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When the rear end squats under heavy weight, steering and braking can feel off. The Timbren Suspension Enhancement System adds up to 8,600 lbs of load-leveling capacity to keep your vehicle level and steady when hauling or towing. These hollow rubber springs stiffen progressively as more weight is added, improving stability and keeping your factory suspension from bottoming out. The result is confident handling and a level stance even when you’re carrying serious weight.

Heavy loads or top-heavy setups can make cornering and crosswinds feel unpredictable. Each Timbren spring works independently to support its side of the vehicle, cutting down on body roll and sway when turning, swerving, or hauling off-center loads. With the springs taking the weight as needed, your ride feels planted through curves while helping trailers stay in line behind you.


Bumps, dips, and uneven roads are easier to handle with Timbren’s hollow rubber springs taking the hit. Acting like shock absorbers, they cushion impacts and absorb road shock before it reaches the cab. This keeps your ride smoother when loaded and helps protect your suspension from wear by preventing bottoming out on rough surfaces.

Installing extra load support doesn’t have to be complicated. The Timbren system bolts directly onto the frame above the rear axle using custom-fit brackets and included hardware—no drilling or air hoses required. Once installed, the springs automatically engage under load and return to normal clearance when unloaded, giving you a smooth everyday ride without gauges or manual adjustments.
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.
Today. We are taking a look at the Timbren Rear Axle Suspension Enhancement Kit for your Ford Transit. Before we dive in, let's see if the suspension enhancement system is gonna be a great option for your Ford Transit. Suspension upgrade Why Adding weight, more weight, and even more weight causes rear sagging, your headlights will point up, you will get worse handling and steering, less control and less comfort. With suspension enhancement added, your ride stabilizes, it levels out your vehicle, better control and steering, headlights straighten out, reduces road shock and have a safer ride in comfort. Check out the footage that we took underneath of your Transit.
We put about 250 pounds on a cargo carrier, and as you can see, the factory bounce stops don't even hit the axle. So it does feel pretty violent in the cab. Once we have the new bounce stops installed, you notice there's a lot smaller gap between our axle and the bottom of the bounce stop. It definitely helped a lot on the test scores, so the whole entire back suspension engaged much quicker. And also the biggest improvement I saw was when we took these big wide turns and really sharp turns at a higher speed.
I didn't feel the body of the vehicle roll near as much. The bracket on top is gonna be made of steel and it has a powder coated finished, so it's not gonna really rust away over time and the bounce stop is gonna be made of rubber. But it is a hollow rubber, so it's not just gonna completely stop your axle. It's also gonna flex, even with those heavier loads you may have. If we do have a really heavy load on here and it does hit the axle, it's gonna be a lot more heavy duty than the factory bounce stop that we removed earlier.
This is not gonna increase our Transit's capacity when we're hauling, it's just going to handle those heavier loads a little bit better. So the leveling capacity of this is gonna be 8,600 pounds. It goes in the same exact spot as our factory bounce stop. All you need is a socket, maybe an extension or two, a ratchet to tighten it down. It's a very quick and easy process, so let's show you how.
First you wanna chock your front wheels. Then we want to jack up the back of our vehicle. The goal here is to get the suspension on the rear axle to sag, so we have a little bit more room to work with. And then find a solid part on your frame to put your Jack stand. Let's remove the factory hardware. All we gotta do is just pull this out like this and undo this bolt. Take a 13 millimeter socket to loosen and remove this bolt. Here's our factory hardware. So there's two different options we have with our new system. One, we can just have the metal plate here and the main bounce stop with a smaller bolt. That's a little bit bigger than the factory set up. Or we can go ahead and use this extra spacer that's included with the longer bolt to make it a little bit taller. The goal here is we want at least a half an inch to a inch and a half a gap between the bottom of this and our axle. Some usual measurements to see which one's gonna be best. This one has a height of seven and a quarter inches. And this one without the spacer has a height of six and a quarter inches. What we're doing is not using the spacers. So we're using the smaller bolt and then you want the rounded part like this to be facing up towards your frame. You definitely want to use a short socket and it's gonna be a 17 millimeter. That's just going to make sure it's not gonna fall down into the socket too much, cause we do need to catch some of these threads. Lift it up into place, line it on up and thread it down. And then we can go ahead and tighten this down all the way once it's in place. Quick little tip, one, use a shallow socket, two, if the bolt kind of falls in, even if it's just a half inch, you are gonna want to put something in there just to keep that bolt pushed up in the outside of the socket right here. So the threads are gonna be able to touch the threads on the frame. Now repeat on the other side, we can take our jack's out and we can lower our Transit down and remove the chocks. Doesn't take a whole lot of time to enhance the suspension on your Ford Transit. And that's pretty much it for a look at the Timbren Rear Axle Suspension Enhancement Kit..
Customer Satisfaction Score:
93% were satisfied with this product
7% of customers were not satisfied
Ratings & Reviews

Christopher H.
8/14/2026
Love hearing this! Really appreciate the detailed feedback and photos. That extra stability when you're loaded up can make a huge difference. And installing them at 11 at night—that's commitment. Hope they treat you just as well on those mountain roads. Safe travels and we'll definitely make sure Dee Dee gets the shoutout.


Lazer S.
8/19/2026
Glad to hear they are working well for you, Ryan! Now that they are on, where you headed?

Jay S.
8/14/2026
Now that its been a year Im very impressed with them. Theres no ride detriment without the 5th wheel attached and they do a great job of mitigating squat

Brooke M.
5/7/2025
Wow, thank you for sticking with us, Don! That is awesome. I think you made an excellent choice here. Timbrens are tough and the heavy duty are SUPER tough. Glad to hear these were a good fit. Love the photos! Is that your own property?

Don
5/21/2026
The TIMBRENs work as stated during when I am pulling anything heavy. However, when the truck is not pulling anything, anyone riding in the rear seat gets a very hard jarring jolt when driving over any roadway repairs, bumps, expansion joints on bridges. I wished that I would have went with the Super Springs, or the Road Active Suspension. I may replace the TIMBRENS later.


Kate F.
5/6/2026
Glad to hear the Timbren systems worked out so well for your RAM Van Mitchell! It’s great that you noticed the smoother, more progressive response compared to the factory bump stops, especially under load. Thanks for sharing your experience with both the front and rear installs, that’s really helpful for others considering the upgrade. What kind of loads are you usually hauling with your van?

Lazer S.
6/16/2026
They definitely look like they are helping, Orlando! How are they when you aren't towing? We hear a lot of people say they can be pretty harsh when unloaded.

Kate F.
7/13/2026
Bud, thank you so much for taking the time to leave a review! I'm glad to hear the suspension upgrade helped reduce the sagging and porpoising while towing. I also really appreciate you including the installation pictures and sharing your tip about removing the rear wheels. I'm sure that will help the next person tackling the install. Thanks again for choosing etrailer!

Robin H.
9/22/2026
Thanks for taking the time to share such a detailed review and all of the pictures! The unloaded ride is a concern we hear fairly often with SES upgrades, so your experience with the 1" gap and rough-road testing will be really helpful to others considering these for their F-250. We appreciate the kind words about Naomi and our team as well. Looking forward to your update once you get some miles on them with the Rockwood!
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Brooke M.
4/1/2025
I agree with you there! There's something to be said about a product with no maintenance. Out of curiosity, because Timbrens seem to be pretty polarizing, do you use these on work trucks/vans?