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  1. Trailer Axles
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  4. Universal Fit
  5. Spindles Only
  6. Drop - 4 Inch
Timbren Axle-Less Trailer Suspension - Standard Duty - 4" Drop - 4 Bolt Flange - 3,500 lbs

Timbren Axle-Less Trailer Suspension - Standard Duty - 4" Drop - 4 Bolt Flange - 3,500 lbs

Item # ASR3500S04
Our Price: $1,020.03
Trailer Axles
Shipping Weight: 50 lbs
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Get more ground clearance and a smoother ride when towing with Axle-Less trailer suspension. Built-in shock absorption limits rattle and bottoming out. E-Z Lube, 4" drop spindle lowers deck height for easy loading. Fits any trailer frame width. Great Prices for the best trailer axles from Timbren. Timbren Axle-Less Trailer Suspension - Standard Duty - 4" Drop - 4 Bolt Flange - 3,500 lbs part number ASR3500S04 can be ordered online at or call 1-800-940-8924 for expert service.
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Timbren Trailer Axles - ASR3500S04

  • 3500 lbs
  • Universal Fit
  • Spindles Only
  • Drop - 4 Inch
  • Rubber Spring Suspension
  • No Hubs
  • Timbren
  • Easy Lube Spindles

Get more ground clearance and a smoother ride when towing with Axle-Less trailer suspension. Built-in shock absorption limits rattle and bottoming out. E-Z Lube, 4" drop spindle lowers deck height for easy loading. Fits any trailer frame width.


  • 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
  • Allows for simple bearing maintenance with built-in grease zerks


  • 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 (without hubs)
  • Weight capacity: 3,500 lbs
  • Brake flange configuration: 4 bolt
  • 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 (sold separately)
    • Inner: L68149
    • Outer: L44649
  • Races (sold separately)
    • Inner: L68111
    • Outer: L44610
  • Seal: 10-19 (sold separately)
    • 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.

Axle-Less dimensions front view

13" 16-3/8" 1" 5" 0" 4-1/4"

Axle-Less dimensions top view

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 - Without Hubs - 3,500 lbs

Installation Details ASR3500S04 Installation instructionsAlternate Instructions ASR3500S04 Installation instructions

Customer Reviews

Timbren Axle-Less Trailer Suspension - Standard Duty - 4" Drop - 4 Bolt Flange - 3,500 lbs - ASR3500S04

Average Customer Rating:  4.6 out of 5 stars   (288 Customer Reviews)

Get more ground clearance and a smoother ride when towing with Axle-Less trailer suspension. Built-in shock absorption limits rattle and bottoming out. E-Z Lube, 4" drop spindle lowers deck height for easy loading. Fits any trailer frame width.


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.


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


My trailer is an enclosed race car carrier originally built with dual axles and leaf springs. The maximum weight of the trailer and load would be about 5,000lb.

This Timbren product is well engineered, well constructed and does what it is designed to do. Much better system than the dual axle, leaf spring set up.

Installation may me a bit more complicated than the videos or supplied directions indicate. Look at the videos and directions and your trailer and plan ahead. Take measurements, decide on how to reinforce the frame and buy high quality hardware if you plan on bolting everything together.

This Timbren product would be a great choice if you were building a trailer from scratch. Choosing to convert an existing trailer suspension is a more complicated choice. For me it was worth the effort.


Product looks great. I had to some leg work to get shipping moved along but otherwise satisfied.


Packaging very good and shipping fast.
communication and shipment was tracked by company representative.


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.


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.


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.


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.


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.


Five star. shipping was slow. Product was great 14 K 14 plies under 2000 pounds independent suspension. Low fast and sassy. Yep that’s how I build them.


Incredible system. Handled our Overland trek through Colorado and Moab. These axles on our 1917 Ford bed ran multiple Jeep Badge of Honor trails. The suspension handled flawlessly. Handles off camber rocks and drop offs smoothly. We ran the 4 inch lift and off road offset to fit the factory Jeep wheels.


I put these on an off-road trailer build. They have been fantastic! I've done many miles and they held up great. Highly recommend.


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


Pleased with ETRAILER, will order here again. Not as happy with the torsion axle setup. 2 inch square opening for tying both axles together with your own 2" square tubing are not shaped to match 2x2x1/8 tubing. Grinding and welding of tubing required to make it fit. Also found the overslung stub axle left the end of the pivot arm without much ground clearance though the unit was intended and spec'd for atv tire off road use. A pivot arm with mounting pads top and bottom would be better and allow the user to choose high or low clearance use. I found the units were perfectly suited to offroad use once I fabricated new mounting pads and welded them to the bottom of the arms.


Purchased 2 sets of the Timbren 1200 Axle-less systems for upgrading the suspension on an older 30' ft glider trailer. Single axle with small (13") tires made towing tough due to porpoising, dragging on drive entrances do to poor flotation; also German made and metric, no repair parts. GVW 2000 lbs equated to bouncy ride.

Dual sets now allow the trailer to ride over bumps and sharp inclines easily, smoothly, little bounce on country roads; porpoising is history. My glider now rides securely, safely, quietly.

Install time 4 1/2 hours (includes head-scratching). Results are outstanding, units are totally solid. Recommend the square tube interconnect, easy and quick - trailer frame was on the light side, so a precautionary fix. Clean look underneath.

Ordered 5 wheels w/tires, very nice.

Helpful neighbor so impressed he ordered a HD single set for his new DIY snowmobile trailer.

Customer satisfaction 100%, from phone order, online support, product information, immediate shipping, install instructions, followup... HIGHLY RECOMMENDED!


I installed these on my single axle travel trailer to replace the axle and leaf springs. Weight savings was a wash with the required steel tube for added stability. I installed on an I-Beam using aluminum plate as a spacer. It took my friend and I 3 days to install everything. The hardest part was rerouting my black pipe propane line. I also had to install it just back of center due to a steel cross beam being in the way of the middle bolt hole. I replaced the brakes and hubs as well as the wheels to match the new hubs.

Overall we've been super happy with this upgrade. The trailer rides a lot smoother. I'm not finding random screws on the floor after a long bump ride.

We decided to do this after our leaf spring broke 2 times, 12k miles between. We were done dealing with a subpar suspension. I probably would not recommend doing this if your leaf springs are working for you. We put a lot of miles on our trailer. We aren't weekend campers.


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.


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.


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.


Actual trailer weight 1540#, 210# tongue weight. 1310# suspension load. After 600 miles, both springs collapsed making the suspension rigid. Have received replacement springs from Timbren but haven't had a chance to try them out.


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


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


Needed a suspension system that I could make a low profile kayak trailer, that would fit in a specific area next to my garage. These were excellent that I could make the trailer any width I wanted. Easy to install and well made.


These units install easily, are well made, and perform great! The trailer doesn't bounce around like you see a lot of trailers do while traveling down a bumpy road. I traveled some unpaved roads with no issues. I am certainly glad I went axleless. I installed with 15" tires. Problem is I didn't go big enough.

I intended to install on an existing trailer that I had. Changed my mind and built a new trailer. The new trailer came in heavier than I had planned. 2k pound capacity is now too small. I have to watch what I load the trailer with so I don't over load the suspension. I intend on buying the 3500 pound units when I have the money.

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See what our Experts say about this Timbren Trailer Axles

  • If Trailer Is Lifted Off the Ground Will the Timbren Axle-Less Trailer Suspension System Come Apart
    That should not be able to happen because the rubber spring is attached to the 2 parts. So unless it was already taken apart or something was broken the lower part should not be able to separate from the upper part of the Timbren Axle-Less Trailer Suspension System, # ASR3500S04.
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  • Can Axle-Less System Be Used To Replace 2 Axles On 26 Ft 1979 Avion Travel Trailer
    Using an axle-less system will work for your trailer. There are some things you want to consider when using an axle-less system. You will want to make sure you install axles that have the same distance from the frame to the center of the wheel hub. This will allow the trailer to remain level when towing and will not put more weight or stress on the front or the rear axles. You will need to know the weight capacity you need for the axles and if you want straight axles or axles with a...
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  • Can a Leaf Spring Axle be Replaced by a Timbren Axle-Less System?
    Yes, you can replace a leaf-spring axle with a torsion axle on trailers. I would give you a recommendation but unfortunately we do not carry torsion axles. Just be sure you replace your current axle with one that has the same weight capacity.
    view full answer...
  • How Far Does the Timbren Axle-Less Trailer System Drop When the Trailer is Raised
    I spoke to my contact at Timbren and he informed me that if you were to jack up a trailer with a Timbren Axle-Less Trailer Suspension System # ASR3500S04 installed it would only drop as much as the suspension system had compressed from the weight of the trailer. The rubber spring is attached at the bottom and top of the assembly so it would not just swing down when the load was removed.
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  • Will Timbren Axle-Less Trailer Suspension System Work Well On Small Custom Utility Trailer
    With the trailer towing up to 5,000-lbs you can replace both axles on your trailer with 2 sets of the Timbren Axle-Less Trailer Suspension System, part # ASR3500S04, and they will be more than sufficient. The system is designed to make the ride much smoother regardless whether you are hauling a load or not. The progressive springs get stiffer as more weight is added but are always engaged to reduce rattle and bottoming out. The axle-less system does come with a 4-bolt brake flange installed...
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  • What is the Weight Capacity of Set of 4 Timbren Axle-Less Suspension Set Up As Tandem Axles
    Each paired set of the Timbren Axle-Less Suspension, like # ASR5200S04 and # ASR3500S04, can be compared as one traditional axle when trying to compare the weight capacities. The Timbren # ASR5200S04 are rated at 5,200 lbs or 2,600 per Timbren unit. If you install 4 total in a tandem axle set-up, then the weight capacity would be 10,400 lbs on the axles. The Timbren # ASR3500S04 are rated at 3,500 lbs per pair and in a tandem set-up the axle capacity will be 7,000 lbs.
    view full answer...
  • Dimension Drawing for the Timbren Axle-Less Suspension System # ASR3500S05
    I attached a picture that shows all of the dimensions of the Timbren Axle-Less Suspension System, # ASR3500S05 that you are interested in. Since I don't know much about your setup the best recommendation I can make would be for you to check out the dimensions I attached and if you decide you do need a 4 inch drop you would want the part # ASR3500S04 instead.
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  • Determining if Installing Timbren Axle-Less System Will Change Trailer Ride Height
    The Timbren Axle-Less Systems come in a variety of different spindle designs that may allow you to increase, decrease, or simply maintain your trailer's current ride height. The Timbren 3,500 Pound # ASR3500S04 that you were looking at features 4 inch drop spindles which would lower the ground clearance on the trailer. It's hard to say how much this would differ from your current setup since it depends on exactly what kind of torsion axles you have, but I can tell you that this system...
    view full answer...
    Image 1 for Image 2 for
  • Solution for Replacement Axles for Trailer With Tandem Torsion Axles
    I do have a solution, but replacement torsion axles are not something that we carry. What I can offer instead is the Timbren Axle-Less Trailer Suspension System. This system is similar to your current torsion axles but with 2 separate units. This also means it fits any frame width. For a 3,500 lb replacement you will need one of the following: -Straight Spindle # ASR3500S05 -4" Drop Spindle # ASR3500S04 -4" Lift Spindle # ASR3500S06 You will be able to use your existing brake assemblies...
    view full answer...
  • Availability of Lift and Drop Versions of Timbren 3,500 lb Axle Less System
    We do have the 3,500 lb Timbren Axle Less kits in a few different variations. I attached a link to a page that has all of them listed but for a 4 inch lift for off-road (wider) tires we have the part # ASR35HDS02, 4 inch lift for standard tires part # ASR3500S06. For a 4 inch drop like you mentioned we have the part # ASR3500S04. Current pricing is available below at the product links.
    view full answer...
  • What Options Are Available To Lower The Ride Height Of A Trailer?
    Depending on how much you are looking to lower your trailer there are a few possible options. One option is to replace the ST205/75D15 tires currently on your trailer with the Westlake ST205/75R14 Radial Trailer Tire w/ 14" Silver Mod Wheel - 5 on 4-1/2 - Load Range D # 274-000053 which are about 1.5" shorter overall. Another option is to replace your axles with something Timbren Axle-Less Trailer Suspension System - 4" Drop Spindle Only - 3,500 lbs # ASR3500S04 which has a 4" drop spindle....
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  • Recommended Replacement for Torsion Axle on Shorelandr Boat Trailer
    I do have replacement options for you but we don't carry torsion axles which I assume is what you have so the best option we can offer you is an axle-less like system the Timbren Axle-Less Trailer Suspension part # ASR3500S04 which also has a built-in drop like your existing. It has a 3,500 lb weight capacity but there's several other variations if this isn't what you need, just check the list below. These systems are great because they provide much better ground clearance and ride quality...
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  • Can Kodiak Disc Brakes be Added to 3,500 Pound Timbren Axle-Less Suspension System
    The Timbren axle-less system # ASR3500S04 using 10-19 seals, # RG06-050. All of the Kodiak disc brake kits for 3,500 pound axles use this same seal so you will be able to use the brakes on the Timbren axle-less system. Assuming the combined weight of the boat and trailer is under 3,500 pounds then the axle-less system will work fine. To get some idea of the weight you can take the boat and trailer (as it is now) and weigh it at a truck scale or a place that sells bulk gravel might be able...
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  • Replacement Axle Options For a 1998 StarCraft StrarLounge 1224 Pop Up Camper Trailer
    We do have some Timbren Axle-Less suspension systems you may be able to use in place of the torsion axle on your 1998 StarCraft StarLounge 1224 as we do not carry any torsion axles. You will need to take some measurements from your frame to the hub face on your current axle as well as the bottom of the axle to the center of the hub vertically as I have no way to know exactly what axle was installed on your camper. Here is a list of the different 3,500lb Timbrens we offer that may fit your...
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  • Does 4 inch Drop For Timbren Axle Less Systems Mean the Trailer will Sit Closer to Ground
    The Timbren Axle-Less Trailer Suspension System # ASR3500S04 has a 4 inch drop built into it so that it would sit 4 inches lower than a straight spindle setup like the part # TASR7KS01 that you referenced. The trailer will end up sitting 4 inches closer to the ground.
    view full answer...
  • Correct Hub with Timbren Axle Less Suspension ASR3500S04
    I checked your order notes and the Timbren Axle Less Kit part # ASR3500S04 that you referenced is compatible with the hub you bought as well part # 84545UC1-EZ. The Timbren kit has 3,500 lb axle spindles which is the exact same as what the hub you bought is designed to fit. You might make sure that the hub is fully seated all the way onto the spindle and see if that allows seal to fit the spindle better.
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  • Compatibility of Timbren Axle-Less Suspension System # ASR3500S04 With Existing Trailer Brakes
    The brake flanges installed on the Timbren Axle-Less Trailer Suspension System # ASR3500S04 are standard 4-bolt types that are quite common. You can check your electric brake assemblies to confirm they use the same mounting bolt pattern. If they fit and still have plenty of life left in them then you're fine to re-install them on the Timbrens. You also need to confirm the bearings used in your existing hubs to ensure your hubs' compatibility with the spindles in this kit. If your current...
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  • Timbren 2,000LB & 3,500LB Axle-Less Suspension Systems With #84 Spindle and 4 Bolt Brake Flanges
    Here is a list of the Timbren Axle-Less Trailer Suspensions which have the #84 size spindle with a 4 bolt brake flange. 3,500LB Systems -No Drop # ASR3500S05 -4" Lift # ASR3500S06 -4" Drop # ASR3500S04 2,000LB Systems -No Drop # ASR2KHDS01 -4" Lift # ASR2KHDS04 -4" Drop # ASR2KHDS05 -No Drop, Long Spindle # ASR2KHDS02 -4" Lift, Long Spindle # ASR2KHDS03 -4" Drop, Long Spindle # ASR2KHDS09 Please let me know if you need any help selecting the brakes or hubs needed for these.
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  • Replacing Torsion Axle with Timbren Axle-Less Suspension System on Boat Trailer
    You can definitely replace the torsion axle on your trailer with a Timbren Axle-Less Trailer Suspension System like the 3,500 pound # ASR3500S04 referenced in your question. Since you will be replacing your axle, the easiest way to install this system will be to install a piece of 2-inch-square tubing through the integrated hole in the Axle-Less suspension. Then you will just need to bolt the suspension to the side of the trailer's frame with three bolts. You will just need to make sure...
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  • Replacement 3500 Pound Axle for Basstracker V17 Boat Trailer
    The closest axle we have to fit your measurements is the Dexter Axle # T3584F-EZ-8974. This has a hub face of 89 inches, spring center of 74 inches, 3500 pound capacity and EZ-Lube Spindles. It is not a drop axle like yours is currently. To gain the drop you can use the Timbren Axle-Less System with 4 inch Drop # ASR3500S04. The axle-less systems provide a suspension without the traditional cross tube axle.
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  • Recommended Disc Brakes for Timbren Axle-Less Suspension Systems
    Disc brakes can be used with the Timbren Axle-Less Suspension systems, however, Timbren does not offer an axle-less suspension kit with disc brakes. If you want to use disc brakes, I recommend buying the Axle-Less Suspension System - 3,500 lbs, # ASR3500S04, which you reference, along with the Kodiak Disc Brake Kit - 3,500 lbs, # K2HR35D. Buying the Timbren Axle-Less Suspension system without the hub and buying the disc brakes separately will save you money over buying a kit that includes...
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  • Adding Axle-Less Suspension System on a 1979 Avion Travel Trailer With Existing Axles
    In order to potentially add a Timbren Axle-Less suspension system to your 1979 Avion travel trailer, there are few things to consider: Adding an Axle-Less system will most likely require extensive modification of your trailer and re-aligning of your current axles. The reason you will need to modify your travel trailer is because the wheel well is not large enough to accommodate a third axle. It's also necessary to re-align your axles because the center point of the axles will change from...
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  • Hubs with 5 on 5 Bolt Pattern that Will Fit a Timbren Axle-Less Suspension System
    There are Timbren axle-less suspension systems that do not come with hubs so that you could add your own such as # AKIHUB-550-35-EZ-K. But the hubs with 5 on 5 bolt patterns that would also fit a Timbren system only accept up to 15 inch wheels. The other issue is that vehicle wheels are not meant to be used on trailers and often have an offset (mounting surface of wheel not in the dead center of the wheel) whereas most trailers take wheels with a zero offset. With that said the hub listed...
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  • 2,000 lb Timbren Heavy-Duty Axle-Less Trailer Suspension With 5 on 5 Inch Bolt Pattern
    There isn't a 5 on 5" hub that comes together with the Timbren Heavy-Duty Axle-Less Trailer Suspension # ASR2KHDS05, so you will need to get the system and hubs separately. What you will need are: - Timbren Heavy-Duty Axle-Less Trailer Suspension - 4" Drop Spindle - Regular Tires - 2,000 lbs # ASR2KHDS05 - Trailer Idler Hub Assembly for 3,500-lb E-Z Lube Axles - 5 on 5" # AKIHUB-550-35-EZ-K Since the Timbrens use E-Z Lube spindles you will want to use the E-Z Lube hubs. I have added links...
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