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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 - 4" Lift - 4 Bolt Flange - 2,200 lbs
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Timbren

Timbren Axle-Less Trailer Suspension - Heavy Duty - 4" Lift - 4 Bolt Flange - 2,200 lbs

Part Number: TASR1THDS04
In Stock
$1,017.56
Trailer Axles
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etrailer Installation
We'll connect you with nearby partnered installers who know this exact setup.
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 - 2,200 lbs part number TASR1THDS04 can be ordered online at etrailer.com or call 1-800-940-8924 for expert service.
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Timbren Trailer Axles - TASR1THDS04

Highlights

  • Raises trailer 4": Built-in lift spindles increase ground clearance for rough roads and driveways.
  • 2,200-lb capacity: Supports small to mid-size trailers while keeping the ride stable and controlled.
  • Axle-less design: Removes the cross-axle for max clearance and easy fit to any trailer frame width.
  • Rubber jounce & rebound springs: Absorb bumps and body roll for a smoother, quieter tow.
  • Independent suspension: Each side moves separately so one-side bumps don’t shake the whole trailer.
  • E-Z Lube 4-bolt spindles: Allow simple bearing maintenance and use common L68149/L44649 bearings.

Features to know about

More Clearance Where It Counts: Built-In 4" Lift Spindle

Dragging the frame on steep driveways or rutted backroads is no fun. This Axle-Less suspension raises the deck height with a built-in 4" lift spindle, giving you extra ground clearance to protect plumbing and underbody parts. With the axle beam gone, there’s nothing hanging low, so you can tow confidently over uneven terrain without scraping or bottoming out.

Smooth Ride on Rough Roads: Jounce and Rebound Rubber Springs

Rattle and bounce make long hauls tiring for both the driver and the trailer. The heavy-duty AEON jounce springs absorb road shock and carry the load, while the rebound springs keep body roll and sway in check. Together they deliver a smooth, stable, and quiet ride—whether the trailer’s empty or fully loaded—so your cargo stays protected and the trip feels steady all the way.

Independent Action for Better Handling: No Axle Beam to Bind Movement

When one wheel hits a bump, the other shouldn’t feel it. Each side of this suspension works independently, meaning road impacts on one side don’t shake the whole trailer. The setup handles tight turns and uneven ground with ease, improving stability and tracking. Built-in camber and toe-in also help reduce tire wear for longer-lasting, even tread.

Strong Build That Lasts: Heavy-Gauge Steel and 4-Bolt Flange

A rugged trail demands a tough suspension, and this one’s built from heavy-gauge steel with a black powder-coat finish to resist rust and corrosion. The 4-bolt brake flange and 1/2" bolt holes give a solid mount for your braking setup, and the E-Z Lube spindles make bearing maintenance fast and clean. It’s rated for a 2,200-lb capacity and built to take on miles of rough use without flinching.

Easy Fit for Custom Builds: Universal Mounting and Crossbeam Support

No need to hunt for a specific axle width—the Axle-Less design bolts directly to any trailer frame. If you don’t have a crossmember, you can add a 2" x 2" steel tube through the built-in holes for reinforcement. The result is a clean install that keeps the frame square while leaving plenty of clearance underneath. It’s a straightforward way to upgrade or build a trailer ready for real-world travel.

Crossmember installation example for reinforcing trailer frame with Timbren Axle-Less suspension

Example installation using 2x2 steel tubing as cross-support for Timbren Axle-Less trailer suspension

Reinforcement bracket installation example for Timbren Axle-Less suspension on trailer frame

Specs

Application

  • 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 and Capacity

  • Weight capacity: 2,200 lbs

Dimensions and Fitment

  • Brake flange configuration: 4 bolt
  • Bolt hole diameter: 1/2"
  • Suspension travel: 3-3/8"

Warranty

  • Warranty: 3-Year limited warranty

Tire, Wheel, and Hub Compatibility

  • Tire size: ST205/75R15 or smaller
  • Wheel diameter: 15" or smaller
  • Assumes: a wheel with zero offset
  • Bearings (sold separately) Inner: L68149
  • Bearings (sold separately) Outer: L44649
  • Races (sold separately) Inner: L68111
  • Races (sold separately) Outer: L44610
  • Seal: 10-19 (sold separately)
  • Seal inner diameter: 1.719"
  • Seal outer diameter: 2.565"

Dimensions of the Timbren Axle-Less Suspension

  • A: 13"
  • B: 17-11/16"
  • C: 1"
  • D: 5"
  • E: 9-5/8"
  • F: 4-1/4"
  • G: 5-5/8"
  • H: 6"
  • I: 4-3/4"
  • J: 1-3/4"
  • K: 3-3/8"
  • L: 3-11/16"

Note

  • Crossbeam support required: If your trailer frame doesn't have a crossmember, retrofit it or add support by running 2" x 2" steel tubing through the square holes in these units. You can also add a steel reinforcement bracket inside the trailer frame.
  • Jounce spring: Supports trailer weight and cargo, absorbs road shock, made of AEON heavy-duty, hollow rubber.
  • Rebound spring: Delivers smooth ride regardless of load, controls jounce spring to reduce roll, bounce, rattle, and bottoming out.
  • Trailing arm with integrated hanger: Attaches suspension to trailer frame.
  • Control arm: Carries spindle and hub, pivots on long-lasting polyurethane bushings that never require lubrication.
  • E-Z Lube, 4" lift spindle: Simple to grease, removable and replaceable if damaged to save time and money.
  • Built-in hole: Accepts 2" x 2" steel tubing (not included) to add frame support and provide additional ground clearance.
  • Installation measurements: Points A and B must be within 1/8" to keep trailer frame square.

ASR1THDS04 Axleless Trailer Suspension System by Timbren - 4" Lift Spindle - Without Hubs - 1 Ton HD

Installation Details TASR1THDS04 Installation instructionsAlternate Instructions TASR1THDS04 Installation instructions



Ratings & Reviews

4.6

167 reviews
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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.

by:

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.



by:

Very pleased with the design and heavy duty construction of these axles. Used them to build an off-road trailer and they performed flawlessly throughout many challenging trails and off road situations. My only complaint is that the ez-lube hub design does not take grease very easily. I've had to disassemble the hubs to properly grease both bearings due to the inadequate amount of grease flowing into the bearings.



by:

I replaced a failing torsion bar suspension and replaced with a timbren suspension it was a straight forward installation.



by:

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!



by:

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.



by:

building a ground loading motorcycle trailer the bed drops down flat threw the frame resting on the surface under the trailer allowing the motorcycle to be driven on without ramps or tilting the trailer bed the axle less trailer suspension is the only way to go and it rides better .



by:

I think their axle-less design is very clever. The build quality of the suspension part looks good. I have heartburn over the spindle build quality. The spindle is mounted to the suspension and then the trailer wheel mounts on the spindle. The spindles I received are warped from welding. The plate that bolts onto the suspension does not mount flat due to this warping. I called Timbren. The gentleman that helped me was very pleasant. I described the problems and he said he would check his inventory and call me back. He did call me back and said they are all like that. He said get out the grinder and fix what you can and just tighten the bolts super tight, maybe the gap will go away. Really? Wow. The other problems are a LOT of weld spatter where the bolts are supposed to fit and they made a bend in the plate too close to the bolt holes so two bolt heads hit the bend and dont fit flat against the part they are supposed to hold together. Yikes! I am taking the spindles to a machine shop to fix them but I would not have ordered this Timbren stuff had I been warned before hand. So, fair warning.



by:

Great looking parts, robust design, professional looking welds....Nothing missing...

I contacted Timbren prior to my purchase and received a prompt, helpful reply...

The supplied instructions are complete and straight forward, i'm confident should i have any issues, contacting them will get them resolved...



by:

Well made quality axle. The box it was shipped in failed. I hope all the parts are there.



by:

Love these axles. Will install in a week or 2. Fast shipping



by:

Great product so far after 1 year. Everthing is holding up and i have put it to good use on multiple occasions. The lift kit made my trailer off road capable and performed to my expectations.



by:

Outstanding product. I installed this set up on a M1102 military trailer. Straight forward install once the original axle is out of the way. The ride is much better and handles the roughest of trails very well. Also, with the more modern hub you have a lot more choice in electric brakes and wheel bolt pattern.



by:

I love these. 30k miles and still going. Almost 1k offroad and they're still holding up. Fully loaded my overlanding trailer weighs 2k lbs, empty 1360 lbs. They did settle a little, but I just raised my fenders a little.



by:

In one word: awesome! I used these to replace a wimpy torsion suspension on a small trailer. Torsion is not made for offroad and I also wanted to add some lift to the trailer. This thing improved the ride and handling a lot. Before when the trailer was empty it would actual jump off the ground when I hit a bump or speed hump. Now it actually has travel in the suspension whether loaded or not and the improvement is noticeable right away.
Notes:
1) This is a trailing arm suspension, so in order to stay centered in the existing wheel wells it needed to mount about 8 inches further forward than the existing torsion suspension was. My trailer didn't have frame where I needed it, so I had to do some fabrication to mount the Timbren forward the 8 inches needed.
2) My original suspension the wheel center line was actually above the bottom of the frame rail by a few inches. The Timbren as you can see in the pictures the hub (wheel center line) is 6 or 7 inches below the bottom of the frame rail that it mounts to. So in the end the Timbren with no lift or drop actually lifted my trailer about 9 or 10 inches. This was perfect for my needs because it was WAY too low before and I am using it on really hilly dirt roads and it handles them like a champ!
3) You are most likely going to need a 2 inch square bar tube to connect the two sides for stability. If you are doing the install DIY, I would wait until the Timbren are installed so you can measure exactly how long you need. This stuff is really, really hard to cut so it is nice to be able to tell the metal shop to cut to length when you are buying it. I got mine at a local metal shop.
4) IF you are replacing leaf springs with Timbren, notes 1 and 2 will still apply but you will need to make the measurements to make sure you get the wheels in the same spot under the wheel wells and also measure to see if you need to get the no drop, drop or lift version of the Timbren



by:

After a great deal of research, I ultimately chose the Timbren long arm kit to replace the torsion axle under my teardrop trailer. My initial impression is that there is simply no comparison between the two. It now rides better, pulls better and handles better than I could have imagined. The Timbren axle system is incredibly well built and is much more confidence-inspiring. While the spring rate closely matches my trailer weight, the components are much more rugged and robust. The spindles, bearings and brakes are rated at double the capacity of my old axle which gives me great peace of mind. I pull my trailer, both on and off road, anywhere it will fit and the long travel and heavier components are a game-changer for my travels. Installation, while requiring a bit of forethought, was otherwise straightforward and methodical. Documentation available from etrailer and Timbren, is second to none. Instructions were clear and concise with drawings and detail taking the major guesswork out of the equation. Even though, due to the odd frame design of my trailer that required a bit of work to adapt, I ended up making some frame stiffeners, the adaptation was as simple as it could possibly be. I've ordered from etrailer in the past and they were 100% accurate on this order as well. I ordered the Timbren kit without backing plates and hubs due to the requirements of my trailer and etrailer suggested, explained availability and supplied all of the components I needed. They truly a stress-less bunch of folks with an extraordinary website. I'll no doubt turn to them again...



by:

Here are some pictures of my Timbren axle installation. I used a 2000#
axle and a 3500# spindle combination. I am running a original 14" tire.
It was a moderately easy installation.



by:

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.



by:

Used this on a camping trailer behind our Jeep. The suspension handled 1000 miles of washboard gravel roads and mild rocky offroading with ease. We don't drive gently and had the trailer airborne at one point. The brackets that we opted to fabricate for them were straightforward and simple to install. I especially like the ground clearance under the trailer that you gain due to the lack of a solid traditional axle. The ride quality overall was excellent, especially given where we took it. In hindsight we should have gotten the 4" travel version as it may have been able to soak up deep ruts at 40mph a bit better. Only mild complaint is that the powdercoating on the leading edges had already begun to flake off when we received the suspension. I hit it with a can of spray paint, but I would have hoped it would be more durable. Overall, I will definitely be purchasing this axle-less suspension again for my next trailer build.



by:

Excellent, helpful customer service sold me this product, and trust me when I say it's worth the price tag. Pulled the old axle and leaf spring off a 60's era Bantam and swapped out for this with a support bar in between. Bumped up tires to 315/75r16 BFG TA/KO's to match my rig and am amazed at how much better this trailer now pulls. Empty it wad bouncing all over the place with the old axle and leaf spring setup. Now I hardly even know it's there. Was very easy to install, took a couple hours but I am happy with how it turned out. A+++ product and customer service!



by:

I was looking for a low profile axle system for my motorcycle trailer. The primary requirement was to be able to load my motorcycle by myself which required a low-profile trailer. With the 4" drop provided by Timbren, this setup turned out great. I originally intended on using ramps but after I swapped the leaf spring axle out with the Timbren, I found I was able to ride my motorcycle on/off without the need for the ramps.

Originally, I was going to go axle-less but I found when torquing down the assembly to my frame it started to compress the aluminum rail. To take the pressure off the frame I added the 2" bar from axle to axle. Pulls smooth and effortlessly.

I've had several people comment on the trailer height with one wanting to buy the trailer from me. This person worked at the local Honda Dealership. He thought it was a great design and I would imagine he's seen a variety of trailers come through his lot.

The other option I considered was a torsion axle but I was looking for the lowest profile I could get. Therefore, cost was not a key factor. I also like the soft ride the Timbren system provides. Not sure if the torsion design would have been as smooth over bumpy roads. Regardless, I'm pleased with how this project came out.



by:

So we had a torsion axle / frame failure and these and a new subframe was our solution! Amazing product upgrade with 12" brakes and 7000lb HD Running 16" BFG ko2 tires ! These are truly bolt on if you don't have frame problems also if your running single axles on the west coast and mountains the 12" brakes are a huge upgrade!!!



by:



by:

Very well made.



by:

I love them ride is great. Quality product and easy installation



by:

Timbrens work great! They make my homebuilt camper tow smooth, straight, and no bounce. Off road they give me better control and don’t make my light camper jump around on the trail. Install was straight forward, instructions were adequate and overall went pretty well. Staff at etrailer helped me pick the right bearings and provided great customer service as usual. I would recommend these to anyone looking to improve their trailers handling and towing characteristics.


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See what our Experts say about this Timbren Trailer Axles

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    Hey Jack, thanks for reaching out! The Timbren Axle-Less Trailer Suspension # TASR1THDS04 will work with your current parts, as long as the bearings and seal from your hubs match what the Timbren spindles take. The Timbren system fits with L68149 inner and L44649 outer bearings, along with a grease seal that has a 1.719" inner diameter. Let me know if you have any other questions!
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  • Timbren Axle Less Suspension for Off-Road Trailer with 5 on 5-1/2 inch Bolt Pattern
    We do have a Timbren Axle Less setup that can have the bolt pattern you are wanting of 5 on 5-1/2 inches if you went with the part # TASR1THDS04 and then the hub/drum # AKHD-555-35-EZ-K with the brake assemblies # AKEBRK-35-SA and you'd be set.
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    The Timbren Axle Less kits like the part # TASR1THDS04 that has a 4 inch lift and a 2.2k capacity can install on basically any trailer but they do not install a like a normal axle. There are three ways to install the Axle-Less suspension. The easiest method, which is recommended if you are replacing axles on your trailer, is to install a piece of 2-inch-square tubing (sold separately - available at most weld shops) through the integrated hole in the Axle-Less suspension. Then all you...
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  • Compatible Hub Drum for Timbren TASR1THDS04 Axle-Less Suspension
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  • Can TASR1THDS04 be Bought Without Spindles
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Info for this part was:

Employee Lindsey S
Edited by:
Lindsey S
Employee Jameson C
Expert Research:
Jameson C
Employee Wilson B
Updated by:
Wilson B
Employee Matthew E
Updated by:
Matthew E
Employee Ryan F
Updated by:
Ryan F
Employee Kristina F
Written by:
Kristina F
Employee Michael B
Installed by:
Michael B

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