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  1. Trailer Axles
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  4. Universal Fit
  5. Spindles Only
  6. No Drop or Lift
Timbren Axle-Less Trailer Suspension - Standard Duty - No Drop - 4 Bolt Flange - 3,500 lbs

Timbren Axle-Less Trailer Suspension - Standard Duty - No Drop - 4 Bolt Flange - 3,500 lbs

Item # ASR3500S05
Our Price: $1,072.48
Trailer Axles
Shipping Weight: 48 lbs
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Get more clearance and a smoother ride when towing with Axle-Less trailer suspension. Built-in shock absorption limits rattle and bottoming out. E-Z Lube, standard-height spindle keeps your deck height the same. Fits any trailer frame width. Great Prices for the best trailer axles from Timbren. Timbren Axle-Less Trailer Suspension - Standard Duty - No Drop - 4 Bolt Flange - 3,500 lbs part number ASR3500S05 can be ordered online at or call 1-800-940-8924 for expert service.
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Timbren Trailer Axles - ASR3500S05

  • 3500 lbs
  • Universal Fit
  • Spindles Only
  • No Drop or Lift
  • Rubber Spring Suspension
  • No Hubs
  • Timbren
  • Easy Lube Spindles

Get more clearance and a smoother ride when towing with Axle-Less trailer suspension. Built-in shock absorption limits rattle and bottoming out. E-Z Lube, standard-height spindle keeps your deck height the same. 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
  • Keeps trailer deck height the same while increasing ground clearance
    • Standard-height 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 standard-height spindles built in, you'll get more clearance without having to raise your deck height.

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. This may make it difficult to navigate rough roads.

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 standard-height spindles on this setup will keep your deck height the same, so you'll get that extra clearance and still be able to easily load and unload your trailer. 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 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" 15" 1" 5" 3-13/16" 4-1/4"

Axle-Less dimensions top view

5-5/8" 6" 4-3/4" 1-3/4" 3-3/8" 3-11/16"

ASR3500S05 Axleless Trailer Suspension System by Timbren - Standard Height Spindle - Without Hubs - 3,500 lbs

Installation Details ASR3500S05 Installation instructionsAlternate Instructions ASR3500S05 Installation instructions

Customer Reviews

Timbren Axle-Less Trailer Suspension - Standard Duty - No Drop - 4 Bolt Flange - 3,500 lbs - ASR3500S05

Average Customer Rating:  4.6 out of 5 stars   (293 Customer Reviews)

Get more clearance and a smoother ride when towing with Axle-Less trailer suspension. Built-in shock absorption limits rattle and bottoming out. E-Z Lube, standard-height spindle keeps your deck height the same. Fits any trailer frame width.


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



The Timbren axle less suspension and Disk brake and disk brake controller system is still work great. will never go back to drum brakes or leaf spring axle suspension.


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


Easy to install. Tow like a dream!


Great product.. My company manufactures trailers with our own axle-less suspension, however we have abandoned our own design in favor of the Timbren system. It is far superior and more cost effective to use the Timbren. Also, the Timbren can be adjusted for camber, a nice feature on a trailer. Just be sure to order the correct spindle for your application. Exchanging the spindles with etrailer became a nightmare. I eventually kept the original spindles and bought new ones from Timbren directly.


I use these axles on off road trailer built to tackle the toughest 4x4 trails and the have held up to all the beating our customers can dish out


Easy to install. Big difference in trailer's suspension and handling. Highly recommended.


We don't use our trailer often but when we do, it performs flawlessly. We are so grateful for the function axles. It gives us the desired cushioned ride


Again nice addition to my trailer


Product was great easy to install, haven’t towed with it yet as I’m sill working on the repairs!


Thank u for your business!







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.


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.


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.


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.


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.


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 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.

Show More Reviews

See what our Experts say about this Timbren Trailer Axles

  • What Height is Recommended When Setting the Fender Height Above the Trailer Tire?
    The Timbren Axle-Less Trailer Suspension System - Straight Spindle Only - 3,500 lbs # ASR3500S05 has a deflection of 1-3/4 inches. I've attached a photo to assist. We recommend 4 inches above the tire in most cases for fender mounting to account for deflection and any road debris to not damage the tire or fender. That is based on a leaf spring system that will have slightly more deflection than the Timbren system, but it is a good reference and what I would use.
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  • Can Timbren Axle Less Kit Install on I-Beam Trailer Frame
    The Timbren Axle-Less Trailer Suspension System part # ASR3500S05 can install on an I-beam trailer frame so long as you box in the side of the frame that the bracket for the system attaches to. This essentially means you will have to weld a steel plate on the I-beam frame where the bracket for the above system would install. If you are able to do this then you will have no issue with installation. This part of the process is also somewhat covered in the installation manual as well.
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  • Is Grinding Parts Needed to Install Timbren Axle-Less Trailer Suspension System
    I took a look at the reviews and two of them mentioned having to do some grinding to install the Timbren Axle-Less Trailer Suspension System # ASR3500S05. One of those was some five years ago with regard to flat plates and a design change by Timbren shortly thereafter made it so that would not be necessary. The other was in regard to tubing that required some modification. In general these are relatively simple assemblies that will only require a crossmember above the area where you want...
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  • Could Dexter 3,500 lb Axle be Replaced with Timbren Axle Less Kit ASR3500S05
    If you have 3,500 lb axles currently that aren't getting overloaded you could replace them with the part # ASR3500S05 and it would work well. You have to be sure that you never exceed 3,500 lbs though. We can't ever recommend you tow your trailer with these installed over 3,500 lbs.
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    To replace a trailer axle, you will want to measure from brake flange to brake flange and center or spring seat to center or other spring seat. Those two measurements will help find the correct fit. I've attached a photo to assist. If the measurements don't line up with any of our through axle options, I recommend looking at the universal fit Axle-less Suspension systems like # ASR3500S05 that will work on any trailer frame and will replace your suspension as well. It will use the...
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  • Could Timbren Axle Less Setup be Used on a Tandem Boat Trailer Application
    The Timbren Axle Less kits like the part # ASR3500S05 were designed to provide the same height as a standard axle suspension kit as well as can be used in a tandem setup. They would work great on your Starcraft deck boat. The center of the spindle would be right at 2-13/16 inches from the bottom of the trailer frame it attaches to.
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  • Can Spindle On Timbren Axle-Less Trailer Suspension System Be Reversed
    You can reverse the mounting of the spindle mounting on the Timbren Axle-Less Trailer Suspension System, part # ASR3500S05. I verified this with my contact at Timbren. The toe-in will need to be set when installing this system and it comes with shims that allow you to adjust the camber. The installation instructions that are included explain how these adjustments are made.
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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...
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  • Amount of Drop on Timbren Axle-Less Suspension Systems for 3500 Pound Trailers
    When I search the Timbren site for # ASR3500S06 the description states the following: 3500lbs Axle-Less trailer suspension with 4? lift and regular spindle arms with brake flange. This matches what we have. The issue is not the spindle location relative to the trailer frame. It is the amount of drop in the spindle. When I search for # ASR3500S05 on the Timbren site the description reads: 3500lbs Axle-Less trailer suspension with regular spindle arms with brake flange. No measurement given...
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  • 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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  • 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...
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  • 3,500 lb. Complete Axle Assembly
    I have a solution for you but unfortunately we do not carry Axis axles, therefore I don't have a way to look up the parts you provided me. However, given the information you provided it looks like you are needing 3,500 lb. axles that are 94-1/2" long with a Spring Center length of 70". We do not have any axles with those specifications. But the Timbren Axle-Less Trailer Suspension System # ASR3500S05 would be a 3,500 lb. Axle-less system that will work for you.
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  • Replacement 3,500 Lbs Axle For My 2014 Venture RV Sport Trek
    I do have a solution for you, but it would require you to replace both of your axles. Unfortunately, we do not have a standard axle with the measurements you need. If you do not want to try and find this axle at a local retailer or have someone fabricate an axle for you, my recommendation would be to install a Timbren system. The Timbren Axle-Less Trailer Suspension System - Straight Spindle Only - 3,500 lbs, part # ASR3500S05, is an axle-less system that either bolts on your trailer or...
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    We do stock trailer axles. I'm linking our selection for you to filter through which includes everything from standard axles to the Timbren Axle-Less kits like part # ASR3500S05 which is the equivalent of a standard 3,500 lb axle system. If you can let me know what weight rating you're needing and whether it's a standard axle or one of the Timbren kits I'll be more than happy to help you find the correct one for your application. For a standard axle I will need to know the hub-face and...
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  • Recommendation to Replace Trailer Axle with 70" Spring Center and 85-1/2" Hub Face Length
    I do have a potential option for your trailer, however we do not have any standard axles that match the spring center and hub face lengths on your existing unit. If you don't want to go through a local trailer shop or fabricator to obtain a matching thru axle, I recommend taking a look at the Timbren Axle-Less System instead. These use independent suspension components that will install on any frame width and usually eliminate the need for a thru-axle altogether. Because the progressive-rate...
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  • Replacement Options for 3,500 Pound Dexter Torflex Axle
    What you have is a 3,500 lb Dexter #10 Torflex axle with a 94" hub face and 72" outer bracket measurement. The only option we carry for a torsion axle replacement is the Timbren Axle-Less Trailer Suspension # ASR3500S05. This system is similar to a torsion axle but eliminates the axle beam. It fits any trailer width so matching your current measurements is not a concern. I have attached an installation video below for your reference.
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  • Can You Mix 3,500 Lb and 5,200 Lb Timbren Axle-Less Trailer Suspension Systems
    The Timbren Axle-Less Trailer Suspension System part # ASR3500S05 is indeed an excellent option to either replace an existing trailer axle or upgrading from single to tandem axles. If you were upgrading, using two axle-less kits would indeed be a walk in the park when compared to welding on new leaf springs hangers. That said, you will need to use two kits with the same weight capacity as the dimension and durometer of the rubber is not the same for different weight capacities. It's better...
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  • How Many Sides Does the Timbren Axle-Less Trailer Suspension System Come With
    The Timbren Axle-Less Trailer Suspension System part # ASR2000S02 comes with both a left side and a right side which would be the equivalent of a single axle trailer. The 2,000 lb weigh capacity is for both sides total which would be the equivalent of a 2,000 lb trailer axle. If you would like to have the equivalent of a tandem axle trailer then you would just need to order a quantity of "2". We also have higher rated options available as well like part # ASR3500S05 which has 3,500 lb total...
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  • Timbren Axle-Less Trailer Suspension for 2011 Gulfstream Visa Travel Trailer
    Timbren axle-less trailer suspensions like # ASR5200S01 and # ASR3500S05 can be bolted on to the trailer frame; welded-on installation is fine too. It's your choice. Since the Gulfstream Visa M-19RSD single-axle travel trailer has a dry weight of 2832-lbs and is rated to sleep 5 persons I would expect its axle is rated for more than 3500-lbs. You want to ensure you replace the standard beam axle with a Timbren kit rated for the same weight capacity. Your OEM axle should have a plate or...
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  • 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.
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  • How to Increase Ground Clearance on a Trailer
    Since you measured 26-1/2 inches on your old springs you'll likely need 26 inch springs because they will sag and elongate as they wear. Yours are 6-Leaf so you'll need two of # e27SR which are rated for 4500 lbs. This is plenty for a trailer the size of yours. We do not carry an axle that will fit your 4 foot trailer, so a new axle would need to be sourced locally. The good news here is right now you have a drop axle. Hence your clearance issue in your drive way. If you replace the...
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  • Replacement Axles Needed for a 1966 Avion Holiday Travel Trailer
    The best solution that we have for you is to use the Timbren Axle-Less Trailer Suspension. These come with built-in rubber suspension that ease the installation process and work independently of each other for the best trailer ride out there. Typically for a tandem axle setup you will have two 3,500 lb axles or two 5,200 lb axles. We have these Timbrens in both weight ratings as parts # ASR3500S05 and # ASR5200S01 respectively. If you are looking for standard trailer axles then you...
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