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  1. Trailer Axles
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  5. Spindles Only
  6. Lift - 4 Inch
Timbren Axle-Less Trailer Suspension - Heavy Duty - Long Spindle w/ 4" Lift - 4 Bolt - 2K
Timbren

Timbren Axle-Less Trailer Suspension - Heavy Duty - Long Spindle w/ 4" Lift - 4 Bolt - 2K

Part Number: ASR2KHDS03
In Stock
$948.49
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 - 2K part number ASR2KHDS03 can be ordered online at etrailer.com or call 1-800-940-8924 for expert service.
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Timbren Trailer Axles - ASR2KHDS03

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

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: 2,000 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: 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 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" 8-1/2" 4-3/4" 1-3/4" 3-3/8" 3-11/16"




ASR2KHDS03 Axleless Trailer Suspension System by Timbren for Off-Road Tires - 4" Lift Long Spindle - Without Hubs - 2,000 lbs HD

Installation Details ASR2KHDS03 Installation instructionsAlternate Instructions ASR2KHDS03 Installation instructions



Ratings & Reviews

4.6

159 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

  • Availability of Metric ATV Hub Assembly With 4/110 Millimeter Lug Pattern
    Your best option for constructing a trailer may be to go for a complete axle kit that includes the axle beam, spindles, hubs with bearings, and seals etc. We offer kits and separate components in various bolt patterns. To help you identify your preferred bolt pattern I have linked an article at right. We also offer trailer wheels with pre-mounted tires to fit the axle kits we offer; a link is included for these as well. Bear in mind that the tires on your ATV may not be rated high enough...
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  • Recommended Timbren Axle-Less System with 5 on 5 Bolt Pattern Hubs for Overland Trailer
    I have a solution for you, and it sounds like you're looking for a Timbren system that can be used with 5 on 5 hubs that would allow you to use Jeep wheels. Unfortunately the Timbren # ASR1200S03 spindle does not have any hubs with that bolt pattern, so instead you would need to use the Timbren Heavy-Duty Axle-Less Trailer Suspension - Straight Spindle - Regular Tires - 2,000 lbs # ASR2KHDS01. If you're looking for a lifted system, the Timbren Heavy-Duty Axle-Less Trailer Suspension - 4"...
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  • Trailer Axle Solution for Military Trailer with Jeep Wrangler Bolt Pattern
    For a hub that has a 5 on 5 inch bolt pattern to fit the spindles of the Timbren axle less kit part # ASR2KHDS03 which is great for applications like yours you would want the Trailer Hub part # 84550BX that you mentioned as well. This hub includes the bearings that the Timbren you referenced is designed to fit. This setup has a 4 inch lift and the hubs have the 5 on 5 inch Jeep bolt pattern.
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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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  • Axle Replacement Solution for Pop Up Trailer to Use for Off-Road Application
    You could go with a Timbren Axle Less system like the part # ASR2KHDS03 which will attach directly to your trailer frame and has a 4 inch lift built into it for better ground clearance since this will be an off-road trailer. Since there isn't an axle tube that runs across trailer that helps with ground clearance as well. Regardless of your frame dimensions this will fit as well.
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  • Recommended Timbren Axle-Less System for a Livin' Light QuickSilver 10.0 Pop-Up Camper
    Hey Jarred, there is no issue swapping your current axles out with the 3.5k axle-less system, the Timbren Axle-Less Trailer Suspension - Standard Duty # ASR3500S06; This system does also have the built in 4" lift you're looking for as well. These aren't really going to last any longer than the 2k axles would, either. These are rated higher at 3.5k, but other than that, they are virtually the same. If there is anything else I can help you with, please feel free to drop a comment and...
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  • Timbren Axle Less System with 5 on 5 inch Bolt Pattern
    For a hub that has a 5 on 5 inch bolt pattern to fit the spindles of the Timbren axle less kit part # ASR2KHDS03 you would want the Trailer Hub part # AKIHUB-550-35-K. This hub includes the bearings that the Timbren is designed to fit. This setup has a 4 inch lift and the hubs have the 5 on 5 inch Jeep bolt pattern.
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  • Recommendation for Converting Fleetwood Neon Pop-Up to Axle-Less Suspension System with Jeep Tires
    To convert your offroad trailer to the Timbren Axle-Less Trailer Suspension System - 4" Lift Spindle w/ Brake Flange - 5,200 lbs # TASR5200S03 you will either use a crossbrace for your trailer frame at the axle location or you will add a 2 inch square tube between the assemblies (not included) into the integrated holes of the assemblies. This will give you much more ground clearance than a standard axle and will also include the suspension needed. Unfortunately that 5,200 lb Timbren...
    view full answer...
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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...
  • 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...
  • Dimensions of the Timbren Heavy-Duty Axle-Less Trailer Suspension # ASR2KHDS03
    I attached a picture that has all of the dimensions for the Timbren Heavy-Duty Axle-Less Trailer Suspension # ASR2KHDS03 listed.
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  • Recommended Timbren Axle-Less Suspension W/ 8 on 6-1/2" Bolt Pattern For M101A2 Trailer
    I would be happy to help! There are a few different systems that will work with hubs that have the 6 on 5-1/2" bolt pattern, and the correct one will be dependent on the axle rating of your current axle. More than likely you will want the Timbren Heavy-Duty Axle-Less Trailer Suspension - 2" Lift Spindle - Off-Road Tires - 3,500 lbs # TASR35HDS06 which has 3500lb rating but uses larger 5200lb hubs so you can have the 8 on 6-1/2" bolt pattern you are wanting, and is designed specifically...
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  • 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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  • Timbren Axle Less Kit Recommendation for 2k Axle with Lift Kit and Jeep Wheel Bolt Pattern
    We've had this question a few times in the past and we have been told a few times by Jeep owners that the Jeep bolt pattern is 5 on 5 inch which we'd have a solution for with the 2k Axle Less Timbren kit part # ASR2KHDS03 that you are interested. For a hub and drum that fits that axle kit and has the correct bolt pattern you'd want the part # AKHD-550-35-EZ-K. For brake assemblies you'd then want the part # 23-468-469.
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  • Is It Actually Easy to Replace Spindle on 2,000 lb Timbren Axle-Less System
    That's a good question, and it wouldn't be just the spindle itself that gets replaced on the Timbren Axle-Less systems, it would be the whole spindle arm that would need to be replaced if there was any damage. If you take a look at the photo I added of the Timbren Axle-Less Trailer Suspension System # ASR2000S01 you can see that the spindle arm is a separate part. So to replace the spindle you would just unbolt the arm and then bolt on the new arm which has the spindle on it. As for a...
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  • Does the Timbren Axle Less Systems Come with Castle Nut, Washers, and Cotter Pins
    Actually the Timbren Heavy-Duty Axle-Less Trailer Suspension # ASR2KHDS03 comes with castle nuts, spindle washers, and cotter pins so you would not need to purchase them separately. I attached a picture that shows them all pointed out.
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  • Recommended Timbren Heavy-Duty Axle-Less Trailer Suspension for an Off-Road Trailer
    The distance from the center of the spindle to the bottom of the frame rail with the Timbren Heavy-Duty Axle-Less Trailer Suspension part # ASR2KHDS03 is 7-1/2". If you only have 3" from the center of the spindle to the bottom of the frame rail on your existing setup then you are going to want to use the Timbren Heavy-Duty Axle-Less Trailer Suspension part # ASR2KHDS02 which has a distance from the center of the spindle to the bottom of the frame rail of 3-13/16" which is the closest option...
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  • Timbren Axle-Less Suspension System And Hubs For an Off Road Trailer With 5 on 5" Wheel Lugs
    I recommend the Timbren Heavy-Duty Axle-Less Trailer Suspension # ASR2KHDS03. They are rated for 2,000lbs and include a 4" lift spindle that is also extended for wide tires. The face will sit 8-1/2" from the frame and the centerline of the spindle will be 7-1/2" from the bottom of the frame. The Trailer Idler Hub Assembly # AKIHUB-550-35-EZ-K will give you a 5 on 5" idler hub if you do not want or require trailer brakes. This includes all the bearings, races, lug nuts dust cover and grease...
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  • Timbren Axle Less kit for 4,000 lb Trailer that has 4 inch Lift
    The Timbren Axle Less Kit part # ASR2KHDS03 that you referenced is essentially a 2,000 lb axle so it would take two of them for a 4,000 lb trailer. If you have a 4,000 lb trailer axle the most similar option that would work well you'd want the Timbren # T99GR which has a 4 inch lift like the axle you mentioned and has a 5,200 lb capacity so it would work great.
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  • Axle and Hub Solution for Home Made Trailer Using Jeep Wheels with 5 on 5 Bolt Pattern
    I have a solution for you, but without having an axle already, I wouldn't have a spindle and conversely the hubs to match it up to. With that being said, I would recommend going with the Timbren Heavy Duty Axle-less Trailer Suspension # ASR2KHDS03 and the etrailer Idler Hub # AKIHUB-550-35-K. I've seen a lot of Jeep-ers built their off-road trailers using the Timbren Axle-less suspension system and they really do a great job. This system has a completely independent suspension system...
    view full answer...
  • Axle and Hub Recommendation for a Custom ATV Off Road Trailer
    The bolt pattern of 4 on 4 3/8 inch isn't a standard bolt pattern for trailer hubs so you won't be able to find a hub to fit it. Plus, we don't recommend the use of passenger vehicle rims for trailers. So basically I have a solution for you that I can provide, but it will involve using trailer rims and tires. For an axle system for an off-road trailer I like the Timbren Axle-Less Systems like part # ASR2KHDS03. This is a 2k rated "axle" that is designed for wider tires and will give the...
    view full answer...
  • Will 14 Inch Wheels and Tires Fit an Aluma Motorcycle Trailer
    The 4.80 x 12 trailer tires you have now are 20.7" diameter x 4.9" wide. The smallest available tire we have for a 14" wheel is a 205/75-14 which measures 26.3" diameter x 8.1" wide. Therefore, you most likely won't be able to fit this size tire on your Aluma Motorcycle Trailer without modifications. That said, if the reason that you would like to go with a larger tire is for a higher speed rating I do have an option for you in the Taskmaster 4.80R12 Radial Trailer Tire part # TT48012C...
    view full answer...
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  • What is the Widest Tire That Will Fit the Timbren Heavy-Duty Axle-Less Trailer Suspension
    When it comes to tire size and clearance, you want 3" on the top for suspension travel and 1-2" of clearance from the side of the tire to the closest part of the trailer. Based on the dimensions of the # ASR2KHDS03 it looks like the distance from the center of your wheel on your hub to the trailer frame will be 8-1/2". That is assuming nothing else on the trailer will be closer. This means the width of the tire should be no more than 15" which none of our trailer tires even come close to. If...
    view full answer...
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  • Timbren Axle-Less System Compatible with 5 on 5 Inch Bolt Pattern
    To get the 5 on 5 bolt pattern, you will need the Trailer Idler Hub Assembly for 3,500-lb Axles - 5 on 5 - Pre-Greased # 84550BX or the Dexter Trailer Hub and Drum Assembly for 3,500-lb E-Z Lube Axles - 10" Diameter - 5 on 5 - Pre Greased # 84556UC3-EZ and brake assemblies # AKEBRK-35-SA. These options work with the Timbren Heavy-Duty Axle-Less Trailer Suspension - 4" Lift Spindle - Wide Tires - 2,000 lbs # ASR2KHDS03. Timbren Heavy-Duty Axle-Less Trailer Suspension - 4" Lift Spindle...
    view full answer...
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