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When the bed is full or the trailer tongue drops your rear end, these severe-service rubber springs step in. Sitting above the axle, they add up to 7,000 lbs of support to keep your ride level so steering, braking, and traction stay where they should. The progressive rubber design gets stiffer as weight increases, so light loads stay smooth while heavy ones stay controlled.
Rough pavement and uneven work sites can beat up factory suspension. These Aeon hollow rubber springs absorb road shock and cushion impacts so you feel fewer jolts through the cab. Acting as a buffer between frame and axle, they help prevent bottoming out on bumps and extend the life of your leaf springs and other suspension parts.
Each spring works on its own to support the driver or passenger side as needed. That independence cuts down body roll when you swerve or take a sharp turn and helps balance off-center loads like campers or tools on one side. The result is a more planted feel that keeps both tires gripping evenly through corners and during emergency maneuvers.
Unlike air bag systems with hoses or gauges, these replace your factory bump stops using custom-fit brackets that bolt directly to the frame rails—no drilling required. The setup sits about an inch above the axle so your stock suspension handles normal driving, then the Timbrens engage automatically under load. It’s a straightforward upgrade you can bolt on with hand tools and get back to hauling.
Designed for service trucks with slide-in campers or in-bed salt spreaders, these heavy-duty rubber springs hold up under constant use without air leaks or maintenance. Their elasticity gives more travel and comfort than microcellular urethane versions, keeping the truck level and stable season after season of towing and hauling.
Customer Satisfaction Score:
97% were satisfied with this product
3% of customers were not satisfied
Ratings & Reviews
Steven
1/27/2023
The timbres suspension is still working great. I have had no suspension or breaking issues. The rear is a little more sturdy than if I had airbags but that’s what I wanted and it’s great not having to worry about air adjustments or leaking bags. Works great for me.
Jenny N.
9/26/2023
To be honest this is something that we heard with Timbren springs. I noticed that these springs are a heavy-duty spring that are best suited for trucks with slide-in campers or an in-bed salt spreader. Is this what you have? If you are towing quite a bit, then I would recommend considering an air bag system. The air bag system will be in constant contact with the axle which will give a smoother ride. They are going to be a little more expensive then the Timbren springs. The part number that I recommend is part # AL57375. The fit tips for it is that drilling will be needed, it does not fit with the factory Air Suspension system, special tools will be needed, it is compatible with in bed hitches, and it does not fit TRX models. You may also may consider a compressor system like part # AL57375 so that you have access to air on the go.
Kyle
6/8/2021
After a year these have proven to be a great upgrade to the rear suspension of my 2020 RAM 1500. They provide the support and stability needed to haul a 7x14 motorcycle trailer. Ive recently recommended them to a friend with a 18 Raptor and so far are working great for him.
Bruce
6/18/2022
Still holding up strong. Keeps me from having any sag while towing. I tow a small enclosed trailer and our RV. Still going strong.
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Condition: Like New
Notes: May have damaged packaging or minor cosmetic blemishes.
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Mark
7/23/2025
The Timbrens are working very well. If I go to get some horse grain or some other medium weight load and the go over a rough patch, speed bump, etc., I can feel them bumping against the frame. I dont think that this is objectionable, I still like the simplicity and performance of the Timbren system.