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When your trailer bottoms out on uneven ground, it’s time for more clearance. The Timbren Axle-Less Trailer Suspension uses a built-in 4" lift spindle to raise the deck height and eliminate the low-hanging axle beam. That gives you the extra space you need to clear rocks, ruts, and steep driveways. With the 7-1/2" distance from the spindle center to the bottom of the frame, the trailer tracks higher and avoids scraping plumbing or dragging over obstacles.
Rough roads don’t have to mean rough towing. The heavy-duty AEON hollow rubber jounce springs take the sting out of bumps and jolts, while rebound springs keep the trailer stable and prevent bottoming out. The 1-5/8" suspension travel cushions your load and limits bounce and sway. Whether the trailer is empty or loaded, the independent action of each side keeps things level and smooth.
Trailer sway and tire wear are common with rigid axles, but the built-in camber and toe-in of this system keep your tires running true. Each side operates independently, so what happens on one wheel doesn’t upset the other. The result is a quieter, more controlled ride, even when you’re carving through tight turns or running on washboard roads.
The suspension arms are made from robust, heavy-gauge steel that can handle hard use in off-pavement conditions. A black powder-coat finish resists rust and corrosion from dirt, water, and road salt. This setup bolts directly to your trailer frame and fits any width when supported by a 2" x 2" steel cross tube. It’s a solid, long-lasting upgrade built for real-world abuse.
This pair of suspension units carries a 2,000-lb weight rating and is compatible with 15" or smaller wheels using 33 x 10.5 tires or narrower. The long E-Z Lube spindles make bearing maintenance simple with built-in grease zerks. Each unit includes 4-bolt brake flanges, 1/2" bolt holes, and accepts common bearing sets—Inner L68149/L68111 and Outer L44649/L44610—so you can match it with hubs and brakes that fit your setup.
| A | B | C | D | E | F |
|---|---|---|---|---|---|
| 13" | 13-11/16" | 1" | 5" | 7-1/2" | 4-1/4" |
| G | H | I | J | K | L |
|---|---|---|---|---|---|
| 5-5/8" | 8-1/2" | 4-3/4" | 1-3/4" | 3-3/8" | 3-11/16" |
Alternate Instructions
Ratings & Reviews
Matt N.
2/6/2016
They are GREAT! I put them on a small offroad trailer that has followed me all over some really rough roads in remote Oregon, Washington, and Idaho. They have performed flawlessly, helped the trailer tow extremely well, and were the single best upgrade I did to that trailer. Very much looking forward to another summer of exploring! Massive upgrade to the stock axle leaf spring combo, and I have had the opportunity to show it off to alot of fellow overlanders. I cant speak high enough of them. I also purchased a set of airbags for my vehicle which unfortunately have not held up terribly well. I have had to field repair one once already, and neither holds air terribly well. Truth be told they seem very underdesigned for the job they perform. From my super secret high tech pocket internet window.
Michael
1/15/2016
Ashley, the 4 version doesnt actually give it more travel. Its the same was the standard or the system as far as suspension travel. What the 4 system does it lift the height of the trailer from the ground, depending on what youre doing with the trailer. For an off road trailer I personally would do the 4raise for added ground clearance, just gotta make sure the trailer doesnt get top heavy. The standard system is good for pretty much all uses and the system is for when you need a really low deck height for a lawn mower or go kart for example. I appreciate your review as I am going to be building a small off road campingbug-out trailer to tow behind my lifted FJ cruiser. I havent decided if I am going to go with the standard height or the 4 lift as I am going to be running the same off road tires toyo RT that I have on my FJ on the trailer and I want the trailer to sit around the same height. Did you add brakes to yours? Im planning on either running electric brakes or if available in am going to run surge brakes.
Ashley
1/18/2016
Michael, My trailer was so light even fully loaded that I didnt see the need for brakes and never missed having them.I stand corrected: We did get the 4 lift, but the non-HD instead of the HD because the specs said that it had a bit more travel. and we didnt need the weight capacity. That being said, Im still happy with how this suspension performs. My trailer is on 31s on a stock Cherokee.
Gwendolyn Y.
10/23/2025
Can't wait to hear how the install goes, Christopher! What kind of trailer are you going to install them on?
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Conrad S.
4/1/2015
HI Matt,WHat size wheel did you use and which hub did you get to match?Appreciate the info