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  1. Trailer Axles
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  5. Spindles Only
  6. Lift - 4 Inch
Timbren Axle-Less Trailer Suspension - Heavy Duty - 4" Lift - 5 Bolt Flange - 3,500 lbs
Timbren

Timbren Axle-Less Trailer Suspension - Heavy Duty - 4" Lift - 5 Bolt Flange - 3,500 lbs

Part Number: ASR35HDS05
In Stock
$1,253.64
Trailer Axles
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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, 4" lift spindle raises deck height for additional clearance. Fits any trailer frame width. Great Prices for the best trailer axles from Timbren. Timbren Axle-Less Trailer Suspension - Heavy Duty - 4" Lift - 5 Bolt Flange - 3,500 lbs part number ASR35HDS05 can be ordered online at etrailer.com or call 1-800-940-8924 for expert service.
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Timbren Trailer Axles - ASR35HDS05

  • 3500 lbs
  • Universal Fit
  • Spindles Only
  • Lift - 4 Inch
  • Rubber Spring Suspension
  • Standard Grade
  • Timbren

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, 4" lift spindle raises deck height for additional clearance. 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
    • Robust, heavy-gauge steel construction is built to handle abuse
    • Black powder coat resists rust and corrosion
  • Raises trailer deck height for maximum ground clearance
    • 4" Lift spindle is built in
  • 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 (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: ST235/85R16 or smaller
  • Wheel diameter: 16" 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 lift spindles built in, you'll get maximum ground 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. 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 lift spindles on this setup will also raise your deck height, making navigating off-road terrain 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" lift 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
14-5/16" 16-1/8" 1-1/2" 6-1/4" 7-5/16" 5"


Axle-Less dimensions top view

G H I J K L
5-5/8" 6-11/16" 5-3/4" 2-1/4" 3-1/4" 5-1/4"




ASR35HDS05 Axleless Trailer Suspension System by Timbren - 4" Lift Spindle - Without Hubs - 3,500 lbs HD

Installation Details ASR35HDS05 Installation instructionsAlternate Instructions ASR35HDS05 Installation instructions



Ratings & Reviews

4.6

164 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, 4" lift spindle raises deck height for additional clearance. Fits any trailer frame width.

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See what our Experts say about this Timbren Trailer Axles

  • Hub/Drums and Brake Assemblies to Use with Timbren Axle Less Kit HD For 3,500 lb Axles
    Hey Michael, the correct hub/drum to use with the Timbren kit part # ASR35HDS05 would be the part # 8-201-5UC3-EZ which has a 6 on 5-1/2 inch bolt pattern. Then for brakes you'd want the part # AKEBRK-7-SA. The hubs mentioned have a 6 lug bolt pattern, do you have wheels and tires already?
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  • Looking For Replacement Axles And A Way To Lift My 2019 Scamp Camper
    Hey Brian, We do have the Timbren axlelss axles like # ASR35HDS05 which in my opinion would be the way to go. It is going to be the same 3,500lb capacity like your current ones but also provide a 4" lift on that trailer, hopefully getting you closer to a level ride. We have straight axle beams as well. For those I would need to know your trailers hub face length and spring center length to track that down. That axle pair with something like the Dexter over under kit # K71-384-00 would...
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  • Recommended Suspension and Axle Upgrade For 2018 Grand Design 2800BH
    I have another option for you, but Trailer leaf springs are not designed for off-roading and can break when used in rough off-roading conditions. I do have a great option for you which is the Timbren Heavy Duty Axle-Less Suspension System # TASR35HDS04. This system has a 3500lb weight capacity which matches your current axles, but being the heavy duty version they are made of thicker metal making them a great option for off-roading. The Timbren # TASR35HDS04 will replace your current leaf...
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  • Correct Lift Kit for #10 Torflex Single Axle on Lance 1575 Trailer
    A #9 Torflex axle is rated for 1,000 - 2,200 lbs so since your Lance 1575 weighs well over 2,200 lbs dry I'm confident you have a #10 Torflex axle (which can be rated for 2,300 - 4,000 lbs). With that in mind, since you have a single axle trailer you need the Torflex Lift Kit # K71-707-01 which provides 2-5/8" of lift. Please note that if you have it mounted from the top then you also need the Side-Mount Frame Installation Hardware Kit # DX54FR to complete the installation. Just please...
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  • Recommended Timbren 3,500 Axle-Less System with 4 Inch Lift Spindle for Lance Trailer
    The only real difference between the Timbren Heavy-Duty Axle-Less Trailer Suspension with 4" Lift Spindle - 3,500 # ASR35HDS05 and the standard Timbren # ASR3500S06 is that the Heavy-Duty model features a larger spindle that would accommodate larger hubs and wheels. I am not sure why Timbren would have suggested the Heavy-Duty model for your application but the standard Timbren # ASR3500S06 features the capacity you need, the lift you are wanting, and would allow you to retain the use...
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    Image 1 for
  • Timbren Axle-Less System to Replace Torsion Axle on 2020 Lance 1995 Travel Trailer
    We have options for a suspension system for your 2020 Lance 1995 travel trailer, but it uses torsion axles, which are not something we offer, so the best alternative we can provide is an axle-less system, the Timbren Heavy-Duty Axle-Less Trailer Suspension. The Timbrens are simply bolted or welded on so you do not have to worry about finding an axle that meets any specific measurements. The simplest way to install it is to use a piece of 2-inch by 3-inch tubing through the integrated hole...
    view full answer...
    Image 1 for
  • Replacement Axle-Less System With Lift for 2022 Forest River Rockwood Mini Lite Travel Trailer
    We do have an axle-less system that will provide your 2022 Rockwood Mini Lite with additional clearance. The Timbren Axle-Less Trailer Suspension System is what you need. Based on what I have found, you have 3,500 lb axles on your travel trailer. I recommend verifying this information to be sure. Assuming that is correct we have the following options: -Heavy-Duty 2" Lift Spindle - Standard Tires # TASR35HDS07 -Heavy-Duty 2" Lift Spindle - Off-Road Tires # TASR35HDS06 -Heavy-Duty 4" Lift...
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  • Recommended Axle and Suspension System for 2015 Rockwood Freedom 1940LTD
    For your 2015 Rockwood Freedom 1940 LTD, I recommend the Timbren Heavy-Duty Axle-Less Trailer Suspension - 4" Lift Spindle - Regular Tires - 3,500 lbs # ASR35HDS05. This will give you the suspension components integrated into the axle-less spindles. With this kit, I recommend the Electric Trailer Brake Kit - Self-Adjusting - 10" - Left and Right Hand Assemblies - 3,500 lbs # AKEBRK-35-SA along with the Trailer Hub and Drum Assembly - 3,500-lb E-Z Lube Axles - 10" Diameter - 5 on 4-1/2...
    view full answer...
  • Does the Timbren Silent Ride Provide Greater Suspension Travel Than Standard Leaf Springs
    I may have a solution for you, but I'm not sure the Timbren Silent Ride Suspension # TSR3500S06 is exactly what you're looking for. The Timbren Silent Ride does not necessarily allow for more travel than your current leaf spring suspension system, but instead is designed to provide a softer ride that will enhance stability. Leaf spring suspension systems don't typically allow for a lot of articulation in the way that a vehicle's coil and shock absorber system would. If you're concerned...
    view full answer...
  • What is the Load Capacity of the Timbren Axle-Less Trailer Suspension?
    The Timbren Heavy-Duty Axle-Less Trailer Suspension - 2,000 lbs # ASR2KHDS01 has a total weight capacity of 2,000 lbs instead of an individual capacity of 2,000 lbs each. For something that will give you greater capacity for your cargo, I recommend the Timbren Heavy-Duty Axle-Less Trailer Suspension - 3,500 lbs # ASR35HDS05. The 3,500 lbs weight capacity of this system will be what allows you to move the cargo you plan to haul. I've added a link to a video review of this product for...
    view full answer...
  • 3,500 lb Timbren Axle-Less Suspension With Lift & Compatible Hub/Drum & Brakes
    We do have an option for a 3,500 lb Timbren Axle-Less system with lift which is compatible with hubs that have a 5 on 4-1/2" bolt pattern, though the 3,500 lb Timbren Heavy-Duty Axle-Less Trailer Suspension - 2" Lift Spindle # TASR35HDS07 does does not. So what you could use instead is a system that has a little more lift, of 4 inches. The parts that will work, along with the electric brakes, are the following: - Timbren Axle-Less Trailer Suspension System - 4" Lift Spindle - 3,500 lbs...
    view full answer...
  • Trailer Build With Timbren & Dexter Components
    I went to our warehouse and pulled these Timbren Heavy-Duty Axle-Less Trailer Suspension - 4" Lift Spindle - Regular Tires - 3,500 lbs # ASR35HDS05 to measure the spindle for the right hub and drum. You have a couple of options to choose from but the 3,500lb Dexter hub and drum will not work with the Timbren because the heavy duty spindles of the Timbren will not fit the bearings of the Dexter hub. The Timbrens are meant for larger hubs and larger wheels. There aren't any hubs with...
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  • Timbren Axle-Less Suspension Kits with 4-Inches of Lift
    The Timbren axle-less suspension kits are offered in either 4-on-4 or 5-on-4-1/2 bolt patterns; none is available with a 8-on-6-1/2 pattern idler hubs. All such kits are shown on the linked page. Several of these 3500-lb kits, parts # ASR3500S06, # ASR35HDS05 and # ASR35HDS02, offer the 4-inches of lift you want and come without hubs. You can use an idler hub or a hub/drum that takes the same inner and outer bearings.
    view full answer...
  • Lifted Axle Setup for Trailer with 3,000 lb GVWR
    The Timbren Axle Less kit part # ASR35HDS05 would be your best option as it has a 4 inch lift built into it and has a 3,500 lb capacity. Then for idler hubs the part # 8-213-5UC1-EZ would be a great option which fit this spindle and also have a 6 on 5-1/2 inch bolt pattern.
    view full answer...
  • Timbren Axle Less Kit for Trailer that Weighs 3,045 lbs
    Since your trailer weighs 3,045 lbs when loaded the 3,500 lb Timbren Axle Less kit part # ASR35HDS05 would be perfect unless you though you were going to eventually loaded down beyond 3,500 lbs. Then you'd want the # TASR5200S03 which has the higher 5,200 lb capacity. If you end up with too high of a capacity your ride quality might be a bit rougher.
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  • Hubs for Timbren Axle-Less Trailer Suspension ASR35HDS05
    We do have hubs you can use with the 3,500 lb Timbren axle-less system, with the correct set up being the following: - Timbren Axle-Less Trailer Suspension System - 4" Lift Spindle - 3,500 lbs # ASR35HDS05 - Dexter Trailer Hub and Drum Assembly # 8-201-5UC3-EZ This hub comes with the bearings, races, and seal so you won't have to purchase anything else. I have added some links below to video reviews for you to check out as well if you'd like to take a look.
    view full answer...
  • 3,500 lb Timbren Axle-Less With 4 Inch Lift & Correct Brakes
    We can get your trailer set up with the correct Timbren Axle-Less system, and the exact one you need is the following: - Timbren Axle-Less Trailer Suspension - 4" Lift Spindle - 3,500 lbs # ASR35HDS05 You will need to go with a hub and drum with electric brakes with this system, the reason being there isn't a hub and rotor with disc brakes that has the compatible bearing and seal combo to go with these Timbrens. Here is the exact hub and drum and electric brakes that will work with this...
    view full answer...
  • Amount of Travel for Timbren Heavy-Duty Axle-Less Trailer Suspension - 4" Lift Spindle
    The deflection or travel of the Timbren Heavy-Duty Axle-Less Trailer Suspension part # ASR35HDS05 is 2-5/8".
    view full answer...
    Image 1 for
  • Which Bearings and Hubs Fit Heavy Duty 3,500 Lb Timbren Axle-Less Trailer Suspension
    The Timbren Axle-Less Trailer Suspension # ASR35HDS05 is the heavy duty model. The heavy duty Timbren uses a spindle that is a size up from the axle capacity, so the inner bearing is the # 25580 and the outer bearing can be the # 14125A or # 15123 which is standard for 5,200-7,000 lb axles. Unfortunately, that means that a 5 on 4-1/2 pattern won't be an option. A hub that fits will either have a 6 on 5-1/2 or 8 on 6-1/2 bolt pattern. You will either need new wheels to match the bolt pattern...
    view full answer...
  • Timbren Axle Less Kit that Can Fit Jeep 5 on 5-1/2 inch Bolt Pattern Hub
    The 3,500 Timbren Axle Less kits like the part # ASR35HDS05 you referenced actually have 6k spindles on them so for hubs you have to go with the higher rated setups which unfortunately don't have any options in the Jeep bolt pattern you need. Could you get by with a lower rated Timbren Axle Less like the part # ASR1THDS03 which is a 2,200 lb axle and has 3,500 lb spindles so the hub you mentioned # 84555UC1-EZ would fit.
    view full answer...
  • What Brakes and Hubs Are Going To Be Used With The Timbren Axle-Less Trailer Suspension # ASR35HDS05
    The Timbren Axle-Less Trailer Suspension # ASR35HDS05 uses a larger spindle so you are going to need hub and brake components for a 5,200lb axle. We have our Standard Brakes # AKEBRK-6 or the Self-Adjusting Brakes # AKEBRK-7-SA which require less maintenance since they will adjust themselves as they wear. You will need 2 of the Hub/Drum Assemblies # AKHD-655-6-EZ-K for the spindle. These will have the 6 on 5-1/2" bolt pattern and works with 14-1/2" to 16-1/2" diameter wheels.
    view full answer...
  • Timbren Axle Less Setup for Trailer with 4 inch Lift and Surge Brake Compatible
    Best option would be the Timbren Axle Less kit part # ASR35HDS05 which has a 3,500 lb capacity and has a 4 inch lift built into it. It has brake flanges on the spindle already too so all you need to do is attach the hydraulic style of assemblies you want as well as install the hub/drums. For a hub you'd need the part # 8-201-9UC3-EZ and for brake assemblies part # AKFBBRK-7R for the right hand side and part # AKFBBRK-7L for the left hand side.
    view full answer...
  • Hubs & Brake Kit Required For Timbren 3,500LB Axle-Less Trailer Suspension For 5 on 5" Bolt Pattern
    The Timbren Heavy-Duty Axle-Less Trailer Suspension # ASR35HDS05 you are looking at increases the spindle size to the larger #42 spindle. This will require a larger Hub Assembly # AKHD-655-6-EZ-K and the smallest bolt pattern offered in that size is a 6 on 5-1/2". If you go this route you will need 2 of the above hubs with the Brake Kit # AKEBRK-7-SA. To go with 5 on 5" hubs you will need to get the Timbren Axle-Less Trailer Suspension System # ASR3500S06 which uses the #84 spindle that...
    view full answer...
  • Availability Of Timbren Heavy Duty Axle-Less Suspension 3500lb For Off-Road Tires
    There sure is! You will need the Timbren Heavy-Duty Axle-Less Trailer Suspension - 4" Lift Spindle - Off-Road Tires - 3,500 lbs # ASR35HDS02 which has the 4" lift, and wide spindles designed for off-road tires that you were looking for. This system is compatible with idler hubs # 8-213-5UC1 or hub and drum assemblies # 8-201-9UC3-EZ with braking assemblies # AKEBRK-7-SA. I included videos of the products mentioned for you to take a look at.
    view full answer...


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Info for this part was:

Employee Lindsey S
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