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 - Straight Spindle - 5 on 4-1/2 -

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

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Our Price: $852.07
Trailer Leaf Spring Suspension
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Trailer Leaf Spring Suspension A35RS545 - Axle Replacement System - Timbren
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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 w Hubs - Straight Spindle - 5 on 4-1/2 - part number A35RS545 can be ordered online at etrailer.com or call 800-298-8924 for expert service.
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  • Reviews (135)
  • Q & A (99)
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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, 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 5-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: 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 spindle 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 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


A35RS545 Axleless Trailer Suspension System by Timbren - Hubs with 5 Studs on 4-1/2" Bolt Circle - Regular Tires - 3500 lbs

ASR3500S05 Timbren Axle-Less 3500S, P020 Outboard Arm Straight Spindle w/ Brake Flange

84545_2 3500 lb Idler Hubs - 545 1/2" Stud - Qty 2

Item # A35RS545






Customer Reviews

Timbren Axle-Less Trailer Suspension System w Hubs - Straight Spindle - 5 on 4-1/2 - - A35RS545

Average Customer Rating:  4.6 out of 5 stars   (134 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.

- A35RS545
by:

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



- A35RS545
by:

I was amazed at the attention given to me and my order. I was kept up to date untill my order arrived, it also arrived a few days before the expected time. The axle less system looks to be so much easier to install and more functional than the regular spring suspension. If compared by cost and labor to the other spring system, I find that this is considerably less. I have yet to install it, but will send photo of finished product as soon as possible. 178367



- A35RS545
by:

Still working on it but so far I am very please with my purchase 745225



- A35RS545
by:

Customer service was excellent and the products were well priced 738058



- A35RS545
by:

Ashley was extremely helpful and quick to respond to my questions both via phone and email. Excellent customer service and quick turn around on my order. 737883



- A35RS545
by:

I rebuilt a 4 x 8 trailer using the Timbren Axle-Less Trailer Leaf Spring Suspension and it works great. I would recommend it to others. 706969



- A35RS545
by:

Fast delivery, exactly what I needed to repair my boat trailer. Good quality, easy installation... 470022



- A35RS545
by:

GREAT PRODUCT BUT THE BEST OF ALL IS CUSTOMER SERVICE, THEY ARE ALWAYS HELPFUL 286543



- A35RS545
by:

I have not installed them yet but looking at them they look like they are going to be easier than I expected. 166589



- A35RS545
by:

Just what I wanted. This is a great productions Etrailer did a great job thank you. We will be doing more business soon. 160716



- A35RS545
by:

have not opened the boxes yet 159458



- 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



- 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
30
191
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Ask the Experts about this Timbren Trailer Leaf Spring Suspension

  • LT Tire Compatible with 15 x 6 Inch Dexstar Conventional Steel Trailer Wheel
    The largest tire we sell that would be compatible with the # AM20504 15x6 wheel you referenced would be # TTWA12WM. The tire is 29.4 inches in diameter and would work well for your application. The tire is a Load Range E, which has a 2403 lb per tire or 4086 lb per axle capacity when properly inflated to 70 psi. The Baby Moon hubcap that's compatible with that wheel is part # AM90086. We do not carry the chrome trim rings at this time. I've linked you to some help...
    view full answer...
  • Replacement Axle Needed for a Boat Trailer with 86 Hub Face and 67-1/2 Spring Center Measurements
    I do have a solution for you but unfortunately we don't carry any axles that fit the specific dimensions that your current axles has. Instead we have the Timbren Axle-Less Trailer Suspension System # A35RS545. This system comes with hubs that have a 5 on 4-1/2" bolt pattern (which should be what you have) and will not require you to use leaf springs anymore. These also include brake mounting flanges in case you would like to add brakes to your boat trailer at a later time. I have...
    view full answer...
  • Is the Timbren Axle-Less Suspension A35RS545 Compatible with Hydraulic Disc Brakes
    Yes, you most certainly can use hydraulic disc brakes with the Timbren Axle-Less Trailer Suspension System w Hubs # A35RS545. This Timbren system already has a brake mounting flange installed on it so if you already have your trailer setup with disc brakes that install on a 4 bolt brake mounting flange, like the Kodiak Disc Brake Kit # K2R35D, then you will be good to go. Otherwise you can use a disc brake kit that uses the common surge actuator, like the Titan Disc Brake Kit # T4843300,...
    view full answer...
  • Axles Needed to Build Off Road Trailer
    We do have a torsion type of axle that would be perfect for your application. I advise against using Jeep tires on your trailer. Passenger car tires have a sidewall that is a little more flexible and cannot perform as well as trailer tires on a trailer. The Timbren Axle-Less Trailer Suspension System w Hubs # A35RS545 are a great option to use because they are much easier to install than standard axles and they add ground clearance since they do not have a thru-axle. Basically how you...
    view full answer...
  • Recommended Timbren Axle-Less Trailer Suspension System for Boat Trailer
    To fit your boat trailer, I recommend the Timbren Axle-Less Trailer Suspension System w Hubs - Straight Spindle - 5 on 4-1/2 # A35RS545. This system will have the hubs you need as well as the suspension so you don't need to work about the leaf springs. This is a universal fit, so the odd sizing of your current axle and spring centers won't be an issue. You will just need to get a 2 inch square bar to attach to the integrated holes in this assembly. I've attached a video to help,...
    view full answer...
  • Replacement Options for Axle with Spring Center Measurement of 70 Inches
    Although we do not offer an axle with a spring center length of 70 inches, I do have a solution. Take a look at our Timbren Axle-Less Trailer Suspension System, # A35RS545. This is a universal axle design that fits any frame width and comes with hubs as well. If you prefer to go with a straight axle, I recommend contacting a local company to have one custom ordered. You will need to give them the hub face to hub face dimension as well as the spring center dimensions that you gave me.
    view full answer...
  • Replacement Trailer Axle for Triton Boat Trailer
    We definitely have a great option for you, though we do not have a traditional trailer axle with those dimensions. Instead, I very strongly recommend the Timbren Axle-Less Trailer Suspension System. These are the best option because they give you an improved ride compared to a traditional through-axle. The Timbrens work independently from one another so if there is a bump on one side of the road it won't rattle your entire trailer; this is also true because the Timbrens have progressive...
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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...
    view full answer...
  • Trailer Suspension Lift Kit for 2004 Starcraft Centennial 3600 with Single Torsion Axle
    A pop-up camper trailer like your 2004 Starcraft Centennial 3600 will have either a leaf spring suspension, a torsion axle suspension or if it was modified by a previous owner it could have a Timbren axle-less suspension kit like # A35RS545. Torsion axles do connect directly to a trailer frame and their rubber cord "springs" are internal, inside the axle tube. Chances are this is what you have if you don't see any leaf springs. We do have lift kits # K71-384-00 and # K71-385-00 for...
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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...
    view full answer...
  • Tiny House Trailer Third Axle Availability
    Ideally when you add a third axle to your trailer you would reposition the current two so that the all of the axles would be appropriately placed. Basically you would want the middle axle to end up where you current center hanger is for your leaf suspension. A standard axle would probably be easier to match up to your trailer but the Timbren part # A35RS545 would bolt to your trailer frame and would place the hub centers right at 4 inches below your frame. If that height matches up with...
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  • Are There 5-Lug Hubs for a Military Trailer with Timken 15118 and 09074 Bearings
    I do have an option for you but we do not have any 5-lug hubs with the bearings that you listed because they are not common sizes. I don't think you are going to be able to find a new 5-lug hub that uses these bearings because again they are not very common therefore the only option you really have to obtain a 5-lug hub is with a new axle. For this, I recommend taking a look at the Timbren Axle-Less Trailer Suspension System. This system will be ideal for a military trailer because there...
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  • Recommendation on Timbren Axle-Less Trailer Suspension Using 31-32 Inch Tires on a Custom Trailer
    Between the two systems that you referenced, the Timbren Axle-Less Suspension System, # A35RS545, rated at 3,500 lbs with a bolt pattern of 5 on 4-1/2, would be option I recommend to use for your trailer build. The Timbren Axle-Less system will give a 3,500 lbs rated axles that will open up your under the trailer clearance that will be helpful in off-road conditions. Also, because these axles are not traditionally connected to together, the Timbren system acts like a independent suspension...
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  • Should Trailer Axle Be Bowed Down in Middle
    A trailer axle should actually be bowed upwards in the middle and not downwards. When the trailer is loaded with your boat, that upward bow will flatten out and your tires will make even contact with the ground. The downward bow of your axle should not be happening so you should be sure you aren't overloading your axle. I recommend replacing your axle and ensuring you stay under the axle capacity. You can also eliminate the issue of axle bow by using a Timbren Axle-Less Suspension like...
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  • Needing New Trailer Hub for a 1962 Aloha 16 foot Trailer
    I do have a way that you can put replacement hubs on your 1962 Aloha Trailer, but unfortunately we do not have any hubs that use those bearings. If you are restoring or updating this trailer then it may be easier to just replace your axle so that you can easily find replacement parts. You can try matching the leaf spring and spring center measurements of our standard axles so they match with your trailer, but I recommend using a Timbren Rubber Spring Suspension instead. The Timbren...
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  • Can Adding a Second Axle to a Trailer Increase It's Weight Capacity
    You'd want to first determine the overall capacity of the trailer to be sure that with more axle capacity you would end up with more total capacity. The capacity for a trailer is more than just the axle capacity. The frame of the trailer, coupler, safety chains etc all have individual weight ratings and you have to go with the lowest rated component as the overall weight capacity. Your current axle will have to get removed because it will at least need to get moved forward or back so...
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  • Replacement Axle Needed for a 2012 Bass Tracker Boat Trailer
    You are on the right track and we do have a solution for you, but it means you will change out your suspension as well. There are replacement spindles but since they have to be installed precisely by a professional welder it is much more safe to go with the new axle system. What we do have are the Timbren Axle-Less Trailer Suspension Systems like part # A35RS545 which have the suspension integrated into them. This specific system is rated for 3,500 lbs, comes with brake mounting flanges,...
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  • Recommended 3,500 lb Axle Upgrade on 4x6 Utility Trailer
    For a 4x6 utility trailer, I recommend the Timbren Axle-Less Trailer Suspension System w Hubs - Straight Spindle - 5 on 4-1/2 - # A35RS545. This system is a universal fit and simply needs to be mounted to your trailer frame. It includes the hubs and the suspension to replace any leaf springs, so you simply add the 2x2 steel bar (not included) in the integrated holes and cut to length. Then bolt it on, add your wheels/tires and you will be all set. We don't have a thru-style axle...
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  • Troubleshooting Trailer Tire Camber on 1999 ShoreLandr Double Jet Ski Trailer with Torsion Axles
    Because your tires are tilted in at the top and are not equal side to side, it sounds like you are overloading the axle or the torsion coils aren't working as they should. Trailer axles are intended to be slightly bent upward when unloaded so that under the proper weight capacity they level out and don't have a camber. Having that camber will most definitely wear your tires unevenly as the weight and friction will be on the inside edge of your tires. If you are interested in correcting...
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  • Axle Setup Recommendation for Installing on Movable Shed
    Typically for applications like yours the Timbren Axle Less system like part # A35RS545 which has a 3,500 lb capacity and comes with 5 lug hubs. Instead of a traditional axle it mounts to the frame of the trailer which makes it a bit easier to use in alternative applications like yours.
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  • 5x10 Cargo Trailer Suspension Upgrade to Timbren Axle Less
    When you say better suspension do you mean stiffer like to support more weight or do you mean something smoother so the trailer is less bouncy? Either way could you get me the axle diameter you have now or the capacity so that I can look into your best option? Most likely you are wanting it to be smoother which we may have a shock kit to help with.
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  • Can Timbren Axle-Less Suspension be Used on a Trailer with an Aluminum C-Channel Frame
    I spoke with my contact at Timbren and he said that the Axle-Less suspension systems such as # A35RS545 can be used on an aluminum trailer frame. He said basically anything that is strong enough (as far as frame construction) can be used. In situations where the trailer may not be all that solid or strong they do provide that square hole on each unit should you need to connect the two sides together for greater stability (not required). The C-channel frame design will be fine assuming...
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  • Replacement 3,500 lb Axles That Fit a 205/75-15 Size Tire
    To ensure that you get the correct replacement axle you really need to know what your hub face and spring seat measurements are (see attached picture). We do have 3,500 lb options to replace your axle but they are not traditional axles. From the 72" measurement you mentioned, we don't have any traditional axles that fit your application. The Timbren Axle-Less Suspension Systems eliminate the need for hub face and spring seat measurements, plus they can be easier to install if you need...
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  • Outside of Tires are Wearing too Quickly
    It sounds like you are not putting enough weight on the axle. Since the arch that axles have are meant to help accommodate the weight, you most likely are not putting enough weight on it. If that doesn't work then I recommend going with a different axle as replacing tires very often can be a bit of an expense. I am linking our selection of axles for you to look through, but I do recommend going with a Timbren axle-less suspension system, like part # A35RS545. These do tend to have a...
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  • Recommended Axle for Replacing Odd Torsion Axle on 1940's Trailer
    The angle of a Dexter torsion axle is 45 degrees at starting angle. Under weight it is normally about 10 degrees. We don't carry these axles, however, we do carry an axle-less suspension system that will be ideal for your trailer. You won't need to worry about too much rise and it will give you proper fender clearance when using compatible tires. I recommend the Timbren Axle-Less Trailer Suspension System w Hubs - Straight Spindle - 5 on 4-1/2 - # A35RS545 or the # A35RS545E if you...
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  • How Much Does Timbren Axle-Less System w/ Hub # A35RS545 Weigh?
    The weight of the Timbren Axle-Less System, # A35RS545, is right at 50 lbs for each side and make up a total of 100 lbs of your trailers GVW. This is pretty comparable, maybe slightly less, in weight compared to a traditional axle and leaf spring suspension. If you ever want to add electric brakes to this kit, I suggest picking up the following parts: Brakes - # AKEBRK-35-SA qty 1 Drums - # AKHD-545-35-EZ-K qty 2 7-Way Wiring Kit (If you need wiring for brakes) - # e99011 qty 1 Brake...
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  • Timbren Axle Less Kit for Sea Lion SK-20-2200 Over Torsion Axle
    We have the Timbren Axle Less kit part # A35RS545 which is similar to a torsion setup that comes with hubs that have a 5 on 4-1/2 inch bolt pattern as well. In general the axle-less kits have a better ride quality than torsion axles and also has better ground clearances as well so this would be what I would recommend over the torsion setup. I attached a review video for this for you to check out as well.
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  • Timbren Axle-Less System Recommendation for Building Small Camper Trailer
    The Timbre Axle-Less system part # A35RS545 that you referenced would be a good choice. This kit would fit well on your 65 inch wide trailer and has a 3,500 lb capacity like you said you wanted as well. This comes with idler hubs with 5 on 4-1/2 inch bolt pattern 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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Info for this part was:

Expert Research:
Mike L
Expert Research:
Michael H
Expert Research:
Jameson C
Expert Research:
John H
Expert Research:
Adam R
Expert Research:
Jeffrey L
Written by:
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