1. Trailer Leaf Spring Suspension
  2. Timbren
  3. Axle Replacement System
  4. Axles
  5. Universal Fit
  6. 3500 lbs
Timbren Axle-Less Trailer Suspension System w Hubs - 4" Drop Spindle - 5 on 4-1/2

Timbren Axle-Less Trailer Suspension System w Hubs - 4" Drop Spindle - 5 on 4-1/2

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Our Price: $797.13
Trailer Leaf Spring Suspension
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Shipping Weight: 112 lbs
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Timbren Axles - A35RD545
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The Axle-Less system provides a smooth, quiet, safe ride and can eliminate the need for an axle. Suspension units replace your existing axle and operate independently. The 4" drop spindle allows for a low deck height. Fits any frame width. Lowest Prices for the best trailer leaf spring suspension from Timbren. Timbren Axle-Less Trailer Suspension System w Hubs - 4" Drop Spindle - 5 on 4-1/2 part number A35RD545 can be ordered online at etrailer.com or call 800-298-8924 for expert service.
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  • Reviews (156)
  • Q & A (21)
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  • Why etrailer?

Timbren Trailer Leaf Spring Suspension

  • Axle Replacement System
  • Axles
  • Universal Fit
  • 3500 lbs
  • Timbren
  • 5 on 4-1/2 Inch Hub

The Axle-Less system provides a smooth, quiet, safe ride and can eliminate the need for an axle. Suspension units replace your existing axle and operate independently. The 4" drop spindle allows for a low deck height. 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
  • 4" Drop, EZ Lube spindles with hubs accept any 5-bolt wheels with regular tires
    • 4" Drop provides lower ground clearance
    • 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: 5 on 4-1/2"
  • Weight capacity: 3,500 lbs
  • Quantity: 2 suspension units with hubs
  • Spindle/Hub compatibility:
    • Bearings: L68149 inner, L44649 outer
    • Races: L68111 inner, L44610 outer
    • Seal: 10-19
  • 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, 4" drop spindle (straight model shown) is simple to grease. If damaged, it can be removed and replaced, saving you both time and money.
  6. The hub accepts any 5-bolt wheel that has a low-pressure, 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 sandwiches 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


A35RD545 Axleless Trailer Suspension System by Timbren - 4" Drop Spindle - Hubs with 5 Studs on 4-1/2" Bolt Circle - Regular Tires - 3500 lbs

ASR3500S04 Timbren Axle-Less 3500S, P019 Outboard Arm 4" Drop Spindle w/ Brake Flange

88545_2 3500 lb Idler Hubs - 545 1/2" Stud - Qty 2

Item # A35RD545






Customer Reviews

Timbren Axle-Less Trailer Suspension System w Hubs - 4" Drop Spindle - 5 on 4-1/2 - A35RD545

Average Customer Rating:  4.6 out of 5 stars   (156 Customer Reviews)

The Axle-Less system provides a smooth, quiet, safe ride and can eliminate the need for an axle. Suspension units replace your existing axle and operate independently. The 4" drop spindle allows for a low deck height. Fits any frame width.

- A35RD545
by:

enclosed are pics of trailer and spindle units. I was very happy with the end result, lowering ez loader trailer 8 inches for hovercraft. the spindle units were well made, very strong but had some weld repairs as pictures show.i could not set the needed adjustments till I cleaned up the units with a stone and file. also please improve the packaging . these heavy units need something better than cardboard for shipping. they were dislodged from Styrofoam and partially poked holes thru cardboard. but fortunately no damage there. again im happy with the installation.thank you!!! 506119



- A35RD545
by:

Good heavy duty product 219360


Comments
Axles work great
Jason m - 08/13/2016

20207

- 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



- 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



- 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

- A20RS545
by:

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


These units install easily, are well made, and perform great! The trailer doesn't bounce around like you see a lot of trailers do while traveling down a bumpy road. I traveled some unpaved roads with no issues. I am certainly glad I went axleless. I installed with 15" tires. Problem is I didn't go big enough. I intended to install on an existing trailer that I had. Changed my mind and built a new trailer. The new trailer came in heavier than I had planned. 2k pound capacity is now too small. I have to watch what I load the trailer with so I don't over load the suspension. I intend on buying the 3500 pound units when I have the money. 289894



- 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



- 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

- A20RS545
by:

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


So far great! I used one of the Timbren Axles in a mountain trail camp/SAR trailer I just finished building. I have only had the trailer on roads because all the trails I want to try it on are still under snow...but it is melting fast. I have included a couple of photos. 612696



- A20RS545
by:

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


Only axle I could find to fit my application. Very cool product. Fast delivery. Easy instructions 642073



- 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


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


I wanted to give a lot star, but I spent three months because you missed parts of me a few times. Anyway it is very good for the product. 563720



- 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



- A20RS545
by:

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


This suspension system did EXACTLY what I wanted. I replaced the leaf springs, axle/hubs on my small trailer. The new suspension improved the capacity, lowered the bed 4+inches, improved ground clearance and allowed me to rebalance the trailer all WITHOUT having to have any welding done. Everything needs to be measured very exactly and the alignment technique is fairly cumbersome and takes a bit of time. In the end, I have a quiet, steady, strong, low riding trailer. What more could you ask for 517553



- 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



- A20RS545
by:

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


Received my order. Quality is very good. Intend to use on fishing shanty frame. I thought that the wire I ordered was 4-wire round, not flat. That was my preference but I guess I should have inquired prior to ordering. I feel that the quality of the flat wire could be better. All other products are very nice and I am happy. Service was excellent. Thank you 242026



- 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

- 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



- A20RS545
by:

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


I bought these to replace an axle on an older trailer that I could not buy a replacement axle from the manufacturer. They are well made, a correct fit and the Customer service could not be better. Due to the careless handling of the shipper, a component of the product was damaged. With a simple phone call, I was able to have a replacement part shipped out that day. I would recommend everyone to shop here before going to their manufacturer! 721618



- A20RS545
by:

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


This is my first time in building something like this 774926



- 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

- 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



- A12WS545
by:

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


Impressed with quality and strength of these 1/2 axles. Very impressed. Will be buying more. Also, website easy to navigate. Sudden service and rapid delivery. Thanks. 936366


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Ask the Experts about this Timbren Trailer Leaf Spring Suspension

  • Can Timbren Axle-Less Trailer Suspension System be Used in Place of Torsion Axles on Travel Trailer
    Yes, you could use the Timbren Axle-Less system # A35RD545 in place of straight axles on your travel trailer. This system basically works similarly to torsion axles with the suspension built in. Since this system is rated for 3,500 pounds though you would likely notice a stiffer ride since the trailer will not weigh enough to compress the suspension the way it does with the two 2,500 pound axles. I have included a link to all of the Timbren systems we carry. The system you referenced...
    view full answer...
  • Trailer Height When Using Timbren Axle-less System with 4 Inch Drop
    The exact height of the deck will depend on other factors with your trailer. However, I can tell you that the spindles of the Timbren Axle-less System # A35RD545 sit pretty much at even height as the location where they connect to a trailer's frame. Knowing that, if you know the tire size you'll be using and divide it in half you'll know the height the spindles will be off the ground. We can factor in that the weight of the trailer on the Timbrens will cause them to ride slightly...
    view full answer...
  • Will a Kenda 205/65-10 Bias Trailer Tire with 10" White Wheel Fit on Timbren Axle-Less System
    Yes, the wheel and tire part # AM3H480 is going to have plenty of clearance to install on the Timbren Axle-Less Trailer Suspension System w Hubs # A35RD545. This axle system would give you 6 inches of clearance from the hub face to the frame of the trailer so the rim would have plenty of clearance to fit.
    view full answer...
  • Can Air Be Released From Timbren Axle-Less System to Lower Ground Clearance
    The Timbren Axle-Less Trailer Suspension Systems, like the 3,500 Pound # A35RD545 that you were looking at, feature independent AEON springs for load support. These are not air springs but durable hollow rubber springs, so they aren't something that you can adjust the air pressure for or empty out when needed to decrease your ground clearance. This particular system does have a 4" drop spindle though, which will lower the overall deck height of the trailer for easier unloading/access....
    view full answer...
  • Will 3,500 lb Timbren Axle-Less Trailer Suspension System Work With Disc Brakes
    The Timbren Axle-Less Trailer Suspension System such as the part # A35RD545 you referenced can be mounted to any trailer frame so long as there is an existing crossmember where you want to instal it, or you can install a piece of 2-inch square tubing to the frame and bolt it to that. So the short answer is yes, the Timbren system will work for you. That said, the Timbren System # A35RD545 you referenced already has hubs so if you already have hubs you will need the Timbren Axle-Less...
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  • Available 3,500 lb Timbren Axle-Less System Without Electric Brakes
    There is a Timbren Axle-Less Trailer Suspension System similar to # A35RD545E but does not have electric brakes. The # A35RD545 has the same 3,500 lb capacity with a 4" drop spindle and idler hubs. The hubs have a 5 on 4-1/2" bolt pattern with inner bearing # L68149, outer bearing # L44649 and grease seal # RG06-050. I've added a link to a video review of the Timbren Suspension System for you to take a look at as well.
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  • Suspension and Tire/Wheel Upgrade Needed for a 3,500 lb Trailer Axle
    If you already have the axles installed then I would need to know the size of your hub as well as the bolt pattern on your hub as well to make a recommendation. I have attached a helpful article on bolt patterns for you to reference. If you don't know the diameter of your hub just let me know what the weight capacity is and I should be able to help you from there.
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  • Will the Timbren Axle-Less Suspension System Work on an Aluminum I-Beam Boat Trailer
    You may be able to use the Timbren Axle-Less Suspension System, # A35RD545, on your aluminum boat trailer as long as you can find a way to bolt it to the frame. The frame brackets for the Timbren Axle-Less systems bolt to the outboard side and bottom of the frame rail. You will need to weld an aluminum plate to the outboard side of the frame for the side bolt holes and you will want to make sure the bolts for the bottom of the frame will not hit the center web of the frame. The underside...
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  • Is the Dexter Drop Tube Trailer Axle Beam Offered with 64 Inch Hub Face and 3,500 Lb Capacity
    The best option I have for you is the Timbren Axle-Less Trailer Suspension System part # A35RD545 which has a built-in drop of 4" and comes with idler hubs that have a 5 on 4-1/2" bolt pattern. In regards to hub face, this can be adjusted to fit any width. The hub face measurement you are looking for of 64" is very uncommon for this axle capacity so we would not have a Dexter Trailer Axle Beam that matches this.
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  • How to Select Replacement Trailer Axle
    The features you need to match up when selecting a replacement trailer axle are 1) weight capacity; 2) the hub face dimension; and 3) the spring center dimension. Please refer to the linked diagram. It sounds like you may have a torsion type axle (that does not require leaf springs) that has what is called a drop spindle, one that allows the trailer deck height to be lower to the ground. Similarly, a lift spindle does the exact opposite; it lifts the trailer height relative to the spindle....
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  • How to Pick Spindle Drop, Lift or Straight for Timbren Axle Less System
    The style of spindle needed will be determined by what height would work the best. The drop spindles of # A35RD545 will put the axle center 1/4 inch below the bottom of the trailer frame. The 4 inch lift part # ASR35HDS02 will have that distance at 7-5/16 inch. The straight spindle part # A35RS545 will have that dimension right at 4 inches. I attached a diagram of this kit that shows the spindle height of 4 inches.
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  • Axle-Less Recommendation For Trailer With 72 Inch Frame Width
    All of the 3,500 lb axles like part # 35545E-ST-EZ-89 we offer have the center to center spring seats at 74 inches. We do not offer an axle with the seats placed at 72 inches as you mentioned. An option you may want to take a look at is to weld new spring seats like part # TRSS238, onto the new axles. You should make sure this is done by a certified welder. Another option you may wish to consider is the axle-less system like part # A35RD545E. This system will attach to any frame...
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  • Smallest Diameter Trailer Tire with At Least 1,800 Pounds Capacity and Parts for Building a Trailer
    Assuming the trailer is as single axle and only has two tires the smallest we carry is a 205/75-14 size tire. The Goodyear # 724864519 measures 26.14 inches in diameter and has a weight capacity of 2,040 pounds at 65 psi. You also want to make sure the wheel has enough capacity. If you can tell me your bolt pattern I can recommend a wheel as well.
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  • Replacement for 3,500 lb Axle on Enclosed Trailer
    We do have a fantastic option for your enclosed trailer that has a 3,500 lb axle based on my research (though you will want to verify this); however, we do not offer torsion axles. The option we do carry is going to be a better one, the Timbren Axle-Less Trailer Suspension System, which are simply bolted or welded so you do not have to worry about finding an axle that meets any specific measurements. They also offer you an improved ride compared to a traditional through-axle because...
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  • Replacement Idler Hubs for Antique Home-Made Trailer with 3500-lb Axle
    All of the idler hubs we offer for 3500-lb axles use the same bearing set, L68149 and L44649, and in fact none of the idler hubs we sell have the bearings used in your existing hubs - please see linked page. This means that you will need to have a professional welder change out your spindles - or instead do what I suggest - change out your axle entirely. Since your trailer is "antique" there is an obvious safety benefit to replacing the entire axle/spindle/hub assembly. You will also...
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  • How to Select Replacement Trailer Hubs
    Thank you for submitting your photo of your trailer spindles. To select compatible replacement hubs that have the 5-on-4-1/2-inch bolt pattern you want you will need to match up several characteristics to your existing hubs. You will need to match the axle's capacity and also either the bearing numbers or bearing diameters, as you have provided. I was able to find only a little information about the bearings (axle cone runners) you referenced, parts 909501 and 909502. They reportedly...
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  • Which Timbren Axle-Less Suspension for 3500lb Capacity Low-Deck Car Hauler
    The Timbren Axle-Less suspension system is a good choice. They offer a 4 inch drop spindle model, part # A35RD545 includes idler hubs and # A35RD545E includes electric brake hub drums. These are good for a total 3500 lb capacity, which includes the weight of the vehicle and the trailer. This would be a good option for a car carrying trailer with a low deck height. At rest, the center of the spindle would sit even with the bottom of the trailer frame, and at maximum deflection, the center...
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  • Timbren Axle-Less Suspension System to Lower Trailer Deck Height
    There is a safe and effective way to lower your trailer height, Timbren 3500-lb Axle-Less Suspension Kits like # ASR3500S04. This bolt-on kit completely replaces your beam axle, leaf springs and hangers and it is designed with 4-inches of drop in the spindle height. You get lower deck height without compromising ground clearance and also a fully-independent suspension! Please check the linked video for more details on these Timbren suspension units. The easiest install method uses 2...
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  • Recommended Axle-Less Trailer Suspension With Drop Spindle For Older Coachman Camper
    We have axle-less systems that are designed with a drop spindle but we do not offer a standard axle with a drop as you said you have on your trailer. We Have axle-less systems like part # A35RD545E that has electric brake hubs and has a 4-inch drop spindle. The bearings, races, and seals are included and the wheel bolt pattern is 5 on 4-1/2. For an axle-less system with idler hubs and a 4-inch drop spindle I recommend part # A35RD545. Both of these systems have a 3,500-lb weight...
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  • Available Timbren Axle-Less Suspension System Rated For 3,500 Pounds
    We have two Timbren, 3,500 pound systems with idler hubs, the Timbren Axle-Less Trailer Suspension System with Hubs - Strait Spindle - 5 on 4-1/2 # A35RS545 and the Timbren Axle-Less Trailer Suspension with Hubs - 4 Inch Drop Spindle - 5 on 4-1/2 # A35RD545. Both of these systems are designed to mount wheels that have a 5 on 4-1/2 bolt pattern. Both the # A35RS545and the # A35RD545 have 3,500 pound weight capacities and feature EZ-Lube Spindles. When choosing tires and wheels for...
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  • Availability of Trailer Axles with Drop
    The dropped axle option is the single most popular option for tiny house trailers made by tinyhouse basics, according to their website. This feature allows a 4-inch lower deck height for more interior headroom and easier entry. We do offer the axle-less Timbren trailer suspension kits that offer drop. Examples include the 3500-lb-rated Timbren kit # A35RD545E which features electric brakes with 5-on-4-1/2 hub/drums and the idler hub kit # A35RD545. These suspension kits bolt (or weld)...
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Info for this part was:

Expert Research:
Michael H
Expert Research:
Jameson C
Expert Research:
John H
Written by:
David L
Installed by:
Randy B
Video by:
Zach D

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