1. Trailer Leaf Spring Suspension
  2. Timbren
  3. Axle Replacement System
  4. Axles
  5. Universal Fit
  6. 3500 lbs
Timbren Heavy-Duty Axle-Less Trailer Suspension - Straight Spindle - Off-Road Tires - 3,500 lbs

Timbren Heavy-Duty Axle-Less Trailer Suspension - Straight Spindle - Off-Road Tires - 3,500 lbs

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Trailer Leaf Spring Suspension
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ASR35HDS01 - Spindles Only Timbren Axles
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Designed for off-road tires, the heavy-duty Axle-Less system provides a smooth, quiet, safe ride and can eliminate the need for an axle. Suspension units with brake flanges replace your existing axle and operate independently. Fits any frame width. Lowest Prices for the best trailer leaf spring suspension from Timbren. Timbren Heavy-Duty Axle-Less Trailer Suspension - Straight Spindle - Off-Road Tires - 3,500 lbs part number ASR35HDS01 can be ordered online at etrailer.com or call 800-298-8924 for expert service.
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Timbren Trailer Leaf Spring Suspension

  • Axle Replacement System
  • Axles
  • Universal Fit
  • 3500 lbs
  • Timbren
  • Spindles Only

Designed for off-road tires, the heavy-duty Axle-Less system provides a smooth, quiet, safe ride and can eliminate the need for an axle. Suspension units with brake flanges 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
    • Oversized components are ideal for off-road and heavy-duty applications
  • 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 accept trailer hubs (sold separately)
    • EZ Lube feature makes it easy to grease bearings without removing the hub
    • Spindles can be removed from units for simple replacement if damaged
  • 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
    • Not recommended for triple-axle applications
  • Weight capacity: 3,500 lbs
  • Brake flange bolt configuration: 5 bolt
  • Quantity: 2 suspension units without hubs
    • Works with 5,200-lb, 6,000-lb, or 7,000-lb hub and drum assemblies (sold separately)
  • Spindle/hub compatibility for 5,200-lb hubs/drums:
    • Bearings: 25580 inner/LM67048 outer
    • Seal inner diameter: 2.125"
  • Spindle/hub compatibility for 6,000-lb hubs/drums:
    • Bearings: 25580 inner/15123 outer
    • Seal: 2.125 inner diameter
  • Spindle/hub compatibility for 7,000-lb hubs/drums:
    • Bearings: 25580 inner/14125A outer
    • Seal inner diameter: 2.125"
  • 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 2-inch by 3-inch steel tubing to connect the 2 Timbren suspensions together using the built-in hole on each unit.


The heavy-duty Timbren Axle-Less system combines Timbren's standard 3,500-lb Axle-Less system components with 2,000-lb AEON rubber springs, giving you a suspension system that is perfect for your small, off-road trailer. It allows you to use parts that would typically only fit a larger trailer on your undersized trailer. Add brakes for improved control. Get greater ground clearance and increased durability by installing bigger tires and wheels. This makes the heavy-duty Axle-Less suspension system ideal for off-road use.


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 by 3-inch holes make it easy to reinforce your trailer's frame by adding standard, 2-inch by 3-inch-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. The spindle also includes a 5-bolt brake flange for simple mounting of trailer brakes.
  6. The hub is not included with this model.
  7. The built-in hole accepts standard 2-inch by 3-inch tubing. If there is no crossmember above the suspension, you can easily add support to your trailer's frame by inserting 2-inch by 3-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 by 3-inch 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 1

Dimensions 2

Dimensions 3

Dimensions 4



ASR35HDS01 Heavy Duty Axleless Trailer Suspension System by Timbren - Straight Spindle - Without Hubs - Wide Tires - 3,500 lbs

Item # ASR35HDS01

Installation Details ASR35HDS01 Installation instructionsAlternate Instructions ASR35HDS01 Installation instructions




Customer Reviews

Timbren Heavy-Duty Axle-Less Trailer Suspension - Straight Spindle - Off-Road Tires - 3,500 lbs - ASR35HDS01

Average Customer Rating:  4.6 out of 5 stars   (131 Customer Reviews)

Designed for off-road tires, the heavy-duty Axle-Less system provides a smooth, quiet, safe ride and can eliminate the need for an axle. Suspension units with brake flanges replace your existing axle and operate independently. Fits any frame width.

- ASR35HDS01
by:

Quick, online support, fast shipping, looks like I received exactly what I ordered. 747180



- A20RS545
by:

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


This is my first time in building something like this 774926



- A12WS545
by:

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


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

- 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



- 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



- A12WS545
by:

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


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



- ASR5200S01
by:

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


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


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

45920

- A20RS545
by:

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


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



- 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


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



- A35RS545
by:

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


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



- A35RS545
by:

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


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



- 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



- A20RS545
by:

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


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



- 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

- 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

- ASR2KHDS02
by:

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


Great looking parts, robust design, professional looking welds....Nothing missing... I contacted Timbren prior to my purchase and received a prompt, helpful reply... The supplied instructions are complete and straight forward, i'm confident should i have any issues, contacting them will get them resolved... 286117



- A20RS545
by:

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


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



- TASR35HDS06
by:

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


We buy a number of things from E trailer and have always found there support and online cataloging very helpfull. 318927



- A20RS545
by:

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


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



- A20RS440
by:

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


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



- ASR2KHDS04
by:

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


I think their axle-less design is very clever. The build quality of the suspension part looks good. I have heartburn over the spindle build quality. The spindle is mounted to the suspension and then the trailer wheel mounts on the spindle. The spindles I received are warped from welding. The plate that bolts onto the suspension does not mount flat due to this warping. I called Timbren. The gentleman that helped me was very pleasant. I described the problems and he said he would check his inventory and call me back. He did call me back and said they are all like that. He said get out the grinder and fix what you can and just tighten the bolts super tight, maybe the gap will go away. Really? Wow. The other problems are a LOT of weld spatter where the bolts are supposed to fit and they made a bend in the plate too close to the bolt holes so two bolt heads hit the bend and dont fit flat against the part they are supposed to hold together. Yikes! I am taking the spindles to a machine shop to fix them but I would not have ordered this Timbren stuff had I been warned before hand. So, fair warning. 100490


Comments
Your comments regarding the Axle-Less Suspension are greatly appreciated. To address the issues you have pointed out, we have carefully reviewed our assembly. While we did not come across any major issues, we did however discover a few areas where the quality could be improved, specifically in the areas you brought to our attention. The following improvements have been made to improve the manufacturing process: - Robotic welder gun re-programmed so that it stops from getting too close to the areas adjacent to the mounting holes of the outboard arm and control arm. This will minimize weld spatter. - The distortion of the flat plates is due to the high degree of heat generated during welding. We conducted experiments, changing the sequence of welding operations until we were successful in minimizing the distortion. We apologize if our customer service in addressing your concerns was insufficient at the time of your phone call. Timbren is an ISO 9001:2008 company with an excellent reputation for providing customers with quality products that are well-performing and easy to install.
-- comment by: Quality A - 09/26/2013

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Ask the Experts about this Timbren Trailer Leaf Spring Suspension

  • Can Timbren Axle Less Kit Install on Trailer with C-Channel Frame
    Timbren axle less kits can install on trailers like yours with C-channel frames. We've had this question sent into us before and when we spoke with Timbren they told us that the C-channel frame design will be fine assuming that the open part of the C is on the inboard side and not the outboard side of the frame. Inboard means towards the middle of the trailer and outboard means towards the outside. If the C opening is on the outboard side you would need to box out the frame by having a...
    view full answer...
  • Is Timbren 3500-lb Axle-Less Trailer Suspension # ASR35HDS01 Suitable for Off-Road Tires
    My contact at Timbren confirmed this kit includes wide spindles designed specifically for use with wider off-road tires so this should be a fine choice for your application. The Timbren 3500-lb Axle-Less Trailer Suspension # ASR35HDS01 is indeed fairly new to our site, having been added in October 2013. This kit offers bolt-on (no welding) installation and fits any width trailer frame. It can even be installed on aluminum trailer frames. This product has wide, straight EZ-Lube spindles...
    view full answer...
  • Recommended Hub/Drum for Timbren 3,500 Lb Axle-Less Trailer Suspension System
    The Timbren Heavy-Duty Axle-Less Trailer Suspension is offered with a straight spindle using part # ASR35HDS01 and a 2" lift spindle using part # TASR35HDS06. They both use the same brake mounting flanges but the bearings are different. The straight spindles use a 25580 inner/LM67048 outer bearing and the lift spindles use a 25580 inner/15123 outer bearing. For a braking assembly on either spindle I recommend the Electric Trailer Brake Kit part # AKEBRK-7-SA which are self adjusting...
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  • Timbren Kit Recommendation for Trailer for 6 on 5.5 inch Bolt Pattern and Brake Assemblies
    You would need to go with the 5,200 lb Timbren part # ASR5200S01 so that you could use a 6 on 5-1/2 inch bolt pattern like the # 8-201-5UC3. Then for brake assemblies you'd want the part # AKEBRK-7-SA.
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  • Can Timbren Heavy-Duty Axle-Less Trailer Suspension Work With Regular Tires
    Even though the Timbren Heavy-Duty Axle-Less Trailer Suspension, part # ASR35HDS01 says it is for off-road tires(they are usually wider), it will still perform extremely well with regular tires as well. This system is designed with EZ-Lube spindles and has a weight capacity of 3,500-lbs. It does not come with hubs so if you need an idler hub that will work I recommend part # AKIHUB-655-35-EZ-K. If you are interested in a hub and drum that you can use with brakes I recommend part...
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  • Timbren Axle-Less Suspension System for Off-Road Tear Camper
    There is a lot to unpack here so I'll try address your concerns as best I can. First, you should not use a spacer of any kind to ensure your wheels fit; this would cause potential installation issues with the overall assembly not to mention void the warranties on each of the products you are looking at. The problem is if you need 8 inches to the hub face like what you get with the Timbren Heavy-Duty Axle-Less Trailer Suspension # ASR35HDS01. If this is a requirement for your wheels...
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  • Timbren 3,500 Pound Axle-Less Trailer Suspension System to Work with Hydraulic Handbrake
    We offer three heavy-duty off-road Timbren systems for 3,500 pound axles: Straight spindles # ASR35HDS01 2 inch lift # TASR35HDS06 4 inch lift # ASR35HDS02 I've linked our selection of hub and drum assemblies that will fit the Timbren systems so you can choose the correct bolt pattern.
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  • How to Use a 3,500Lb Timbren Axle-Less Trailer Suspension System with 6 on 5-1/2 Inch Bolt Pattern
    Yes, there is a 3,500lb Timbren Axle-Less Trailer Suspension that will allow you to use trailer hubs with a 6 on 5-1/2" bolt pattern but you will need to use the Heavy-Duty version part # ASR35HDS01. This system has larger spindles which will be compatible with trailer hubs that have the bolt pattern you requested. If you just need idler hubs and do not have brakes then you can use the Dexter Trailer Idler Hub Assembly part # 8-213-5UC1-EZ which uses a 25580 inner and LM67048 outer bearing....
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  • Recommended Timbren Axle-Less Trailer Suspension for Off Road Tires
    Unfortunately we don't carry hubs compatible with the Ford 6 bolt hubs as they are not trailer hubs. For the Timbren Heavy-Duty Axle-Less Trailer Suspension- Off-Road Tires # ASR35HDS01 you can use brake assemblies # AKEBRK-6L which will work with 12x2 inch hubs. If you determine you desire to use trailer hubs, I recommend the Dexter Trailer Hub and Drum Assembly - 5,200-lb and 6,000-lb E-Z Lube Axles - 12" - 6 on 5-1/2 # 8-201-9UC3-EZ which are a confirmed fit. They will not work...
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  • Suspension System Recommendation for an Off-Road Tear Trailer that is Breaking Leaf Springs
    I have a solution for you, but the leaf springs we sell aren't rated for off-road use. That's why you are snapping springs. Off-road conditions are just too rough for trailer springs designed for on-road use. Instead you would want the Timbren Heavy-Duty Axle-Less Trailer Suspension - 4" Lift Spindle - for Off-Road Tires # ASR35HDS02 to add a 4 inch lift, or part # ASR35HDS01 for a straight axle. Both of these are designed for what you are doing and are made to accommodate wider tires...
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  • Comparing Timbren Axle-Less Suspension Kits for Regular Tires vs. Off-Road Tires
    The 3500-lb Timbren axle-less suspension kits # ASR3500S06 (regular tires) and # ASR35HDS01 (off-road tires) differ in that the kit for wider off-road tires provides a 2-inch greater distance from the mounting point on the trailer frame to the hub face. This 8-inch distance versus the 6-inches for the regular tire kit means wider off-road tires will have the necessary clearance to avoid contacting the trailer frame. The linked image for off-road kit # ASR35HDS01 shows the wider 8-inch...
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  • Recommended Axle-Less Suspension System For Lightweight Off-Road Trailer
    Since you want to travel off-road I recommend the Timbren Axle-Less System, part # ASR1200S01. This is designed for off-road tires and has a capacity of 1,200-lbs. The hub assembly I recommend is part # 8-91-05UC1-EZ. This system does not have the same bolt pattern as your Tacoma. This hub has a 4 on 4 wheel bolt pattern. Since you said you want to match the 6 x 5-1/2 bolt pattern of your Tacoma you will need to use a more heavy-duty system like part # ASR35HDS01. This is a 3,500-lb...
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  • How to Select the Correct Replacement Axle for an RV
    If you have standard axles and the rest of the suspension components on your RV are in good shape then the most cost-effective option is to simply replace your standard axle. To choose the correct replacement axle you simply need to make sure that the hub face (A) and spring center (B) measurements match up with your current axle, and that it has the appropriate weight rating. From there you can filter through our linked selection of axles to see if we carry one that fits your needs....
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  • Recommended Axle on Home Made Trailer
    The Dexter Trailer Axle # 35545E-ST-EZ-89 measures 89 inches from hub face to hub face and 74 inches from spring center to spring center. You'll need to make sure this will work on your trailer but it sounds to me like it's too long. Another option is to use an axle-less system. The Timbren # A35RS545E includes electric brakes and hubs with a 5 on 4-1/2 bolt pattern. Since you're using such large tires a better Timbren system is # ASR35HDS01. You'll need to add a hub and drum assembly...
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  • Differences Between Timbren Heavy-Duty Axle-Less Trailer Suspension # ASR35HDS01 and # A35RS545E
    The Timbren Heavy-Duty Axle-Less Trailer Suspension # ASR35HDS01 doesn't have hub/drums like the # A35RS545E does and the spindle is spaced out further from the frame to allow for wider tires with the part # ASR35HDS01 but aside from that they are the same capacity and ride height.
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  • Recommended Timbren Axle-Less Suspension for 3,100 lb Off-Road Trailer
    If your trailer has a GVWR (gross vehicle weight rating) of 3,100 lbs then you definitely want to go with 3,500 lb axles like the Timbren Axle-Less Trailer Suspension System # A35RS545E you referenced. This doesn't really have to do as much with accounting for bumps as it does with just the general weight of your trailer. As long as your suspension components are rated for at least the GVWR of your trailer then you are good to go. The manufacturers keep things in mind like bumps when...
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Info for this part was:

Written by:
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Expert Research:
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Expert Research:
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Expert Research:
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Video Edited:
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Video Edited:
Kathleen M
Updated by:
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