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

Item # ASR1THDS03
Our Price: $1,016.95
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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 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
  • Rubber Spring Suspension
  • No Hubs
  • Timbren
  • Easy Lube Spindles

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.


  • 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


  • 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: 16" or larger
    • 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

13" 17-11/16" 1" 5" 9-5/8" 4-1/4"

Axle-Less dimensions top view

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

Customer Reviews

Timbren Axle-Less Trailer Suspension - Heavy Duty - Long Spindle w/ 4" Lift - 4 Bolt - 2.2K - ASR1THDS03

Average Customer Rating:  4.6 out of 5 stars   (306 Customer 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.


Incredible system. Handled our Overland trek through Colorado and Moab. These axles on our 1917 Ford bed ran multiple Jeep Badge of Honor trails. The suspension handled flawlessly. Handles off camber rocks and drop offs smoothly. We ran the 4 inch lift and off road offset to fit the factory Jeep wheels.


Josh helped guide me to the right product, ensured I had any and all additional items to finish the project.
Well done Josh and THANKS!


I installed these on a small jeep style camping trailer that I built. I plated my frame and also used the suggested two inch square tubing to tie them together. It rides very well, looks like it should be very durable, it's a simple design, simple to install, more economical than other independent systems, has less parts to go bad than other systems, I would highly recommend to any body using a trailer on rough roads!



We just drove 1200 miles mostly at 75mph. The axles work very well in all conditions, trailer ride very smoothly.


I mounted these axels on my off road trailer, this trailer has 37" tires (same as my jeep) tracks perfectly on the road at 60 - 70 mph, Last summer I pulled this trailer on the Rubicon trail were while on the rocks the lean angle was so extream my trailer turned over on its side, when I winched my trailer back on its wheels all the weight of the trailer was on one axel. Timbren Axle-Less trailer axels are so well built and strong nothing bent, everything stayed intact. There is no sag in these axels as well. I could not be more pleased with the Timbren axels.


Hello I just received my order today that I only placed on Wensday. That night at 7:30 pm. I received an email stating your order is ready for shipping! I received my order on Friday WOW FAST FREE SHIPPING. Great product fast shipping. I'm going to start building OVERLAND TRAILERS.



Fantastic O will ONLY use Timbren Axles on my Overland Campers



Fantastic O will ONLY use Timbren Axles on my Overland Campers


Everything came really fast, quicker than we had anticipated and in one piece. The email notifications on shipping were great and accurate as well.

The only thing I would point out, if you order AKHD-655-35-EZ-K Trailer Hub and Drum Assembly - 3,500-lb E-Z Lube Axles - 10" Diameter - 6 on 5-1/2 it is not a set, it just one drum assembly.


Very well-made very impressed I’ve made many trailers the first time I’ve tried the system My choice for good off-road trailers .
as far as there professional ability to get what you need and if something wrong they cracked it faster than you can think about it .


We use this on our overland trailer build. Works awesome


The product is more better than I thought it would be very satisfied costumer service was great

by: 03/09/2024









Very smooth pull. I'm very impressed on how the trailer pulls. My traditional axle trailer seemed to bounce a lot on the highway which made a lot of noise, but with the Timbren Axle-less that I installed on a new trailer, the trailer is so smooth and way less noise.
Great product.


The axle-less suspension worked very well for my boat trailer. The suspension was easy to attach to the trailer frame and provided a lower profile than the traditional leaf spring and axle system.


The service from etrailer has been great! They have been very helpful through the entire purchasing process. My one star is due to the quality of the product. First, for something as heavy duty as these are, you’d expect better packaging. On arrival, one of the spindles was sticking out of the box and the hand holds were torn on one of the other boxes. I was a little worried what I might find in the damaged box but everything seems to be intact. The disappointing part is the quality of the welds. For the price you are spending on these, I would expect a higher quality of fabrication. There is undercut in the welds that hold the three support plates together and big ol sloppy welds every where else. Unsure of what to do as my trailer has been designed around this suspension system.


I purchased the 3500 lb. set w/4" drop. Wish they made a 2" drop. Install was fairly easy, but most of your time will be consumed with alignment measurements, acquiring shims, and making adjustments. I was lucky to have a very square trailer frame. However, the "slop" in the all of the mounting bolts (especially, the spindle mounts) is more than the 1/8" window they specify. You will want to preload all bolts before tightening, and then measure for alignment/toe-in. The units are supposed to have camber built-in, but it's not near enough (more shims). Also, this suspension has more travel then the documents indicated. I had to re-mount my fenders 1" higher to keep the tires front hitting. When fully loaded, you might have 1" of travel left. All that being said, the ride is better than I anticipated. It's less bouncy than a torsion axle, and very quiet. If I was building a trailer from scratch, I would use this system, again.


The trailer rides great down the road and no more worries about saltwater and rusty leaf springs. Not a cheap option but I’m very happy with the setup. When installing, just be sure to measure accurately and have sharp drill bits. A drill press type of guide also helps ensure correct drilling angles. The first picture is of a mounting gusset a local welding shop made. One is needed for each side and necessary to provide needed mounting strength-at least on my trailer frame. Pics 2 and 3 show the mounted suspension on one side of the trailer. Pic 4 shows the suspension on one side of the trailer with the axle attached and a separately purchased disc brake assembly mounted on it. Finally, pic 5 shows a 2” box channel between both suspension assemblies. Independent suspensions would have been nice, but I wanted to ensure trailer rigidity was maintained. So, after one year, so far, so good. It’s all smooth sailing down the highway.


Purchased 2 sets of the Timbren 1200 Axle-less systems for upgrading the suspension on an older 30' ft glider trailer. Single axle with small (13") tires made towing tough due to porpoising, dragging on drive entrances do to poor flotation; also German made and metric, no repair parts. GVW 2000 lbs equated to bouncy ride.

Dual sets now allow the trailer to ride over bumps and sharp inclines easily, smoothly, little bounce on country roads; porpoising is history. My glider now rides securely, safely, quietly.

Install time 4 1/2 hours (includes head-scratching). Results are outstanding, units are totally solid. Recommend the square tube interconnect, easy and quick - trailer frame was on the light side, so a precautionary fix. Clean look underneath.

Ordered 5 wheels w/tires, very nice.

Helpful neighbor so impressed he ordered a HD single set for his new DIY snowmobile trailer.

Customer satisfaction 100%, from phone order, online support, product information, immediate shipping, install instructions, followup... HIGHLY RECOMMENDED!


It is important to know that your wheels are going to sit very tight to the trailer frame. I needed to add an extension to the hub for it to clear the sides of the camper I built.


Trailer suspension and disk brake performance is outstanding big big difference over leaf spring and electric drum brakes.
Installation required modifications to the frame to monut the timbren suspension

Show More Reviews

See what our Experts say about this Timbren Trailer Axles

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    It is not possible to run 17 inch wheels with the Timbren Axle-Less Trailer Suspension System - 4" Lift Spindle w/Flange - Off-Road Tires - 2.2K # ASR1THDS03. The largest wheels you can run on a hub that fits the spindles on these Timbrens are 16 inches with the Dexter Trailer Hub and Drum Assembly # 84656UC3-EZ
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  • Recommended Axle Setup For a 5 X 8 Off-Road Trailer With Jeep Wheels
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  • 6k Hub Drum that Can Fit Timbren Axle Less Kit part # ASR1THDS03
    While we don't carry that exact part number we do have a replacement hub/drum that would work just as well with the part # AKHD-655-6-EZ-K. This is a 6k hub/drum that fits the spindles of the Timbren Axle Less Kit part # ASR1THDS03.
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  • Hub Recommendation for Timbren Axle-Less System ASR1THDS03 with Jeep Bolt Pattern
    Typically the Jeep wheel bolt pattern is 5 on 5 inch. For an idler hub that will fit the spindles of the part # ASR1THDS03 and have the correct bolt pattern we have the # AKIHUB-550-35-K. This is a 3,500 lb trailer hub. The # ASR1THDS03 has a 4 inch lift built into it so it would work well for you since your Jeep is also lifted.
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  • Comparing Timbren Axle-Less 2K Trailer Suspension Systems with 4" Lift
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  • Compatible Idler Hubs and Hub/Drums for Use with Timbren Axle-Less Suspension System
    Timbren Axle-Less Trailer Suspension System # ASR1THDS03 requires hubs that use inner/outer bearings # L68149 and # L44649. This set of bearings is popular and all idler hubs and hub/drums that use these bearings appears on the page I linked for you. A cost-effective hub/drum option is the 10-inch etrailer AxleTek hub # AKHD-545-35-K or for an idler hub part # AKIHUB-545-35-K.
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  • Timbren Axle-Less System With 2,200 lb Capacity Compatibility With Dexter Brake and Hubs K71-511-00
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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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  • Availability of Timbren Axle-Less Suspension with 4 Inch Lift
    We do offer the Timbren Axle-Less Trailer Suspension System with the 4 Inch Lift Spindles # ASR1THDS03. This system is designed for use with off-road tires and the 4 inch lift will provide additional ground clearance for your trailer. The # ASR1THDS03 Axle-Less system has a weight capacity of 2,200 pounds. I have linked this product to the page, below the answer, for your convenience.
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  • Parts Needed to Complete 2200-lbs Timbren Axle-Less Suspension System for Off Road Trailer
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  • 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...
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  • Timbren Axle Less Setup for Off Road Camper that Uses Jeep Wheel Bolt Pattern
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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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  • Will Timbren Axle-Less System Fit Harbor Freight Trailer with L-Shaped Frame
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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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  • 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 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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  • Which 6 on 5-1/2 Hubs and Brakes to Fit 2.2k Timbren Axle-Less System with 4 Inch Lift Spindle
    The Timbren Axle-Less Trailer Suspension System - 4" Lift Spindle w/Flange - Off-Road Tires - 2.2K # ASR1THDS03 requires hubs with an # L68149 inner and # L44649 outer bearing, so I recommend using the Easy Grease Trailer Hub and Drum Assembly for 3.5K Axles - 10" - 6 on 5-1/2 - Pre-Greased # AKHD-655-35-EZ-K. These hubs have a 6 on 5-1/2 bolt pattern to match your Tacoma's. For the brakes, we do not have an assembly that is both self adjusting and also has a parking brake. If your priority...
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  • 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...
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  • Thickness of Steel Tube to Mount 2,200 lb Axle-Less Trailer Suspension System
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  • Off Road Timbren Axle Less Recommendation that Can Be Used with Jeep Bolt Pattern
    The part # ASR35HDS02 only has hubs with 6 lug patterns and up since it's a higher rated system. It's odd because the axle is 3,500 lb rated but designed for 6k rated hubs. Isn't the 5 lug pattern you mentioned the Jeep bolt pattern? Typically the Jeep wheel bolt pattern is 5 on 5 inch. For an idler hub that will fit the spindles of the part # ASR1THDS03 and have the correct bolt pattern we have the # AKIHUB-550-35-K. This is a 3,500 lb trailer hub. For a hub drum we have the # AKHD-550-35-EZ-K. The...
    view full answer...
  • 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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  • Can Single Axle Trailer Be Converted To Tandem Axles With Two Timbren Axle-Less ASR1THDS03?
    Yes you can use two of the Timbren Axle-Less Trailer Suspension System - 4" Lift Spindle w/Flange - Off-Road Tires - 2.2K # ASR1THDS03 you were looking at to lift your 6' x 12' enclosed Carry-On trailer to add larger tires. If the GVWR of your trailer is over 3500lbs you will need to add trailer brakes, as most of the country requires them at that weight. For trailer brake assemblies you would need two of the Electric Trailer Brake Kit # AKEBRK-35-SA, two of the mounting hardware # BRKH10A,...
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