bing tracking image
  1. Trailer Axles
  2. Timbren
  3. 3500 lbs
  4. Universal Fit
  5. 5 on 4-1/2 Inch
  6. Drop - 4 Inch
Timbren Axle-Less Trailer Suspension w Idler Hubs - Standard Duty - 4" Drop - 5 on 4-1/2 - 3.5K
Timbren

Timbren Axle-Less Trailer Suspension w Idler Hubs - Standard Duty - 4" Drop - 5 on 4-1/2 - 3.5K

Part Number: A35RD545
In Stock
$1,101.92
Trailer Axles
Add to cart
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

Get more ground clearance and a smoother ride. Built-in shock absorption limits rattle and bottoming out. E-Z Lube, drop spindle lowers deck height for easy loading. Fits any trailer frame width. Includes inner (L68149) and outer (L44649) bearings. Great Prices for the best trailer axles from Timbren. Timbren Axle-Less Trailer Suspension w Idler Hubs - Standard Duty - 4" Drop - 5 on 4-1/2 - 3.5K part number A35RD545 can be ordered online at etrailer.com or call 1-800-940-8924 for expert service.
  • All Info
  • Reviews (315)
  • Q & A (0)
  • Photos

Timbren Trailer Axles - A35RD545

  • 3500 lbs
  • Universal Fit
  • 5 on 4-1/2 Inch
  • Drop - 4 Inch
  • Idler Hubs
  • Rubber Spring Suspension
  • Timbren
  • EZ Lube Spindles

Get more ground clearance and a smoother ride. Built-in shock absorption limits rattle and bottoming out. E-Z Lube, drop spindle lowers deck height for easy loading. Fits any trailer frame width. Includes inner (L68149) and outer (L44649) bearings.


Features:

  • Delivers a smooth, stable, quiet ride - regardless of load size
    • Jounce springs absorb road shock and support trailer's load
    • Rebound springs minimize body roll, rattle, and bottoming out
    • Built-in camber and toe-in reduce wear on your trailer's tires
    • Units work independently - what affects one side of your trailer won't affect the other
  • Eliminates axle beam to increase ground clearance and fit any trailer frame width
    • System replaces 1 trailer axle and suspension components
    • 2 Separate units bolt directly to your trailer's frame
  • Designed for your on-road adventures
    • Strong steel construction is built to last
    • Black powder coat resists rust and corrosion
  • Lowers trailer deck height for easier loading and unloading
    • 4" Drop spindle is built in
  • Includes idler hubs with bearings, races, and seals
  • Allows for simple bearing maintenance with built-in grease zerks


Specs:

  • Application: single- and tandem-axle trailers that use regular tires
    • Tandem-axle trailers require 2 complete systems
    • Not recommended for triple-axle trailers
  • Quantity: 2 suspension units (with hubs)
  • Weight capacity: 3,500 lbs
  • Bolt pattern: 5 on 4-1/2"
  • Bolt hole diameter: 1/2"
  • Suspension travel: 1-3/4"
  • 3-Year limited warranty


Tire, Wheel, and Hub Compatibility

  • Tire size: 235/85R16 or smaller
  • Wheel diameter: 16" or smaller
  • Bearings (included)
    • Inner: L68149
    • Outer: L44649
  • Races (included)
    • Inner: L68111
    • Outer: L44610
  • Seal: 10-19 (included)
    • Inner diameter: 1.719"
    • Outer diameter: 2.565"

Note: This Axle-Less system requires crossbeam support. If your trailer frame doesn't have a crossmember in place, you can retrofit it with one, or you can add a support by running a piece of 2" x 2" steel tubing through the square holes cut into these units. You could also add a steel reinforcement bracket to the inside of the trailer frame.


Get more ground clearance and a more comfortable ride when you're towing with Timbren's Axle-Less trailer suspension. This suspension system provides great shock absorption to comfortably get you where you need to go and to protect your precious cargo as you travel - even on rough pavement. With 2 independently operating units, you'll get better handling when making tight turns. And because this system eliminates your axle and has drop spindles built in, you'll get a lower deck height without sacrificing clearance.


Timbren Axle-Less Suspension vs. Other Suspension Systems

There are many suspension options for your trailer or camper. So, what makes Timbren Axle-Less different?


Leaf Spring Example

Axle-Less systems are a definitive upgrade over traditional leaf springs, in part because they allow you to do away with your thru-axle, allowing for maximum clearance. As you've probably noticed, having a leaf spring suspension means that your axle will always hang at least a few inches below your trailer's frame, resulting in limited ground clearance and a high deck height. This may make it difficult to navigate rough roads and to load items into your trailer.


In addition, while leaf springs do a great job of supporting an even load, they may cause your trailer to bounce and rattle when it's empty or to bottom out with a heavy load. And they don't offer any type of shock absorption for a smooth ride - unless you have upgrades built in. With Timbren's Axle-Less system, gone are the days of dealing with these annoyances - this suspension is designed for a quiet, balanced ride, whether your trailer's fully loaded or empty.


Torsion Axle Example

A torsion axle is a step up in terms of shock absorption, and it provides more clearance than a traditional, leaf spring suspension, but that crossbeam will still hang down some. And if your torsion axle gets damaged in any way, it can't be repaired - you'll have to replace the entire thing with a setup that matches your exact trailer frame width.


With the Axle-Less system from Timbren, you won't have a low-hanging axle beam to get in the way when you're driving on rough roads. The drop spindles on this setup will also lower your deck height, making loading and unloading your trailer way easier. And the rubber springs and independent operation both combine to absorb shock and deliver a smooth, easy ride. In addition, the Axle-Less system can be easily maintained over time, and it will fit any trailer frame width, so you don't have to worry about potentially ordering the wrong size like you might with other systems.


Timbren Silent Ride Example

Another suspension upgrade on the market is Timbren's Silent Ride. This setup is a great option to reduce bounce and rattle because it has the same AEON rubber springs as the Axle-Less system. But the Silent Ride still requires an axle, so you won't get the same ground clearance or low deck height as you will with the Axle-Less suspension.


Timbren Axle-Less Suspension Parts

The Timbren Axle-Less suspension is designed with you in mind. All of the parts work together so you can tow your trailer comfortably - regardless of load size.


Timbren Axle-Less Suspension Parts Diagram

  1. The jounce spring supports the weight of your trailer and cargo. It easily absorbs road shock and is constructed of AEON heavy-duty, hollow rubber.
  2. The rebound spring delivers a smooth, stable ride - regardless of how much cargo is on the trailer. It controls the movement of the jounce spring to minimize trailer body roll, bounce, rattle, and bottoming out.
  3. The trailing arm with integrated hanger attaches 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 polyurethane bushings that never require lubrication.
  5. The E-Z Lube, 4" drop spindle is simple to grease. If damaged, it can be removed and replaced, saving you both time and money compared to a traditional axle.
  6. The built-in hole accepts 2" x 2" steel tubing (not included) to add support to your trailer's frame. The tubing sits higher than a trailer axle, providing additional ground clearance.

Installing the Timbren Axle-Less Suspension

Measuring Diagram

The first step in installing the Timbren Axle-Less suspension is to make sure that the mounting points for each unit are directly across from each other. The easiest way to measure this is to mark the desired mounting points on your trailer's frame. Then measure the distance between these points and the center of your trailer coupler. These measurements (A and B) need to be within 1/8" to keep your trailer frame square.


Once you have your mounting points lined up, you'll be ready to install the system. Drill 3 holes into your trailer frame at the desired mounting points. Then bolt each unit to the frame with Grade 8, 1/2" bolts (not included).


Keep Your Trailer Frame Square

Because Timbren's Axle-Less system eliminates your trailer's thru-axle, you'll have to find another way to get the crossbeam support that keeps your trailer frame square. You have a few different options to do this depending on your application and how much fabricating you're comfortable doing.


Crossmember Installation

If you're building a trailer, the best option is to begin building with the Timbren Axle-Less in mind and include a crossmember where you want to install the units on your frame. You can also retrofit an existing trailer with a crossmember.


Steel Tubing Installation

If you don't have a crossmember where you want to install the Axle-Less system (and you don't want to add one), pick up a section of 2" x 2" steel tubing from a nearby weld shop. This tubing will serve as a support to keep your trailer square. It will hang only about an inch down from your trailer frame, providing more clearance than a thru-axle.


After you've mounted both of the units to your frame, you'll need to drill 3 holes into the steel tubing and into the built-in, square holes. Then, insert the tubing through the holes and secure it with 3 bolts (not included) on each side.


Reinforcement Bracket Installation

The last option is to fabricate a reinforcement bracket that can be attached to the inside of your trailer frame and to the Axle-Less suspension. It may be a little harder to fabricate a compatible bracket than to mount steel tubing, but you may get additional clearance with this method.


Dimensions of the Timbren Axle-Less Suspension

The following diagrams show measurements taken on the Timbren Axle-Less suspension system without hubs.

Axle-Less dimensions front view

A B C D E F
13" 13-11/16" 1" 5" 1/4" 4-1/4"


Axle-Less dimensions top view

G H I J K L
5-5/8" 6" 4-3/4" 1-3/4" 3-3/8" 3-11/16"




ASR3500S04 Axleless Trailer Suspension System by Timbren - 4" Drop Spindle - 5 on 4-1/2" Hubs - 3,500 lbs

88545_2 Trailer Idler Hub Assemblies for 3,500-lb Axles - 1/2" Studs - Quantity 2





Customer Satisfaction Score:


Customer Reviews

Timbren Axle-Less Trailer Suspension w Idler Hubs - Standard Duty - 4" Drop - 5 on 4-1/2 - 3.5K - A35RD545

Average Customer Rating:  4.6 out of 5 stars   (315 Customer Reviews)

Get more ground clearance and a smoother ride. Built-in shock absorption limits rattle and bottoming out. E-Z Lube, drop spindle lowers deck height for easy loading. Fits any trailer frame width. Includes inner (L68149) and outer (L44649) bearings.

by:

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



by:

Great product, easy install, nice ride.



by:

Shockingly high quality product. Every trailer I build from now on will feature this!



by:

Good heavy duty product

Jason M. profile picture

Jason M.

8/13/2016

Axles work great



by:



by:



by:



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:

Installed the Timbren Axle-less suspension a little over a year ago and approximately 5000 miles ago. I have been extremely satisfied with the installation and performance thus far and have had no issues. I also chose to install an optional crossmember for more strength using a 1/4" thick piece of 2x3 steel. I had to increase the weight capacity of my campers suspension due to renovating the interior completely and adding more weight. I also strengthened the frame to accommodate the extra weight. In addition to installing the Timbren 5200LB system I installed new 12" electric brakes and upgraded to 225/75R15 tires with E load range rating.



by:

I am satisfied with the overall craftmanship of the product. But I was disappointed with the welding on the spindles. none of the weld splatter was buffed off, and the welds looked gobbed on, unlike all the other welds which look good.



by:

Spindles broke. Would not warranty them



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:

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:

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:

Installed the Timbren Axle-less suspension a little over a year ago and approximately 5000 miles ago. I have been extremely satisfied with the installation and performance thus far and have had no issues. I also chose to install an optional crossmember for more strength using a 1/4" thick piece of 2x3 steel. I had to increase the weight capacity of my campers suspension due to renovating the interior completely and adding more weight. I also strengthened the frame to accommodate the extra weight. In addition to installing the Timbren 5200LB system I installed new 12" electric brakes and upgraded to 225/75R15 tires with E load range rating.



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!



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:

Huge improvement over the factory leaf springs. The suspension is so nice and quiet, I forget I’m towing. Very rust proof as well with many dips in saltwater with no signs of oxidation. Not the easiest to install but it’s nice to have the option to either weld or bolt on and replaceable spindles insure the suspension will likely outlast the rest of the trailer.



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.



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:

They have more pros than cons, but the second set I bought broke the flat plate that holds the spindle at about 8 months. The steel quality seemed less than I would expect since it basically peeled it back like a pop can as you can see in the pictures. Otherwise I like the clearance and ride. They last 2-3 years where the torsion axles I replaced would wear out in 4 months after driving down rough gravel roads. There is a grade zerk on the underside which I didn't realize until I bought the second set. That would have helped the first set last longer had I known about it.


25
313
Show More Reviews

See what our Experts say about this Timbren Trailer Axles

  • Replacement Timbren Axle-Less Trailer Suspension For a 3500LB Jet Boat Trailer
    First you will need to measure to determine if you need a Timbren System with a Straight Spindle # A35RS545 or a 4" Drop Spindle # A35RD545. The straight spindle will place the axle centerline 3-13/16" below the bottom of the frame while the 4" drop will sit 1/4" below the bottom of the frame. You can switch to tandem axle by installing 2 of the Timbren # A20RS545 axle-less systems on each side. Do note this will not increase your trailer capacity. You will also need additional wheels...
    view full answer...
  • Available Timbren Axle-Less Suspension System Rated For 3,500 Pounds
    We have two Timbren, 3,500 pound systems with idler hubs, the Timbren Axle-Less Trailer Suspension System with Hubs - Strait Spindle - 5 on 4-1/2 # A35RS545 and the Timbren Axle-Less Trailer Suspension with Hubs - 4 Inch Drop Spindle - 5 on 4-1/2 # A35RD545. Both of these systems are designed to mount wheels that have a 5 on 4-1/2 bolt pattern. Both the # A35RS545and the # A35RD545 have 3,500 pound weight capacities and feature EZ-Lube Spindles. When choosing tires and wheels for your...
    view full answer...
  • Recommended 3500lb Timbren Axle-Less W/ 4 Drop For 3000-3300lb Horse Trailer
    Thanks for all of the information! The products you were looking at are all compatible. Starting with the Timbren Axle-Less Suspension I would go ahead and use the # A35RD545 as it has the 3500lb rating which will be perfect for your intended trailer weight, and already includes the 5 on 4-1/2" bolt pattern hubs that you were wanting. The # ASR3500S04 is the exact same spindle just without hubs, and would work perfectly with the # CE13515 you mentioned, but there is not really much of...
    view full answer...
  • Complete Axle-Less Suspension And Electric Brake Setup For 1990 Aliner Camper
    I do have a solution for your axle. It looks like you have a torsion axle on your 1990 Aliner Camper, which we do not carry. I recommend going with an axle-less suspension setup. This will replace your current axle and suspension. If you are wanting a 3,500lb rated axle then you can go with Timbren Axle-Less Trailer Suspension System Straight Spindle # A35RS545 or go with Timbren Axle-Less Trailer Suspension System 4" Drop Spindle # A35RD545 which has 4" drop for lower ground clearance....
    view full answer...
  • Available 3,500 lb Timbren Axle-Less System Without Electric Brakes
    There is a Timbren Axle-Less Trailer Suspension System similar to # A35RD545E but does not have electric brakes. The # A35RD545 has the same 3,500 lb capacity with a 4" drop spindle and idler hubs. The hubs have a 5 on 4-1/2" bolt pattern with inner bearing # L68149, outer bearing # L44649 and grease seal # RG06-050. I've added a link to a video review of the Timbren Suspension System for you to take a look at as well.
    view full answer...
  • Replacement for 80-5/8" Long 3,500 Pound Axle With 4" Drop and 5 on 4-1/2 Bolt Pattern
    It sounds like you're looking for a 3,500 lb axle measuring 80-5/8" long with a 4" drop. I do have a solution, but we do not have an axle that matches this length. What I can offer is the Timbren Axle-Less Trailer Suspension System. This system fits any trailer width and will upgrade and replace your suspension in addition to the axle. If you don't need brakes then you can use the # A35RD545. If you would like an option with brakes then you need the # A35RD545E instead. Both of these...
    view full answer...
  • 3,500 lb Timbren Axle-Less Suspension System With Drop For Small Camper
    It sounds like what you are needing is a Timbren Axle-Less Suspension System that has a drop spindle on it in order to have a low clearance to fit in your garage. We do have options for you, both of which have a 4 inch drop, 3,500 lb capacity and come with either an idler hub or a hub and drum. - Timbren Axle-Less Trailer Suspension System with Hubs - 4" Drop Spindle # A35RD545 - Timbren Axle-Less Trailer Suspension System with Electric Brake Hubs - 4" Drop Spindle # A35RD545E I have...
    view full answer...
  • Availability of Trailer Axles with Drop
    The dropped axle option is the single most popular option for tiny house trailers made by tinyhouse basics, according to their website. This feature allows a 4-inch lower deck height for more interior headroom and easier entry. We do offer the axle-less Timbren trailer suspension kits that offer drop. Examples include the 3500-lb-rated Timbren kit # A35RD545E which features electric brakes with 5-on-4-1/2 hub/drums and the idler hub kit # A35RD545. These suspension kits bolt (or weld)...
    view full answer...
  • Trailer Height When Using Timbren Axle-less System with 4 Inch Drop
    The exact height of the deck will depend on other factors with your trailer. However, I can tell you that the spindles of the Timbren Axle-less System # A35RD545 sit pretty much at even height as the location where they connect to a trailer's frame. Knowing that, if you know the tire size you'll be using and divide it in half you'll know the height the spindles will be off the ground. We can factor in that the weight of the trailer on the Timbrens will cause them to ride slightly lower...
    view full answer...
  • Will 3,500 lb Timbren Axle-Less Trailer Suspension System Work With Disc Brakes
    The Timbren Axle-Less Trailer Suspension System such as the part # A35RD545 you referenced can be mounted to any trailer frame so long as there is an existing crossmember where you want to instal it, or you can install a piece of 2-inch square tubing to the frame and bolt it to that. So the short answer is yes, the Timbren system will work for you. That said, the Timbren System # A35RD545 you referenced already has hubs so if you already have hubs you will need the Timbren Axle-Less Trailer...
    view full answer...
  • Smallest Diameter Trailer Tire with At Least 1,800 Pounds Capacity and Parts for Building a Trailer
    Assuming the trailer is as single axle and only has two tires the smallest we carry is a 205/75-14 size tire. The Kenda # AM10235 measures 26.3 inches in diameter and has a weight capacity of 2,200 pounds at 75 psi. You also want to make sure the wheel has enough capacity. If you can tell me your bolt pattern I can recommend a wheel as well.
    view full answer...
  • Axleless Trailer Suspension for Small Off-Road Camper
    We have a Timbren Axle-Less Trailer Suspension System w Hubs # A35RD545 that will work great for your off road camping trailer. This system is rated for 3,500 lbs and will bolt right to your frame. For a tire and wheel set up you could go with Kenda Karrier S-Trail ST145R12 Radial Trailer Tire with 12" Aluminum Wheel - 5 on 4-1/2 - Load Range D # AM31202. I think these wheels and tires would look sweet on a small camper. We also have a silver mod rim and tire # LHAW121 if you would rather...
    view full answer...
  • Recommended Timbren Axle-Less Suspension to Replace Lippert 3500 lb Capacity Axle
    The numbers you provided confirm that you have a Lippert 3500 lb axle. Lippert couldn't tell me if if was a straight, a drop (which raised the trailer) or a lift (which drops the trailer) axle. Here are the available options. • For a straight spindle, use # ASR3500S05, or # A35RS545E which includes brake assemblies and hub/drums or for the same assembly but with idler hubs, use # A35RS545 • For a 2 inch lift spindle, use # TASR35HDS07 • For a 4 inch lift spindle, use # ASR3500S06 •...
    view full answer...
  • Can Timbren Axle-Less Suspension Be Installed On EZ Loader TA102B 20-23 Boat Trailer Torsion Axles?
    The Timbren Axle-Less Trailer Suspension w Idler Hubs # A35RS545 appears to be the correct system for your EZ Loader boat trailer. This has the straight spindle which places the axle center line 3-13/16" below the axle frame. The System # A35RD545 you found has a 4" drop which places the axle center line 1/4" below the trailer frame when not under load. You can check and see which one best matches your trailer.
    view full answer...
  • Replacement 3,500 lb Axle Recommendation with 4" Drop and 5 on 4-1/2" Bolt Pattern
    For your application we have the Timbren Axle-Less Trailer Suspension System w Hubs - 4" Drop Spindle - 5 on 4-1/2 # A35RD545. This has the weight rating, 4" drop, and hub bolt pattern you're looking for and since it installs directly to the trailer frame there aren't any specific hub face or leaf spring measurements it matches with. If you're wanting to stick with the same axle type you currently have then you'll need to reach out to a local trailer shop and have them order a custom one...
    view full answer...
  • Can Timbren Axle Less Kit Attach to 2 inch Square Trailer Frame
    Yes, the Timbren Axle Less kit part # A35RD545 can attach to a trailer frame that is made of 2 inch by 2 inch frame channel.
    view full answer...
  • Will a Kenda 205/65-10 Bias Trailer Tire with 10" White Wheel Fit on Timbren Axle-Less System
    Yes, the wheel and tire part # AM3H480 is going to have plenty of clearance to install on the Timbren Axle-Less Trailer Suspension System w Hubs # A35RD545. This axle system would give you 6 inches of clearance from the hub face to the frame of the trailer so the rim would have plenty of clearance to fit.
    view full answer...
    Image 1 for
  • Best Option For Low 3,500 lb Axle Suspension
    Thanks for the drawing, and I think we may have an option for you here, though there isn't a traditional through-axle that can work for you with those dimensions. The reason for that is for a standard 3,500 lb through-axle, the shortest you will find is 89 inches from hub face to hub face, which is quite a bit further than the 70 inch width you have so the wheels would stick way out. So instead I the Timbren Axle-Less Suspension System, which are simply bolted or welded so you do not have...
    view full answer...
    Image 1 for
  • Recommended Trailer Axles, Hubs, Wheels and Tires For a Custom Built Seaplane Trailer
    Due to the amount of weight you will be carrying of the seaplane I am going to base all my recommendations off a trailer that will be close to 1,000lbs. This would put the total weight of the seaplane(6,000lbs) and trailer at 7,000lbs maximum. I recommend 2 of the Timbren Axle-Less Trailer Suspension System w Hubs # A35RD545. This has a 4" drop spindle allowing you to keep the trailer as low as possible for easier launch and retrieval. It already comes with a 5 on 4-1/2" idler hub as...
    view full answer...
  • Can Air Be Released From Timbren Axle-Less System to Lower Ground Clearance
    The Timbren Axle-Less Trailer Suspension Systems, like the 3,500 Pound # A35RD545 that you were looking at, feature independent AEON springs for load support. These are not air springs but durable hollow rubber springs, so they aren't something that you can adjust the air pressure for or empty out when needed to decrease your ground clearance. This particular system does have a 4" drop spindle though, which will lower the overall deck height of the trailer for easier unloading/access....
    view full answer...
  • Which Timbren Axle-Less Suspension for 3500lb Capacity Low-Deck Car Hauler
    The Timbren Axle-Less suspension system is a good choice. They offer a 4 inch drop spindle model, part # A35RD545 includes idler hubs and # A35RD545E includes electric brake hub drums. These are good for a total 3500 lb capacity, which includes the weight of the vehicle and the trailer. This would be a good option for a car carrying trailer with a low deck height. At rest, the center of the spindle would sit even with the bottom of the trailer frame, and at maximum deflection, the center...
    view full answer...
  • Timbren Axle-Less Suspension System to Lower Trailer Deck Height
    There is a safe and effective way to lower your trailer height, Timbren 3500-lb Axle-Less Suspension Kits like # ASR3500S04. This bolt-on kit completely replaces your beam axle, leaf springs and hangers and it is designed with 4-inches of drop in the spindle height. You get lower deck height without compromising ground clearance and also a fully-independent suspension! Please check the linked video for more details on these Timbren suspension units. The easiest install method uses 2 x...
    view full answer...
    Image 1 for Image 2 for
  • Will the Timbren Axle-Less Suspension System Work on an Aluminum I-Beam Boat Trailer
    You may be able to use the Timbren Axle-Less Suspension System, # A35RD545, on your aluminum boat trailer as long as you can find a way to bolt it to the frame. The frame brackets for the Timbren Axle-Less systems bolt to the outboard side and bottom of the frame rail. You will need to weld an aluminum plate to the outboard side of the frame for the side bolt holes and you will want to make sure the bolts for the bottom of the frame will not hit the center web of the frame. The underside...
    view full answer...
    Image 1 for
  • Suspension and Tire/Wheel Upgrade Needed for a 3,500 lb Trailer Axle
    If you already have the axles installed then I would need to know the size of your hub as well as the bolt pattern on your hub as well to make a recommendation. I have attached a helpful article on bolt patterns for you to reference. If you don't know the diameter of your hub just let me know what the weight capacity is and I should be able to help you from there.
    view full answer...


< Previous
12



Do you have a question about this Trailer Axle?


Info for this part was:

Employee Lindsey S
Updated by:
Lindsey S
Employee Amanda M
Updated by:
Amanda M
Employee Manda E
Updated by:
Manda E
Employee Michael H
Expert Research:
Michael H
Employee Jameson C
Expert Research:
Jameson C
Employee John H
Expert Research:
John H
Employee David L
Written by:
David L
Employee Randy B
Installed by:
Randy B
Employee Chris R
Video Edited:
Chris R
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.