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  1. Vehicle Suspension
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  3. F-350 Super Duty
  4. 2024
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FITS 2024 Ford F-350 Super Duty
Timbren Suspension Enhancement System - Rear Axle
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Timbren Suspension Enhancement System - Rear Axle

Retail:$468.32
Our Price: $398.07
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Vehicle Suspension
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2024 Ford F-350 Super Duty

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Call etrailer.com at 1-800-940-8924 for expert service. We are your Ford vehicle suspension experts, and offer a great price. etrailer.com carries a complete line of Timbren products for your Ford F-350 Super Duty 2024. Timbren Suspension Enhancement System - Rear Axle part TFR350SDJ from Timbren can be ordered online at etrailer.com. Complete vehicle suspension installation instructions and technical support.
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2024 Ford F-350 Super Duty - Timbren Suspension Enhancement System - Rear Axle

  • Rear Axle Suspension Enhancement
  • Jounce-Style Springs
  • Extra Heavy Duty
  • Timbren

8,600-lb Capacity. These hollow rubber springs sit above the rear axle to help stabilize and level your Ford F-350 Super Duty. They also provide a more comfortable ride by absorbing road shock and improving roll stability. Easy to install and use.


Features:

  • Improves suspension, handling, and safety
  • Provides additional support as needed so you always have a smooth, comfortable ride
    • Allows the leaf spring ample movement while cushioning light loads
    • Becomes more rigid as more weight is added for a great performance when you're hauling a heavy load
      • Increases stability
      • Reduces vehicle sag
  • Works independently - side-to-side adjustment
    • Helps compensate for off-center loads
    • Reduces body roll when swerving and turning corners
  • Acts as a shock absorber, taking the brunt of bumps and rough roads
    • Extends the life of your vehicle's suspension
  • Includes 2 Aeon hollow rubber springs, custom-fit brackets, and hardware for simple installation
    • Installs directly onto frame
    • No drilling required


Specs:

  • Load-leveling capacity: 8,600 lbs
    • Timbren springs will not increase your vehicle's weight-carrying capacity. Do not exceed the manufacturer's recommended weight limit.
  • Lifetime warranty
  • Satisfaction guarantee


An example of sag on a vehicle's rear axle under a heavy load

Whether you're hauling heavy loads in your bed or cargo area or you're towing a trailer, you will often see the rear of your vehicle sag while the front end rises. In these cases, the rear axle is handling not only the weight of the cargo, but also more of the vehicle's weight. Because less weight is on the front axle, the front tires are making less contact with the road. Overall handling - traction, steering, and braking - is negatively affected. But the resistance from Timbren's Suspension Enhancement System works with your factory suspension to keep your vehicle level and improve your driving experience.


Diagram of the Timbren spring installed

The Timbren system comes with custom-fit brackets that are bolted onto each frame rail above the rear axle. Hollow rubber springs are bolted to the bottom of the bracket and hang down to where the bottom of the spring sits, 1" above the axle. The inch of clearance allows the existing factory suspension to operate normally under light loads and standard terrain, ensuring the smooth, comfortable ride that you are used to.


Animation of a standard Timbren rubber spring

Timbren Suspension Enhancement Systems are designed to work progressively. When the hollow rubber springs are compressed, the convoluted design causes them to quickly collapse along the folds. Once the folds are compacted, the stacked barrel shape increases resistance, stiffening the suspension and keeping your vehicle level.


Timbren suspension system works to prevent body roll

Each hollow rubber spring works independently to support the driver's side or passenger's side of your vehicle. This is helpful when you swerve or make sharp turns. Each spring is activated when it is needed, so body roll is greatly reduced. The independent action also works well when you are hauling off-center loads.


An example of a trailers swaying

Because the vehicle handles better with the springs, less turbulence will be passed along to the trailer, and this helps to keep the trailer in line. Your driving comfort is further enhanced if the trailer does begin to sway (from a gust of wind or a passing semi), because the movement from the trailer is not transferred to your vehicle. This also works to make the sway subside more quickly.


An empty truck on a bumpy road without Timbren

Another great feature of the rubber construction is that the springs absorb most of the road shock, creating a smoother, more stable ride overall. Wear and tear on the factory suspension is also lessened because the rubber springs work to prevent bottoming out on rough roads.


Timbren Suspension Enhancement Compared to the Competition

Timbren's Suspension Enhancement Systems are much easier to install than air springs - there are no air hoses to run, no compressors or gauges to hook up, and no manual adjustments to make. The rubber construction makes Timbren's springs more elastic than similar products constructed of microcellular urethane. And more elasticity allows for a more comfortable ride because the rubber has more travel.



FR350SDJ Timbren SES with Aeon Hollow Rubber Springs - Rear Axle

Item # TFR350SDJ

Installation Details TFR350SDJ Installation instructions

Customer Satisfaction Score:


Customer Reviews

Timbren Suspension Enhancement System - Rear Axle - TFR350SDJ

Average Customer Rating:  4.7 out of 5 stars   (6013 Customer Reviews)

8,600-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.

by:

These keep my truck level with my slide in camper on board. It no longer rests on the helper springs. I have gained over 2” of height on the bed. Super easy to install. They also are noticeable on corners. Not nearly as much lean.



by:

The original timbrens were much too stiff and resulted in the elongation of the hitch pin holes. I opened a line of communication with Timbren had me make very specific measurements, and sent me replacement springs (shorter). I have not installed them yet (and have not found need for them). In my opinion these are only appropriate for heavy, permanent loads such as a slide in camper or welding setup and such.
I would not recommend them for periodic loading applications of less than 50% payload capacity on a 22 F350 SRW

Timbren customer service was excellent



by:
FordF-350 Super Duty

In stalled these on my 17' F350 SRW, & these work great if you haul a gooseneck for a living or haul any type of trailer. No sag whatsoever,but lose maybe like 1-2" of height when loaded. From the price, they beat having to install bags that will eventually need maintenance.



by:

The Timbrens worked well however because of the rougher ride I chose to remove them and replace with airbags and onboard compressor. Being able to adjust the ride while pulling a heavy 5er, made for a much better ride. I would put the timbrens back on the truck if the airbags ever fail.



by:
2022 FordF-350 Super Duty

Took about 45 minutes to install. But that was 2 trips into the house cause my deep drive sockets were buried. F-350 gasser with 8’ box, Fiberglas cap, 200lb wooden storage drawers and estimated 400lbs in tools. I tow a 14k bumper pull dump that squats the truck. I installed the spacer with the timbrens and it sits on the original axle stop. Ride quality is unknown as I haven’t driven it yet.



by:
2014 FordF-350 Super Duty

I've had the Timbren suspension on my F350 for a year and they work great, I tow a 5th wheel weighing 14,500lbs and no squat and no sway!



by:
FordF-350 Super Duty

This is the second purchase of timbrens from Etrailer. I had installed timbrens on another F350. The installation is simple and they improved our towing experience.



by:
2022 FordF-350 Super Duty

Installation was extremely simple. So simple I was able to install this kit with one arm (elbow reconstruction 3 weeks ago). Can’t wait to see how it handles the 5th wheel.



by:

They did exactly as advertised. Reduced bed travel downward when hooking up and maintained a good ride.



by:
2020 FordF-350 Super Duty

This is an excellent product, performs just as stated and does help with the ride when towing out fifth wheel



by:
2015 FordF-350 Super Duty

I bought these to offset any squat that I may get while hauling my fifth wheel camper. It literally took me about 15 minutes to remove the old ones and put these onto my 2023 F350. Much easier than dealing with air bags.



by:

These work great. I have had them a year. They work the same or better than air bags. Super easy to install. Minutes with a beer in hand.



by:

It looks like they are going to do the job. Easy install even had to take one back off to remove spacer. Gained back at least 1-1/2. Truck sits at least an inch off overloads. Little pricey I think for what they are but lot cheaper than air bags. Need to take after photo in day light.
2023 F350



by:
2023 FordF-350 Super Duty

Love these suspension enhancements, great price and arrived on time in box in excellent condition.



by:

Smooths out the bumps. I'm very happy with the product. We traveled on the Alaska highway last summer pulling a 5th wheel with no problems.



by:
2021 FordF-350 Super Duty

These are great!! Removed the sideways motion in curves, removed the front/back rocking motion when crossing interstate bridge joints, and made the truck level with the camper attached. Simple installation as well.

Sean

10/17/2023

Product is still working great. No cracks or tears in the rubber. Still softening the bumps on the roads.

Etrailer Expert

Mike L.

11/8/2023

@Sean Glad to hear your # TFR350SDJ Timbren Helper Springs are working well for you!


by:

They work great, I have them on my 2022 F350 DRW with my 2023 1150 Arctic Fox camper



by:
2018 FordF-350 Super Duty

Product was easy to install, 1/2 hr taking my time. Used a open end wrench and floor jack. My 2018 F350 Super Duty Super Cab 4wd no longer plunges over bumps, it has lost all its rear end sway on turning, carries my load much smoother ( loaded all the time ). Even with the load I always carry, the vehicle sits 1” higher in the rear. Prior to the install I was constantly hitting the rubber stops on my factory overload springs.

Andrew

6/10/2019

Excellent! I have since purchased another set from you for a 2019 F350 diesel. These things are just the ticket! The ride and handling is so much better!



by:
2024FordF-350 Super Duty

I have used these on all of my trucks. They work as described.



by:

Perfect fit. Installation was pretty easy. Took me about an hour for both sides.



by:
2024FordF-350 Super Duty

These things work great the etrailer person I spoke with was outstanding.



by:

This is an absolute MUST have item if you are hauling with your truck. Hands down the best investment in suspension technology. No sag thanks to the addition of the 1” spacer. My 24,000lb triple axle 5th wheel with a pin weight os 4,000lbs is towed effortlessly from a single axle F350 cross country with no sag at all. My truck sits absolutely level. The helper leaf springs are not engaged and the truck is smooth and extremely stable, even without sway bars!!

Love and highly recommend this product to every SuperDuty owner i meet.

Best investment ever.



by:
2019 FordF-350 Super Duty

We travel full time in our fifth wheel camper. I installed these Timbrens on our 2019 F350 and they perform great! Keep our truck sitting level with camper hooked up. They also help improve the ride while traveling.

Paul

7/23/2023

Excellent! Have sold that truck and have a new F 350 but purchased a dually this time. And yes we installed Timbren on it as well.



by:
2022 FordF-350 Super Duty

Installation was simple, took all the squat out of my 2022 F350 when pulling a goose neck 3 horse living quarters horse trailer



by:

Super easy to install. etrailer video madder it even easier. Great shipping and service.
Helped with my 5th wheel hauling!

Garyk1000

7/18/2023

The Timbren suspension really makes a difference over the factory bump stops when hauling our 5th wheel. The truck is not rear heavy and drives significantly better. Its a great safety device and doesnt reduce the ride quality when hauling. Id HIGHLY recommend these to anyone who is hauling a load. Great product, too bad the manufacturers dont use these in the stock trucks!!


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See what our Experts say about this Timbren Vehicle Suspension

  • Is the Timbren Suspension Enhancement System Compatible With Sulastic Shackles?
    You will be able to use the # TFR350SDJ Timbren Suspension Enhancement System with your Sulastic Shackles as long as you still have the correct clearance. The Timbren attaches to your frame rail in place of the existing bump stop. According to Timbren, there should be 1/2" to 1-1/2" of clearance between the rubber spring and the contact point on the axle. The # TFR350SDJ is 7-1/2" in overall length. If you measure from your existing bump stop attachment point to the axle and it is 8-9"...
    view full answer...
  • Recommended Timbren SES for 2020 Ford F-350
    If you're carrying heavy payloads, the Timbren Suspension Enhancement System - Rear Axle # TFR350SDJ are the perfect solution and are a confirmed fit on the 2020 Ford F-350. The great thing about these Timbren SES Springs is that they only engage when the truck is loaded, so they won't effect your unloaded ride quality. The # TFR350SDJ will help lessen the strain on your stock suspension system, and because they work independently they'll help with off-center loads in the truck bed and...
    view full answer...
  • Are SuperSprings SuperSway or Timbren Springs a Better Option 2023 Ford F-350 Dually Reduce Sag?
    The SuperSprings SuperSway Stops # SS65GR are going to be the better option versus the Timbren # TFR350SDJ on your 2023 Ford F-350 Dually with upper overload springs. The Timbren's are designed to leave a 1" gap between the jounce spring and axle. This means you will get 1" of sag before they even begin to work. The SuperSprings are designed to make contact with the upper overload spring at stock height when unloaded. This will better help to reduce sag and the sway you are experiencing.
    view full answer...
  • Recommended Timbren Set for a 2019 Ford F-350 Dually
    Figuring out which Timbren is the best for your set up is really dependent on how much support is needed. With the # TFR350SDJ having the load leveling capacity of 8,600 pounds, it is designed for heavy duty use. Granted the # TFRTT350J is as well, but is is not as heavy duty. So if you were looking for the most heavy duty option, you got the correct part.
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  • Timbren Suspension Enhancement for 2019 Ford F-350
    The Timbren Suspension Enhancement System # TFR350SDJ that fit your 2019 Ford F-350 Super Duty (both 2WD and 4WD) are a great option because they will improve your F-350's handling and performance while offering your suspension the support it needs while you tow. When you are towing or you have a load that causes the rear end of your F-350 to sag a bit, the rear of your truck will disproportionately be affected so that the front of the truck rises. This means your F-350 won't handle as...
    view full answer...
    Image 1 for
  • Recommended Suspension Enhancement for a 2020 Ford F350 FX4
    Though it will depend on how often you tow the trailer, either will definitely help with the squatting you are experiencing. That being said, I prefer the Firestone # F35FV. This is due to them being able to be deflated down to 5 psi when not towing. This will make them nearly, if not completely, unnoticeable when not towing. They can also adjust up to 100 psi giving them very good support when needed. The Timbren # TFR350SDJ will be the more heavy duty option. It is not adjustable, but...
    view full answer...
  • Timbren Suspension Kit that Fits 2022 Ford F350 Dually
    Yes, the Timbren kit part # TFR350SDJ that you referenced is correct for your 2022 Ford F-350 dually.
    view full answer...
  • Available Sway Bars or Suspension Enhancement for 2017 Ford F-350 Super Duty with Truck Bed Camper
    I have a solution to correct the sway and enhance the suspension on your 2017 F-350 Super Duty with the single rear wheels, but the Roadmaster Sway Bar # RM-1139-193 is only designed for use on dually trucks. Because most sway is caused by unevenly distributed weight, there are several different ways you can help stabilize your truck that doesn't use a sway bar. If your truck is loaded more often than not, or will always have a camper attached to the bed the TorkLift StableLoad Suspension...
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  • Best Timbren Suspension Enhancement For 2023 Ford F-350 Towing 5th Wheel Trailer
    There are indeed Timbrens that are confirmed to fit your 2023 Ford F-350 Super Duty to help stabilize and level your truck for towing your 5th wheel trailer. The correct fit for your F-350 is the following: - Timbren Suspension Enhancement System # TFR350SDJ I verified this fit directly with Timbren for you.
    view full answer...
  • Can Timbren Suspension Enhancement System TFR250SDJ be Used on a 2021 Ford F-350
    The difference between the Timbren Suspension Enhancement System part # TFR250SDJ and part # TFR350SDJ is in the part number, the former is for F-250's and the latter is for F-350's. The version for F-350's is taller so they will engage sooner. I don't recommend using the version for F-250's on a F-350 as they won't work as well but they will fit.
    view full answer...
  • Purpose of Shims that Come with Timbren Suspension Enhancement System # TFR350SDJ
    The U-shaped shims of the Timbren Suspension Enhancement System # TFR350SDJ are designed to help provide a flat mounting surface for the bracket and help stabilize it from left to right. If there's any way you can get the dealer to track them down or replace them you really do want to use them.
    view full answer...
  • Timbren Rear Axle Suspension Enhancement For a 2023 Ford F-350 Dually 4x4
    Yes, the Timbren Suspension Enhancement System # TFRTT350J will fit your 2023 Ford F-350 Dually Supercab 4x4. This is their severe service kit which is only recommended to be used on vehicles which will always have a lot of additional weight being carried. The Kit # TFR350SDJ is their standard duty kit if you are only occasionally carrying heavy weights.
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  • Recommended Jounce Stop Helper Spring Option for 2021 Ford F-250 4x4
    There is a slight difference between Timbren helper spring models for the 2021 Ford F-250 which would use part # TFR250SDJ and the F-350 which would use # TFR350SDJ. Timbren makes a great product, but I prefer the SumoSprings # SSR-128-47-2 for trucks with a bump stop perch over the axle or # SSR-129-47-2 for vehicles without the perch. 4x4 vehicles should use the # SSR-128-47-2, but you'll want to check for the bump stop perch to be sure. The SumoSprings are made of a more pliable material...
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  • Do Timbren Suspension Enhancement Fit 2020 Ford F-350 FX4
    Unlike some air bags, the Timbren Suspension Enhancement springs do fit the FX4 models of 2020 Ford F-350, as there is no interference with the suspension. That said, the model you asked about, the Timbren # TFRTT350J, are not the correct kit for a standard truck, as those are designed for severe service vehicles like a tow truck. The correct Timbrens for your 2020 Ford F-350 FX4 for towing campers or hauling equipment are the following: - Timbren Suspension Enhancement System # TFR350SDJ I...
    view full answer...
  • Determining The Correct Timbren SES For A 2020 Ford F-350
    For a 2020 Ford F-350 there's only two options for the rear axle with the only difference being capacity. There's the 8,600lb capacity # TFR350SDJ or 8,000lb capacity # TFRTT350J. For the front there are two different options as well depending on whether or not your F-350 is 2WD or 4WD. For 2WD you'll need the # TFF350SD2 and for 4WD you'll need the # TFF350SDC. We filter suspension enhancement by 2WD and 4WD so if something fits both you'll see it twice in the fitguide for your vehicle...
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  • Recommended Suspension Enhancement For 2022 Ford F-350 Towing 5th Wheel Trailer
    We can get your 2022 Ford F-350 set up with suspension enhancement to beef up the rear suspension when you're towing your 5th wheel trailer, and for that I recommend Timbrens, with the correct fit for your truck being the following: - Timbren Suspension Enhancement System # TFR350SDJ The # TFR350SDJ will help your F-350's handling when you are towing as they will take the brunt of the added weight, engaging when needed to counteract sag and body roll, helping level your truck, stabilize...
    view full answer...
  • Will Timbren Rear Suspension Enhancement TFR350sdj fit 2022 Ford F-350 Dual Rear Wheel?
    They sure will! The Timbren Suspension Enhancement # TFR350SDJ you were looking at will work perfectly on your 2022 Ford F-350 Super Duty Dual Rear Wheel and will provide up to 8600lbs of load leveling support to keep your truck's suspension from sagging because of a heavy payload or heavy trailer. I included a video of the # TFR350SDJ for you to take a look at.
    view full answer...
  • Can Timbrens for a 2019 Ford F-350 Be Used With a Weight Distribution System
    The correct Timbren Suspension Enhancement System for a 2019 Ford F-350 is part # TFR350SDJ which is rated at 8,600 lbs because the other option rated at 8,000 lbs is for service duty applications. There won't be an issues using the Timbrens on a truck with a leveling kit or one that also has a weight distribution system so there should be no worries here. The leveling kit only affects the front suspension. In regards to the weight distribution system, you will want to go through the...
    view full answer...
  • Will Timbrens Work with Airbags on a 2018 Ford F-350
    Yes, the Timbren Suspension Enhancement System part # TFR350SDJ will work with the Firestone Ride-Rite Air Helper Springs part # F2600 on your 2018 Ford F-350 Super Duty. If you are concerned with leaks you may also be interested in the Air Line Service Kit part # F2012 and the Replacement Air Spring part # F6781.
    view full answer...
  • Will The Timbren Jounce Springs Fit With SuperSprings Helper Leaf Springs On a 2022 Ford F-350?
    Yes, the Timbren Suspension Enhancement System # TFR350SDJ can be used with the SuperSprings Custom Suspension Stabilizer and Sway Control Kit # SSA46 on your 2022 Ford F-350. The SuperSprings will mount to your leaf springs while the Timbren replaces the factory jounce spring. They will not interfere with each other.
    view full answer...
  • Can Spacers Be Added To Timbren Service Duty Model for 2020 Ford F-350
    The correct Timbren Suspension Enhancement System for a 2020 Ford F-350 is part # TFRTT350J for service duty applications and part # TFR350SDJ for standard duty applications. The service duty models are smaller in height but more dense so they offer more support. The only time the service duty models should be used is with an in-bed camper in which case the truck would be loaded all the time so your space between the spring and contact point would be little to none. If you want to use...
    view full answer...
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  • Suspension Enhancement Recommendation for 2018 Ford F-350 with Fifth Wheel Rail Kit
    We have suspension enhancement that does fit your 2018 Ford F-350 with an in-bed fifth wheel rail kit installed, but the Firestone kit you mentioned will not fit due to the rail kit. Instead we have the Timbrens part # TFR350SDJ which are a confirmed fit for your truck, will give you the support you want, and are compatible with the in-bed hitch. What's also great about the Timbrens is that they install much easier than air bags and you never have to mess with inflating or deflating bags....
    view full answer...
  • Suspension Enhancement Recommendation for 2017 Ford F-350 with B&W Turnoverball Hitch
    Since the frame mounting space is the same area when installing the Firestone kit part # F2600 and the B and W hitch you have you'd be better off with a Timbren suspension kit part # TFR350SDJ as it would not interfere at all. Some prefer the Timbren kits over the air bag kits as they don't require air pressure maintenance or running any air lines.
    view full answer...
  • Is Timbren Rear Suspension For 2022 Ford F-350 Compatible With TorkLift StableLoad
    Yes, the Timbren Suspension Enhancement System # TFR350SDJ that fits your 2022 Ford F-350 is compatible with the TorkLift StableLoad. The two install completely separately so there won't be any interference between the StableLoad and the # TFR350SDJ.
    view full answer...


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Info for this part was:

Employee Leah B
Edited by:
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Employee Mike L
Expert Research:
Mike L
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Video Edited:
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Employee Chris R
Video Edited:
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Employee Cole B
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