Timbren Suspension Enhancement System - Severe Service - Rear Axle
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2009 Jeep Liberty
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2009 Jeep Liberty
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When you’re hauling a heavy camper, salt spreader, or loaded bed, rear-end sag can throw off your truck’s balance. The Timbren Suspension Enhancement System adds up to 7,000 lbs of load-leveling capacity to keep your vehicle level and steady. The hollow rubber springs sit above the rear axle and automatically stiffen as more weight is added. This progressive spring rate helps maintain steering control, braking stability, and overall ride confidence when the load gets serious.
Bumpy roads and uneven terrain can beat up your suspension. Timbren’s hollow rubber springs act as built-in shock absorbers that take the brunt of bumps and rough surfaces. They cushion lighter loads and keep the ride comfortable while protecting your factory suspension from bottoming out. That means less wear on your leaf springs and a smoother, more controlled ride even when the road turns rough.
Sharp corners, swerves, or uneven loads can make a truck lean or sway. Each Timbren spring works independently to support its side of the vehicle, cutting down on body roll and helping you stay planted through turns or crosswinds. The independent action also helps when hauling off-center loads so both sides stay balanced and stable no matter what’s in the bed.
Adding serious support doesn’t have to mean complicated installation. This system includes custom-fit brackets and hardware that bolt directly to the frame—no drilling required. With laser-cut steel pieces that fit cleanly above the rear axle, you can install it using basic tools and get back on the road with confidence that your setup is built to handle real work.
Timbren springs will not increase your vehicle's weight-carrying capacity. Do not exceed the manufacturer's recommended weight limit.
Videos are provided as a guide only. Refer to manufacturer installation instructions and specs for complete information.
Hello everybody, this is Jeff at etrailer.com. Today, we're gonna take a look at this Timbren Severe Service Rear Suspension Enhancement System. Now, this is a custom fit part, it is designed to fit the 2022 Toyota Tundra trucks. And on a custom fit part, what I like to recommend for you is to go to our website, use the fit guide, put in your year and model vehicle, and it'll show you if this will work for your application. Now, this kit here will improve the suspension, the handling, and safety on your vehicle, and this is a severe service kit, and they're recommended when using like a slide-in camper or a salt spreader on your vehicle. Any application that'll require maximum stability, meaning reducing roll and sway, calls for a severe service upgrade.
And most rubber springs used on pickup trucks are double convoluted design, provides a perfect blend of capacity and ride quality, but these rubber springs that are used on the severe service, as you can see, they are a single convoluted design. Basically, the single convoluted springs are shorter and wider, and they're designed to resist weight more aggressively, and the result is reduced ride quality in exchange for more stability. Now, these do work independently side to side, these will help compensate for off-center loads. They do reduce body roll and swerving in turning corners. What's also nice is these do act as shock absorbers, taking the brunt of any bumps and rough roads, which will help extend the life in your vehicle suspension.
This part will include everything shown here, it includes the two Aeon rubber springs, these vehicle specific mounting brackets, and the hardware for its simple installation. And these do install directly onto your frame, they replace the bump stop, there's no drilling required. Does come with a nice set of instructions that'll describe how it goes together. Few specs on this, the capacity is 7,000 pounds. Now, one thing I do wanna mention is even though you're increasing the spring rate by adding this upgrade, this does not increase your gross vehicle weight rating of the vehicle, so you still wanna make sure not to exceed the manufacturer's recommended weight limit.
And also, this is designed to work with a suspension system that is in good working order. But that should do it for the review on this Timbren Severe Service Rear Suspension Enhancement System..
Customer Satisfaction Score:
88% were satisfied with this product
12% of customers were not satisfied
Ratings & Reviews
Tom E.
8/9/2026
Still working great! No issues. Other than being dirty, they look and perform like new.
Jerred H.
8/9/2026
James
7/27/2026
So far they have been fine. They are part of my suspension upgrades, along with stable loads and sway bar. I wasnt worried about harder ride when camper off, I wanted best suspension when camper was on. I would definitely recommend them.
Charles
2/8/2026
Excellent product. Does exactly what they were designed to do. I removed the sever duty extension. Now the ride is soft when unloaded. But yet smooth when towing or loaded heavy.
Andrew N.
2/9/2026
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Heather A.
5/26/2026
Wow, that is exactly what we love to hear about these springs! That is a serious camper. Any plans with it this summer?