bing tracking image
  1. Trailer Suspension Parts
  2. Timbren
  3. Axle Replacement System
  4. Boat Trailer
  5. Camper
  6. Car Hauler
  7. Snowmobile Trailer
  8. Utility Trailer
Timbren Axle-Less Trailer Suspension System with Hubs - 5 on 4-1/2 - Off-Road Tires - 1200 lbs

Timbren Axle-Less Trailer Suspension System with Hubs - 5 on 4-1/2 - Off-Road Tires - 1200 lbs

Item # A12WS545
Our Price: $695.65
Trailer Suspension Parts
Add to cart
In Stock
zoom in icon
slider vertical icon
zoom out icon
Comment field cannot be left empty.
Name field cannot be left empty.

Thank you! Your comment has been submitted successfully. You should be able to view your question/comment here within a few days.

Error submitting comment. Please try again momentarily.

Product Images

Customer Photos

Need help with installation?
Locate installers near me
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. Great Prices for the best trailer suspension parts from Timbren. Timbren Axle-Less Trailer Suspension System with Hubs - 5 on 4-1/2 - Off-Road Tires - 1200 lbs part number A12WS545 can be ordered online at etrailer.com or call 1-800-940-8924 for expert service.
  • All Info
  • Reviews (302)
  • Q & A (0)
  • Photos

Timbren Trailer Suspension Parts - A12WS545

  • Axle Replacement System
  • Boat Trailer
  • Camper
  • Car Hauler
  • Snowmobile Trailer
  • Utility Trailer
  • Universal Fit
  • 1200 lbs
  • 5 on 4-1/2 Inch
  • Timbren

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 low-pressure, off-road 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 low-pressure, off-road tires
    • Greater distance between hub face and trailer frame is designed for off-road tires
    • Not recommended for triple-axle applications
  • Bolt pattern: 5 on 4-1/2"
  • Weight capacity: 1200 lbs
  • Quantity: 2 suspension units with hubs
  • Spindle/Hub compatibility:
    • Bearings: L44649 inner/outer
    • Races: L44610 inner/outer
    • Seal: 10-60
  • 3-Year limited warranty


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


Ground Clearance

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


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


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


Timbren Axle-Less Suspension Parts

Components

  1. The AEON progressive-rate main spring supports the weight of your trailer and cargo and easily absorbs road shock. It is constructed of heavy-duty, hollow rubber.
  2. The rebound spring minimizes trailer bounce, rattle and bottoming out. It keeps the suspension under constant tension and ensures that the main spring compresses and expands in a controlled fashion. And it delivers a smooth, stable ride - regardless of how much cargo is on the trailer.
  3. The trailing arm and integrated hanger attach the suspension to the side and bottom of the trailer frame.
  4. The control arm carries the spindle and the hub. It pivots on strong, long-lasting urethane bushings that never require lubrication.
  5. The EZ lube spindle is simple to grease. If damaged, it can be removed and replaced, saving you both time and money.
  6. The hub accepts any 5-bolt wheel that has a low-pressure, off-road 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


A12WS545 Axleless Trailer Suspension System by Timbren - Hubs with 5 Studs on 4-1/2" Bolt Circle - Wide Tires - 400 lbs

ASR400S01 Timbren Axle-Less 1200S, P021 Outboard Arm Wide Spindle

88440_2 2500 lb Idler Hubs - 545 1/2" Stud - Qty 2






Customer Reviews

Timbren Axle-Less Trailer Suspension System with Hubs - 5 on 4-1/2 - Off-Road Tires - 1200 lbs - A12WS545

Average Customer Rating:  4.6 out of 5 stars   (302 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.

by:

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!

Kelly F.

11/28/2018

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,



by:

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.



by:

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

John H.

4/14/2020

This has been a great product and works great and was easy to install



by:

First off let me say these axles are EXCELLENT mainly because of their very good design. From what i can tell Timbren is a 9/10 manufacturer. Welds are fantastic(im a professional welder) and this thing is HEAVY DUTY THICK STEEL. Only defect was some paint scratched and one of my grease fittings came right out when i was done greaseing the joint.I welded these up to my custom fabricated trailer and they are just amazing. I would urge anyone to get Timbren suspensions over leaf spring/torsion ANY DAY..



by:

This review is limited to eTrailer customer service since I have not yet installed the suspension. The part I ordered was out of stock when my order was placed. An eTrailer representative notified me both by email and by phone informing me of the situation and offering direct shipment from the manufacturer in the event time was an issue. While time was not an issue for me, I was impressed eTrailer took such a proactive approach in dealing with the stock out. Additionally, despite the item being out of stock, i did still receive it in a timely matter (~2 weeks).



by:

The product got here in great time delivered on time as said.
But I had problems with the square hole in two of the suspension brackets -- the had one side of the inside tube that had a large radius that won't fit the square tubing you are going to slide through it. I spent a lot of time trimming the bracket and rounding off the tubing I need to install. I live in a residential neighbor hood and working early in the morning. Fitting the tubing in the hole it gets wedged in and I had to pound it in to get the fit needed. Too noisy and it should fit to start with. If a person knows he is going to use this square hole in assembly then the seller needs to send the brackets that fit properly. I have to build a sub frame for this small trailer because the shelving tubing I am using for the deck is too light of gauge to put the suspension system directly too. And I had to chase the threads on one of the spindles because I couldn't turn the nut with channel locks to adjust the bearing to fit. Hope the rest of the assembly goes easier. Still got lots work to do but too hot in after noon.



by:

I only received the components today so they are not installed. This review only addresses the quality of the manufacturing, which is superb. The items were extremely well packed and though I didn't find a check list, I'm sure all hardware is there for the install.

I'd like to update this review after installation, but I don't know how soon that will be. Hopefully before it snows. If the email link still works then, I will definitely update this review. Otherwise, I'll just write a new review.



by:

This place shipped fast and product arrived sooner than I expected! The item was exactly as described and packaged very well. I would recommend etrailer.com to anyone building or repairing.



by:

Everything looks good so far just opened the boxes.



by:

Extremely fast delivery! Still building but excited to get these bad boys mounted and the trailer bouncing boulders with us!



by:

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.



by:

Work like it should.



by:

Work great no bounce



by:

Worked perfectly!



by:



by:

Very smooth pull. I'm very impressed on how the trailer pulls. My traditional axle trailer seemed to bounce a lot on the highway which made a lot of noise, but with the Timbren Axle-less that I installed on a new trailer, the trailer is so smooth and way less noise.
Great product.



by:

The axle-less suspension worked very well for my boat trailer. The suspension was easy to attach to the trailer frame and provided a lower profile than the traditional leaf spring and axle system.



by:

The service from etrailer has been great! They have been very helpful through the entire purchasing process. My one star is due to the quality of the product. First, for something as heavy duty as these are, you’d expect better packaging. On arrival, one of the spindles was sticking out of the box and the hand holds were torn on one of the other boxes. I was a little worried what I might find in the damaged box but everything seems to be intact. The disappointing part is the quality of the welds. For the price you are spending on these, I would expect a higher quality of fabrication. There is undercut in the welds that hold the three support plates together and big ol sloppy welds every where else. Unsure of what to do as my trailer has been designed around this suspension system.



by:

I purchased the 3500 lb. set w/4" drop. Wish they made a 2" drop. Install was fairly easy, but most of your time will be consumed with alignment measurements, acquiring shims, and making adjustments. I was lucky to have a very square trailer frame. However, the "slop" in the all of the mounting bolts (especially, the spindle mounts) is more than the 1/8" window they specify. You will want to preload all bolts before tightening, and then measure for alignment/toe-in. The units are supposed to have camber built-in, but it's not near enough (more shims). Also, this suspension has more travel then the documents indicated. I had to re-mount my fenders 1" higher to keep the tires front hitting. When fully loaded, you might have 1" of travel left. All that being said, the ride is better than I anticipated. It's less bouncy than a torsion axle, and very quiet. If I was building a trailer from scratch, I would use this system, again.



by:

The trailer rides great down the road and no more worries about saltwater and rusty leaf springs. Not a cheap option but I’m very happy with the setup. When installing, just be sure to measure accurately and have sharp drill bits. A drill press type of guide also helps ensure correct drilling angles. The first picture is of a mounting gusset a local welding shop made. One is needed for each side and necessary to provide needed mounting strength-at least on my trailer frame. Pics 2 and 3 show the mounted suspension on one side of the trailer. Pic 4 shows the suspension on one side of the trailer with the axle attached and a separately purchased disc brake assembly mounted on it. Finally, pic 5 shows a 2” box channel between both suspension assemblies. Independent suspensions would have been nice, but I wanted to ensure trailer rigidity was maintained. So, after one year, so far, so good. It’s all smooth sailing down the highway.



by:

It is important to know that your wheels are going to sit very tight to the trailer frame. I needed to add an extension to the hub for it to clear the sides of the camper I built.



by:

We made an amazing creation out of those two axle-less axles.
We made a large fuel cell that is used for offroad use and it has worked excellent this entire time.
They are really great products and we would love to work with them again.
Actually, we do a ton of social media stuff and youtube and if you ever have interest in sending us products to build content around, I would love to have the opportunity!
Thanks,
Michael Brandt
Garage Bound, LLC (On Youtube and Instagram and all the other socials)



by:

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



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.



by:

I used these axles in a different way than most would. I needed a trailer that was small, could handle tight switch-backs, carry 600 lbs and be light. I had this idea and as a retired design engineer I saw a great possibility in this axle. I have made four of these trailers now, one as a camp trailer, 2 for trail work for State Parks and one as a utility trailer.


25
302
Show More Reviews

See what our Experts say about this Timbren Trailer Suspension Parts

  • Timbren Axle-Less Trailer Suspension for Utility Trailer
    For you trailer, the Timbren Axle-Less Trailer Suspension System with Hubs - 5 on 4-1/2 - Off-Road Tires - 1,200 lbs # A12WS545 is a great option. If you are connecting them where there is a cross beam nothing else is needed. If there is no cross beam at that location then you would use a 2 inch square bar between the assemblies in the dedicated hole location for the needed stability so you don't twist the trailer frame. If you already have leaf springs on your trailer, then this shouldn't...
    view full answer...
  • Can Built-In Camber be Adjusted on Timbren Axle-Less Trailer Suspension System with Hubs
    When installing the Timbren Axle-Less Trailer Suspension System with Hubs # A12WS545 referenced in your question, the toe-in will need to be set. However, the system does include shims that will allow you to adjust the camber as needed. I have attached an installation video on this product for you to check out. Right around the 4 minute mark you can see this feature explained. This is a great axle-less suspension system with a weight capacity of 1,200 pounds and a bolt pattern of 5 on...
    view full answer...
  • Recommended Replacement Axle For 1993 Shorlander B167F
    We do have axles that will fit your boat trailer, but they will not be a thru axle. What we have that is compatible is the Timbren Axle-Less Trailer Suspension System with Hubs - 5 on 4-1/2 -1,200 lbs # A12WS545 or the Timbren Axle-Less Trailer Suspension System with Hubs - 4 on 4 -1,200 lbs # A12RS440. This will give you the replacement you need and will be compatible with your tires as long as you choose the assembly that matches your bolt pattern. This will replace your suspension...
    view full answer...
  • Timbren Axle Less System for 2k Axle Replacement with 5 on 4-1/2 inch Hubs and Off Road Config
    The 2k Timbren Axle Less kit you are looking for is the # A12WS545 which has the 5 on 4-1/2 inch bolt pattern hubs and is setup for the wider off-road tires like you mentioned. This does not require 13 inch or smaller trailer wheels either.
    view full answer...
  • Can Metric Studs Be Substituted In Timbren Axle-Less Trailer Suspension System With Hubs
    The Timbren Axle-Less Trailer Suspension System with Hubs, part # A12WS545, comes from the manufacturer with the 1/2 inch studs already installed in the hubs. We do not carry any metric studs for hubs. This axle-less system has a weight capacity of 1,200 lbs and has a 5 on 4-1/2 bolt pattern. this system comes with the bearings, races, and seals.
    view full answer...
  • Timbren Axle-Less Suspension System Recommendation for an Offroad Trailer Towed by a Jeep
    Yes, as long as you install the Timbren Axle-Less suspension system properly on your trailer it would work great for your setup. I think the system that would be the best for you would be the part # A12WS545 as it is designed for wider offroad tires like what I am assuming you will be putting on your trailer.
    view full answer...
  • Would an ATV Wheel Bolt Up to a Timbren Axle-Less Trailer Suspension System
    An ATV wheel with a 5 on 4-1/2 inch bolt pattern would bolt right up to the Timbren Axle-Less Trailer Suspension # A12WS545 that you referenced has the same bolt pattern. Your offset means the wheel would be further away from the trailer so it should clear just fine. On a trailer we strongly recommend the use of trailer wheels and tires since they are specifically designed for use on trailer and an ATV wheel is not rated for the vertical load that trailers will see. I would recommend...
    view full answer...
  • Boat Trailer Wheel Rim with Hub Clamps for 7 inch x 4.5 Tire
    The smallest boat trailer tire and wheels we currently offer is 8 inches. I included links showing you all the 8-inch tires and wheels. Can you provide me your tire size? I am thinking you have 7 x 14.5 wheels. Are they mobile home rims? If so we have wheel rim clamps for mobile home style hubs part # 15-2 but not wheels. Please view the FAQ's I included too.
    view full answer...
  • Is The Timbren Axle-Less Suspension System Equipped For Use On Highway
    The Timbren Axle-Less Suspension Systems are great for both off and on road use. You can certainly use them on the highway. In order to have the 5 lug wheel bolt pattern you want, I recommend the 3,500 lb Timbren Axle-Less Trailer Suspension System # A35RS545E.
    view full answer...
  • Recommended Axle for a Trailer and Cargo Weighing 800 lbs
    To determine if an axle will fit your trailer you will first need to the (A) hub-face-to-hub-face measurement and the (B) spring-center-to-spring-center measurement (see attached picture). Since this is the standard measurement for axles it will help you determine what axle you will need from our selection of axles that use the standard leaf spring suspension which has been linked for you to filter through. A great alternative option that takes a lot of the guesswork and calculating out...
    view full answer...
    Image 1 for
  • Would Taskmaster 4.80-12 Tire White Mod Wheel Fit on a Timbren Axle-Less Trailer Suspension System
    I attached the picture you referenced and actually the part # A12WS545 that you referenced has a 6-7/8 inch distance from the hub face to the frame of the trailer. The rim and tire part # TTA36RR that you referenced would easily fit as it is a 4 inch wide rim with a zero offset that has a tire on it that goes beyond the lip of the rim.
    view full answer...
    Image 1 for
  • Small Gap Between Trailer Frame and Timbren Axle-Less System After Installation
    The weight of the trailer itself will slightly compress the rubber springs on the Timbren Axle-Less suspension systems such as # A12WS545. Since the gap is so small redrilling the holes won't help. Your best option is to use appropriately sized steel plates between the trailer frame and the Timbren system to close that gap.
    view full answer...
    Image 1 for
  • Would Wheel with Backspacing 3-3/4 inches Clear Frame Installed with Timbren Axle Less Kit A12WS545
    If the backspacing measurement you took of 3-3/4 inches includes the width of the tire when installed on the rim then you'd have the clearance since the # A12WS545 has 6-7/8 inches of clearance from the wheel mount flange to the frame it's installed on.
    view full answer...
  • Timbren Axle Less Kit with Hubs Recommendation for Small Trailer Towed by Chevy Tracker
    The bad news is that the Timbren kit part # A12WS545 that you referenced is not available in any way that will allow a hub with a 5 on 5 inch bolt pattern to fit. The almost good news is that you should try to match a vehicle wheel bolt pattern since passenger vehicle wheels should be used on a trailer anyway. They aren't rated for this application and the offsets don't match typically either. Best option is to use the # A12WS545 with a trailer wheel and tire like the # AM32156 or any of...
    view full answer...
  • Does 1,200 lb Timbren Axle Less System Require Frame Cross Beam
    For the Timbren axle less system part # A12RS440 Timbren states that the 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...
    view full answer...
  • Wall Thickness Recommendation for Square Tubing Support For Timbren Axle-Less Suspension
    If I were installing the Timbren Axle-Less Suspension System, # A12WS545, on my trailer, I would use a 2 inch steel tubing with a wall thickness of 1/4 inch. I spoke with my contact at Timbren and he told me that they do not have a minimum thickness that they require as long as it was a 2 inch steel square tube. It is recommended that you add this tube if your trailer does not have a crossmember above the suspension and 1/4 inch is a common wall thickness for a 2 inch square axle.
    view full answer...
  • Is the Timbren Axle-Less Suspension System Available with 5 on 4-1/2 Inch Hubs
    Yes, you can switch the 4 bolt hub from the Timbren Axle-Less Suspension System, # A4WS440, with the 5 on 4-1/2 inch hub, # 8-259-5UC1. If you are looking to purchase this system, I recommend looking at part # A12WS545. This system comes with a 5 on 4-1/2 inch hub and would not require you to buy two different parts.
    view full answer...
  • Timbren Axle-Less Trailer Suspension and Hubs with 5 on 5 Bolt Pattern
    In order to use idler hubs that have a 5 on 5 bolt pattern you would have to use Timbren Axle-Less system # ASR3500S05. Then you could add 2 of hub # 84550UC1-EZ. But the Timbren system is rated for 3,500 pounds which will be stiffer than the 2,000 pound model # A12WS545. If you can go with a 3,500 system then this is the best option. None of the hubs with 5 on 5 bolt pattern will fit the 2,000 pound Timbren systems.
    view full answer...
  • Timbren Axle-Less Suspension System for a Tear Drop Trailer Build
    Trailer tires are constructed differently than vehicle tires and you can't use one on the other. Trailer tires are built with a thicker sidewall to handle more vertical load where as vehicle tires are not. The wheels are not as big of an issue but the problem is that vehicle wheels usually have an offset to move them either closer to or further from the body. The vast majority of trailer wheels have no offset so vehicle wheels are not a good idea on a trailer. If you go with Timbren axle-less...
    view full answer...
  • Will a Kenda 215/60-8 Bias Trailer Tire and Wheel Fit the Timbren Axle-Less System part # A12WS545
    Yes, the Kenda 215/60-8 Bias Trailer Tire with 8" White Wheel # AM3H310 is going to fit on the Timbren Axle-Less System part # A12WS545. If you check out the picture I attached you will see that when the Timbren is installed you will have a distance of 6-7/8 inches from the hub face to the trailer frame and the backspacing of the # AM3H310 is 4 inches so there would be more than enough clearance.
    view full answer...
    Image 1 for
  • Recommended Axle-Less Suspension For Off-Road Trailer
    The Timbren axle-less systems do accept standard size hubs. The axle-less systems we offer jump from a 400-lb to a 1,200-lb or larger. To make it easier you may want to consider an axle-less system that has the hubs included. The # ASR400S01 system you came from is designed for off-road tires and will work with an idler hub like part # 8-91-05UC1-EZ. The # # 8-91-05UC1-EZ comes with the bearings, races, seal, grease cap, wheel bolts and lug nuts included. The axle-less system with hubs...
    view full answer...
  • Recommendation to Replace Axle on 1987 MC Scow Sailboat Trailer
    For a replacement axle on your boat trailer, I recommend looking at a Timbren Axle-Less System like # A12WS545 that comes with hubs. This suspension unit will replace your existing axle and spindles and will fit any frame width. The easiest method for installing this system since you are replacing an existing axle, is to install a piece of 2-inch-square tubing through the integrated hole in the Axle-Less suspension. Then you will just bolt the suspension to the side of the trailer's frame...
    view full answer...
  • Can I Use Timbren Axle-Less Trailer Suspension System with Hubs on my Boat Trailer
    The Timbren Axle-Less Trailer Suspension System with Hubs - 5 on 4-1/2 - Off-Road Tires part # A12WS545 can be fully submerged in fresh water to launch your boat. They are designed with a corrosion resistant black powder coat and a lot of our customers use them on their boat trailers. I have attached a video for your reference and the dimensions of the system. I recommend Loadstar Kenda ST175/80D13 Bias Trailer Tire with 13" Aluminum Wheel part # AM31245 with a 5 on 4-1/2 bolt pattern....
    view full answer...
    Image 1 for
  • How Much Clearance Is Needed For Tires When Installing Timbren Axle-Less System Under Trailer
    I called my contact at Timbren to get some information for you about the axle-less systems. For the 1,200-lb systems the distance from the center of the spindle to the underside of the frame where the bracket mounts it is 2-5/8 inches. And for these systems they have a deflection of 2-1/8 inches. I have attached a drawing that shows these dimensions you can check out. You will want at least an inch over the deflection distance. There is no hard rule because it depends on the road conditions...
    view full answer...
    Image 1 for


< Previous
12



Do you have a question about this Trailer Suspension Part?


Info for this part was:

Employee Michael H
Expert Research:
Michael H
Employee Jameson C
Expert Research:
Jameson C
Employee John H
Expert Research:
John H
Employee Adam R
Expert Research:
Adam R
Employee Jeffrey L
Expert Research:
Jeffrey L
Employee David L
Written by:
David L
Employee Laura H
Updated by:
Laura H
Employee Wilson B
Updated by:
Wilson B
Employee Jessie B
Updated by:
Jessie B
Employee Noah M
Updated by:
Noah M
Employee Randy B
Installed by:
Randy B
Employee Zach D
Video by:
Zach D

At etrailer.com we provide the best information available about the products we sell. We take the quality of our information seriously so that you can get the right part the first time. Let us know if anything is missing or if you have any questions.