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When the rear sags from a heavy trailer or bed load, steering and braking can feel uneasy. The Timbren Rear Suspension Enhancement System adds up to 5,600 lbs of extra rear support to keep the vehicle level and stable. The hollow rubber springs mount above the axle and stiffen progressively as weight increases, working with your factory suspension to eliminate squat and restore confident control when towing or hauling.
Bumpy roads and uneven pavement can beat up your suspension over time. These Aeon hollow rubber springs act as built-in shock absorbers, cushioning bumps and rough terrain while reducing wear on your factory components. They take the brunt of road shock so you get a smoother, more stable ride even with gear or cargo in back.
When crosswinds push or a curve leans you over, each spring reacts only when it’s needed. The independent driver- and passenger-side support helps reduce body roll and keeps handling predictable during swerves or uneven loads. This means better control on winding roads and less side-to-side rock when a gust hits or a trailer moves behind you.
Getting reliable load support shouldn’t require a shop visit. The Timbren system bolts directly to vehicle-specific brackets above the rear axle with no drilling required. Once installed, there are no airlines, compressors, or adjustments to manage—just consistent support that automatically engages when weight is added and backs off when unloaded for normal ride comfort.
Customer Satisfaction Score:
98% were satisfied with this product
2% of customers were not satisfied
Ratings & Reviews
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.
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.
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.
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.
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They do work well for helping to control body tilt side to side on our Motorhome. About 2 hours to install all four myself.
They are great. The leveling rams don’t drag when going over church holes or pulling in or out of parking lots. Vehicles still rides good.
Seems to have helped tremendously! Well pleased with the easy installation l.
Great service and easy installation. Replaced bump stops in 2006 Fleetwood Tioga MH. Noticeable improvement in handling on a test drive. See photo for old/new comparison.
Mike L.
4/2/2026
Thanks for the photo, Sid. Quite a bit of difference there!!
Feels like it was a real help on the suspension but need about a year to get the full opinion on different roads.
James D.
7/24/2026
We're glad to hear the Timbren suspension system is already making a difference. We'd love to hear how it performs over time. What are you using your vehicle for most often; towing, hauling, or everyday driving? Thanks for your review and we appreciate you choosing etrailer!
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Vernon
7/27/2024
Just like expected. Great