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Timbren

Timbren Rear Suspension Enhancement System

Part Number: TFERSDLB

7289 Reviews | 16 Questions

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$496.65

Retail:$584.30

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2002 Ford Excursion

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timbren vehicle suspension towing/load leveling bump stops

timbren vehicle suspension towing/load leveling rear enhancement system

timbren vehicle suspension towing/load leveling bump stops rear enhancement system

timbren vehicle suspension towing/load leveling rear axle enhancement system

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Complete Breakdown of the Timbren Rear Suspension Enhancement System-TFERSDLB

Timbren Manufacturer Spotlight - Suspension Enhancement

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SCHEDULE AN INSTALLATION

12,000-lb Capacity. These hollow rubber springs sit above the rear axle to help stabilize and level your vehicle. They also provide a more comfortable ride by absorbing road shock and improving roll stability. Easy to install and use. Great Prices for the best vehicle suspension from Timbren. Timbren Rear Suspension Enhancement System part number TFERSDLB can be ordered online at etrailer.com or call 1-800-940-8924 for expert service.

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Timbren Vehicle Suspension - TFERSDLB

Highlights

Custom Fit for Your Vehicle: Mounts to existing attachment points
12,000-lb Load Support: Keeps your vehicle level and stable when towing or hauling heavy gear.
Smoother, Safer Ride: Absorbs road shock and reduces roll for better handling on rough roads.
No Maintenance Needed: Rubber springs work automatically with no air lines, compressors, or gauges.
Independent Side Support: Helps control sway and off-center loads for balanced, confident handling.
Simple Bolt-On Install: Replaces factory bump stops with brackets and hardware—no drilling required.

Features to know about

Stay Level and Confident Under Heavy Loads: 12,000-lb Rear Suspension Support

When the rear end starts to sag under the weight of a trailer or a loaded bed, this system keeps things level and stable. The Timbren Rear Suspension Enhancement System adds up to 12,000 lbs of rear axle support using hollow rubber springs that mount above the axle. As weight increases, the progressive design stiffens to counter squat and maintain proper ride height. Steering, braking, and traction stay consistent so your truck feels balanced and controlled even with serious weight behind it.

Vehicle with rear-end sag under heavy bed load showing need for Timbren rear suspension enhancement

Diagram comparing loaded and unloaded vehicle with Timbren rubber springs installed on rear axle

Smooth Out Rough Roads: Rubber Springs That Absorb Shock and Prevent Bottoming Out

Bumps, ruts, and potholes are easier on your truck with these Aeon hollow rubber springs taking the hit. They compress gradually to absorb road shock and cushion each impact, protecting your suspension and cutting down on jarring movement. The springs help prevent bottoming out so you can travel over uneven roads with less bounce and less wear on your factory components.

Truck on rough road showing shock absorption benefits of Timbren rubber suspension springs

Cut Down on Roll, Sway, and Off-Center Sag: Independent Spring Action

Each side of the system works on its own to handle uneven loads or quick turns. When cargo sits off-center or you swerve to avoid something, the independent spring action keeps both sides steady to reduce body roll. The result is better balance through curves, less sway from crosswinds or passing vehicles, and a more planted feel when towing or hauling.

Timbren suspension system demonstrating reduction in vehicle sag, body roll, sway, and squat under load conditions

Towing setup illustrating trailer sway reduction achieved by Timbren rear suspension system

Install It Once and Get to Work: Bolt-On Setup With No Air Lines or Adjustments

There’s no need for compressors or air hoses here. The kit includes two Aeon hollow rubber springs with vehicle-specific brackets and hardware that bolt onto the frame in place of factory bump stops. No drilling is required, and once installed the system automatically adapts to load without any manual adjustments. It’s a simple, durable upgrade built for hauling heavy loads day after day without maintenance or leaks.

Specs

Included Components

Includes: 2 Aeon hollow rubber springs, vehicle-specific brackets and hardware for simple installation
Replaces: axle bump stops on frame

Installation

Drilling required: No drilling required

Weight and Capacity

Capacity: 12,000 lbs
Do not exceed: the vehicle's weight-carrying capacity

Compatibility

Designed to work with: a suspension system that is in good working order

Warranty

Warranty: Limited lifetime warranty - satisfaction guarantee

FERSDLB - Rear Suspension Enhancement System with Aeon Hollow Rubber Springs by Timbren

Installation Details TFERSDLB Installation instructions

This Product Fits The Following Vehicles

2015 - 2027 Ford E-Series Cutaway E-450
1996 - 2014 Ford Van E-450
2002 - 2003 Ford Van E-550

Customer Satisfaction Score:

94% were satisfied with this product

6% of customers were not satisfied

Arrived Damaged
Product did not meet expectations

6% of customers were not satisfied

Arrived Damaged
Product did not meet expectations

4.7

7289 reviews

5 Stars		(5870)
4 Stars		(880)
3 Stars		(207)
2 Stars		(135)
1 Star		(197)

by: Steve P 05/18/2019

Just finished installing Timbren's in the rear of my Ford E-450 motorhome. The installation was very easy. The hardest part was lifting up the motorhome so the rear tires were off the ground. I always install Timbren's on all my pickup trucks, and have always been extremely happy with them, so when I bought a motorhome, that was one of the first things I did. Because my motorhome came from the manufacturer with helper springs which increased the height or clearance, the Timbren's were not in constant contact, so I purchased and install a 1" spacer (part number A25723-90AH00). Now the Timbren's are in constant contact and will maintain the correct height and not sag under load. I love Timbrens!

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by: Riding on marshmallows #2 03/23/2022

I have a 2022 E450 Sunseeker 2850.
Timbren are the way to go. Progressive unlike sumo.
I emailed the folks at Timbren and they suggested the heavier duty ones. 12,500 lbs
I needed a 1” spacer. My buddy gave me his that we ended up not using on his 3/4 dodge short bed.
My goal was to have these barely touching when unloaded.
On pick ups you want that 1” space however, motorhomes are heavy and I wanted them to work all the time.
My goal was correct. The ride is fantastic. It takes 90% of the hard jolts away.
I believe these will make everything last in my motorhome longer. Things don’t rattle like a normal suspension.

Not a hard install. It took me a hour. Longer to get out the tools than to get it done.

by: Norbert 05/14/2021

Package was damaged and the nuts and bolts where missing.
Called etrailer and they gave me a credit.
So got my own hardware and installed the product, it was easy to install except I had to raise the Rv frame by 8 inches in order to install it,good thing I have a 20t air jack .
We have not driven the Rv at this point, in a few days we will know more

by: Michael 11/15/2022

2021 Ford E-Series Cutaway

My only concern is that the rubber springs don't line up in the center of the axial.

Brooke M.

11/17/2022

Would you be able to give more detail as to what exactly is going on? Would you mind sending a picture?

by: James 08/09/2019

2017 Ford E-Series Cutaway

I just completed installation today. Directions could have been a little clearer but once I looked at it no problem.
Test drove about 3 miles and turned back one thing I noticed right away was ride was smoother.

by: Blaze 02/26/2021

Very fast shipping, had product in 2 days! Very easy to install. Hardest part was lifting the RV.

by: Mark 09/06/2019

The product works exactly as described. The biggest benefit is the experience provided by etrailer.

by: Steve 09/28/2020

Install was not bad, it took me about 1.5 hours to get them on just because I was trying to get the bolt to stay on my socket. I placed a nut inside the socket so it would reach the threads, after that it was easy. First drive felt solid definitely excited to see how they do loaded or towing. will check back when I do.

by: Dennis 02/18/2019 One Year Later

It's in it's working. I have no reason to complain.

by: Scott 06/23/2026

2024 Ford E-Series Cutaway

by: Margie 07/06/2022 One Year Later

by: Susan 07/03/2021

by: Richard 06/24/2026

by: David 03/05/2024

by: Chad 01/27/2022

by: Jim - On a ranch near San Antonio 09/20/2026

Installed the Timbren TFR250SDJ on my 2025 F-250 Platinum Plus 4WD Short Bed with 6.7 HO Powerstroke. Fit perfectly. It takes a few minutes to get the bags attached to the base. It seems like the bolt is too long but I used a vise to hold the unit while I tightened it down more and cinched the bag to the base. So if it seems it wont get tight enough and is still loose, find a way to secure the base... there's still a few more turns.

Attaching to the truck takes a few minutes to remove the OEM (2 nuts) and a few minutes to install the Timbren SES. I added about 45 minutes by dropping one of the nuts, which I finally found inside the shock absorber bracket!!

I used a hand socket but would recommend air or power tools, if you can get to the nuts, but it can be done manually. Probably took me a few extra minutes with a socket wrench because of limited space, and I'm old!

I have not tested the SES under load yet, but I was really more concerned with the ride unloaded.I ended up with a gap right at 1" between the peg and bottom of the SES. Some reviews said the unloaded ride worsened. So I drove to the nearest small town with horrible streets, bumps, holes, broken concrete, sewer covers 3" below the asphalt, etc. On the highway, the ride was perfect, completely unaffected. On my bad road obstacle course, I thought the ride improved significantly. So I think the system will give a better ride unloaded. It was a little stiffer, less roll, and smoother. It was not "bouncy" or jarring, like some reviews mention. Very smooth and felt beefier on bad roads.

I'll update after I've driven loaded. I tow a 12,000# 2025 Rockwood TT 36' with a ProPride 3P hitch. We put 7,000 miles on it across 15 states this past year, so I've definitely got a "before" baseline using the OEM bumpers.

The ordering process was great. Naomi D had great product knowledge. At first I thought I was talking to my granddaughter, but after putting her through the paces, It felt like I was getting sage advice from my Grandfather. e-Trailer seems to really invest in their customer service reps knowledge base. Also completely satisfied with the order process and delivery. They were able to mail to our PO Box, which seems to be a problem for most (our physical address is a gate on the side of a highway, with cows on the other side).

100% satisfied so far and would recommend both e-trailer and Timbren to a friend. Will update once I've done some towing, but can say the unloaded ride is unaffected or improved for my application. So far, very happy.

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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!

by: Adam 08/12/2026

I'm suitably impressed with the difference i feel.
I have about 250 lbs. of static load with my topper and Decked cargo system. This put my install gap with no spacers just under the reccomended 1 inch minimum.Then add a couple hundred more pounds hauling music gear 100 shows a year, and the stop is resting on the axle.
I feel the absorption of the Timbren material is better than the flimsy stock bump stops. More cushion.
Where i really feel the difference is in the stabilty of excessive side sway when turning while loaded.
I have a gig coming up that will involve some unpaved mountain roads to get there so I think i will have a real goid idea of how these Timbren's will perform.
Instalation took me about an hour at 11 p.m.
The product it of the highest quality in design and build.
And Etrailer is a company that I would not hesitate to buy from in the future.
Thanks Dee Dee.
You rawk!!

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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.

Adam R.

8/14/2026

@ChristopherH Dee Dee was great. Tell her I owe her a coffee!????

by: Ryan 08/16/2026

2024 Toyota Tundra

Timbren Spring Helpers were exactly what I needed on my Tundra plus a spacer kit since I have a 3” TRD lift. They were packaged neatly, with proper hardware, and excellent instructions! They absolutely do exactly what they are supposed to do! Truck rides much better and helps level out the load!

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Lazer S.

8/19/2026

Glad to hear they are working well for you, Ryan! Now that they are on, where you headed?

by: Jay S. 08/13/2025

2022 F250 Super Duty. Super easy to install. I have about 3/4" gap between the spring and the plate. Time will tell how they impact the ride quality and how much sag they mitigate with my 5th wheel hooked up.

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Jay S. One Year Later

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

by: Tony 09/01/2026

2008 Ford F-53

My F53 was like driving a waterbed down the road. With the Timbrens, it’s a different vehicle. Should have installed them years ago. Etrailer is my go to for anything trailer. FAST shipping and prompt responses to questions or concerns.

Click to Enlarge

Christopher H.

9/3/2026

Happy to hear the Timbrens are making that big of a difference Tony. Thanks for including the photo and we appreciate the kind words! Have you taken any longer trips with the Timbrens installed?

Tony

9/3/2026

@ChristopherH actually we are leaving Texas tomorrow for a week of sxs riding in Arkansas. Then traveling to Colorado for another week of riding the Rockies. Glad the Timbrens are installed.

by: Isaac B. 09/08/2026

Just got these on and haven’t been able to do a lot of testing yet, but it looks like they command their price. Huge difference in sag in the rear end of our Honda Pilot. As others have appeared to do in this review section before me, I started using a WDH with these and that looks to really be the winning combination with the Timbren SES. Our travel trailer is 3,500 lbs and it was squatting the pilot pretty well before. This timbren SES is a great addition. Can’t go wrong.

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Jesse M.

9/10/2026

Awesome! Glad to hear the Timbrens made such a big difference in the ride quality. Thanks for sharing! Happy travels!

by: Don 05/05/2025

Absolutely Pleased with the TIMBRENS. They were easy to install, and took less than an hour to install both. I noticed a slight stiffness in the ride as the rear bounced over a bad roadway. Towing is great, with a nice level and smooth ride. I am glad that I did not order the heavier duty Timbrens, than what was recomended for my truck. I believe the ride would have been too stiff. If you look at the photos showing the timbrens, the truck is still lifted in the rear, so what you see is a big gap between the rubber, and the steal plate. When the truck is lowered, there's 1" of space as it should be. BTW, I have been purchasing from etrailer for years now, and I have to say that I have never had any issues with any orders. They are my go to folks for all of my vehicle suppension stuff and trailer stuff. You can't go wrong with buying from them.

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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 One Year Later

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.

Gwendolyn Y.

5/21/2026

@Don I'm sorry to hear that the Timbrens didn’t pan out to be as great as you originally hoped. Swapping over to the SuperSprings or the RoadActive Suspension will definitely have less of an impact on your day-to-day driving. Out of the two, the RoadActive Suspension would have the least effect. If you ever have questions about the RoadActive Suspension or the SuperSprings, let me know and I’d be happy to help out.

by: Mitchell 05/02/2026 One Year Later

It has been almost a year since I installed Timbren Suspension Enhancement Systems (DVF350 and DVR350R) on the front and rear of my 2003 Dodge RAM Van 3500. These bumpers replaced the OEM bump stops that were on my van. I like the Timbren bumpers much better than the OEM bump stops because they provide a progressively cushioned response for suspension compression when traveling over significant humps like speed bumps in a parking lot, or curb ramps into driveways. I did not like the abrupt stop the OEM bump stops provided when traveling over the same objects. I installed the Timbren rear bumpers first, and after a few months of use, I decided to add them to the front. In both cases, the front and rear Timbren bumpers were easy to install once the OEM bump stops were removed. Installation required reuse of the factory hardware. On my van, the Timbren bumpers are not always engaged. Under normal load and travel conditions the bumpers are relaxed and about 1/2” away from the suspension landing points. However, their presence is much appreciated and very noticeable when the van is carrying heavy loads or handling significant humps.

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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?

by: Orlando 06/14/2026

The timbres bump stop is exactly the right height to meet the axel when the trailer is connected with all its weight onto the hitch. I have an Andersen weight distribution hitch and it levels out perfectly. The day picture is with the coach (Winn 2100bh) with factory equipment. The night picture is after the timbres are in place. Looks good.

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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.

by: Bud 07/08/2026

Stiffens and corrects kneel in rear end of 2023 Chevy Silverado 1500. You will notice a stiffening of the rear end suspension while unloaded, but it’s a fair trade off to prevent sagging and porpoising while towing. I found it easier to pull the rear wheels and work from the side than underneath the vehicle while installing.

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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!

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See what our Experts say about this Timbren Vehicle Suspension

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