1. Trailer Leaf Spring Suspension
  2. Timbren
  3. Axle Replacement System
  4. Axles
  5. Universal Fit
  6. 2000 lbs
Timbren Axle-Less Trailer Suspension System with Hubs - 4 on 4 - Regular Tires - 2,000 lbs

Timbren Axle-Less Trailer Suspension System with Hubs - 4 on 4 - Regular Tires - 2,000 lbs

Item # A20RS440
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Our Price: $676.41
Trailer Leaf Spring Suspension
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Timbren Trailer Leaf Spring Suspension - A20RS440
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The Axle-Less system provides a smooth, quiet, safe ride and can eliminate the need for an axle, allowing for maximum ground clearance and a low deck height. Suspension units replace your existing axle and operate independently. Fits any frame width. Lowest Prices for the best trailer leaf spring suspension from Timbren. Timbren Axle-Less Trailer Suspension System with Hubs - 4 on 4 - Regular Tires - 2,000 lbs part number A20RS440 can be ordered online at etrailer.com or call 800-298-8924 for expert service.
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  • Reviews (135)
  • Q & A (32)
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Timbren Trailer Leaf Spring Suspension - A20RS440

  • Axle Replacement System
  • Axles
  • Universal Fit
  • 2000 lbs
  • Timbren
  • 4 on 4 Inch Hub

The Axle-Less system provides a smooth, quiet, safe ride and can eliminate the need for an axle, allowing for maximum ground clearance and a low deck height. Suspension units replace your existing axle and operate independently. Fits any frame width.


Features:

  • Suspension system provides a safe, smooth, quiet ride for your trailer
    • 2 Separate units replace your existing axle
  • AEON progressive-rate main springs absorb road shock and support trailer's load
    • Deliver a smooth, stable ride, regardless of load size
    • Compress and become stiffer as load increases, boosting spring strength
  • Rebound springs act as return devices to minimize rattle and bottoming out
    • Create constant pressure on the arm, so the suspension is never completely relaxed
  • 2 Independent units can eliminate the need for a thru axle
    • Increase ground clearance
    • Lower deck height for easier loading and unloading
    • Reduce roll during cornering
    • Fit any trailer width
  • Built-in camber and toe-in help your trailer to track straight, reducing wear on the tires
  • Straight, EZ Lube spindles with hubs accept any 4-bolt wheels with regular tires
    • EZ Lube feature makes it easy to grease bearings without removing the hub
    • Spindles can be easily removed from units for simple replacement if damaged
    • Bearings, races and seals are included with hub
  • Heavy-duty steel construction with black powder coat finish resists wear and corrosion
  • Easy to install and align
    • Bolt or weld to your trailer's frame


Specs:

  • Fits: 1-axle and 2-axle trailers that use regular tires
    • Not recommended for triple-axle applications
  • Bolt pattern: 4 on 4"
  • Weight capacity: 2,000 lbs
  • Quantity: 2 suspension units with hubs
  • Spindle/Hub compatibility:
    • Bearings: L44649 inner/outer
    • Races: L44610 inner/outer
    • Seal: 10-60
  • 3-Year limited warranty


Note: The Timbren Axle-Less suspension system may require additional support on your trailer. If your trailer does not have a crossmember above the spot where you want to install the Timbren system, you may need to reinforce the frame. You can accomplish this three ways. First, you can retrofit the trailer with a crossmember. Second, you can build out the trailer frame. Third, you can use standard, 2-inch steel tubing to connect the 2 Timbren suspensions together using the built-in square hole on each unit.


Ground Clearance

Ride on rubber with Timbren's Axle-Less trailer suspension system. This one-of-a-kind suspension consists of two separate units, each containing rugged steel arms and two strong, hollow rubber springs. Overall, the system safely and effectively absorbs road shock, minimizes trailer bounce and rattle - regardless of load size - and helps to protect your trailer's components and cargo. Built-in camber and toe-in keep your trailer tracking straight to minimize tire wear. Integrated hangers attach to your trailer's frame. And 2-inch holes make it easy to reinforce your trailer's frame by adding standard, 2-inch-square steel tubing (if needed).


The Axle-Less independent suspension system replaces your trailer's existing leaf spring suspension and can eliminate the need for an axle. The independent action of the suspension reduces roll when your trailer is cornering and allows you to maximize ground clearance and minimize deck height. Your trailer can have the same side-to-side clearance as your tow vehicle. And the low deck height makes it easy to load cargo from either the rear or the side.


Because you're riding on rubber, your trailer will ride smoothly and comfortably, whether you're navigating rocky terrain or highway asphalt.


Timbren Axle-Less Suspension Parts

Components

  1. The AEON progressive-rate main spring supports the weight of your trailer and cargo and easily absorbs road shock. It is constructed of heavy-duty, hollow rubber.
  2. The rebound spring minimizes trailer bounce, rattle and bottoming out. It keeps the suspension under constant tension and ensures that the main spring compresses and expands in a controlled fashion. And it delivers a smooth, stable ride - regardless of how much cargo is on the trailer.
  3. The trailing arm and integrated hanger attach 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 urethane bushings that never require lubrication.
  5. The EZ lube spindle is simple to grease. If damaged, it can be removed and replaced, saving you both time and money.
  6. The hub accepts any 4-bolt wheel (5-bolt model shown) that has a regular tire.
  7. The built-in square hole accepts standard 2-inch tubing. If there is no crossmember above the suspension, you can easily add support to your trailer's frame by inserting 2-inch steel tubing through the hole on each suspension unit and then bolting the tubing into place.

Timbren Axle-Less Suspension versus Leaf Springs

Leaf Spring Example

The Axle-Less suspension's progressive spring is a definitive upgrade over leaf springs. Although leaf springs deliver a stable ride when supporting a load, a trailer with leaf springs will bounce and rattle when it's empty or supporting a light or off-center load. On the other hand, your trailer can bottom out on bumpy roads if the load is too heavy. The AEON progressive-rate springs of the Axle-Less suspension always deliver the same reliable performance, no matter the load size. As more weight is added to the trailer, the springs compress and become stiffer, offering more support for heavy loads. And because they rebound more slowly than leaf springs, the AEON springs do a better job of absorbing road shock, thereby keeping your trailer from bouncing and rattling when you're carrying a light load. So with this versatile system you will enjoy a smooth ride whether you're towing an empty trailer or a hefty load.


Unlike leaf springs, Timbren's Axle-Less suspension units operate independently of one another. Each spring activates only when needed. This reduces roll and delivers top-notch performance, even when you're hauling off-center loads. When your trailer with leaf springs takes a turn, one side of the suspension compresses and takes on more weight, and the other side becomes looser and bounces. This causes rattle and can make the trailer lean to one side. But when your trailer with the Axle-Less suspension takes a turn, one side compresses and becomes more rigid to absorb the weight, and the other side expands to normal height to help steady the load and minimize bounce and rattle. The load stays better balanced, even if it is off-center.


Timbren Axle-Less Suspension versus Torsion Axles

Torsion Axle Example

Timbren's Axle-Less trailer suspension system is a great alternative to torsion axles. While both systems allow either side of the trailer's suspension to operate independently, only Axle-Less suspensions are actually separate units. Torsion axles still require a bar that spans the bottom of your trailer, whereas Timbren's system can eliminate the need for a thru axle - giving you the same amount of ground clearance from the front of your trailer to the rear. It also allows Axle-Less suspensions to fit any trailer width - unlike torsion axles, which have to be fitted to an exact frame width.


Axle-Less suspensions operate in a smoother, less stressful manner than torsion axles. Torsion axles use a twisting motion, where the bar inside the axle tube rolls against rubber cords or a rubber wall to create compression and resistance. The up-and-down motion of the main spring and the side-to-side motion of the rebound spring in Timbren's Axle-Less suspension work together to provide smooth, consistent compression - with no twisting - that results in a better ride and less stress on the suspension's components.


Installing the Timbren Axle-Less Suspension

Whether you are building a trailer or retrofitting your existing trailer with the Axle-Less system, you must make certain that the trailer's frame is both perfectly square and sturdy enough to support a heavy load without the aid of a thru axle.


Install Option 1

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 need to do is bolt the suspension to the side of the trailer's frame with three bolts (not included).


Install Option 2

The second option for installation is to fabricate an inboard extension plate that attaches the trailer's frame to the Axle-Less suspension.


Install Option 3

The third method of installation is to bolt the Axle-Less suspension's hanger to the trailer's frame and to an existing crossmember that is in the area where you want to install the suspension.


With both the second and third options, you must use three bolts to attach the suspension to the side of the frame. And you also have to use two or three bolts to attach the suspension to the bottom of the frame extension, or crossmember. Both the second and third methods of installation will eliminate the need for a thru axle and provide the most clearance.


Measuring Diagram

Timbren's Axle-Less suspension units should be installed directly across from one another. Before mounting the units, measure back from the coupler and mark the frame to make sure that the two distance measurements (A and B) are within 1/8 inch of each other. Then you can drill holes through the frame and attach the hangers with Grade-5, half-inch bolts (not included).


Dimensions of the Timbren Axle-Less Suspension

Dimensions 1

Dimensions 2

Dimensions 3
Dimensions 4


A20RS440 Axleless Trailer Suspension System by Timbren - Hubs with 4 Studs on 4" Bolt Circle - Regular Tires - 2000 lbs

ASR2000S01 Timbren Axle-Less 2000S, P022 Outboard Arm Regular Spindle

88440_2 2500 lb Idler Hubs - 440 1/2" Stud - Qty 2






Customer Reviews

Timbren Axle-Less Trailer Suspension System with Hubs - 4 on 4 - Regular Tires - 2,000 lbs - A20RS440

Average Customer Rating:  4.6 out of 5 stars   (135 Customer Reviews)

The Axle-Less system provides a smooth, quiet, safe ride and can eliminate the need for an axle, allowing for maximum ground clearance and a low deck height. Suspension units replace your existing axle and operate independently. Fits any frame width.

- A20RS440
by:

excellent product, works so well. needed to lower the motorcycle trailer, and a standard axle was going to place the height of the trailer bed too high. the ride is awesome and the install was simple. i ordered on a tuesday night and had thursday afternoon. great service 633317


Comments
excellent- highly recomend, needed to lower height of motorcycle trailer and increase width so can easily carry three motos now.... over 4500 lbs !! handles great, no issues directions and install was a breeze !
C m - 04/22/2020

73929

- A20RS440
by:

Everything was as advertised! Fast shipping and well packaged! And good quality. And the best part, they respond very fast to my emails!! very nice! Don't think all be using my local retailers anymore. 556069



- A20RS440
by:

Very nice product and fast shipping, good price 516651



- A20RS440
by:

great customer support and help, wonderful advice. fast shipping and the best - great value for the dollar 505478



- A20RS440
by:

I used these parts to build a motorcycle trailer. (See attached pictures) It pulls and handles like a dream. The Atwood coupler and the Timbren axle-less suspension are both very well designed and of high quality manufacture. I would recommend these parts to anyone. 343046


Comments
I love this suspension. Even empty, the trailer huggs the road and doesnt bounce around. Its smooth as silk when loaded.
Redbone - 02/11/2018

34553

- A20RS440
by:

easy to install, works well. 320418



- A12WS545
by:

Review from a similar Axle-Less in Trailer Leaf Spring Suspension


Good product and easy to install on my new build of a off road trailer for my side by side. Thanks 628307


Comments
This has been a great product and works great and was easy to install
John V - 04/14/2020

73224

- A20RS545
by:

Review from a similar Axle-Less in Trailer Leaf Spring Suspension


This is my first time in building something like this 774926



- ASR2KHDS05
by:

Review from a similar Axle-Less in Trailer Leaf Spring Suspension


Built a custom trailer to haul an ATV on some bad rural roads in Baja. I used the 2" drop axel-less suspension to allow for full size tires and wheels yet keep center of gravity low. Easy to install on exposed frame, but note that a required brace or 2" square steel bar may be needed and sourced on your own. The finish is not very durable and does not survive the normal bumps, wrench scrapes and scratches of installation; plan on some touch up once installed. Pay attention to the spindle clearance and wheel offset. 317250



- A35RD545E
by:

Review from a similar Axle-Less in Trailer Leaf Spring Suspension


Extremely good product. Rides much better than traditional leaf springs. Ordering. A 7,000lb 8 lug set for the big trailer. 593860



- ASR1THDS03
by:

Review from a similar Axle-Less in Trailer Leaf Spring Suspension


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! 582196


Comments
We just drove 1200 miles mostly at 75mph. The axles work very well in all conditions, trailer ride very smoothly.
PhilTreeMan - 11/20/2019

63425

- ASR5200S01
by:

Review from a similar Axle-Less in Trailer Leaf Spring Suspension


A little bit pricey, at first. But in the long run they are cheaper. We used to bend or break an axle every 3 or 4 months. But we have had these a couple of years now with no problems. One thing that is nice is on a tandem axle set up you can get a flat and you just have to take the wheel off and run on 3 or 2 wheels without the hubs hitting the ground. 593458



- ASR5200S01
by:

Review from a similar Axle-Less in Trailer Leaf Spring Suspension


Timbren Axle-Less Suspension - Spindle Only - Regular Tires - 5200 lbs Item # ASR5200S01 Looks great on empty trailer, idea is good, bad execution. When loaded tires "splay out" severely, excessive tire wear, obviously too much play in system somewhere. 584361


Comments
Excessive camber which causes wear on the portion of the tire tread closest to the trailer can be caused by a few different things. 1 The axle-less suspension system has a 5200 lb per set capacity, so youll want to be sure this amount is not being exceeded. 2 The surface of the trailer that the suspension member is added to needs to be an integral part of the trailer that should have NO give in it whatsoever. Any flexing of the side member there will throw off the camber of the tires. I have seen what you describe occur when the suspension system has been mounted to tubular steel that made up the edge of the trailer frame. In that instance, some angle iron was added to stiffen things up. 3 Its not required, but a piece of 2x3 inch tube steel of the appropriate length can be used as a beam connecting the two sides, utilizing the existing hole in the axle-less suspension member. This will help stiffen things up. 4 The suspension system should have included some shims that can be used where the spindle attaches to the suspension portion of the assembly. Using these shims can decrease the camber, but only if the points mentioned above are taken care of. Ive checked with Timbren regarding the above, and they concur.
-- Mike L - 11/21/2018

45920

- A12WS545
by:

Review from a similar Axle-Less in Trailer Leaf Spring Suspension


I am pleased with the Timbren Axle-Less Trailer Suspension System with Hubs - 5 on 4-1/2 - Off-Road Tires - 1,200 lbs. I had a project and it worked out just fine. 254872



- A20RS545
by:

Review from a similar Axle-Less in Trailer Leaf Spring Suspension


I pull my Sea Doo GTX 300 (that means they are pretty heavy!) PWC's from Wisconsin to Florida twice a year. That said, this last trip to Florida caused me to bend the original straight axle on my trailer. Not fun. I ordered the Timbress Axle -less axles, and after a few hours of work on the trailer, they were installed, square and true. I immediately put the Sea Doos on the trailer to see how the trailer performs with the new axle-less system on it. one word: FANTASTIC!!!! I guarantee if I have to fix this issue again, I will use the exact same product. It is awesome! 736299



- ASR3500S06
by:

Review from a similar Axle-Less in Trailer Leaf Spring Suspension


The suspension I ordered is of high quality and I received it sooner than I expected , its good to do business with a company that produces its products so fast. 271528



- A35RS545
by:

Review from a similar Axle-Less in Trailer Leaf Spring Suspension


Had a broken torsion axle on dual axle boat trailer. Manufacter six to eight weeks to replace. Got this product in week. Installed same day. Very happy .cancelled new Axel order. 263087



- ASR2KHDS05
by:

Review from a similar Axle-Less in Trailer Leaf Spring Suspension


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. 352952


Comments
Its been a year since Ive installed the new axles on my trailer my comments above still hold true. Im very pleased with the ride quality of the system after a year. The trailer tracks true and has hauled many things other than my motorcycle. Even empty it doesnt hop around like the original stock straight axle did. No regrets on the purchase.
Pat A - 03/15/2018

35909

- A12WS545
by:

Review from a similar Axle-Less in Trailer Leaf Spring Suspension


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! 580744


Comments
I have just a little more to add regarding my purchase: Two sets, of the Timbren Axle-less assemblies, 1200 lb, and 5 wheels. I placed the order via phone, and whoever was on-call that day provided great answers and recommendations regarding the units, wheels and tires. At 31 feet, the trailer originally exhibited amplified porpoising on any bumps or dips in the road. Also bouncing and occasional sideways tipping due to the single axle. It made a lot of noise on my mountain community washboards. I speculated that the Timbren units would solve most, if not all of these problems and they have. Installation on my older 31 ft European ie, metric and no longer manufactured glider trailer was a mere 4.5 hours from removal of the old single axle to setting the trailer back down on its new assemblies. Instructions are complete, precise, useful and helpful. Appreciated. Little to comment on as installation was all straight-forward. I would like to describe the maiden voyage to the airport and back, but there is nothing to tell, other than it towed beautifully proper alignment instructions, and all that I viewed from the rear view mirror looked like a magic carpet ride. It rides over washboards and pot holes like a marathon hurdler, the 4-wheel independent suspension is great. Packaging: the shipping boxes all arrived in good condition, but the cardboard component boxes inside them... not so much. Most were ripped and open due to heavy components lightly surrounded with brown packing paper, just token amounts. Parts: all was accounted for minus a pair of spindle axle washers for one set, easily replaced at the local farm and ranch supply. No squawk, just an fyi. I am very pleased with your product and support, and was happy to leave a 5-star review with photos. The upgraded suspension was also a topic this past weekend at the glider port by those who regularly trailer their ships to various soaring events, some as far as a thousand miles away. My compliments to eTrailers, hope you can use my info,
-- comment by: Kelly F - 11/28/2018

46128

- ASR3500S06
by:

Review from a similar Axle-Less in Trailer Leaf Spring Suspension


Only been driving around on the axle-less system for about a week now and it has far exceeded expectations. I get better gas mileage, my trailer now sits like it was intended to, my trailer doesn't bounce like it used to, I wouldn't trade this axle system for any other. Just wish I would have known which outboard assembly arm my trailer needed with the axle-less system before I placed my order. Still not a problem though, plan on using the wrong outboard arm to build a different trailer. So far, a great product! 208571



- ASR2KHDS03
by:

Review from a similar Axle-Less in Trailer Leaf Spring Suspension


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! 172019


Comments
HI Matt,WHat size wheel did you use and which hub did you get to match?Appreciate the info
-- comment by: Conrad S - 04/01/2015

10523
Comments
They are GREAT! I put them on a small offroad trailer that has followed me all over some really rough roads in remote Oregon, Washington, and Idaho. They have performed flawlessly, helped the trailer tow extremely well, and were the single best upgrade I did to that trailer. Very much looking forward to another summer of exploring! Massive upgrade to the stock axle leaf spring combo, and I have had the opportunity to show it off to alot of fellow overlanders. I cant speak high enough of them. I also purchased a set of airbags for my vehicle which unfortunately have not held up terribly well. I have had to field repair one once already, and neither holds air terribly well. Truth be told they seem very underdesigned for the job they perform. From my super secret high tech pocket internet window.
Matt N - 02/06/2016

16696

- A20RS545
by:

Review from a similar Axle-Less in Trailer Leaf Spring Suspension


not happy with one lug nut missing threads!!! but I think they also could supply the wedge plate! the horizontal holes never change and the lower vertical should be slots. for the money I shouldn't have to make a plate. 202996



- A20RS545
by:

Review from a similar Axle-Less in Trailer Leaf Spring Suspension


This is my favorite suspension system in all the world! Rides like an absolute dream. Easy to set up and install. Works on any trailer frame size. One thing to know: You don't get the ride height you get with a standard leaf spring suspension. Even with 15-inch wheels, the ride height is pretty low - maybe 10-12 inches of ground clearance to the bottom of the main trailer frame. If you need more ride height, get the lifted version. A few areas of possible improvement? It's difficult to bolt the suspension unit to a crossmember using the middle bolted hole, which uses a tacked-on weld nut. You have zero room for error when drilling the hole through your cross member, and you can't really use the suspension as a template. Hmmm ... also, the hanger plate mounting holes are positioned 1-inch from the bottom of the trailer frame. That makes it very difficult, since I use channel side rails, to use standard 1/2-inch USS or SAE washers on the backside. There isn't room. Just an extra 1/4 of a inch would allow me to use standard washers underneath the nuts on a channel frame. Nitpicking aside, it's amazing. 410020



- ASR2KHDS02
by:

Review from a similar Axle-Less in Trailer Leaf Spring Suspension


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... 286117



- A20RS545
by:

Review from a similar Axle-Less in Trailer Leaf Spring Suspension


Built very rugged. I am glad this is available because all the 2K axles I found were not wide enough for my application. This setup allowed me to keep expenses down and build the trailer I wanted. 326161


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Ask the Experts about this Timbren Trailer Leaf Spring Suspension

  • Is the Timbren Axle-Less Trailer Suspension System a Good Choice for a Motorcycle Trailer
    The Timbren suspension system, like # A20RS440, is designed to be toe-in when there is no load on it. So when the load is placed on it it will push the tire out so that it is riding straight on the ground. Provided the trailer is not overloaded and the tires are trailer tires and inflated to the maximum psi as indicated on the tire, then you should not see excessive wear and get more than just a few thousand miles out of a set. A regular axle has a bow in it. That bow should be pointed...
    view full answer...
  • Recommended Replacement Axle System to Replace Torsion Axle on Snowmobile Trailer
    We don't currently carry any torsion axles. You also have a unique frame width, so I have an alternative solution for you. I recommend the Timbren Axle-Less Trailer Suspension System with Hubs - 5 on 4-1/2 - Regular Tires - 2,000 lbs # A20RS545 or the # A20RS440 with 4 on 4 inch bolt pattern. These assemblies will mount directly to your frame and then you will use a 2 inch square bar (not included) cut to length between the assemblies. If you are interested in a higher capacity or in...
    view full answer...
  • Can a Timbren Suspension System Be Installed Backwards
    I spoke to my contact at Timbren and they stated that they designed and tested their Timbren Axle-Less systems like the part # A20RS440 with the intention of it being a trailing arm suspension. Turning it around would change some of the dynamics but it could be possible that it could still work although not recommended. They advised against it since it has never been tested.
    view full answer...
  • How Well Do Timbren Axle Less Systems Work as Replacement for Pop Up Campers
    Yes, a Timbren Axle Less kit like part # A20RS440 would work well on your pop up camper trailer. These are similar to torsion style axles which are commonly found on pop ups like yours. This specific kit is a 2,000 lb axle with hubs that have a 4 on 4 inch bolt pattern which is a very popular pattern on campers as well. If your wheels instead have a 5 on 4-1/2 inch bolt pattern you'd want the part # A20RS545. These kits have the advantage of giving the trailer better ground clearance...
    view full answer...
  • Amount of Spring Deflection of Timbren Alxe-Less Suspension # A20RS440
    You are correct, the Aeon spring does indeed function as a dampener, and should not need additional dampening. Each unit is rated at a 1000 lb capacity, so two sets or four units would provide a 4000 lb capacity. The 2-5/8 inch dimension shown is the static position, but this exact dimension will depend on the construction of your trailer and how heavy it is. The engineering folks at Timbren tell me that the springs are capable of 2-1/2 inches of travel or deflection.
    view full answer...
  • Wanting a Replacement Axel that Measures 46-5/8 Inches From Spring Mount to Spring Mount
    I have a solution for you, but none of the straight axles with a 2,000 lbs capacity that we carry have the 46-5/8 inches spring mount to mount measurement. I recommend that you take a look at the Timbren Axle-Less Trailer Suspension System, # A20RS440. With the Timbren system you will do away with the single straight axle and open up your under the trailer clearance. Also, the Timbren design with its two separate axles will give you a trailer with an independent suspension which will...
    view full answer...
  • Does Timbren Axle-Less System Include Drive And Passenger Side
    Yes, when you purchase the Timbren Axle-Less Trailer Suspension System like part # A20RS440 both sides are included in the package. This system has a 2000-lb weight capacity and includes the EZ Lube spindles with the bearings, races, and seals.
    view full answer...
  • Recommended Axle-Less System with Idler Hubs and 8 Inch Tire and Wheel Combinations
    For your hostile duty portable cart/trailer, I recommend the Timbren Axle-Less Trailer Suspension System with Hubs - 4 on 4 - Regular Tires - 1,200 lbs # A12RS440 or the 2000 lb capacity # A20RS440. These assemblies only require a 2 inch square tube to be used to fit in the integrated holes if a cross bar is not present in the frame at the axle location. These spindles have the integrated hubs and suspension to make things easy and also allow greater ground clearance than a traditional...
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  • Adding Electric Brakes And Brake Drums to Timbren Axle-Less Suspension
    The Timbren Axle-Less Trailer Suspension you mentioned, part # A20RS440 uses idler hubs, not drum brake hubs. They lack a brake mounting flange, so drums could not easily be added. To use a brake assembly, you would need to upgrade to a 3500 lb capacity, like part # A35RS545E for a straight spindle or # A35RD545E for a 4 inch drop spindle. Both systems would use a wheel with a bolt pattern of 5 lugs on a 4-1/2 inch bolt circle.
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  • What Wall Thickness Should Be Used For Square Tubing To Add Support For Timbren Axle-Less System
    I called my contact at Timbren about the Axle-Less Trailer Suspension System with Hubs, part # A20RS440. I have attached a photo of a # A20RS440. The arrow on the photo is pointing to the 2 inch x 2 inch hole that is designed to be used to add additional support if needed. They told me that you should use 1/4 inch thick walls for the 2 x 2 channel.
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  • Replacement Axle Kit Options with 4-on-4 Idler Hubs
    The axles we offer that have 48-inch-spaced spring seats and 4-on-4 idler hubs are all for 2000- and 2200-lb-rated axles. Both kits are shown on the linked page. These have a 60-inch hub face spacing and we offer both standard and EZ-Lube versions. Both kits come complete with the axle, spindles, hubs, bearings, races, seals, grease, grease caps and lug nuts. Please refer to the linked video for more details. We also offer axle-less trailer suspension kits from Timbren that can be...
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  • Do the Timbren Axle Less Systems Have a Camber When Installed
    We do too! When setting up suspension on a trailer with a Timbren Axle-Less Trailer Suspension System # ASR1200S01 (or any system for that matter). It is very important to make sure everything is set up properly. The Timbren suspension system, like # A20RS440, is designed to be toe-in when there is no load on it. So when the load is placed on it it will push the tire out so that it is riding straight on the ground. Provided the trailer is not overloaded and the tires are trailer tires...
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  • Replacement Axle and Hubs for Small Boat Trailer that Used Super Lube Hubs
    We don't currently carry Tie Down products, but based on my research it looks like the only difference between the Super Lube Hubs and a standard trailer hub from any other manufacturer is that there is a grease fitting built right into the hub itself. This simply allows you to easily add grease to the hub and bearings for regular maintenance. As long as you make sure the hub uses bearings that will fit your trailer spindle, there is no reason you couldn't use a Super Lube Hub on a different...
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  • Estimated Weight Capacity of 41mm Square Trailer Axle
    Thank you for the photo of your boat trailer's square axle. Typically a square trailer axle that measures 41mm (1.6-inches) on a side will have a weight rating of 1800- or 2000-lbs. We offer one such 1800-lb-rated axle, CE Smith Trailer Axle # CE33201GA-HUB which includes idler hubs, and # CE33201GA which is the axle beam/spindles only. We also offer Timbren axle-less trailer suspensions that entirely do away with the axle beam and leaf springs. These bolt-on kits like # A20RS440...
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  • Replacement Hub and Axle for 2007 Triton LT Trailer
    For your replacement axle and hubs, I recommend the Timbren Axle-Less Trailer Suspension System with Hubs - 5 on 4-1/2 - Regular Tires - 2,000 lbs # A20RS545 or the 4 on 4 inch hubs of the # A20RS440. These replacements contain Aeon rubber suspension and have EZ Lube spindles for easy maintenance. They do require a 2 inch square tube (not included) to join the assemblies utilizing the integrated holes. This would be a great upgrade for you. If you just want to replace the hubs,...
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  • Replacement Axle Recommendation For Small Popup Camper
    The axles we offer are available in 3 lengths. They are 60 inch, 72 inch, and 89 inches hub-face to hub-face, but I may have a solution for you. We do offer axle-less systems that are either bolted or welded to the trailer frame. This would replace the axle and suspension system you currently have on your camper. If you are looking for a system that has a 3,500 lb weight capacity, I recommend part # A35RS545. This is a straight spindle and has a 5 on 4-1/2 bolt pattern. For a system...
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  • Recommended Axle Replacement for Jayco Eagle 12 UDK
    For your Jayco Eagle 12 UDK trailer, we only have the Timbren Axle-Less Suspension systems as replacements for your torsion axles whether they are the Dexter Torflex or not. These simply mount to your frame and use a 2 inch square tube (not included) between the assemblies into the integrated holes for supports. The Aeon rubber is your suspension system and works very well to replace torsion axles and will help keep tire wear to a minimum. I recommend the Timbren Axle-Less Trailer...
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  • How to Determine Replacement Bearings and Seals for 1970s Popup Camper
    You are correct that the process of removing old grease seals can distort their shape and make it tougher to measure their inner and outer diameters. Part numbers from the originals are the preferred way to find replacement parts but the other option is to measure your spindles at the various points where the seal and bearings ride. The linked diagram shows you these points on the spindle that you can measure with your digital caliper. This is more reliable than measuring the old parts...
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  • Replacement Axle for Early 80s Coleman Pop-Up Camper Trailer
    None of our beam trailer axles have the 53-inch hub face and 41-inch spring center dimensions of the original axle on your older Coleman pop-up camper trailer. The closest axle kits we have are parts # CE33201GA and # CE33201GA-HUB, both rated for 1800-lbs. These are 57-1/2-inches from hub face to hub face and have spring centers at 46-1/2-inches. However, we do have another option that will allow you to replace the axle: a Timbren axle-less suspension kit. These unique trailer suspension...
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  • Recommended Trailer Axle Kit for Fabricating Off-Road Utility Trailer
    If you are building your own firewood hauling trailer you might want to consider one of our Timbren axle-less suspension kits. These are available with idler hubs and some also have lifted spindles that can give you better ground clearance (for use in the woods when gathering your firewood). We do have standard beam axle kits too but the Timbrens can be the ideal way to go for fabricators that want an effective but simple installation of their trailer suspension. The linked page will...
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  • How to Choose the Correct Timbren Axle-Less System
    In order to choose the correct Timbren Axle-Less Suspension, you will need to know what capacity you need; the Timbren systems have capacities that range from 1,200 lbs to 7,000 lbs. For example, the Timbren # A35RS545 has a 3,500 lb capacity and has idler hubs with a 5 on 4-1/2" bolt pattern while the # A20RS440 has a 2,000 lb capacity with hubs that have a 4 on 4-1/2" bolt pattern. I've added a link to a video review of the Timbren systems for you as well as a link to our page with our...
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  • Recommended Replacement Axle for Custom Width Trailer
    Unfortunately we don't have any axle shaft sleeves the size you are seeking. We also do not have 23 inch slipper springs. It sounds like you have a one off system with even your axle length. The best thing I can offer you is the Timbren Axle-Less Trailer Suspension System with Hubs - 5 on 4-1/2 - Regular Tires - 2,000 lbs # A20RS545 or if you have the 4 on 4 inch bolt pattern # A20RS440. This will mount to your frame to give you custom suspension and custom width. You simply use a...
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  • Converting Single Axle Trailer to Double Axle
    To convert your single axle trailer to a double axle, you will want to start with some basic measuring. Then you will want to determine if you will be we matching your current axle or replacing it. If you are matching your current axle, you will need to get the spring seat to spring seat dimensions and the hub face to hub face dimensions and I can assist from there. The easiest option is to replace your axle and use the Timbren Axle-Less Trailer Suspension System with Hubs - 5 on 4-1/2...
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  • Recommended 10 Inch Wheels For Custom Trailer Application
    If you are using axles like the Dexter Trailer Axle with Idler Hubs - 4 on 4 Bolt Pattern - 72" Long - 2,000 lbs # 20440I-ST-72, you can use 10 inch wheels like the Kenda 205/65-10 Bias Trailer Tire with 10" White Wheel - 4 on 4 - Load Range E # AM3H460. When building a trailer you want to make sure that you have the capacity you need for your load compatible with the lowest/weakest component in your system. For 10 inch wheels you are looking at 2000 lb axles, so you may want a...
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  • Timbren Axle-Less Trailer Suspension System Recommendation for a 1977 13 ft Scamp Trailer
    Converting a torsion axle trailer to a trailer with a Timbren Axle-Less Trailer Suspension System has been done before and most people who have done this really prefer the smoother ride and increased ground clearance. Timbren Axle-Less trailer suspension system is a great alternative to torsion axles. While both systems allow either side of the trailer's suspension to operate independently, only Axle-Less suspensions are actually separate units. Torsion axles still require a bar that...
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  • Availability of 6-1/2-Inch Spindles for Use on Tandem Axle Off-Road UTV Trailer
    You can view all spindles by clicking on the link provided. We offer two spindles with the 6- to 6-1/2-inch stub length you're looking for, parts # R2061-284 and # R50642. Part # R2061-284 has a 6-1/2-inch stub, 1-3/4-inch diameter and is rated for a 3500-lb axle. Part # R50642 has a 6-inch stub of 2-1/4-inch diameter and it is rated for a 5000-lb axle. In order for your existing hubs to fit either of these spindles they will have the use the matching bearing set. Spindle # R2061-284...
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  • Replacement Axle Options for Homemade Trailer
    Thank you for the photos of your homemade trailer axle. It appears that this part uses straight 1-inch threaded pipe in place of actual trailer spindles. Since this is likely to be difficult to match up to readily available trailer hubs I suggest replacing the entire axle with a complete kit. We do sell spindles, but these are not a DIY-type project since their proper installation requires specialized jigs to ensure the spindle is perfectly straight and concentric. Spring center spacing...
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  • Will Timbren Axle-Less Suspension Fit a 1988 Jayco Dove 6 Trailer
    You have what sounds like a torsion axle. There are many different types of torsion axles. It could be that the axle insides are worn out. That can happen. But it could also be a bent component such as a spindle. All sorts of things can cause tire wear such as a worn torsion axle, bent spindle, overloading, worn bearings or other running gear components. A Timbren axle-less suspension system such as # ASR2000S01 will work great for you. This particular set up uses hubs with L44649 inner...
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  • Recommended Trailer Axle for 2006 Triton XT Trailer
    We do sell complete axle systems with hubs, but I need more information. If you have torsion axles, then I recommend the Timbren Axle-Less Trailer Suspension System w Hubs like # A20RS545 or # A20RS440 for a 4 bolt hub as a simple bolt on replacement. These come in various weight capacities. If you have round through axles, then I need to know what the face to face measurement is, what the spring seat to spring seat measurement is on center, and what the GVWR of your trailer is.
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  • Recommended Replacement for 75 inch Axle with 61 Inch Frame
    For your Adams Drift Boat Trailer, the dimensions you gave will work only with our Timbren Axle-Less Trailer Suspension System with Hubs - 5 on 4-1/2 bolt pattern # A20RS545 or 4 on 4 inch bolt pattern # A20RS440. Both these systems will bolt directly to your trailer frame and have the integrated rubber spring for suspension. They will fit any frame width and require a 2 inch square bar (not included) to fit into the integrated holes for support. They will give you more ground clearance...
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Info for this part was:

Expert Research:
Mike L
Expert Research:
Michael H
Expert Research:
Jameson C
Expert Research:
Adam R
Expert Research:
Jeffrey L
Written by:
David L
Installed by:
Randy B
Video by:
Zach D
Updated by:
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