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When the bed is packed or the trailer tongue is heavy, the rear end can sag and throw off handling. This Severe Service Timbren Suspension Enhancement System adds up to 7,000 lbs of extra support above the rear axle. The hollow rubber springs sit 1" above the axle, letting your stock suspension work normally when unloaded but stepping in when weight builds. The progressive design gets stiffer as it compresses, keeping your truck level and steering steady no matter how much you’re hauling.
Bumps, potholes, and uneven roads can beat up both you and your suspension. The Aeon hollow rubber springs in this kit act like heavy-duty cushions that take the brunt of road shock. They absorb impact instead of passing it to the chassis, creating a smoother, more stable ride when loaded. By preventing bottoming out on rough roads, they also help extend the life of your factory suspension components.
When a curve or gust tries to push you around, each Timbren spring works independently to keep its side level. That reduces body roll and sway when cornering or swerving, and helps control trailer movement when wind or passing traffic starts it rocking. The added stability helps the trailer stay in line and makes highway towing feel more confident and controlled.
Upgrading your suspension doesn’t have to mean major fabrication. The kit comes with custom-fit brackets and hardware that bolt directly onto each frame rail above the rear axle—no drilling required. Once installed, there are no air lines, compressors, or gauges to manage. The system simply replaces your factory bump stops for a clean, dependable setup built for heavy hauling or work duty.
Customer Satisfaction Score:
97% were satisfied with this product
3% of customers were not satisfied
Ratings & Reviews
Turned my 1/4 ton into a much better and stable hauler
Excellent for towing , not smooth driving without a load .
I didn't like the ride after installing. The ride was so bouncy I had to remove again.
Easy to use and to attach to the frame.Holds up well to heavy loads.
Has eliminated the bouncing previously experienced during highway travel. Easy to install and a simple solution. +++
Have them in the front and rear and work great! The rides a bit rougher but does the job I bought them for!
The product came in 3 days as I picked. It came in nice box and packed well. First inspection of the product is exactly what I wanted. Will be installing today and towing my travel trailer soon so I will leave a future comment.
Rather stiff now but great for traileri ng.
Arrived a day early, and everything looks to be in perfect order. Will be installing these on my 2014 F-150 SCrew over the weekend. Looking forward to seeing how they perform.
Fast shipping looks like everything is here, Packaged very well. will install next couple days. no problems so far.
works better the air shocks
I got these for my 2015 f150, my truck doesn't sag anymore when I have my trailer hooked up.
I like them well enough, but my wife had complained that the ride was too rough after. I removed the spacer and it seems to drive better in town. I haven’t towed my trailer yet, but it was very nice when I had the spacer in last summer.
Awesome product , makes my truck ride kinda stiff when the weather gets colder in Northern Indiana , But really works better that air bags when I tow my Trailer .
Springs were EXTREMELY easy to install, no more than 30 minutes total. Pulled a rental camper up north and had some squat and sway issues, even with load distribution hitch.
Ordered the springs and had them shipped to the campground, installed them on site. Should be a good comparison how the camper handles on the way home!
So far, very impressed.
Easy install in my 2007 2wd F150. pulled a 4800 pound 26 foot travel trailer 200 miles the next day with no issues. Along with adding a load leveling hitch, I couldn't ask for better upgrades for this truck. My wife couldn't feel any buffeting when tractor trailers passed, and we pulled at 60 to 65 mph.
Great product, ordered these for my F-150 and was upgraded to express shipping. Received product in 4 days and took me a total of 20 minutes to install on both sides. Truck does not squat at all when it comes in contact with the springs now. Still have the smooth ride when not towing, towed my trailer with 4800lbs with no problem. Thanks for a great product.
Anonymous
4/12/2014
Still working the same as new. Towed 6500 lbs. and truck set normal. Still a great product. Thanks again!
I have a Half-Ton Jayco Eagle Lite 5th wheel. My brother installed Timbren SES on his truck and with his encouragement, I purchased a Timbren SES from eTrailer. It took only 20 minutes per side to install. Before Timbren, my truck suspension would lower 2-3 inches with the 5th wheel. After Timbren, my vehicle is perfectly level at all times, the ride is very smooth. I strongly recommend this product to anyone that needs to enhance their vehicles' rear suspension. A great product. My only regret is that I did not make this investment sooner!!!
Frank P., Chattanooga, TN
Frank P.
5/28/2015
I have towed my 5th wheel several thousand miles over the past year since installing the Timbren SES purchased from eTrailer. Not only have I been very pleased with this product but have shared the plus features and good news of this product with many other half-ton towers.
Easy to put on .took me about 35 mins for both sides. I pulled my RV same day and worked like a champ. The factory parts on my F 150 were a joke. Also hardly any rear squating ,my truck stayed level and the ride was 100% better.
My order arrived yesterday. Then this comes; another email asking for a 5-star review. I opened the link while thinking that what would really be nice is if they sent instructions. And behold, there it is- instructions and a video. I’m shamed and amazed. Thank you, eTrailer.
Yet another great experience with etrailer! Product arrived in time and good packaging. The timbren springs work great to keep my truck level when hauling my gooseneck and tractor!
Product arrived right on time. Installation was easy. Product was of excellent quality and just as advertised by etrailer. Timbren rear suspension enhancement system. I pull a 32' fifth wheel.
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Terry C.
7/9/2016
Installed in about 30 minutes used a lift without any issues. Have towed my 32 travel trailer over 4000 miles and performs great. The truck is solid when under a load and no difference than stock when not.