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When hauling or towing causes rear-end sag, these hollow rubber springs take on the extra weight so your ride stays level and stable. With a 6,000-lb capacity, the Timbren Rear Suspension Enhancement System adds solid support to your factory suspension, keeping steering, braking, and handling consistent even with heavy loads in the bed or on the hitch.
Bumpy roads and uneven terrain can make a loaded truck feel harsh. The hollow rubber design cushions bumps and absorbs road shock, softening the ride whether you’re towing or carrying gear. The springs let your leaf suspension move freely under light loads, then firm up as more weight is added for a comfortable ride that adapts to what you’re carrying.
Sharp corners or gusty highways can throw off balance when hauling weight. Each spring works independently to keep both sides planted, cutting down body roll and sway. That independent action also helps when loads aren’t perfectly centered, keeping your truck and trailer stable through turns or uneven ground.
No air lines, compressors, or adjustments—just bolt it on and go. The kit replaces your factory bump stops with custom-fit brackets and two Aeon hollow rubber springs that mount above the rear axle. With no drilling required and all hardware included, it’s an easy upgrade that gives long-term support without maintenance or air pressure checks.
Customer Satisfaction Score:
91% were satisfied with this product
9% of customers were not satisfied
Ratings & Reviews
Daveinsedrowoolley
1/12/2015
A year later and 5,304 miles pulling the trailer, I think the Timbrens are a good investment. With a typical pull of 2,555 lbs of trailer and load, and approximately 300 lbs of tongue weight, Im finding the truck actually rides better than it does with no load. And, theres no maintenance whatsoever!
Mike L.
11/28/2018
The Timbren Aeon springs are meant to be used on a suspension thats in good repair. Normally, the vehicles ride will be completely normal until the rear suspension is loaded either from cargo or by the tongue weight of a trailer, at which time the suspension will compress far enough that the Timbren springs come into play.
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
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
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Patrick B.
12/18/2013
Keep in mind that the gap Timbren refers will diminish as the springs wear. Since the truck is a 2000, it probably has some miles on it and if it has hauled heavy loads in the bed or has pulled a trailer, then the leaf springs may just be worn.