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When the rear sags under a heavy load or trailer weight, steering and braking can get sketchy. The Timbren Suspension Enhancement System adds up to 8,000 lbs of hollow rubber spring support above the rear axle to keep your vehicle level and stable. It works with your factory suspension to improve handling and safety while hauling gear, towing heavy trailers, or carrying bed loads like campers or salt spreaders.
Empty or lightly loaded, the system stays clear of the axle so your stock suspension can move freely and ride comfortably. As weight is added, the convoluted rubber springs compress in stages—soft at first and firmer as they compact—so bumps are cushioned without bottoming out. This progressive design absorbs road shock and keeps your suspension from taking a beating on rough roads.
Each hollow rubber spring reacts on its own to support side-to-side loads. That independent action cuts down on body roll when you swerve or turn and helps control sway from crosswinds or passing trucks. The steadier handling also means less trailer movement and a smoother ride overall when towing or hauling off-center loads.
No air hoses, compressors, or gauges to mess with—just a clean bolt-on setup using vehicle-specific brackets and included hardware. The system replaces your axle bump stops on the frame with no drilling required. Once installed, it works automatically whenever you add weight, giving you extra stability and leveling power with zero manual adjustments needed.
Videos are provided as a guide only. Refer to manufacturer installation instructions and specs for complete information.
Hello neighbors. Welcome back. I'm Steven here at etrailer.com. Today we're taking a look at this Timbren Suspension Enhancement System. This is for a Severe Service - Rear Axle. So that just simply means it's a very heavy duty suspension system.
Now, always check our Fit Guide at etrailer.com. Go to the top center of our page where it says My Vehicle. It's usually in yellow. And enter your year, make, and model. You may have to enter your truck bed length, cab size, that kind of stuff, and then it'll tell you exactly what these guys here fit or any part that we have fits.
Now I can tell you that basically these fit a, all the way back from 1988 through 2010, different combinations of either the GMC Sierra, the Silverado Classic, New Body, Cabin Chassis, that kind of stuff. But, again, check our Fit Guide, make sure you're getting the right part the first time. Now diving into the Timbren Suspension System. So why would you need this Why would you want this Well, quite frankly, it's gonna improve suspension, your handling, and the safety overall while you're traveling. Now this particular set is ideal for a truck with maybe like a sliding camper or an in-bed salt spreader.
So super heavy load that's gonna be on the bed constant or for a long period of time. Now what these do is they provide additional support whenever you need it so that you always have a smooth, comfortable ride. So these will allow the leaf spring ample movement, but it also cushions the light loads. And then, at the same time, this rubber and everything becomes more rigid as more weight is added. So this whole Aeon bounce stopper here, as we call it, or a hollow rubber spring, and you can see it on the bottom, it's hollow, this will compress, and again, the more weight, it's gonna compress a little more and just keeps that constant smooth ride for you.
Now, again, as I mentioned, they're great for suspension. They also do actually increase stability as well. They do provide a very great performance when you're hauling, again, those heavy loads. So they help reduce sag. They do work independently, side to side, and they're also gonna help compensate for maybe like those off-center loads, again, such as like an in-bed camper where maybe one side's got all your kitchen stuff or whatnot. It's a little heavier maybe. And the other side, not so much. Now I'm gonna zoom in here so you can get a better picture while I'm still talking about 'em, but, again, they will reduce body roll as well. So when you're swerving or turning corners, that kind of stuff, they will act as shock absorbers and then take a lot of the bumps, rough roads, and the cornering. Now these technically will extend the life of your vehicle's factory suspension because, again, it's helping them. It's not putting as much strain on 'em and that kind of stuff. Now I've got these loosely put together. You can kind of see they're a little offset from center. That's because they're gonna be mounted right up smack dab to the side of the frame. You're gonna get two Aeon rubber springs. So, again, it's hollow down there. It's got the bolt, again, loosely fitted here just for demonstration purposes. And these, again, are vehicle specific, and you get all the hardware for this. And you can see the hardware before me. You may not need all the hardware on one vehicle. Again, check the included instructions. Make sure you're following those instructions to make sure you get 'em installed correctly the first time. Now these, what they will do is they will replace your current axle bump stop that you already have on your frame of your vehicle. You don't have to worry about drilling because this is just going into the same place as the other one. And as far as mounting the brackets, see I told you it was loosely put together, as far as mounting the brackets, the holes here are already here. Again, they mount up to the frame where there's already holes in the frame. And then you'll just simply use the included hardware to install that. Well, since I got it apart, so you can see the different pieces here. There's a thin puck there. Again, you may or may not need that one depending on the vehicle. And, again, the Aeon rubber hollow spring, and this particular guy, I put the long bolt in. So, again, depending on your vehicle, that will determine what combination you use here. Now the capacity of these guys is 8,000 pounds. And keep in mind, don't exceed your vehicle's weight carrying capacity. Always, you know, stay at what they recommend from the factory. These also have a nice limited lifetime warranty and a very nice satisfaction guarantee. Folks, that's gonna do it for our look today at this Timbren Suspension Enhancement System. Again, I'm Steven here at etrailer.com. I hope this video's been helpful for you. There's a lot of information I know. Go back and watch it again if you need to. And, as always, check our Fit Guide to make sure you're getting the right parts the first time. Thank you so much.
Customer Satisfaction Score:
94% were satisfied with this product
6% of customers were not satisfied
Ratings & Reviews
Great product,used on 2014 f350 with arctic fox 990,leveled it out,no rear sag
Package arrived and pretty beat up from shipping, everything was there except the hardware. I sent etrailer an email and Joy T. replied back quickly, got hardware in the mail and I installed today. Great service and quick response!
Works very well on my Ram 3500 long box 4x4. Really helped with stability pulling a 2600# tongue weight, 16K Gvw 5th wheel. Super easy install!
Awesome. They work great. I’m glad I chose this path versus airbags.
The reality of how long it took to install was misrepresented. I am 74 years old and my wife and I installed these bump stops in about a 2 hour span including rest time. We actually expected that. The results were as promised and I truly appreciate that.
Quality product, I have owned Timbrens before. They work good. Installation is fairly easy depending on your skill level. Etrailer as always - great!
Do not keep vehicle level. 800 Lb. tongue weight trail still lowers rear of truck approximately 4 inches. 3500 GMC Dually 4x4
My advice is don't be lazy just go with air bags.
They say satisfaction guaranteed defiantly not satisfied and will be less than happy if they charge me a restocking fee on a bad product. I should have known better.
My truck has an added utility body in the bed at all times. Before addinng the Enhancement System I did not feel that I had control of the truck. After adding the system the truck drives much easier and has a "safter" fee.
It would be helpful if the kit contained all the hardware to attach it to the truck. I purchased this to replace a Loadlifter 5000 that was installed 9 years ago. I don’t have the OEM clip and nuts that goes into the frame. It took hours of searching before I finally figured out I could find it on the Ford suspension schematics.
Love my Timbrens. Had airbags and was tired of leaks and the need to adjust air pressure. Easy to install!
They are difficult to seat. Soapy water does nothing to help. I had to spray with silicon,jack up the back of the truck and place 2x4's between the bump stop and the axle,NUMEROUS TIMES.
Once I towed my 5th wheel I noticed the difference. When unloaded, the ride is normal.
The Timbrens arrived and install was a breeze. Look to be of very good quality. I went with the severe duty because my truck is always loaded up with camping supplies, electric bikes tools…. The topper on back along with the slide tray are added weight. I pull a 7k travel Trailer with 650-700 pounds on hitch. The Timbrens are barely touching the axel without the trailer. I really enjoy dealing with etrailer. They answer all your questions and always put the customer first. It’s kind of like your project is their project.
The installation was pretty simple and I’m sure they will work out fine, but I won’t know for sure until the next time I have to take my tractor on the trailer or load up my ATV.
I ran air bags on my previous trucks when pulling my 5th wheel and trailers, but these worked just as well without the expense. I run them on a F350. Great product!!!
It was tough to remove the stock bump stops on a 06 f350 the new timbrens were straight forward easy to install. They are quite expensive for what they are! I won’t be putting the slide in camper back on until spring so I really won’t know how they will perform but I hope they work as advertised.
Really won't know until I put my truck camper on the vehicle. Product looks and feels quality, we'll see about performance. Installation instructions could be a bit more detailed.
Time will tell! Fast and easy install on my 2012 custom flatbed tundra. Hoping this will help when I overload my truck. I have about 900 lbs of extra weight on my truck at all times + Old man Emu heavy duty leaf springs.
I have Timbrens on an F350. We have a heavy truck camper that we use multiple times a year. I've had both these and airbags on multiple rigs over the years and the Timbrens are superior by far especially because they don't leak at the connections, valves or bags or work loose. They also help with the sway.
There is no pump or electrical involved. Airbags have just too many parts and potential points of failure guaranteed to happen away from home on a muddy road. Once Timbres are installed you're done. In this case the less expensive and simpler solution is the better one!
Works well on my F250 6.75 bed with a 1700lb dry Capri Retreat camper. Solved 4" squat without airbags. Eliminated sway in high winds.
Great item
Great delivery time
So far so good! easy install
I now have Timbren springs on 3 different trucks. They are one "solution" for tucks that are heavily loaded occasionally. Honestly, I dont like the handling characteristics of any of these trucks when the rear axle is bearing on the Timbren springs. Im not saying that theyre a bad product, and the company is reputable and easy to work with. I prefer a traditional overload spring or something similar to Stable Load overload spring blocks, which engage the overload springs sooner. I just prefer the way a loaded truck handles when it bears weight on a traditional overload leaf spring as opposed to the Timbren.
Replaced an original set of timbers from 2006. Product is excellent easy to change out
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John V.
2/1/2024
Although compared to the stock suspension, they have a negative effect on the ride quality, but they do work as advertised. This is my 3rd set of Timbrens, each installed on leaf spring trucks, which are often loaded to the GVW. . In my opinion, because of their elemental design, they area better option than air bags, but lack the benefits of correctly outfitting a vehicle with correctly rated heavy duty leafs and overloads . In short, they’re a cheap and durable solution for trucks that are often loaded with their maximum allowable payload