Timbren Rear Suspension Enhancement System
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1992 Chevrolet Blazer
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1992 Chevrolet Blazer
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When the bed is packed or the trailer is hooked up, rear-end sag can throw off your handling and braking. The Timbren Rear Suspension Enhancement System adds up to 12,000 lbs of capacity to help level your ride when towing or hauling. The hollow rubber springs mount above the rear axle to provide extra support as weight increases, keeping your suspension balanced and steering steady without overworking the stock leaf springs.
Rough roads and uneven loads can make a truck bounce and bottom out. These Aeon hollow rubber springs compress progressively—soft at first for light loads, then firming up as weight builds. That means a smooth, comfortable ride when empty and solid control when loaded. The rubber design absorbs road shock before it reaches the cab, helping your suspension last longer while cutting down on harsh hits from potholes or washboard surfaces.
Hauling off-center gear or hitting a windy highway can make your truck lean or sway. Each Timbren spring works independently on its side of the vehicle to keep you stable through corners and crosswinds. This independent action reduces body roll when turning and helps control trailer sway so the whole setup stays planted and predictable.
Adding load support doesn’t have to be complicated. The Timbren system bolts to existing frame points using vehicle-specific brackets—no drilling, air hoses, compressors, or gauges needed. Once installed, it automatically engages when weight is added, so there’s nothing to adjust before hitting the road. You get dependable load leveling with less setup time and no maintenance worries.
Videos are provided as a guide only. Refer to manufacturer installation instructions and specs for complete information.
Hello, everybody, this is Jeff at etrailer.com. Today I'm gonna take a look at the Timbren rear suspension enhancement system. Now, this is a custom-fit part. This is designed to fit the 2007 to 2014 Ford F450, F550 Super Duty trucks, and the cab and chassis models. And, on a custom-fit part like this, I do like to recommend for you to go to our website, use the fit guide, put in your year and model vehicle, and it'll show you if this will work for your application. Now, this kit here will improve the suspension, the handling, and the safety on your vehicle.
This will provide additional support as needed, so you'll always have a nice, smooth, comfortable ride. This will allow the leaf spring ample movement while cushioning any light loads, so it does not affect the empty ride of your vehicle, and it'll become more rigid as more weight is added, which will increase stability, provide great performance while hauling heavy loads, even helps reduce vehicles sag. These do work independently side-to-side. This will help compensate for any off-center loads, helps reduce body roll when you're swerving and turning corners, and these will even act as shock absorbers, taking the brunt of bumps and rough roads, helps extend the life of your vehicle's suspension. It will include everything shown here on the table, includes the two Aeon hollow rubber springs, the two spacers that'll go in there, the mounting brackets, when you go to install 'em, just like that, and then the extra mounting bracket for the one side.
And all the hardware you need comes with a nice set of instructions that'll describe how it all goes together. Now, this will replace the axle bump stops on your frame. There's no drilling required. Few specs on this kit: the capacity is 12,000 pounds. Now, these Timbren springs will not increase your vehicle's weight-carrying capacity, so you do want to make sure not to exceed the manufacturer's recommended weight limit.
And this kit is designed to work with a suspension system that is in good working order. But that should do it for the review on this Timbren rear suspension enhancement system.
Customer Satisfaction Score:
90% were satisfied with this product
10% of customers were not satisfied
Ratings & Reviews
Jesse M gave me expert advice and answered all my questions regarding the Timbren rear suspension enhancement system. I ordered the Timbrens and it took me a little over half an hour to install myself. I absolutely love the way the Timbrens leveled my sagging truck and greatly improved the stability of my ride. I carry a 2003 Northstar tc1000 pop-up camper on my 8ft bed. I highly recommend the Timbren rear suspension enhancement system. I attached a before and after photo.
Feels like it was a real help on the suspension but need about a year to get the full opinion on different roads.
Received the Timbren SES kit in today's mail around 11:30AM, already installed on my 2024 F-150 pickup's rear differential before 3:00PM same day. Like always etrailer's fast delivery time and product info with installation video on your website are very helpful. 1st photo OEM bump-stop, 2nd photo OEM bump-stop removed, 3rd & 4th photo Timbren SES kit installed.
Accolade XT 35L - Timbren SES (TFRSDE - 12k support) loaded in the sweet spot.
These Timbrens should be used on F600 and F550 models. Do NOT use the spacers that come in the box. Just install the Timbrens without the spacers and you are good to go. When FULLY loaded (full gas/water and gear), the Timbrens should compress about 1/2”, which seems to be the sweet spot. The end results are as follows:
1. Better bump absorption and much better rebound. The inside chatter is more of a low sounding rumble and the suspension rebound is really quick.
2. Much better sway control and overall stability.
3. The drive feels more balanced front to rear. The rear drop was reduced by 1”. I think that allows the leaf springs and shocks to work in a more neutral position.
These are worth every penny and are a cheap “set it and forget it”way to improve your ride quality!
Added these to my F250 Super Duty. I carry a golf cart on a Diamond back bed cover. Can be a little top heavy. Perfect addition to my suspension- greatly reduced the sway.
Easy to install using basic hand tools, and stopped the "sag" when I hook up my Casita travel trailer
Helps prevent about 1/2" of sag with my 175lb-tongue weight trailer and easy to install.
Great product. The ride and body roll at the rear axle are notceably improved (1989 Ford E350 Class C RV , 27 ft). I give it 4 stars because the installation was slightly complicated due to the rear brake lines needing to be slightly bent to provide clearance for the U bolts supplied in the kit. Great product and wish it came in a 5000 lb version.
2,000 miles in on a trip from the east coast to the Canadian Rockies these work great while loaded and towing. Close to zero bounce while towing, I love them. Unloaded, however, the ride in my 2026 Tundra has gone south. There is a noticeable, abrupt stop of the units hitting the axle when going over any kind of bump. When I get home and back to regular driving, I may just take them off, its that bad.
I've had these on our tow rig for a year now and I added buy them again today if I needed them.these have worked much better than airbags for our coil spring rear suspension to handle the tongue weight of our trailer. The SUV sits level when the trailer is on and it handles bumps and sway better than the airbags did providing much more comfort to us in the vehicle. Unloaded, we don't really notice they are there, unless, we have all the kids and some friends loaded up and you will fell them work when going over bumps.i do all my maintenance on the vehicle's and inspect these regularly and I cant see any wear so far even though we've gone on 6 trips with our trailer with about 5000 miles doing so.
I cant say these are the best for every truck or SUV, but for ours it is the best and I definitely would recommend to others.
Order came fast and right. E-Trailer gets it the first time !!
Installed fit perfect
Well they are exactly what I thought it would be. Hard for me to say it's what I needed yet.
I installed them on a homemade trailer from a salvaged 2001 base model tacoma. Once I get finished building it out and have some weight in it I'll have a better idea. But from what I've seen so far on a couple test drives they should come into effect when needed.
For reference I building an Tacoma based trailer with an ARE Contractor topper with a Naturnest roof top tent on the very top. So to counter and sway these should be very helpful. At least I hope so. I'm not an engineer but I did stay at an Holliday Inn once.
The Timbren SES is a simple solution for rear squat when towing. When hitched to my 30' Airstream Globetrotter (8800 GVWR) with a tongue weight around 1200 lbs, my Silverado 2500HD had a bit more squat than is ideal. I shopped airbags but didn't want to spend ~$2K for the set up and didn't want the hassle of installation and forever chasing air leaks. The Timbren SES literally installs on the Silverado in about 15 minutes. So simple. No bags, no compressor, no wiring, no air lines, no leaks. And WAY less expensive to boot. Just returned form a 600+ mile trip and it towed flawlessly.
A very simple and straightforward installation once you get the oem bumper stops off (had a shop do that)
Timbren worked with me as I had a non OEM frame height (vehicle was lower than stock) to recommend the proper kit. Highly recommend contacting timbren if you are unsure of the proper kit to use. Ride is more stable. It does feel stiffer and less bouncy but am looking forward to seeing how it performs with my truck camper. Truck is a 1998 dodge ram 2500. Brake line over left side of axle needed to be secured to prevent damage.
The Timbren overload spring/bumper was east to install and did what it was supposed to do when I hitched up a camp trailer. These did not negatively affect the ride by any means and I don't have to worry about the troubles with air bags.
Stiffens and corrects kneel in rear end of 2023 Chevy Silverado 1500. You will notice a stiffening of the rear end suspension while unloaded, but it’s a fair trade off to prevent sagging and porpoising while towing. I found it easier to pull the rear wheels and work from the side than underneath the vehicle while installing.
The timbres bump stop is exactly the right height to meet the axel when the trailer is connected with all its weight onto the hitch. I have an Andersen weight distribution hitch and it levels out perfectly. The day picture is with the coach (Winn 2100bh) with factory equipment. The night picture is after the timbres are in place. Looks good.
It has been almost a year since I installed Timbren Suspension Enhancement Systems (DVF350 and DVR350R) on the front and rear of my 2003 Dodge RAM Van 3500. These bumpers replaced the OEM bump stops that were on my van. I like the Timbren bumpers much better than the OEM bump stops because they provide a progressively cushioned response for suspension compression when traveling over significant humps like speed bumps in a parking lot, or curb ramps into driveways. I did not like the abrupt stop the OEM bump stops provided when traveling over the same objects. I installed the Timbren rear bumpers first, and after a few months of use, I decided to add them to the front. In both cases, the front and rear Timbren bumpers were easy to install once the OEM bump stops were removed. Installation required reuse of the factory hardware. On my van, the Timbren bumpers are not always engaged. Under normal load and travel conditions the bumpers are relaxed and about 1/2” away from the suspension landing points. However, their presence is much appreciated and very noticeable when the van is carrying heavy loads or handling significant humps.
2022 F250 Super Duty. Super easy to install. I have about 3/4" gap between the spring and the plate. Time will tell how they impact the ride quality and how much sag they mitigate with my 5th wheel hooked up.
Great upgrade when pulling our 6500lb travel trailer. Helps with sag and control on the road on our Ram 1500. Change the stock shocks and if you choose, upgrade your stock springs, and you'll get the most out of your half ton.
Absolutely Pleased with the TIMBRENS. They were easy to install, and took less than an hour to install both. I noticed a slight stiffness in the ride as the rear bounced over a bad roadway. Towing is great, with a nice level and smooth ride. I am glad that I did not order the heavier duty Timbrens, than what was recomended for my truck. I believe the ride would have been too stiff. If you look at the photos showing the timbrens, the truck is still lifted in the rear, so what you see is a big gap between the rubber, and the steal plate. When the truck is lowered, there's 1" of space as it should be. BTW, I have been purchasing from etrailer for years now, and I have to say that I have never had any issues with any orders. They are my go to folks for all of my vehicle suppension stuff and trailer stuff. You can't go wrong with buying from them.
Easy install took about 20 minutes on my 2017 Ram 3500 SRW. Had about 1/2 inch clearance as recommended. Loaded up my 5th wheel (2350 hitch weight) and about 200 lbs of gear in the bed. Just got back from a 800 mile camping trip through mountains of TN. You can really feel the difference around those sharp corners and uneven surfaces. The truck felt firm and controlled not hard and jarring as some have mentioned. Going over those overpasses with the wonderfully smooth (Not) joists was greatly improved. The truck would squat and rebound again, with a firm controlled response. Driving without a load felt the same as before without them. I would highly recommend these! Ordering from etrailer continues to be my go to option!
Quick shipping, easy to install, took a lot of the body roll out, put a little more weight towards the front axle. If they fall off I'd buy two more.
Extremely easy to install on my Chassis Frame F550. No airlines to run or need for a compressor. The instructions could be a little bit better. Note: assemble the entire assembly prior to bolting "Part number 4" to the frame of your truck. The other thing that you need to be aware of is that there's a plate that mounts to your axel to protect your brake line. There's a good chance that you'll need to bend this brake line a bit to make room for the protection plate.
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