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When weight in the bed or on the hitch makes your rear suspension sag, steering and braking can feel loose. The Timbren Rear Suspension Enhancement System adds up to 6,000 lbs of support over the rear axle to level your ride and cut down on squat. The hollow rubber springs mount above the axle to pick up the slack when you’re towing or hauling, keeping your truck steady and predictable under load.
Bumpy roads and uneven pavement don’t have to mean a harsh ride. The Aeon hollow rubber springs compress progressively—the folds collapse under light loads for cushion, then stiffen as weight increases. This design absorbs shock and road vibration before it hits the cab, reducing bounce and protecting your suspension from bottoming out on rough terrain.
When a curve or crosswind pushes your load off-center, each Timbren spring works independently to stabilize that side of the truck. This independent action cuts down body roll when turning and helps keep off-center loads under control. The result is a planted feel through corners and less sway from trailers or heavy cargo.
Adding real suspension support doesn’t need compressors or hoses. The Timbren system bolts in place of factory bump stops using vehicle-specific brackets and hardware—no drilling required. Once installed, there’s nothing to maintain or adjust. It’s a one-time setup that works automatically whenever you add weight to the rear of your truck.
Customer Satisfaction Score:
94% were satisfied with this product
6% of customers were not satisfied
Ratings & Reviews
Don
5/21/2026
The TIMBRENs work as stated during when I am pulling anything heavy. However, when the truck is not pulling anything, anyone riding in the rear seat gets a very hard jarring jolt when driving over any roadway repairs, bumps, expansion joints on bridges. I wished that I would have went with the Super Springs, or the Road Active Suspension. I may replace the TIMBRENS later.
Gwendolyn Y.
5/21/2026
Heather A.
5/8/2026
I love to hear that David. I am glad the Timbrens are working out so well for you with the truck camper. That Rogue is pretty fancy, is it a pop up too?
William
7/30/2025
The Timbren system has been working great after a year of use towing, very little rear end sag with 500 pound tongue weight trailer connected.
Steven
5/12/2026
As a follow up to my comments about the Timbren Rear Suspension System, I can only add that I am reminded that it is a great product every time I hook up to my camper.
Lazer S.
2/17/2026
Glad they are still working well for you, John! These definitely give you support when you need it! : ) What kind of travel trailer are you pulling?
Lazer S.
2/18/2026
Victoria H.
3/22/2025
Sounds like these fit your needs perfectly, Mark! Looks like you're ready for an adventure; where to next?
Gwendolyn Y.
11/25/2024
Hey neighbor! I'm happy to hear that even a year later you are still lovin the Timbrens!
Mr. S.
11/25/2025
After using these Timbrens over the past year they have done everything I wanted them to do! The main purpose for installing these was for pulling my travel trailer. These have made life way less stressful with the extra stability they have given my truck, even on days when travel conditions or at there worst! I stand by my original review and would recommend these to anyone that wants to have vehicle stability at a reasonable price. Once installed you don’t have to worry about fooling around with any adjusting they just work. If and when I purchase a new vehicle I will be installing these first thing!
Peter
2/16/2021
Great
Cory
5/22/2019
Still holding up great. Have a friend that went with airbags , and is constantly battling leaks
Frank P.
7/20/2017
After 1 year heavy use, I still strongly recommend the Timbren shock as the perfect solution for a level towing, hauling ride.
Donald R.
11/6/2025
Very easy to install. Definitely took any sag out of my ride. At first I had the spacers in. I didn’t need them in. Took them out without any issues. I’m putting a golf cart in my bed of my truck next year. I confident that they should work just fine.
Mike L.
1/30/2018
I spoke with my Timbren representative, who tells me that its likely the full tank of gas is causing the 14 inch space differential between the driver/passenger Aeon spring and the axle. They do have spacers available that are as small as a half inch, but all that would do in your case is make the other side 1/4 inch closer to the axle. Any load thats capable of compressing the suspension so the springs contact the axle would cause both springs to contact at the same time, so that small differential wouldnt be anything to be concerned about. Let us know if youre interested in the spacer, Timbren will send you one if youre interested.
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Condition: Installed
Notes: There are install marks from previously being test fitted. All hardware is included.
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Brooke M.
5/7/2025
Wow, thank you for sticking with us, Don! That is awesome. I think you made an excellent choice here. Timbrens are tough and the heavy duty are SUPER tough. Glad to hear these were a good fit. Love the photos! Is that your own property?