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Heavy trailers and bed loads can cause the rear of your truck to squat and the front end to lift. The Timbren Rear Suspension Enhancement System adds 8,600-lb capacity hollow rubber springs above the rear axle to keep your truck level when towing or hauling. By working with your existing suspension, these springs help maintain proper ride height so steering, traction, and braking stay in balance even with serious tongue weight or cargo.


Each Aeon hollow rubber spring compresses progressively as weight increases. Under light loads you get normal ride comfort, and under heavy loads the rubber stiffens to absorb bumps and rough terrain. The springs act as shock absorbers, taking the brunt of potholes and washboard roads while reducing stress on your factory suspension. That means fewer bottom-outs and a smoother, more controlled ride when roads get rough.

When you swerve or make a sharp turn, each Timbren spring works on its own to support that side of the vehicle. This independent action limits body roll and keeps your truck steady through corners or crosswinds. By improving stability at the axle, the system also cuts down on trailer sway so the trailer tracks straighter and recovers faster if it starts to move around behind you.


Unlike air bag systems that need hoses, compressors, or regular adjustments, this setup is completely mechanical. The custom brackets bolt right onto the frame above the axle using existing points—no drilling required. Once installed, the springs automatically engage when weight is added, so there’s nothing to monitor or maintain before each trip. It’s an easy way to add dependable load support without extra plumbing or setup time.
Customer Satisfaction Score:
95% were satisfied with this product
5% of customers were not satisfied
Ratings & Reviews

John
3/11/2019
The bump-stops have been excellent. Absolutely worth the money.

James T.
6/14/2013
Helped make my decision a no brainer....thanks for the pics they sealed the deal.

Ron L.
5/10/2014
Fantastic....The truck drives like a dream! If and when I hit any potholes or bumps, of course you still feel them, but the control is there with no fish tailing. As far as pulling my 5th wheel, it feels like everything is one unit and floats right along!

Mike L.
12/28/2014
thanks Ron. Great information and you helped me with my decision.

John T.
5/9/2015
Very good illustration and explanation. I have a 5th wheel and am experiencing the squat problem. Question: Is the installation strictly a friction fit or do I have to install a bolt with nut?

Tony O.
5/27/2015
For John T. They are a friction fit, installed mine in less than 15 min. Slight harder ride when unloaded, but they work perfectly for carrying the load of the trailer. Highly recommend.

Ram S.
7/7/2017
Still holding strong on my 1500. I have enjoyed the system so much I will be ordering one for my 2017 Ram 2500
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James
5/9/2026
Worked out really well. towed my Camper for the first time since last year, about a week or two ago, and the Timbren Rear Suspension Enhancement System improved my truck, keeping it more level when towing. I am happy with the upgrade just be aware that, as someone else had stated, the ride was rougher than without, but the truck was more level and stable when towing.