Timbren Rear Suspension Enhancement System
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1979 Chevrolet Blazer
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1979 Chevrolet Blazer
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When you’re towing or hauling and the back of your vehicle starts to sag, these Aeon hollow rubber springs give you up to 6,000 lbs of extra support over the rear axle. They replace the factory bump stops and sit 1" above the axle, letting your factory suspension work normally when unloaded. As weight increases, the springs get more rigid to keep your ride level, improve steering and braking feel, and prevent bottoming out on rough roads.
Rough roads, potholes, and dips can shake both truck and trailer. These hollow rubber springs act like shock absorbers, taking the brunt of bumps and vibration before they reach your cab. That means a smoother ride when you’re loaded and less wear on your stock suspension. The natural elasticity of the rubber provides more travel than microcellular urethane setups, giving a softer ride while still handling heavy loads.
Each side of the rear suspension works on its own, so when you take corners or haul off-center loads, one spring can compress without affecting the other. That helps reduce body roll during turns and keeps both tires planted for better control. The steadier ride also helps stop trailer sway sooner since less movement transfers from vehicle to trailer.
There’s no need to run airlines or manage air pressure—installation is simple. The custom-fit brackets bolt directly to the frame above the axle with no drilling required. All necessary brackets and hardware are included, so once these are bolted into place you’re ready to tow or haul without any ongoing adjustments or maintenance.
Customer Satisfaction Score:
94% were satisfied with this product
6% of customers were not satisfied
Ratings & Reviews
Michael B.
8/9/2021
springs are holding up well, they still work like new.
Honestpete
7/3/2025
Still glad I installed these!
Nick S.
7/3/2025
Carlos C.
9/18/2018
A year later and the suspension enhancement system is working flawlessly.
Tracy
12/31/2024
I contacted the company directly and they were quick to send me out some slightly shorter cushions. This has returned my ride back to what it was. I am very grateful for them up in Canada for being so quick to help me. Great company to deal with. Concerning installation. It should be recommended that they are unbolted from the piece that gets pushed into the cup. A light amount of silicone lubricant aplied in rim and hammered with a rubber mallet would be more appropriate. And then bolting it back on rather than trying to put blocks and squish the rubber down hard enough to get that to push into the cup.
Jmacs53
6/17/2018
Very happy with the product!! Highly recommend!!
Nicholas M.
9/18/2019
The Timbren Rear Suspension Enhancement System has worked out wonderfully for my 2004 Suburban. I use the vehicle as a work vehicle. I am an electrical contractor and haul about one ton of tools and supplies in it every day. It handles as if there is nothing in it.
Cw
9/8/2019
Great!.... Made it all the way down to Georgia, with smooth riding..... lll be shopping again soon for a newer Reese 5th Wheel Base.... Thanks Guys
Rob G.
9/1/2021
Still 5 Stars!!! I run a mobile locksmith business and carry over a 1000 lbs in tools and product and the Timbrens are still working great. My Tahoe rides as smooth as ever!!!
Dawkins
6/1/2022
They have been great. Since there is no gap between the bumpers and the axle pad, our ride is a bit stiff. They really helped the handling while towing.
Roger
8/31/2020
Little bit of a ruff ride without my trailer hooked to it but not to bad. Would still recommend to anyone. Supports the trailer 10x better than without.
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Francis
2/21/2024
after one year of use the rubber springs are like new , no damage , no crack.