounds a little wild when you think about it, but those keep the hub pretty snug on the spindle, and there are other things like the bearings and grease seal that help make it a seamless connection for a smooth ride as well. This is also the industry standard for trailer hubs so...
    view full answer...
  • Recommended Timbren Axle-Less System on a Small Trailer
    Choosing the correct Timbren Axle-Less system will depend on a few things. First will be the weight capacity needed. Going off the 1,000 pound load you could be going up to, I am going to suggest a 2,000 pound set up. That being said, these do have larger spindles than the average 2,000 pound capacity axles. The utilize the inner bearing # L68149 and the outer bearing # L44649, which are more common on a 3,500 pound axle. So depending on the bearings you have, you may need to add the etrailer.com...
    view full answer...
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  • Dimensions for Timbren Heavy-Duty Axle-Less Trailer Suspension ASR2KHDS04
    For the Timbren Heavy-Duty Axle-Less Trailer Suspension - 4" Lift Spindle - Regular Tires - 2,000 lbs # ASR2KHDS04, I've attached a photo with all the dimensions you were seeking but the basic plate dimensions are 4-3/4 inches by 13 inches for the base plate.
    view full answer...
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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...
    view full answer...
  • Deflection for 2K Timbren Axle-Less Trailer Suspension with 4" Lift
    It sounds like you're asking about the deflection of the 2K Timbren Axle-Less Trailer Suspension # ASR2KHDS04, which Timbren has listed as 1-5/8" in the attached diagram - see the (r) label. If you are talking about something else please let me know and I'll be happy to look into it for you!
    view full answer...
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  • Replacement Bearings, Grease Seals & Brake Shoes For Timbren Axle-Less Trailer Suspension 2000LB HD
    For your Timbren Axle-Less Trailer Suspension # ASR2KHDS04 with the Timbren electric brakes and hubs you will need the Bearing Kit # BK2-100 for each hub. The bearing kit includes both bearings, races, a grease seal, cotter pin and tang washer. For your brakes shoes you will need the Replacement Shoe and Lining Kit # AKBRKR-S-10 since you mentioned they need replaced. If you ordered brakes and hubs separately from the Timbren, I would need to know the manufacturer and item numbers on...
    view full answer...
  • Is There a 2,000 lb Timbren Axle-Less Suspension System With Rise
    There is an option for one of these systems with a rise, but there isn't an axle riser kit for the Timbren Axle-Less Trailer Suspension System - 2,000 lbs # ASR2000S01. Reason for that is since these aren't a thru-axle and mount right to the frame, there isn't a way to lift that system. What you can use though, is a 2,000 lb kit that has a built-in 4 inch rise: - Timbren Heavy-Duty Axle-Less Trailer Suspension - 4" Lift Spindle - 2,000 lbs # ASR2KHDS04 This will give your trailer the...
    view full answer...
  • 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...
    view full answer...
  • Recommendation to Replace Axle on 2004 TAB Tear Trailer
    We do have a nice selection of Dexter axles currently available, however we do not currently carry the specific off-road axles that are used on the Thor TAB Outback models that you referenced in your question. Another option to consider is an axle-less system like the Timbren Heavy-Duty Axle-Less Trailer Suspension # ASR2KHDS04. This kit features a 4 inch lift and can eliminate the need for an axle, which will combine to allow for maximum ground clearance and low deck height. The system...
    view full answer...
  • 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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  • How To Lift a 1999 Aluma Utility Trailer
    I do have options for you to lift a 1999 Aluma Utility Trailer but the only bolt-on lift kits for this trailer that could potentially work are Torflex Lift Kits. That said, you would need to make sure you have a Dexter Torflex Axle which can be identified by looking at the sticker on the center of the axle tube. If you have a Dexter Torflex Axle then most likely it is a Torflex #9 therefore the Torflex Lift Kit part # K71-723-01 would be correct. If you don't have a Dexter Torflex Axle...
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  • Replacement Trailer Axle for Triton Boat Trailer
    We definitely have a great option for you, though we do not have a traditional trailer axle with those dimensions. Instead, I very strongly recommend the Timbren Axle-Less Trailer Suspension System. These are the best option because they give you an improved ride compared to a traditional through-axle. The Timbrens work independently from one another so if there is a bump on one side of the road it won't rattle your entire trailer; this is also true because the Timbrens have progressive...
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  • Will Timbren Axle-Less Suspension # ASR2KHDS04 Work with Kenda 205/65-10 Trailer Tire # AM3H400
    The Timbren Axle-Less Suspension # ASR2KHDS04 will work with the Kenda wheels/tires you referenced provided you select a hub that is compatible with both. Dexter Trailer Hub Assembly # 84545UC1-EZ that you referenced is compatible with the bearings in the Timbren system and uses the same bolt pattern as the tire/wheel you referenced, part # AM3H400 from Kenda. Another option is to use an axle with drop spindles or a torsion axle with 0 degree articulation. These methods will provide lower...
    view full answer...
  • Recommended Trailer Brakes With Parking Brake For 10 Inch 5-On-5 Bolt Pattern Drums
    For your custom trailer build, I recommend using the Timbren Heavy-Duty Axle-Less Trailer Suspension - 4" Lift Spindle - Regular Tires - 2,000 lbs # ASR2KHDS04 or the # ASR2KHDS03 for wide tires. Either of these options will work perfectly with the Dexter Electric Trailer Brake Assembly with Parking Brake - 10" - Left Hand - 3,500 lbs # K23-086-00 and Right Hand # K23-087-00. The parking brake capability will also require the Titan Breakaway and Parking Kit for Drum Brakes # T2385200. For...
    view full answer...
  • 2012 T@B 320S Axle Replacement Recommendation
    For your application I recommend checking out the Timbren Axle-Less Trailer Suspension # ASR2KHDS04 which is rated for 2,000 lbs and comes with a 4" lift. This is a great way to upgrade and replace other suspension systems and while it isn't an exact "torsion" axle, it does come with it's own rubber springs so you won't be installing hangers and leaf springs like you would on standard axles.
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  • Is There a Lift Kit for a 2010 Aliner Ranger Trailer
    I do have an option for you but the 2010 Aliner Ranger Trailers all use AL-KO axles and there is not a bolt-on lift kit for these. The only option we can provide to lift the trailer would be to use the Timbren Heavy-Duty Axle-Less Trailer Suspension part # ASR2KHDS04 which has a built-in 4" lift. It also has independent operation and will work with any existing hubs or hubs/drums and brakes.
    view full answer...
  • Timbren Heavy-Duty Axle-Less Trailer Suspension with 4 Inch Lift for a 1,000 Lb Trailer
    What you are seeing is correct. The lowest weight rating we offer the Timbren Heavy-Duty Axle-Less Trailer Suspension with 4" Lift in is 2,000 lbs using part # ASR2KHDS04. The 2,000K system would still work for you though as you have mentioned, may be a little stiff. However, this is your only option for an axle-less suspension system that offers 4" of lift.
    view full answer...
  • Recommended Timbren Axle-Less Suspension With Lift For Small Off-Road Trailer
    Since you are looking to maintain clearance on your off-road trailer, you'll want to go with a system that has lift. So what I recommend is using the following: - Timbren Axle-Less Trailer Suspension - 4" Lift # ASR2KHDS04 This is rated for 2,000 lbs but will work just fine with your small trailer, and allow you the clearance you are looking for. Then for hubs that fit and have a 5 on 4-1/2" bolt pattern you will need the Dexter Trailer Idler Hub Assembly # 84545UC1-EZ.
    view full answer...
  • Lift Kit For Avan Aliner With Torsion Axles
    For a torsion axle such as your Avan Aliner we have kits available that will give you some extra clearance. The Avan Aliner is a single axle trailer, so we have two kits that will work for you. Torsion axles must be side-mounted and not top mounted and can not be used with Torflex axles with 3 inch high profiles. The first one I recommend is The Torflex Lift Kit - Single Axle - 2-5/8 inch Lift # K71-707-01 which is compatible with #10 Torflex axles with 2,300 to 4,000 pound capacities....
    view full answer...
  • Trailer Axle Option For M416 Trailer With & Without Electric Brakes
    The only option for an axle for your M416 trailer is what is called an axle-less system, as there aren't axles in that particular length. You can get these with either idler hubs (for without electric brakes) or hub and drums if you choose to use electric brakes. They are available in either a straight spindle or with a 4 inch lift if you want to add some extra height: - Timbren Axle-Less Trailer Suspension System - 2,000 lbs # ASR2000S02 - Timbren Axle-Less Trailer Suspension - 4" Lift...
    view full answer...
  • How To Lift an Old 1977 Scamp Camper with Torsion Axle
    We do have lift kits available for torsion axles but they are designed for specific Dexter Torflex Axles. For example, the Torflex Lift Kit part # K71-707-01 is designed for a Dexter #10 Torflex Axle which has a 2,300 to 4,000 lb weight capacity. If you do not have a Dexter Torflex Axle then you still may be able to use the Torflex Lift Kit but you would need to measure the distance between the mounting holes that attach the axle to the frame. If they are 8" apart on center then the Torflex...
    view full answer...
  • What Torsion Axle Lift Kit Fits A 1999 Avan Aliner
    Hello Tom, thanks for reaching out. I can certainly point you in the right direction, but I will need a bit more information on your trailer in order to recommend the correct lift kit. Specifically I will need to know the weight capacity of your axle. This info is not available to me online, so if you can look under your trailer and find the axle tag that shows the weight capacity that will help narrow down the correct kit. For example, the Torflex Lift Kit # K71-707-01 will fit the #10...
    view full answer...


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Info for this part was:

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