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When you’re hauling or towing heavy weight, the rear end can sag and throw off your steering and braking. The Timbren Rear Suspension Enhancement System adds up to 6,000 lbs of extra rear-axle support so your ride stays level and controlled. The hollow rubber springs sit above the axle and get more rigid as weight is added, keeping the truck steady under load without affecting normal ride height when empty.
Road shock and bounce can wear you down fast on long drives or uneven terrain. Timbren’s Aeon hollow rubber springs compress along internal folds to absorb impacts and cushion the ride. They let the leaf springs move freely with light loads but firm up when needed, reducing harsh bottoming out and protecting your suspension from extra wear.
Sharp turns, uneven loads, and passing semis can all cause sway or lean. Each Timbren spring works independently to handle off-center loads and reduce body roll through corners. The added stability keeps both the truck and trailer more in line so crosswinds or quick maneuvers feel steadier and more predictable.
Getting load support shouldn’t mean a complicated setup. The kit includes two Aeon hollow rubber springs, vehicle-specific brackets, and mounting hardware that replace the factory bump stops on the frame. No drilling or air lines required—just bolt them up and go. With no compressors or adjustments to fuss with, it’s a simple setup that’s built to work automatically every time you load up.
Customer Satisfaction Score:
94% were satisfied with this product
6% of customers were not satisfied
Ratings & Reviews
Awesome product!
I still have to try them out but they were a snap to put on.
Preforming well. Better handling.
Awesome product vehicle rides great pullling the RV is awesome.
Simple install, and did the job, no more rear sag when towing loads
Quick service and delivery. Parts were in stock. Overall great service!
The suspension add-ons work great, helps take the bounce out with heavy loads. Also don’t seem to be looking out the sky instead of road.
Thumbs up
So far, so good! Took it for a test run and the truck with the camper on it was as even as if it had no load on it. The Timbren package was delivered on time and ready to install.
Tricky to install. Doesn’t really make much difference in the attitude or ride of the truck.
Eric
5/23/2022
Yes, it is a ‘98 f150. Truck is not lifted. There is something like 58 inch gap.
Jenny N.
5/23/2022
I actually do have more questions that I would like to ask to see what is happening with the springs. Do you drive often with the truck loaded? Are the springs making contact with the axle when the truck is loaded? Since it is an older truck - is the suspension in good working order?
Timbren rear suspension boots/springs went on easy once factory bumpers were removed. Have Vice Grips handy. Waiting to test my Ford F-150 crew cab with pop up camper.
They're a simple thing, but they really make a significant difference when towing my trailer.
Vincent
11/1/2020
These have been great for towing and hauling by keeping the tail up a lot more level. Theyre definitely beneficial to the front steering and suspension components. I wont hesitate to put them on any other trucks I get.
Vincent
11/1/2020
These have been great for towing and hauling by keeping the tail up a lot more level. Theyre definitely beneficial to the front steering and suspension components. I wont hesitate to put them on any other trucks I get.
These jounce springs work as advertised. They were easy to install, and one year later, I have had no issues with them. I do wish that I had taken better measurements of the amount of spring that I needed to hold up the back end better, but I'm still part way through the learning curve on this. Still, a vast improvement over the factory snubbers.
The Timbren springs bolted on perfectly to the existing frame holes. It is a great no maintenance enhancement to my truck when I have a load. I have about 1.25 inches of clearance between the axle and the spring. When the truck does not have a load it rides just as nice as it always did.
I used to have some Air fillable Helper stabilizers. Always losing air. Not refillable from Cab. Finally tore & I had to replace them. I haul small loads of Gravel and such routinely so these work great. Already Used & they worked as advertised. Extremely satisfied!
Oh boy!! Great product, just not right for my truck. F-150 Harley Davidson 2002. The bump stops rest on the axle pretty firm so maneuvering a curve in the rain leads to unintended drifting!! I have intended to reach out to George for assistance. I’m sure trimming the bumps a bit will fix my issue. They are great on my 04 Suburban. I have recommended them to many people that haul loads. Thanks
My 1/2 ton Ford had what felt like excessive bumper drop when I attached my 19 Ft. trailer. A weight distributing hitch mostly took care of that, but I wasn't too happy with how much I had to load the torque bars. The Timbron bumpers helped quite a bit. They also really reduce squat and roll when hauling any load that's at the upper end of capacity. I'd call it very good results, especially for the relatively low price and ease of installation.
I had them on it 30 minutes, and most of that time was spent getting the old bumpers off
Amazing. Hands down the best thing ever invented besides duct tape
I placed my order over the telephone. The customer service person was very nice and very helpful. Excellent customer service.
Received my timbren parts in a very timely manner. I installed the parts a couple of days ago. Easy to install. It feels more solid on the road and curves. I would have rated it five but haven't hooked my camper to it yet so I can't rate how it handles under a load but empty it handles better than before. Didn't change the quality of the ride. I will give another review after putting it under a load but I expect it to be a five.
Trena
2/16/2021
It has been a year since I purchased timbren for my f150 Ford. I am completely satisfied. I have a 31 ft.pull camper. They level my camper just like I wanted them to. It also makes my truck more stable on the road loaded and unloaded. Very easy to install. I would definitely purchase again..
TOTALLY AWESOME PRODUCT.....Though I wished I had them when we trailered the hot rod out to New Hampshire last month. We received this item late as it was on back order for far too long. I did get a chance though to put the levelers through their paces when using our 18' lo-boy to haul large limbs, branches and other brush to compost site. The truck did NOT flinch and inch downward as it did WITHOUT the levelers.
I liked too that the installation was basically pretty easy. I highly suggest going this way and leaving the air bags for the big truckers. Don't have to fuss with filling or deflating bags or dealing with leaky bags.
This is a presto zippo installation and you can play "immediately".
Charles
9/2/2019
I couldnt be more happier with this product. Truck is still remaining relatively level, even with the hot rod in the enclosed trailer. Hot rod weighs in at 2200 pounds and nary a between truck and trailer. As in my earlier review, I HIGHLY recommend this product over air bags...so much LESS hassle .
Paperwork suggested .5”-1.5” gap between timbren and axle. With the one 1” spacer supplied a .75” gap was what this truck ended giving. Photo is of factory bump stop on left and timbren bump stop on right. Great product so far.
It took me a couple hours to put on my truck but everything fit good. I haven't pulled my camper yet but I will be able to in a couple of weeks. I also replaced the shocks on the truck so I'm expecting it to ride like a new vehicle .
I was able to pull my RV with 550lbs tongue weight without the excessive rear end squat. I did notice however that I can feel them engage during normal unloaded driving when I drive over dumpy parts of a road where before there was more spring travel. It’s not bad but a stock 97 f150 does have a smooth ride. These will take some not, all of that away. But the up side is well worth limited ride change.
Everything exactly as expected. Great service. Already on the truck.
I'm very pleased with your product it works great with my set up I have a 2002 Ford f-150 crew cab with a 4 inch lift I pulled my 27' travel trailer the truck Harley squat down the ride was great I installed the fr1525hd and add 3 4" x 1inch spacers # a25723-90ah00 to make up lift difference and used a 3/8" x 6" bolt installation took about one hour thanks again pictures of driver side and passenger side
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Jenny N.
5/23/2022
You mentioned that the springs have not made a difference in the ride of the truck. I wanted to ask you a few questions. Can you confirm that you have a 1998 Ford 150? How much of a gap is between the bottom of the Timbren spring and the axle? Is your truck lifted?