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  1. Trailer Axles
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  5. Spindles Only
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Timbren Axle-Less Trailer Suspension - Heavy Duty - Long Spindle w/ No Drop - 5 Bolt - 3.5K
Timbren

Timbren Axle-Less Trailer Suspension - Heavy Duty - Long Spindle w/ No Drop - 5 Bolt - 3.5K

Part Number: ASR35HDS01
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$1,276.61
Trailer Axles
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Designed for use with wide, off-road tires, this setup gives you more clearance and a smooth ride. Built-in shock absorption limits rattle and bottoming out. E-Z Lube, long, standard-height spindle maintains deck height. Fits any trailer frame width. Great Prices for the best trailer axles from Timbren. Timbren Axle-Less Trailer Suspension - Heavy Duty - Long Spindle w/ No Drop - 5 Bolt - 3.5K part number ASR35HDS01 can be ordered online at etrailer.com or call 1-800-940-8924 for expert service.
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Timbren Trailer Axles - ASR35HDS01

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

Designed for use with wide, off-road tires, this setup gives you more clearance and a smooth ride. Built-in shock absorption limits rattle and bottoming out. E-Z Lube, long, standard-height spindle maintains deck height. Fits any trailer frame width.


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 overlanding or off-road adventures
    • Long spindle accepts wide, off-road trailer tires
    • Robust, heavy-gauge steel construction is built to handle abuse
    • 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


Specs:

  • Application: single- and tandem-axle trailers that use wide, off-road 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: 5 bolt
  • Bolt hole diameter: 5/8"
  • Suspension travel: 2-5/8"
  • 3-Year limited warranty


Tire, Wheel, and Hub Compatibility

  • Tire size: 35 x 12.5 x 20 or smaller
  • Wheel diameter: 20" or smaller
    • This assumes a wheel with zero offset
  • Bearings (sold separately)
    • Inner: 25580
    • Outer: 14125A or 15123
  • Races (sold separately)
    • Inner: 25520
    • Outer: 142376 or 15245
  • Seal: 10-36 (sold separately)
    • Inner diameter: 2.250"
    • Outer diameter: 3.376"

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 3" 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 terrain. 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 off-road terrain.


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 want to go off-road. 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 3" 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 5, 5/8" 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 3" 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

A B C D E F
14-15/16" 17-1/4" 1-1/2" 6-1/4" 3-1/2" 5"


Axle-Less dimensions top view

G H I J K L
5-5/8" 8" 5-3/4" 2-1/4" 3-1/4" 5-1/4"




ASR35HDS01 Axleless Trailer Suspension System by Timbren for Off-Road Tires - Standard Height Long Spindle - Without Hubs - 3,500 lbs HD

Installation Details ASR35HDS01 Installation instructionsAlternate Instructions ASR35HDS01 Installation instructions



Ratings & Reviews

4.6

155 reviews
Designed for use with wide, off-road tires, this setup gives you more clearance and a smooth ride. Built-in shock absorption limits rattle and bottoming out. E-Z Lube, long, standard-height spindle maintains deck height. Fits any trailer frame width.

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See what our Experts say about this Timbren Trailer Axles

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  • Will Timbren Axle-Less Trailer Suspension System HD 3,500 Lbs Work without Brakes
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  • Can Firmer Springs Be Installed On a Timbren 2,000LB HD Axle-Less Trailer Suspension?
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  • Suspension System Recommendation for an Off-Road Tear Trailer that is Breaking Leaf Springs
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  • Recommended Timbren Axle-Less Suspension for 3,100 lb Off-Road Trailer
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  • 3,500 lb Timbren Axle-Less Trailer Suspension For Use With Large Tires & 6 on 5-1/2 Hub Bolt Pattern
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  • Can I Use A 3,500Lb Timbren Axle-Less Trailer Suspension System With Ford 6 X 135 Hubs
    Your 6 X 135 6 lug hubs, are not trailer hubs. I only have timbren axle less suspension systems for trailers, so your hubs are not compatible with anything we offer. The closest thing I have to what you are looking for is Timbren Axle-Less Trailer Suspension System w Hubs - Straight Spindle - 5 on 4-1/2 -,part # A35RS545. While it does come with hubs, it would require you to use a 5 on 4-1/2 wheel. You may be able to find trailer wheels that match your truck's wheels in appearance. I...
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  • Timbren Kit Recommendation for Trailer for 6 on 5.5 inch Bolt Pattern and Brake Assemblies
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  • Timbren 3,500 Pound Axle-Less Trailer Suspension System to Work with Hydraulic Handbrake
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  • Timbren Axle-Less Suspension System for Off-Road Tear Camper
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  • Dimension Pictures of Timbren Axless Less Kit # ASR35HDS01
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  • Is Timbren 3500-lb Axle-Less Trailer Suspension # ASR35HDS01 Suitable for Off-Road Tires
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  • Recommended Hub/Drum for Timbren 3,500 Lb Axle-Less Trailer Suspension System
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  • Replacing A Dexter Axle Rated At 3,500 Lbs With HF Measurement of 73 And SC Measurement Of 58
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  • Comparing Timbren Axle-Less Suspension Kits for Regular Tires vs. Off-Road Tires
    The 3500-lb Timbren axle-less suspension kits # ASR3500S06 (regular tires) and # ASR35HDS01 (off-road tires) differ in that the kit for wider off-road tires provides a 2-inch greater distance from the mounting point on the trailer frame to the hub face. This 8-inch distance versus the 6-inches for the regular tire kit means wider off-road tires will have the necessary clearance to avoid contacting the trailer frame. The linked image for off-road kit # ASR35HDS01 shows the wider 8-inch...
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  • Is There a Trailer Hub With 5 x 150 Bolt Pattern For 3,500 lb Timbren Axle-Less
    Hey Brett, So I'm sorry to tell you that what you are asking for doesn't actually exist; there are simply no trailer hubs that have a 5 x 150 bolt pattern, or a way to make that happen. You can still get a 3,500 lb Timbren Axle-Less system for a larger wheel, but it needs to be with a hub and drum with a standard bolt pattern. For the system you can use the 3,500 lb Timbren Axle-Less Trailer Suspension # ASR35HDS01. Then for a hub and drum you would need part # AKHD-655-6-EZ-K, with Electric...
    view full answer...


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