Timbren Rear Suspension Enhancement System
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2005 Nissan Armada
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2005 Nissan Armada
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When your rear end starts to sag under a heavy trailer or bed load, these hollow rubber springs provide up to 6,500 lbs of support to keep things level. The Timbren Rear Suspension Enhancement System sits above the rear axle and works with your factory suspension to stabilize handling and braking under load. It keeps the truck from squatting and helps maintain steering control and proper headlight aim even with serious weight on the back.
Bumps, ruts, and rough pavement don’t have to beat up your suspension. The Aeon hollow rubber springs compress progressively, soft at first for comfort and then firmer as weight increases. That design cushions light loads, absorbs road shock, and helps prevent bottoming out when things get rough. The rubber construction adds elasticity that gives a smoother, more stable ride when loaded compared to stiffer materials like microcellular urethane.
Each spring works independently so one side can react without affecting the other. That independent action keeps the vehicle balanced through sharp turns or uneven loads and helps cut down body roll when swerving or cornering. With better roll stability, less sway, and a more planted feel, your vehicle stays composed even when a trailer starts to move around in crosswinds or when hitting uneven ground.
There’s no need for compressors, air hoses, or manual adjustments. This system replaces the factory bump stops and bolts directly onto existing frame rails—no drilling required. The included custom-fit brackets and hardware make installation straightforward for anyone comfortable with basic tools. Once installed, the springs require no maintenance and automatically provide the right amount of support as your load changes.
Customer Satisfaction Score:
93% were satisfied with this product
7% of customers were not satisfied
Ratings & Reviews
Kate F.
5/6/2026
Glad to hear the Timbren systems worked out so well for your RAM Van Mitchell! It’s great that you noticed the smoother, more progressive response compared to the factory bump stops, especially under load. Thanks for sharing your experience with both the front and rear installs, that’s really helpful for others considering the upgrade. What kind of loads are you usually hauling with your van?
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?
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
Lazer S.
6/16/2026
They definitely look like they are helping, Orlando! How are they when you aren't towing? We hear a lot of people say they can be pretty harsh when unloaded.
Kate F.
7/13/2026
Bud, thank you so much for taking the time to leave a review! I'm glad to hear the suspension upgrade helped reduce the sagging and porpoising while towing. I also really appreciate you including the installation pictures and sharing your tip about removing the rear wheels. I'm sure that will help the next person tackling the install. Thanks again for choosing etrailer!
Robin H.
9/22/2026
Thanks for taking the time to share such a detailed review and all of the pictures! The unloaded ride is a concern we hear fairly often with SES upgrades, so your experience with the 1" gap and rough-road testing will be really helpful to others considering these for their F-250. We appreciate the kind words about Naomi and our team as well. Looking forward to your update once you get some miles on them with the Rockwood!
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Jay S.
8/14/2026
Now that its been a year Im very impressed with them. Theres no ride detriment without the 5th wheel attached and they do a great job of mitigating squat