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Dragging plumbing or bumping the frame on steep drives gets old fast. This Timbren Axle-Less Trailer Suspension raises the deck with a built-in 4" lift spindle so the bottom of the frame sits 7-5/16" above the spindle center. That extra space makes it easier to clear ruts, dips, and rough terrain without scraping. The design also eliminates the thru-axle completely, giving the trailer its full ground clearance from rail to rail.
Leaf springs can bounce and rattle when empty or bottom out under load. The AEON heavy-duty rubber jounce springs in this setup absorb road shock and carry the trailer’s weight, while rebound springs keep body roll and sway in check. The suspension travels 2-3/4", cushioning bumps so your cargo rides steady and the trailer tracks straight whether it’s full or empty.
Each side works on its own, so what happens to one wheel doesn’t upset the other. The control arm and trailing arm pivot on strong polyurethane bushings that never need grease. Built-in camber and toe-in keep the tires wearing evenly, and the E-Z Lube spindles make bearing maintenance simple with their built-in grease zerks. It all adds up to a smoother, more predictable tow.
The pair of suspension units bolts directly to the trailer frame and together replace one 5,200-lb axle. Each side includes a 5-bolt brake flange with 5/8" mounting holes and a built-in opening for a 2" x 3" cross-tube if extra support is needed. Heavy steel construction and a black powder-coat finish keep the setup solid and corrosion-resistant for long-term use on single- or tandem-axle trailers.
The spindles accept standard bearings (inner 25580, outer 14125A or 15123) and work with wheel diameters up to 16". Compatible hub and brake setups include 12" hub-and-drum assemblies such as part #8-201-5UC3-EZ with electric or hydraulic brakes. Rated at 5,200 lbs for the pair and backed by a 3-year limited warranty, the Timbren Axle-Less Suspension makes a clean, strong upgrade that replaces leaf springs, shackles, and axle tubes with one smooth-riding system.
Alternate Instructions
Ratings & Reviews
Customer service is amazing! Thanks to all of the team at etrailer.
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.
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 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.
Best axle system for overland trailers and their travels, great independence system for those 1-6 trail ratings, simple to work on , easy bolt on system. I would recommend to grease after each trip . The standard Duty -4" Drop- 4Bolt Flange- 3500 lbs give me about 21" clearance with 35" x 12.5 tires
havn't got it installed yet but looks like a great product
Arrived in good shape
Just make sure you got some steel to weld the extension bracket on opposite side. Need 220 for thickness.
Great my order very quickly and in very good shape. I will send you pictures when the Trimbren axle less system is installed. More info later. Thanks to the etrailer Team.
I installed these on my single axle travel trailer to replace the axle and leaf springs. Weight savings was a wash with the required steel tube for added stability. I installed on an I-Beam using aluminum plate as a spacer. It took my friend and I 3 days to install everything. The hardest part was rerouting my black pipe propane line. I also had to install it just back of center due to a steel cross beam being in the way of the middle bolt hole. I replaced the brakes and hubs as well as the wheels to match the new hubs.
Overall we've been super happy with this upgrade. The trailer rides a lot smoother. I'm not finding random screws on the floor after a long bump ride.
We decided to do this after our leaf spring broke 2 times, 12k miles between. We were done dealing with a subpar suspension. I probably would not recommend doing this if your leaf springs are working for you. We put a lot of miles on our trailer. We aren't weekend campers.
A must have suspension if you're building a heavier off-road trailer!
I put these on an off-road trailer build. They have been fantastic! I've done many miles and they held up great. Highly recommend.
We use Timbren's ASR5200S03 on all of our XOC and XOC-R trailers. These suspension are well built and have always performed well for us.
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.
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)
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.
Jake
8/29/2024
15,000 miles later and zero issues. Very satisfied.
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Elizabeth
11/18/2022
1 year later still working great! Very happy with the performance. We have driven at least 20k miles with these springs and have not had a single issue. I also am happy I upgraded weight limits on everything.