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: $936.28
Trailer Leaf Spring Suspension
This item qualifies for Free Shipping
Shipping Weight: 109 lbs
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 800-298-1624 for expert service.
  • All Info
  • Reviews (165)
  • Q & A (108)
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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.


  • 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


  • 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


  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   (165 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

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.

Working out just fine.
David J - 09/25/2020

- A35RS545

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.

- A35RS545

Great product,super quiet while trailing on the road. Great for replacing dual axles and gives better options when you have a tire flat or hub issue. All of these are independent of each other.

- A35RS545

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

- A35RS545

Great system

- A35RS545

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.

- A35RS545

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.

- A35RS545

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

- A35RS545

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

- A35RS545

Customer service was excellent and the products were well priced

- A35RS545


- A35RS545

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

- A35RS545

have not opened the boxes yet

- ASR3500S05

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

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

- ASR3500S05

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

Timbren saved our RV road trip! The leafs on the axle on our 2018 Jayco TT came apart while driving in Maryland. We tried going to the manufacturer, but they were useless. Going to a RV mechanic meant being grounded for at least 2 months. Then we found Timbren. With the help of Timbren's excellent staff we purchased axle-less system through etrailer, who made sure we got as quick as possible. It came ahead of schedule, my husband installed the Timbren system and we were back on the road! The axle-less system is better than the original manufacturers. If you plan on taking your RV or TT farther than 100 miles GET THIS INSTALLED and get it through etrailer.


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

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

- TASR5200S03

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

We use Timbren's ASR5200S03 on all of our XOC and XOC-R trailers. These suspension are well built and have always performed well for us.

- ASR3500S06

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

We use Timbren's ASR3500S06 on all of our XER trailers. We couldn't be happier. It is a well built suspension.

- ASR1200S04

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

The order came in on time and the customer service at etrailer.com (Ashley) and Sean from Tmbren was outstanding. They both were very helpful in my choosing the right product for my needs. The axle less suspension's performance is absolutely superb. It vastly improves ride quality. I am using it on a teardrop camper that often goes on gravel roads and the raddling sound from the leaf axles was horrible. A couple of points to consider before you settle on the axle less suspension: keep in mind that you will lose some hight of the trailer. While you will gain clearance from the lack of the axle, the suspension will make the trailer sit lower than before.i had to lower my hitch by an inch to maintain the trailer leveled. Also it does appear to compress at higher rate than the leaf springs, which makes it softer but easier to reach it's limit. Overall this product is absolutely a must if you are looking to improve the safety and the quality of your towing.

- ASR3500S04

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

Very nice quality, I had to call Timbren with a question very good company to deal with and etrailer is a first class company very good customer service.

- A12WS545

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

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

- TASR5200S03

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

Very exicited about these axels, I have been eyeing these for over a year. (Excellent service from etrailer, they had my parts to me in 1 day from the time of placing the order.) These axles seem to be well made and fit nicely with the Dexter hub and drum assembly and the 12" electric brake kit. I installed this all on a M1101/M1102 trailer frame after removing the factory axel assembly. I have not ran these on the road or off as of yet but will give another review at that time. The fit and finish are great and the packaging was good, a little banged up from shipping (missing 1 washer)

- A35RS545E

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

Products were delivered exactly as described. The tracking information and communication during the ordering process was also above expectations. I’d order from etrailer again.


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.

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

- A12WS545

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!

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

Show More Reviews

Ask the Experts about this Timbren Trailer Leaf Spring Suspension

  • 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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  • 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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  • 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.
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  • 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...
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  • 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,...
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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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  • 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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  • Troubleshooting Trailer Axle Bow On Bottom
    The axle bow as you referenced is designed to have the bow on the top so when weight is added the axle becomes more straight for best tire traction and level load support. Since your trailer axle has the bow towards the ground, I would first want to confirm the axle hasn't been damaged before just flipping it over. The spring seats should be an indicator of the way the axle was designed to function as they should be welded onto the bottom of the axle opposite the arch in the middle. ...
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    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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  • 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 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,...
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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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  • 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...
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  • 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...
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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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  • 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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  • Recommendation For A Smoother And Gentler Ride For 2017 Tracker TWX 195 Boat And Trailer
    I did some research and it sounds like you have a single axle boat trailer. Because of your unique situation, I consulted with some manufacturers about options. If you have a single axle trailer then I do not have any easy solution like shocks because they would be regularly submerged in water. If you have a tandem axle trailer then cushioned equalizers like Equa-Flex Cushioned Equalizers, Item # LC279687, would work even if submerged in fresh water. If you are open to making a...
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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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  • 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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  • 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 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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  • 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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  • 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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  • 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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  • 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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  • 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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  • Axle Replacement For Snowbear BlackRock Trailer
    I do have an option for you but we do not carry Snowbear BlackRock trailer axles. I recommend to use Timbren Axle-less trailer suspension Timbren Axle-Less Trailer Suspension System with idler Hubs part # A35RS545 to replace your axle on the utility trailer. The Axle-Less systems replace your axle and absorb road shock. This particular system has idler hubs and has a 3500 lb capacity. It is compatible with a 5 on 4-1/2 bolt pattern wheel. I did some research on the Snowbear BlackRock...
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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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  • 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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