1. Trailer Leaf Spring Suspension
  2. Timbren
  3. Axle Replacement System
  4. Axles
  5. Universal Fit
  6. 5200 lbs
Timbren Axle-Less Suspension - Spindle Only - Regular Tires - 5200 lbs

Timbren Axle-Less Suspension - Spindle Only - Regular Tires - 5200 lbs

Item # ASR5200S01
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Trailer Leaf Spring Suspension
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Timbren Axle-Less Suspension - Spindle Only - Regular Tires - 5200 lbs Universal Fit ASR5200S01
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Designed for regular tires, the Axle-Less system provides a smooth, quiet, safe ride and can eliminate the need for an axle. Suspension units with brake flanges replace your existing axle and operate independently. Fits any frame width. Lowest Prices for the best trailer leaf spring suspension from Timbren. Timbren Axle-Less Suspension - Spindle Only - Regular Tires - 5200 lbs part number ASR5200S01 can be ordered online at etrailer.com or call 800-298-1624 for expert service.
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  • Reviews (190)
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Timbren Trailer Leaf Spring Suspension - ASR5200S01

  • Axle Replacement System
  • Axles
  • Universal Fit
  • 5200 lbs
  • Spindles Only
  • Timbren

Designed for regular tires, the Axle-Less system provides a smooth, quiet, safe ride and can eliminate the need for an axle. Suspension units with brake flanges replace your existing axle and operate independently. Fits any frame width.


Features:

  • Suspension system provides a safe, smooth, quiet ride for your trailer
    • 2 Separate units replace your existing axle
  • AEON progressive-rate main springs absorb road shock and support trailer's load
    • Deliver a smooth, stable ride, regardless of load size
    • Compress and become stiffer as load increases, boosting spring strength
  • Rebound springs act as return devices to minimize rattle and bottoming out
    • Create constant pressure on the arm, so the suspension is never completely relaxed
  • 2 Independent units can eliminate the need for a thru axle
    • Increase ground clearance
    • Lower deck height for easier loading and unloading
    • Reduce roll during cornering
    • Fit any trailer width
  • Built-in camber and toe-in help your trailer to track straight, reducing wear on the tires
  • Straight, EZ Lube spindles accept either 5,200-lb brake assemblies or idler hubs (sold separately)
    • EZ Lube feature makes it easy to grease bearings without removing the hub
    • Spindles can be removed from units for simple replacement if damaged
  • Brake flanges let you install 5,200-lb rated brakes
  • Heavy-duty steel construction with black powder coat finish resists wear and corrosion
  • Easy to install and align
    • Bolt or weld to your trailer's frame
    • Hubs and bearings sold separately


Specs:

  • Fits: 1-axle and 2-axle trailers that use regular tires
    • Not recommended for triple-axle applications
  • Weight capacity: 5,200 lbs
  • Brake flange configuration: 5 bolt
  • Quantity: 2 suspension units without hubs
  • Spindle/Hub compatibility:
    • Bearings: 25580 inner/14125A outer
    • Races: 25520 inner/14276 outer
    • Seal inner diameter: 2.25"
  • 3-Year limited warranty


Note: The Timbren Axle-Less suspension system may require additional support on your trailer. If your trailer does not have a crossmember above the spot where you want to install the Timbren system, you may need to reinforce the frame. You can accomplish this three ways. First, you can retrofit the trailer with a crossmember. Second, you can build out the trailer frame. Third, you can use 2-inch x 3-inch rectangular steel tubing to connect the 2 Timbren suspensions together using the built-in square hole on each unit.


Ground Clearance

Ride on rubber with Timbren's Axle-Less trailer suspension system. This one-of-a-kind suspension consists of two separate units, each containing rugged steel arms and two strong, hollow rubber springs. Overall, the system safely and effectively absorbs road shock, minimizes trailer bounce and rattle - regardless of load size - and helps to protect your trailer's components and cargo. Built-in camber and toe-in keep your trailer tracking straight to minimize tire wear. Integrated hangers attach to your trailer's frame. And 2-inch x 3-inch holes make it easy to reinforce your trailer's frame by adding 2-inch x 3-inch rectangular steel tubing (if needed).


The Axle-Less independent suspension system replaces your trailer's existing leaf spring suspension and can eliminate the need for an axle. The independent action of the suspension reduces roll when your trailer is cornering and allows you to maximize ground clearance and minimize deck height. Your trailer can have the same side-to-side clearance as your tow vehicle. And the low deck height makes it easy to load cargo from either the rear or the side.


Because you're riding on rubber, your trailer will ride smoothly and comfortably, whether you're navigating rocky terrain or highway asphalt.


Timbren Axle-Less Suspension Parts

Components

  1. The AEON progressive-rate main spring supports the weight of your trailer and cargo and easily absorbs road shock. It is constructed of heavy-duty, hollow rubber.
  2. The rebound spring minimizes trailer bounce, rattle and bottoming out. It keeps the suspension under constant tension and ensures that the main spring compresses and expands in a controlled fashion. And it delivers a smooth, stable ride - regardless of how much cargo is on the trailer.
  3. The trailing arm and integrated hanger attach 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 urethane bushings that never require lubrication.
  5. The EZ lube spindle is simple to grease. If damaged, it can be removed and replaced, saving you both time and money.
  6. The hub is not included with this model.
  7. The built-in square hole accepts standard 2-inch tubing. If there is no crossmember above the suspension, you can easily add support to your trailer's frame by inserting 2-inch steel tubing through the hole on each suspension unit and then bolting the tubing into place.

Timbren Axle-Less Suspension versus Leaf Springs

Leaf Spring Example

The Axle-Less suspension's progressive spring is a definitive upgrade over leaf springs. Although leaf springs deliver a stable ride when supporting a load, a trailer with leaf springs will bounce and rattle when it's empty or supporting a light or off-center load. On the other hand, your trailer can bottom out on bumpy roads if the load is too heavy. The AEON progressive-rate springs of the Axle-Less suspension always deliver the same reliable performance, no matter the load size. As more weight is added to the trailer, the springs compress and become stiffer, offering more support for heavy loads. And because they rebound more slowly than leaf springs, the AEON springs do a better job of absorbing road shock, thereby keeping your trailer from bouncing and rattling when you're carrying a light load. So with this versatile system you will enjoy a smooth ride whether you're towing an empty trailer or a hefty load.


Unlike leaf springs, Timbren's Axle-Less suspension units operate independently of one another. Each spring activates only when needed. This reduces roll and delivers top-notch performance, even when you're hauling off-center loads. When your trailer with leaf springs takes a turn, one side of the suspension compresses and takes on more weight, and the other side becomes looser and bounces. This causes rattle and can make the trailer lean to one side. But when your trailer with the Axle-Less suspension takes a turn, one side compresses and becomes more rigid to absorb the weight, and the other side expands to normal height to help steady the load and minimize bounce and rattle. The load stays better balanced, even if it is off-center.


Timbren Axle-Less Suspension versus Torsion Axles

Torsion Axle Example

Timbren's Axle-Less trailer suspension system is a great alternative to torsion axles. While both systems allow either side of the trailer's suspension to operate independently, only Axle-Less suspensions are actually separate units. Torsion axles still require a bar that spans the bottom of your trailer, whereas Timbren's system can eliminate the need for a thru axle - giving you the same amount of ground clearance from the front of your trailer to the rear. It also allows Axle-Less suspensions to fit any trailer width - unlike torsion axles, which have to be fitted to an exact frame width.


Axle-Less suspensions operate in a smoother, less stressful manner than torsion axles. Torsion axles use a twisting motion, where the bar inside the axle tube rolls against rubber cords or a rubber wall to create compression and resistance. The up-and-down motion of the main spring and the side-to-side motion of the rebound spring in Timbren's Axle-Less suspension work together to provide smooth, consistent compression - with no twisting - that results in a better ride and less stress on the suspension's components.


Installing the Timbren Axle-Less Suspension

Whether you are building a trailer or retrofitting your existing trailer with the Axle-Less system, you must make certain that the trailer's frame is both perfectly square and sturdy enough to support a heavy load without the aid of a thru axle.


Install Option 1

There are three ways to install the Axle-Less suspension. The easiest method, which is recommended if you are replacing axles on your trailer, is to install a piece of 2-inch x 3-inch rectangular tubing (sold separately - available at most weld shops) through the integrated hole in the Axle-Less suspension. Then all you need to do is bolt the suspension to the side of the trailer's frame with three bolts (not included).


Install Option 2

The second option for installation is to fabricate an inboard extension plate that attaches the trailer's frame to the Axle-Less suspension.


Install Option 3

The third method of installation is to bolt the Axle-Less suspension's hanger to the trailer's frame and to an existing crossmember that is in the area where you want to install the suspension.


With both the second and third options, you must use three bolts to attach the suspension to the side of the frame. And you also have to use two or three bolts to attach the suspension to the bottom of the frame extension, or crossmember. Both the second and third methods of installation will eliminate the need for a thru axle and provide the most clearance.


Measuring Diagram

Timbren's Axle-Less suspension units should be installed directly across from one another. Before mounting the units, measure back from the coupler and mark the frame to make sure that the two distance measurements (A and B) are within 1/8 inch of each other. Then you can drill holes through the frame and attach the hangers with Grade-5, half-inch bolts (not included).


Dimensions of the Timbren Axle-Less Suspension

The following diagrams show measurements that were taken with electric drum brakes installed on the Timbren Axle-less suspension system.


Dimensions 1

Dimensions 2

Dimensions 3

Dimensions 4



ASR5200S01 Axleless Trailer Suspension System by Timbren - Straight Spindle - Without Hubs - Regular Tires - 5200 lbs

Installation Details ASR5200S01 Installation instructionsAlternate Instructions ASR5200S01 Installation instructions




Customer Reviews

Timbren Axle-Less Suspension - Spindle Only - Regular Tires - 5200 lbs - ASR5200S01

Average Customer Rating:  4.7 out of 5 stars   (190 Customer Reviews)

Designed for regular tires, the Axle-Less system provides a smooth, quiet, safe ride and can eliminate the need for an axle. Suspension units with brake flanges replace your existing axle and operate independently. Fits any frame width.

- ASR5200S01
by:

Timbren Axle-Less Suspension - Spindle Only - Regular Tires - 5200 lbs Item # ASR5200S01 Looks great on empty trailer, idea is good, bad execution. When loaded tires "splay out" severely, excessive tire wear, obviously too much play in system somewhere.


Comments
Excessive camber which causes wear on the portion of the tire tread closest to the trailer can be caused by a few different things. 1 The axle-less suspension system has a 5200 lb per set capacity, so youll want to be sure this amount is not being exceeded. 2 The surface of the trailer that the suspension member is added to needs to be an integral part of the trailer that should have NO give in it whatsoever. Any flexing of the side member there will throw off the camber of the tires. I have seen what you describe occur when the suspension system has been mounted to tubular steel that made up the edge of the trailer frame. In that instance, some angle iron was added to stiffen things up. 3 Its not required, but a piece of 2x3 inch tube steel of the appropriate length can be used as a beam connecting the two sides, utilizing the existing hole in the axle-less suspension member. This will help stiffen things up. 4 The suspension system should have included some shims that can be used where the spindle attaches to the suspension portion of the assembly. Using these shims can decrease the camber, but only if the points mentioned above are taken care of. Ive checked with Timbren regarding the above, and they concur.
-- Etrailer Expert Mike L - 11/21/2018


- ASR5200S01
by:

Purchased these axle - less suspension sets to build a single axle utility trailer. They arrived in excellent condition and appear well made. Installation instructions are clear and well written. Also ordered hubs, coupler hitch, rims, lights, stake pockets and other heavy items. My order arrived complete, very well packaged and timely in eight boxes. The boxes Etrailer used for packing were heavily made and undamaged in shipping. No missing parts because of the superior way they were packed. I will definitely order from Etrailer again.



- ASR5200S01
by:

A little bit pricey, at first. But in the long run they are cheaper. We used to bend or break an axle every 3 or 4 months. But we have had these a couple of years now with no problems. One thing that is nice is on a tandem axle set up you can get a flat and you just have to take the wheel off and run on 3 or 2 wheels without the hubs hitting the ground.



- ASR5200S01
by:

The products are good quality and durable. Etrailers has good pricing, shipping and an easy transaction. Etrailers provides so many different trailer products, you can't go wrong. Thank you Etrailer.



- ASR5200S01
by:

Used these to replace half torsion axles on drop down ice shack. Hesitant to spend the $$$ but glad I did. Well built, less space and smooth ride. Replaceable spindles a plus.



- ASR5200S01
by:

Work perfectly on my one-off trailer bu ild



- A20RS545
by:

Review from a similar Axle-Less Suspension in Trailer Leaf Spring Suspension


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.


Comments
Really cool work!
-- Etrailer Expert Sierra K - 07/07/2021


- ASR3500S06
by:

Review from a similar Axle-Less Suspension in Trailer Leaf Spring Suspension


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.



- TASR5200S03
by:

Review from a similar Axle-Less Suspension in Trailer Leaf Spring Suspension


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)



- ASR3500S06
by:

Review from a similar Axle-Less Suspension in Trailer Leaf Spring Suspension


A must have suspension if you're building an off-road trailer!


Comments
Its been a year and this suspension is still doing great!
David R - 09/27/2021


- TASR5200S03
by:

Review from a similar Axle-Less Suspension in Trailer Leaf Spring Suspension


This is as close to a bulletproof suspension as they come. We use this suspension on all of our VORSHEER XOC trailers. They have performed flawlessly as an off-road suspension.



- ASR3500S05
by:

Review from a similar Axle-Less Suspension in Trailer Leaf Spring Suspension


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



- ASR3500S05
by:

Review from a similar Axle-Less Suspension in Trailer Leaf Spring 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.



- A35RS545
by:

Review from a similar Axle-Less Suspension in Trailer Leaf Spring Suspension


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.


Comments
Working out just fine.
David J - 09/25/2020


- ASR3500S06
by:

Review from a similar Axle-Less Suspension in Trailer Leaf Spring Suspension


Best suspension you can get for off-road trailers. We use this suspension on all of our VORSHEER XER trailers.



- A12WS545
by:

Review from a similar Axle-Less Suspension in Trailer Leaf Spring Suspension


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!


Comments
I have just a little more to add regarding my purchase: Two sets, of the Timbren Axle-less assemblies, 1200 lb, and 5 wheels. I placed the order via phone, and whoever was on-call that day provided great answers and recommendations regarding the units, wheels and tires. At 31 feet, the trailer originally exhibited amplified porpoising on any bumps or dips in the road. Also bouncing and occasional sideways tipping due to the single axle. It made a lot of noise on my mountain community washboards. I speculated that the Timbren units would solve most, if not all of these problems and they have. Installation on my older 31 ft European ie, metric and no longer manufactured glider trailer was a mere 4.5 hours from removal of the old single axle to setting the trailer back down on its new assemblies. Instructions are complete, precise, useful and helpful. Appreciated. Little to comment on as installation was all straight-forward. I would like to describe the maiden voyage to the airport and back, but there is nothing to tell, other than it towed beautifully proper alignment instructions, and all that I viewed from the rear view mirror looked like a magic carpet ride. It rides over washboards and pot holes like a marathon hurdler, the 4-wheel independent suspension is great. Packaging: the shipping boxes all arrived in good condition, but the cardboard component boxes inside them... not so much. Most were ripped and open due to heavy components lightly surrounded with brown packing paper, just token amounts. Parts: all was accounted for minus a pair of spindle axle washers for one set, easily replaced at the local farm and ranch supply. No squawk, just an fyi. I am very pleased with your product and support, and was happy to leave a 5-star review with photos. The upgraded suspension was also a topic this past weekend at the glider port by those who regularly trailer their ships to various soaring events, some as far as a thousand miles away. My compliments to eTrailers, hope you can use my info,
-- comment by: Kelly F - 11/28/2018



- A4WS440
by:

Review from a similar Axle-Less Suspension in Trailer Leaf Spring 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.


Comments
After a year of off road use, I couldnt be happier. My trailer rides smooth loaded or unloaded. No of that bunny hopp with leaf springs or rigid mount axles. The small rebound control snubber works perfectly! I modified my components for high clearance but the concept is sound, they work well. Great job Timbren!
Doug F - 06/22/2017



- ASR1200S04
by:

Review from a similar Axle-Less Suspension in Trailer Leaf Spring Suspension


The order came in on time and the customer service at etrailer.com (Ashley) and Sean from Tmbren was outstanding. They both were very helpful in my choosing the right product for my needs. The axle less suspension's performance is absolutely superb. It vastly improves ride quality. I am using it on a teardrop camper that often goes on gravel roads and the raddling sound from the leaf axles was horrible. A couple of points to consider before you settle on the axle less suspension: keep in mind that you will lose some hight of the trailer. While you will gain clearance from the lack of the axle, the suspension will make the trailer sit lower than before.i had to lower my hitch by an inch to maintain the trailer leveled. Also it does appear to compress at higher rate than the leaf springs, which makes it softer but easier to reach it's limit. Overall this product is absolutely a must if you are looking to improve the safety and the quality of your towing.



- ASR1THDS01
by:

Review from a similar Axle-Less Suspension in Trailer Leaf Spring Suspension


After a great deal of research, I ultimately chose the Timbren long arm kit to replace the torsion axle under my teardrop trailer. My initial impression is that there is simply no comparison between the two. It now rides better, pulls better and handles better than I could have imagined. The Timbren axle system is incredibly well built and is much more confidence-inspiring. While the spring rate closely matches my trailer weight, the components are much more rugged and robust. The spindles, bearings and brakes are rated at double the capacity of my old axle which gives me great peace of mind. I pull my trailer, both on and off road, anywhere it will fit and the long travel and heavier components are a game-changer for my travels. Installation, while requiring a bit of forethought, was otherwise straightforward and methodical. Documentation available from etrailer and Timbren, is second to none. Instructions were clear and concise with drawings and detail taking the major guesswork out of the equation. Even though, due to the odd frame design of my trailer that required a bit of work to adapt, I ended up making some frame stiffeners, the adaptation was as simple as it could possibly be. I've ordered from etrailer in the past and they were 100% accurate on this order as well. I ordered the Timbren kit without backing plates and hubs due to the requirements of my trailer and etrailer suggested, explained availability and supplied all of the components I needed. They truly a stress-less bunch of folks with an extraordinary website. I'll no doubt turn to them again...



- ASR1200S02
by:

Review from a similar Axle-Less Suspension in Trailer Leaf Spring Suspension


It was a very straight forward install, it goes pretty smooth if you take your time, double check your layout, Make sure of your bolt sizes (length) before going to the store. If you plan the project, don’t rush, its not a race, it goes really good. I spent about 10 hours spread over two days by myself. I am just waiting for tires to arrive. All that said very happy with the product and etrailer. Will recommend for any axel/suspension replacement.



- ASR3500S06
by:

Review from a similar Axle-Less Suspension in Trailer Leaf Spring Suspension


Came late. Not e-trailers fault. Covid-19 and China's fault. They bolted right up on my trailer frame. Really like the way they make my tear drip trailer handle. No sway, no bouncing all over like it use to. Will always put these under any trailer I build from now on. E-trailer keep up the great work.



- A35RD545
by:

Review from a similar Axle-Less Suspension in Trailer Leaf Spring Suspension


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



- A20RS545
by:

Review from a similar Axle-Less Suspension in Trailer Leaf Spring Suspension


This suspension system did EXACTLY what I wanted. I replaced the leaf springs, axle/hubs on my small trailer. The new suspension improved the capacity, lowered the bed 4+inches, improved ground clearance and allowed me to rebalance the trailer all WITHOUT having to have any welding done. Everything needs to be measured very exactly and the alignment technique is fairly cumbersome and takes a bit of time. In the end, I have a quiet, steady, strong, low riding trailer. What more could you ask for



- A20RS545
by:

Review from a similar Axle-Less Suspension in Trailer Leaf Spring Suspension


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.



- ASR3500S06
by:

Review from a similar Axle-Less Suspension in Trailer Leaf Spring Suspension


We use Timbren's ASR3500S06 on all of our XER trailers. We couldn't be happier. It is a well built suspension.


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Ask the Experts about this Timbren Trailer Leaf Spring Suspension

  • Replacing Axles on a 2021 Apex Nano Dual Axle Trailer With a Timbren Silent Ride or Axle-Less System
    A Timbren Axle-Less system or Silent Ride system would definitely upgrade the stock leaf spring set up on any camper or trailer. That being said, there are a couple things to keep in mind when choosing one of these systems.. The Timbren Axle-Less System # ASR5200S01 will replace the axles as well as the leaf springs. This will also give you independent suspension, which will handle nicely when towing, especially over uneven ground. The only caveat with this system, is that it specifically...
    view full answer...
  • Upgrading from a 3,500 Lb to a 5,200 Lb Axle On a Trailer with 80-1/2 Inch Hub Face Length
    The spring center and hub face measurements that you have are more synonymous of a 3,500 lb weight capacity which is why you are having a hard time trying to find an axle with 5,200 lb weight capacity. That said, I do have an option for you in the Timbren Axle-Less Suspension part # ASR5200S01 which has a 5,200 lb weight capacity and you don't need to worry about matching the spring center or hub face measurements of your existing axle. This option also has a unique rebound spring which...
    view full answer...
  • Dimensions of the Timbren Axle-Less Suspension System # ASR5200S01
    We have exactly what you are looking for. Check out the dimensional diagram that I have attached.
    view full answer...
    Image 1 for
  • Should 3,500 lb or 5,200 lb Timbren Axle-Less System be Used for over 3,600 lbs of Loaded Trailer
    Since your axle will ultimately be under the weight of your trailer and it's contents you definitely need to make sure that it is rated for more than what you will be carrying. You need to go with the 5,200 lb weight capacity. For this we have the Straight Spindle # ASR5200S01, 4" Lift Spindle # TASR5200S03, and 4" Drop Spindle # ASR5200S04. This is compatible with the idler hub # 8-213-5UC1-EZ or the hub and drum assembly # 8-201-5UC3-EZ. I recommend going with the hub and drum assembly...
    view full answer...
  • Can Disc Brakes be Installed on Timbren Axle-Less Suspension for 5,200 Pound Axles
    You could install disc brakes on the Timbren Axle-Less Suspension # ASR5200S01. You would use one of the kits from the link I have included to the right. All of these kits have a 6 on 5-1/2 bolt pattern. The kits linked take the same inner bearing but the outer bearing listed for the Timbren system is different than what the description states. The reason for this is that the spindle takes an outer bearing with a 1.25 inch inner diameter. The outer diameter would need to match the hub....
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  • Disc Brakes for Timbren Axle-Less Suspension
    To answer your first question, the Timbren Axle-Less Suspension # ASR5200S01 you referenced is compatible with disc brakes that use a 5-bolt mounting flange, the Kodiak Disc Brake Kit # K2HR526D. This is a hub and rotor kit; you will also need Bearing Kit # BK3-100, which has the correct bearings, races, and grease seal for the hub on this brake kit. In regards to your second question, I took a look at the installation manual for the Timbren # ASR5200S01 and it specifies using 2"...
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  • Recommended Replacement Axles For Tandem Axle Boat Trailer
    As long as the frame itself can handle the additional weight, you would need to upgrade all of the other components under that weight capacity including the coupler. I recommend using the Timbren Axle-Less Suspension - Spindle Only - Regular Tires - 5200 lbs # ASR5200S01. This will allow your to simply remove the existing suspension and axles and add a cross beam or add a piece of 2x3 inch tubing between the axles in the integrated holes. With these spindles, you can use the Trailer...
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  • Replacement Axles Needed for Trailer with Tandem Lippert 3,500 lb Axles
    When you are looking for a replacement axle there are a few measurements that you want to take note of to make sure that you get the correct replacement size. You want to get the same length axle that has the same Hub Face and Spring Center measurements. From the information that you gave me, your current axle has a Hub Face measurement of 86.5 inches and a Spring Center measurement of 68.5 inches. Although we do not have any axles that have these exact measurements I do have a solution...
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  • Can I use the Timbren Axle-Less Suspension on my Boat Trailer
    Yes, the Timbren Axle-Less Suspensions # ASR5200S01 have a black powder coat finish on them that helps them resist wear and corrosion. This finish will help the axles to withstand the saltwater environment.
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  • Replacement Axle Needed for Lippert 5,200 lbs Axle with Serial Number 045-001684271
    I do have a solution for you, however when I spoke with my contact at Lippert they said that your axle is rated for 5,200 lbs and the highest rated standard axles that we have are rated for 3,500 lbs. The alternative solution that we have is the Timbren Axle-Less Suspension # ASR5200S01. This system is rated for 5,200 lbs and can be used as a single axle or you can use 2 for a tandem axle trailer. There are a few great things about the Timbren system. It increases ground clearance since...
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  • Replacement Options for a Lippert 5,200 Lb Axle
    I do have an option for you but we do not carry any 5,200 lb standard axles. Instead, the only thing we can offer you is an axle-less system like the Timbren Axle-Less Suspension System part # ASR5200S01. This system actually uses rubber bumpers to replace the leaf springs and will do a much better job of absorbing road shock and support the trailer's load than the traditional leaf springs you have now. It comes with a 5 bolt brake mounting flange and works with hubs that use a 25580 inner/LM67048...
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  • Recommeded Axle-Less Trailer System For 8500 lbs Capacity
    For an 8,500 lb capacity trailer, you will actually get a 10,400 lb capacity because of where the axle weights fall. For this I recommend 2 of the the Timbren Axle-Less Suspension - Spindle Only - Regular Tires - 5200 lbs, # ASR5200S01. For the hub and drum assembly, I recommend the Trailer Hub and Drum Assembly - 5,200-lb - 7,000-lb Axles - 8 on 6-1/2 - E-Z Lube, # 42866UC3-EZ. You will also need the brake assemblies of Electric Trailer Brake Assembly - Self-Adjusting - 12" - Left Hand...
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  • Can I Replace a Torsion Axle on a Tandem Axle Trailer with the Timbren Axle-Less Suspension System
    You can add the Timbren Axle-Less Suspension System, # ASR5200S01, to your trailer in combination with one of your current torsion axles, but there are two important factors to consider before proceeding. You will want to consider the distance from the center of the spindle to the trailer frame and the amount of deflection. For example, the Timbren Axle-Less Suspension System - 5,200 lbs, # ASR5200S01, will put the center of the spindle 3-9/16 inches below the bottom of the frame...
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  • Parts Needed to Upgrade Trailer Axles and Suspension to 5,200 lbs
    If you are wanting to replace your axles with traditional axles then the first step would be to find what your Hub Face (A) and Spring Center (B) measurements will need to be (see attached picture). From there you will need to mock up your trailer to determine what size you need of the following items: 4 - Double-eye springs 2 - Front hangers 2 - Center hangers 2 - Rear hangers 2 - Equalizers 8 - Shackle straps 14 - Shackle bolts 4 - Spring seats (if needed) 4 - U-bolt sets (8...
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  • Where to Place Axles on Triple Axle Trailer Getting Built
    In order to calculate where the axles would go on your trailer, there are several things that need to be taken into consideration. You will have to mock up the trailer with the suspension and axles to get the weights needed to determine where the axles need to be positioned. I have attached a photo that shows you the formulas needed to determine the correct position of the axles. Basically you want to start with the center axle being 60 percent back from the coupler with 40 percent of...
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  • Will Replacing a Trailer Axle to a higher Capacity Axle Increase the Trailer Capacity
    A trailer axle is the most important factor in determining the trailer capacity but there can be other factors such as the suspension components, wheels and tires, and even the trailer frame itself. You would probably need to beef up the frame if you are adding a second axle or axle-less suspension system or replacing the axle with an axle-less system such as # ASR5200S01. And you would also need wheels and tires to match the higher capacity. You would need to use hub # 8-213-5UC1-EZ...
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  • Can Timbren Axle-Less Suspension be Used on a Triple Axle Trailer
    I spoke with the engineers over at Timbren. The reason that they do not recommend the axle-less suspension systems, such as # ASR5200S01, for triple axle applications is because there is no equalization between what would be the axles of the trailer. Without that a trailer that is not fully level would put to much stress and/or weight on the other sets. The engineer said that they have done it before and it can be done but unless the trailer is always fully level, when loaded or not,...
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  • Replacement Trailer Axle with 65-1/2 Inch Spring Center Measurement
    I do have an option for you but we currently do not have a standard trailer axle with a distance of 65-1/2" from the center of each spring seat. Instead, I recommend taking a look at the Timbren Axle-Less Trailer Suspension System part # ASR5200S01. This system will actually replace the axle and leaf sprigs with a set of rubber aeon springs that will do a much better job of absorbing road shock and support the trailer's load. This system has a 5,200 lb capacity but higher capacities are...
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  • Timbren Axle Less and Wheel/Tire Upgrade for 1996 Aero Lite Travel Trailer
    Timbren Axle Less systems like the # A35RS545E will do a somewhat better job in off-road scenarios but the rest of the trailer suspension components are not rated for off-road use so you'll most likely continue wearing out components quicker than a setup used strictly on the highway. The # A35RS545E comes with brake hubs and assemblies already so you'd just need tires and wheels like the bias ply setup # AM3S560. Bias ply tires tend to do better in off-road scenarios as they have more flex...
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  • What would I Need to Upgrade from 3,500 lbs Tandem Axles to 5,000 lbs Tandem Axles
    We carry the Timbren Axle-Less System rated at 5,200 lbs part # ASR5200S01. The axle-less system mounts to your trailer frame and takes the place of your old axle and springs.# ASR5200S01 is a straight spindle design. Timbren also offers these axles with a 4 inch drop spindle part # ASR5200S04. The Timbren Axle-Less can be mount tandem to repalce your tandem axles. There is no need to install leaf springs, because the Timbren axles have built-in spring system on each axle. However,...
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  • Axle Rating for Timbren Axle Less System Explained
    The weight capacity for the Timbren Axle-Less systems like part # ASR5200S01 is per axle. So if you used this on a single axle trailer you would have the axle capacity of 5,200 lbs.
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  • 5,200 lb Trailer Axle Recommendation
    The only axles we offer that have a high enough weight capacity would be the Timbren setup like part # ASR5200S01. This is actually an "axle-less" system that attaches to the trailer frame and provides an axle setup that is somewhat similar to a torsion setup. If you are looking for more of a standard axle you would need to find a local trailer shop who can custom order you in what you would need. For hub drums you would need the part # 8-201-5UC3-EZ and the brake assemblies # AKEBRK-7R-SA...
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  • Upgrading Axle and Braking System for a 1956 Airstream Safari Trailer
    We do have the means to help get your 1956 Airstream Camper up to snuff but the axle you have on it currently is a very old design that will need to be replaced in order to use a newer braking system. Normally all of the info you gave me indicates the the axle is in the 5.2K - 7K range but you'll need to look on the tag at the front of the trailer or tag in the middle of the axle to determine this, especially since this is such an old trailer. To determine the correct replacement axle...
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  • Timbren Axle Less System Setup for 6 on 5-1/2 inch Bolt Pattern
    The lug pattern of 6 on 139.7 in inches is 6 on 5-1/2 inches which is a very standard bolt pattern for trailer wheels. Which for a Timbren axle-less kit that will fit a hub with that bolt pattern you would want the part # ASR5200S01 which has a 5,200 lb capacity and then the hubs part # 8-213-5UC1-EZ.
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  • Axle Recommendation for Trailer Carrying 9,000 Lbs
    Since you mention that your trailer will max out 9,000 pounds, which I assume includes the weight of the trailer frame and all cargo, I recommend going with the Timbren Axle-Less Suspension, # ASR5200S01. I spoke with my shop manager regarding whether he felt using the 5,200 pound axles would be overkill. He strongly recommends going with an axle that has a higher capacity than the amount of weight that you plan to carry and feels that the 5,200 capacity axles would be a good choice....
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  • What Causes Irregular Inside Tire Wear
    If the brakes are dragging on one side of the trailer then that could cause the tire to wear in certain spots. However, if the wear is only on the inside then that points to either the trailer being overloaded or the spindle is bent. I recommend checking the axle capacity and verifying that the weight of the trailer and cargo do not exceed this. If you do tend to find yourself overloading the axles then it may be time for an upgrade. For this, I recommend taking a look at the Timbren...
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  • Can Timbren Axle-less Suspension be Added to a Trailer to Increase its Capacity
    Technically, no, adding a Timbren axle-less system like # ASR5200S01 would not increase the trailer capacity. The capacity, which is mainly set by the axles, also is determined by several other factors including tires, wheels, suspension components, and the actual construction of the frame. Adding the system would provide more support but you would likely have to adjust the location of the existing axle to get the right spacing between it and the axle-less system and measurements from...
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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...
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