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

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

Part Number: ASR2KHDS05
$914.01
Trailer Axles
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Get more ground clearance and a smoother ride when towing with Axle-Less trailer suspension. Built-in shock absorption limits rattle and bottoming out. E-Z Lube, 4" drop spindle lowers deck height for easy loading. Fits any trailer frame width. Great Prices for the best trailer axles from Timbren. Timbren Axle-Less Trailer Suspension - Heavy Duty - 4" Drop - 4 Bolt Flange - 2,000 lbs part number ASR2KHDS05 can be ordered online at etrailer.com or call 1-800-940-8924 for expert service.
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Timbren Trailer Axles - ASR2KHDS05

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

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


Features:

  • Delivers a smooth, stable, quiet ride - regardless of load size
    • Jounce springs absorb road shock and support trailer's load
    • Rebound springs minimize body roll, rattle, and bottoming out
    • Built-in camber and toe-in reduce wear on your trailer's tires
    • Units work independently - what affects one side of your trailer won't affect the other
  • Eliminates axle beam to increase ground clearance and fit any trailer frame width
    • System replaces 1 trailer axle and suspension components
    • 2 Separate units bolt directly to your trailer's frame
  • Designed for your overlanding or off-road adventures
    • Robust, heavy-gauge steel construction is built to handle abuse
    • Black powder coat resists rust and corrosion
  • Lowers trailer deck height for easier loading and unloading
    • 4" Drop spindle is built in
  • Allows for simple bearing maintenance with built-in grease zerks


Specs:

  • Application: single- and tandem-axle trailers that use regular tires
    • Tandem-axle trailers require 2 complete systems
    • Not recommended for triple-axle trailers
  • Quantity: 2 suspension units (without hubs)
  • Weight capacity: 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 drop spindles built in, you'll get a lower deck height without sacrificing clearance.


Timbren Axle-Less Suspension vs. Other Suspension Systems

There are many suspension options for your trailer or camper. So, what makes Timbren Axle-Less different?


Leaf Spring Example

Axle-Less systems are a definitive upgrade over traditional leaf springs, in part because they allow you to do away with your thru-axle, allowing for maximum clearance. As you've probably noticed, having a leaf spring suspension means that your axle will always hang at least a few inches below your trailer's frame, resulting in limited ground clearance and a high deck height. This may make it difficult to navigate off-road terrain and to load items into your trailer.


In addition, while leaf springs do a great job of supporting an even load, they may cause your trailer to bounce and rattle when it's empty or to bottom out with a heavy load. And they don't offer any type of shock absorption for a smooth ride - unless you have upgrades built in. With Timbren's Axle-Less system, gone are the days of dealing with these annoyances - this suspension is designed for a quiet, balanced ride, whether your trailer's fully loaded or empty.


Torsion Axle Example

A torsion axle is a step up in terms of shock absorption, and it provides more clearance than a traditional, leaf spring suspension, but that crossbeam will still hang down some. And if your torsion axle gets damaged in any way, it can't be repaired - you'll have to replace the entire thing with a setup that matches your exact trailer frame width.


With the Axle-Less system from Timbren, you won't have a low-hanging axle beam to get in the way when you want to go off-road. The drop spindles on this setup will also lower your deck height, making loading and unloading your trailer way easier. And the rubber springs and independent operation both combine to absorb shock and deliver a smooth, easy ride. In addition, the Axle-Less system can be easily maintained over time, and it will fit any trailer frame width, so you don't have to worry about potentially ordering the wrong size like you might with other systems.


Timbren Silent Ride Example

Another suspension upgrade on the market is Timbren's Silent Ride. This setup is a great option to reduce bounce and rattle because it has the same AEON rubber springs as the Axle-Less system. But the Silent Ride still requires an axle, so you won't get the same ground clearance or low deck height as you will with the Axle-Less suspension.


Timbren Axle-Less Suspension Parts

The Timbren Axle-Less suspension is designed with you in mind. All of the parts work together so you can tow your trailer comfortably - regardless of load size.


Timbren Axle-Less Suspension Parts Diagram

  1. The jounce spring supports the weight of your trailer and cargo. It easily absorbs road shock and is constructed of AEON heavy-duty, hollow rubber.
  2. The rebound spring delivers a smooth, stable ride - regardless of how much cargo is on the trailer. It controls the movement of the jounce spring to minimize trailer body roll, bounce, rattle, and bottoming out.
  3. The trailing arm with integrated hanger attaches the suspension to the side and bottom of the trailer frame.
  4. The control arm carries the spindle and the hub. It pivots on strong, long-lasting polyurethane bushings that never require lubrication.
  5. The E-Z Lube, 4" drop spindle is simple to grease. If damaged, it can be removed and replaced, saving you both time and money compared to a traditional axle.
  6. The built-in hole accepts 2" x 2" steel tubing (not included) to add support to your trailer's frame. The tubing sits higher than a trailer axle, providing additional ground clearance.

Installing the Timbren Axle-Less Suspension

Measuring Diagram

The first step in installing the Timbren Axle-Less suspension is to make sure that the mounting points for each unit are directly across from each other. The easiest way to measure this is to mark the desired mounting points on your trailer's frame. Then measure the distance between these points and the center of your trailer coupler. These measurements (A and B) need to be within 1/8" to keep your trailer frame square.


Once you have your mounting points lined up, you'll be ready to install the system. Drill 3 holes into your trailer frame at the desired mounting points. Then bolt each unit to the frame with Grade 8, 1/2" bolts (not included).


Keep Your Trailer Frame Square

Because Timbren's Axle-Less system eliminates your trailer's thru-axle, you'll have to find another way to get the crossbeam support that keeps your trailer frame square. You have a few different options to do this depending on your application and how much fabricating you're comfortable doing.


Crossmember Installation

If you're building a trailer, the best option is to begin building with the Timbren Axle-Less in mind and include a crossmember where you want to install the units on your frame. You can also retrofit an existing trailer with a crossmember.


Steel Tubing Installation

If you don't have a crossmember where you want to install the Axle-Less system (and you don't want to add one), pick up a section of 2" x 2" steel tubing from a nearby weld shop. This tubing will serve as a support to keep your trailer square. It will hang only about an inch down from your trailer frame, providing more clearance than a thru-axle.


After you've mounted both of the units to your frame, you'll need to drill 3 holes into the steel tubing and into the built-in, square holes. Then, insert the tubing through the holes and secure it with 3 bolts (not included) on each side.


Reinforcement Bracket Installation

The last option is to fabricate a reinforcement bracket that can be attached to the inside of your trailer frame and to the Axle-Less suspension. It may be a little harder to fabricate a compatible bracket than to mount steel tubing, but you may get additional clearance with this method.


Dimensions of the Timbren Axle-Less Suspension

The following diagrams show measurements taken on the Timbren Axle-Less suspension system.

Axle-Less dimensions front view

A B C D E F
13" 16-1/2" 1" 5" 0" 4-1/4"


Axle-Less dimensions top view

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




ASR2KHDS05 Axleless Trailer Suspension System by Timbren - 4" Drop Spindle - Without Hubs - 2,000 lbs HD

Installation Details ASR2KHDS05 Installation instructionsAlternate Instructions ASR2KHDS05 Installation instructions



Ratings & Reviews

4.6

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

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See what our Experts say about this Timbren Trailer Axles

  • Will Timbren Axle-Less System Allow Lower Deck Height on Trailer?
    There is a Timbren Axle-Less Suspension System which will allow you to lower your deck height, though it won't give you quite the amount you are looking for. The Timbren # A35RD545E has a 4-inch drop spindle so it will lower your deck height by that much. This system comes with electric brakes and hubs with a 5 on 4-1/2 bolt pattern. You would be able to use a wheel and tire combination such as the Provider # TA82MR which have 14-inch wheels and a total diameter of 26.1 inches.
    view full answer...
  • 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...
  • Timbren Axle-Less Setup Recommendation for Pop Up Camper Trailer
    To keep the deck height low like you want you would want the 4 inch drop Timbren axle-less system part # ASR2KHDS05 for a torsion style axle setup. This has a 2k capacity so it should be right at the same capacity as your trailer. For hubs to fit this system you would want the part # 84545UC1-EZ. This has a 5 on 4-1/2 inch bolt pattern so for a wheel in the tire size you have listed you would want the # AM30820. You might contact the manufacturer of your trailer to determine if an axle-less...
    view full answer...
  • Lowering Boat Trailer Converted to Flat Bed Trailer
    If your trailer already has an over-under kit like # K71-385-00 to put the leaf springs above the axle, then you simply need to remove the kit to put the axle on top of the leaf springs using the factory mounted spring seat on the axle. This will lower the trailer by the diameter of the axle as well as the height of the leaf spring stack. If you need to further lower the trailer, then shorter spring hangers are needed. I recommend the CE Smith Front/Rear Hanger Bracket for Double-Eye...
    view full answer...
  • Replacement 2000-lb Trailer Axle for 4 x 8 Folding Trailer
    Dexter Trailer Axle Beam with Standard Spindles # T20BTR-6048 will fit in place of a 2K-rated 60-inch axle with 48-inch spring centers. The included straight spindles will accept hubs that use bearing L44649 for both the inner and outer bearing. If the weight rating, length, spring centers and bearing set match your current set-up then this axle will be a suitable replacement. Bargain trailers often use uncommon bearings so you'll want to match up the bearing set in your hubs to ensure...
    view full answer...
  • Recommended Axles For Low Deck Height On Trailer Build
    We do carry axles and I've linked the page to all of your options. For a low deck height, I recommend using the Timbren Heavy-Duty Axle-Less Trailer Suspension - 4" Drop Spindle - Regular Tires - 2,000 lbs # ASR2KHDS05 or the 3,500 lb 4 inch drop spindles with drum brakes # ASR2KHDS05. The 4 inch drop will give you a lower deck height than a standard axle and will also give you increased ground clearance by using the integrated suspension and smaller crossbar of 2 inches square if it...
    view full answer...
  • Do Different Timbren Axle-Less Suspension Systems Have the Same Camber and Ride Height
    The caster and camber could be the same on the # TASR35HDS03 and # ASR2KHDS05. The system has a slight manufacture camber. However, it is up to you on how much camber you have based on the installation. This can be changed using the included shims. As far as the ride height is concerned, these do not have the same dimensions. This will result in a different height between the systems when installed. The # TASR35HDS03 will also stick out farther. Since there is no real advantage to using...
    view full answer...
  • Recommended Axle For Small Trailer Build
    For your custom build trailer, I recommend the Timbren Heavy-Duty Axle-Less Trailer Suspension - 4" Drop Spindle - Regular Tires - 2,000 lbs # ASR2KHDS05. This will keep your spacing for your tires set and allow you that custom width with a perfect fit. The 4 inch drop will also get it lower to the ground. This also takes care of your suspension needs. For compatible hubs, I recommend the Trailer Hub and Drum Assembly - 3,500-lb Axles - 5 on 4-1/2 - E-Z Lube # AKHD-545-35-EZ-K along...
    view full answer...
  • Hubs and Wheel and Tires that Fit Timbren Axle Less Kit # ASR2KHDS05
    All of the parts you mentioned will work great together. The Timbren kit part # ASR2KHDS05 uses idler hubs # 84545UC1-EZ and the wheel and tire combos of part numbers # AM31952 and # AM31951 would fit well since the bolt patterns match correctly.
    view full answer...
  • Recommended Timbren Axle-Less Suspension With Compatible Idler Hub Assemblies
    The Timbren Heavy-Duty Axle-Less Trailer Suspension - 4" Drop Spindle - Regular Tires - 2,000 lbs # ASR2KHDS05 are very popular, so we try to keep them available. The idler hubs I recommend that are compatible are the Trailer Idler Hub Assembly for 3,500-lb Axles - 5 on 4-1/2 # AKIHUB-545-35-EZ-K. This products will work very nice together for your application and comes pre greased to save some time and hassle.
    view full answer...
  • What Hub Assembly for Timbren Heavy-Duty Axle-Less Trailer Suspension
    The Timbren Heavy-Duty Axle-Less Trailer Suspension, # ASR2KHDS05 is designed to fit hubs for #84 spindles. The Spindle/hub compatibility is: - Bearings, # L68149 inner, # L44649 outer - Races, # L68111 inner, # L44610 outer - Seal, # 58846 If you do not intend to have electric brakes, you can use the Trailer Idler Hub Assembly, # AKIHUB-545-35-K. The wheel and tire combos of part numbers # AM31952 and # AM31951 will fit well.
    view full answer...
  • Recommended 3500lb Timbren Axle-Less W/ 4 Drop For 3000-3300lb Horse Trailer
    Thanks for all of the information! The products you were looking at are all compatible. Starting with the Timbren Axle-Less Suspension I would go ahead and use the # A35RD545 as it has the 3500lb rating which will be perfect for your intended trailer weight, and already includes the 5 on 4-1/2" bolt pattern hubs that you were wanting. The # ASR3500S04 is the exact same spindle just without hubs, and would work perfectly with the # CE13515 you mentioned, but there is not really much of...
    view full answer...
  • Recommended 2K Trailer Axle with 4" Drop and 5-Lug Hubs
    The Trailer Axle with Idler Hubs # e84YR is a bit of a smaller axle and while I do have a solution for you, all of our 2K axles that have a 4" drop are a bit larger. For your application I recommend going with the following parts: - Timbren Axle-Less Trailer Suspension # ASR2KHDS05 - Easy Grease Trailer Idler Hub Assembly # AKIHUB-545-35-EZ-K (you need 2 of this) The Timbren kit gives you an upgraded alternative to standard trailer suspension parts and since it doesn't have a crosstube...
    view full answer...
  • Is There a 1,200LB Timbren Axle-Less Suspension With a 4" Drop Spindle?
    We currently only carry the Timbren Axle-Less Suspensions as an entire setup and the lightest we carry with a 4" drop is the 2,000LB # ASR2KHDS05. If you only want the spindles for the 1,200LB # ASR1200S04 you can reach out to Timbren directly.
    view full answer...
  • Are the 2K Timbren HD Axle-Less Trailer Suspension # ASR2KHDS05 Sold in a Pair
    The Timbren Heavy-Duty Axle-Less Trailer Suspension # ASR2KHDS05 comes in a pair so you would only need to purchase one to replace one axle on your trailer. If you have a tandem axle trailer you will want to replace both axles with this type of system. For applications that have more than 2 axles a standard trailer axle will need to be used. I have attached an installation video for you to check out as well.
    view full answer...
  • 2,000 lb Timbren Heavy-Duty Axle-Less Trailer Suspension With 5 on 5 Inch Bolt Pattern
    There isn't a 5 on 5" hub that comes together with the Timbren Heavy-Duty Axle-Less Trailer Suspension # ASR2KHDS05, so you will need to get the system and hubs separately. What you will need are: - Timbren Heavy-Duty Axle-Less Trailer Suspension - 4" Drop Spindle - Regular Tires - 2,000 lbs # ASR2KHDS05 - Trailer Idler Hub Assembly for 3,500-lb E-Z Lube Axles - 5 on 5" # AKIHUB-550-35-EZ-K Since the Timbrens use E-Z Lube spindles you will want to use the E-Z Lube hubs. I have added links...
    view full answer...
  • Hub & Drum and Brakes for 2,000 lb Timbren Heavy-Duty Axle-Less Trailer Suspension
    We have compatible brakes for the Timbren Heavy-Duty Axle-Less Trailer Suspension - 4" Drop Spindle - Regular Tires - 2,000 lbs # ASR2KHDS05, though they are not the Dexter 7" brakes. Instead, you would need the correct hub and drum with 10" brake assemblies: - Dexter Trailer Hub and Drum Assembly for 3,500-lb E-Z Lube Axles - 10" Diameter - 5 on 4-1/2 # 84546UC3-EZ - Electric Brakes: Dexter Electric Trailer Brake Assembly - 10" - Left Hand # 23-26 and Right Hand # 23-27 OR - Hydraulic...
    view full answer...

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Info for this part was:

Employee Leah B
Edited by:
Leah B
Employee Lindsey S
Updated by:
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Employee Wilson B
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Wilson B
Employee Kristina F
Updated by:
Kristina F
Employee Noah M
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Employee Jameson C
Expert Research:
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Employee David L
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Employee Kathleen M
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Kathleen M
Employee Chris R
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