Aeon springs are at the core of Timbrens towing, hauling, and off-roading products. So what, exactly, are they?

As an alternative to air, metal, or foam springs, Aeon springs improve suspension performance as both a sole suspension and a spring helper. Made from 100% natural rubber, our Aeon springs offer a progressive spring rate. This means that the more weight applied, the harder the springs work to level your load and give you a smooth, comfortable ride.

And what about absorbing road shock? Aeon springs do that, too. The self-damping quality of our rubber springs give you a smooth, comfortable ride, even when fully loaded.

Unstable loads while towing and hauling dont just make for an uncomfortable ride. Difficult handling, rear sag, and corner sway create dangerous driving conditions for you, your passengers, and other vehicles.

Whether youre towing your RV across the country or hauling hay down the highway, our Timbren SES kits level your load, making for a safe, controlled ride so smooth, you might forget youre towing altogether.

How? Our Aeon rubber springs deliver a progressive spring rate. As load increases, our rubber springs push back harder, eliminating squat, sway, and roll. After installation, the rubber spring will be in contact with the vehicles frame. This contact wont affect ride quality youll still enjoy a comfortable unloaded ride, too.

What makes Timbren SES kits different from other suspension enhancement systems? Unlike air bags, our kits require no post-installation maintenance. And unlike other systems, you can install and haul in under 30 minutes, right from your driveway.

Key Features

• Reduces sag, sway, and roll when towing and hauling
• Comfortable ride, loaded or unloaded
• DIY installation
• Zero post-installation maintenance

Specs

• Rated Capacity: 8600 lbs
• Kit height without 1/2 spacer = 6.75
• Kit height with 1/2 spacer = 7.25

Note: Even though youre increasing the spring rate by adding this upgrade, this does not increase the GVWR (Gross Vehicle Weight Rating). Please make sure that the load does not exceed the GVWR set by the manufacturer.

What’s Included

2 x ” Rubber spacers
2 x Mounting Brackets
2 x Patented Aeon SES suspensions (hollow rubber springs)
All necessary hardware

How to Install

Timbren SES SKU# FR350SDJ – rear kit

Our Timbren SES kits are built to last. We back this up with a lifetime warranty.

Covered under this warranty are defects in material and workmanship, under normal use and service for the life of the vehicle on which the kit was originally installed.

Application: 2017-2025 Ford F-350 Super Duty 2WD/4WD