1. Vehicle Suspension
  2. Timbren
  3. Jounce-Style Springs
  4. Standard Duty
  5. Rear Axle Suspension Enhancement
  6. Occasional Towing and Hauling
Timbren Suspension Enhancement System - Rear Axle

Timbren Suspension Enhancement System - Rear Axle

Item # TFR350SDJ
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Timbren Rear Axle Suspension Enhancement - TFR350SDJ
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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. Lowest Prices for the best vehicle suspension from Timbren. Timbren Suspension Enhancement System - Rear Axle part number TFR350SDJ can be ordered online at etrailer.com or call 800-298-8924 for expert service.
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Timbren Vehicle Suspension - TFR350SDJ

  • Timbren
  • Jounce-Style Springs
  • Standard Duty
  • Rear Axle Suspension Enhancement
  • Occasional Towing and Hauling

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.


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
      • Rides just as smoothly when you're not hauling a load
    • 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



TFR350SDJ Installation InstructionsInstallation Details TFR350SDJ Installation instructions

This Product Fits The Following Vehicles

2017 - 2020 Ford F-350 Super Duty 2 Wheel Drive

2017 - 2020 Ford F-350 Super Duty 4 Wheel Drive




Video of Timbren Suspension Enhancement System - Rear Axle

Videos are provided as a guide only. Refer to manufacturer installation instructions and specs for complete information.




Video Transcript for Timbren Front and Rear Suspension Enhancement Systems Review

Speaker 1: Today we're going to be taking a look at the Timbren line of suspension enhancement systems. Any time that we add weight to our vehicle, it's going to put a lot of strain and stress on the suspension, especially if we're towing a heavy camper, trailer, or we have a heavy load in the back.Tends to have the back end squat down, which again, it's going to put that strain and stress on the rear suspension because not only are we asking it to hold up the weight of the vehicle, but everything else that we add on to it. Which that can arise a lot of different issues. The front end is going to be getting pulled off, which will misalign our headlights, and our tires won't have as much contact, so our steering and braking is going to be diminished.But tat;s where timbrens are going to come into play. They're going to provide us that extra support so that when we do have those heavy loads, the back end doesn't sag down quite as much, and it's not putting so much stress on the back end. By doing that, the front end's not going to rise up, which means our headlights will be in line and our tires will have the correct amount of contact and pressure, so our braking and steering isn't affected.

And they're going to do that all while making our ride more comfortable with that extra load.Our timbrens are going to provide us the support we need by replacing our factory jump stops and mounting in between the frame and the axle. Now, yours may look different, so you want to double check inaudible 00:01:20 fit guide for your specific application.Now, each one of our timbrens is going to feature a steel bracket. They're all going to have black, powder coat finish on them to resist that rust and corrosion or any other kind of chemicals that may be on the road. They're going to have a hollow, rubber ayon 00:01:36 spring that's going to take a lot of that pressure and strain off of the rear suspension.Whenever we do load our vehicle down, the space between our frame and our axle is going to get smaller. That's where our spring is going to make contact with the axle, and it's going to start compressing.

Now, they are progressively rated, so if we have a small load or a light load, it's going to have a little soft engagement. But the further it gets compressed, the harder and stiffer it becomes, giving us the support we need with those heavy loads.And since they are rubber, they're going to have a lot of give to them, which means they're going to give us the support we need. But at the same time, they're going to give us some more cushion and absorb some of the road shock as we drive. And since the rear ones here aren't in constant contact with our aXle, it is going to provide us the same ride quality when it's unloaded.Our timbrens are going to work independently from each other from side to side. That way, if we have an off center load, it will help compensate for that, but at the same time, if we take an evasive maneuver or a really sharp turn, this is going to help reduce that body roll and some of that sway feeling that we get going on when we have a lot of added weight.Our timbrens for the rear are going to be a good enhancement for any time you're going to be adding weight to the back of your vehicle, whether it be a heavy trailer, a large load in the back or any other situation where you're adding a lot of weight to the back of your vehicle.Now, timbrens on the front are going to be a little bit different.

They're going to provide us that load-leveling support and make sure the front end doesn't get pushed down too far. However, these typically are going to be in contact all the time, which means it's going to give us that support and help reduce on that body roll all the time, all while absorbing that road shock, giving us a smoother ride.Now, some situations where you'd want that extra support on the front of the vehicle to keep it from getting pushed down too much would be if you have a snow plow or winch, if you flat-tow your vehicle, or if you have any other heavy accessory on the front. This is going to make sure that front end stays where it should be, and again, making sure our tires, braking and steering acts how they should.When comparing the timbrens to other suspension enhancement options like airbags, these are going to be a lot easier to install because we're not going to have to worry about running lines, maintaining air pressure, putting in switches or compressors or any of that. Once these are installed, these are going to be completely maintenance free. However, airbags are going to provide us with a lot more adjustability, whereas our timbrens are not going to have that.That'll finish up your look at the timbrens suspension enhancement systems..


Customer Reviews

Timbren Suspension Enhancement System - Rear Axle - TFR350SDJ

Average Customer Rating:  4.7 out of 5 stars   (1927 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.

- TFR350SDJ
by:
2017 Ford F-350 Super Duty

Easy install on 2017 Ford F-350. For a keystone Raptor RV with over 3500 Lbs tounge weight 488610



- TFR350SDJ
by:
2018 Ford F-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. 520123


Comments
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!
Andrew - 06/10/2019

56402

- TFR350SDJ
by:

They have performed as described. When hooked to my gooseneck trailer truck squat is minimal, and best part is hassle free install and forget. I have been driving empty and unhooked without any notice to ride difference unless I hit a bad pothole. I would recommend them to anyone looking into option of airbags. 573990



- TFR350SDJ
by:
2018 Ford F-350 Super Duty

Same great product and same great service. Hard to beat their prices too. 720485



- TFR350SDJ
by:

Easy install and handle the load great 704378



- TFR350SDJ
by:

Excellent company great customer servic e. 694410



- TFR350SDJ
by:
2017 Ford F-350 Super Duty

Great product. I tow a 43 1/2 foot 5th Wheel behind my 2017 F350 which before I stalling these helper spring the truck bounced the front. After the quick installation the truck stays level without the annoying bounce! 678805



- TFR350SDJ
by:

Just received the bump stops as I call them. I bought these in particular because a family member has them installed in his truck. He says they do exactly what he wanted and made a vast improvement on his trailering capacity and gandering. I will definitely review them once I have them installed. Looking for nothing but the best results. 628066



- TFR350SDJ
by:
2018 Ford F-350 Super Duty

Fits perfect. No slip. Quality prod uct. 606891



- TFR350SDJ
by:
2018 Ford F-350 Super Duty

Easy install. Simply awesome. Work perfectly 606762



- TFR350SDJ
by:
2017 Ford F-350 Super Duty

2017 F350 Start to finish I was done in just over 30minutes. I did need to Jack up the truck at the back hitch for the clearance needed to put in the stabilizers only because the bolts are a fixed item on the truck. When installed i have about 1/2 inch from the stops. I pull a 37 ft 5th wheel with 3 slides. This should give me the level ride. 579022



- TFR350SDJ
by:
Ford F-250 Super Duty

I bought a set for my F250 and like them so much that I bought a set for my F350. It prevents the vehicle from sagging in the rear when hauling towing heavy objects. Makes for a smoother and more stable riding experience. 569245



- TNRTTNA
by:

Review from a similar Timbren Aeon Spring System in Vehicle Suspension


Makes a huge difference in carrying heavy loads. I could tell an immediate difference when I had a full bed, gooseneck load, or a bumper pull load. Highly recommended. I considered air suspension, but did not want to tackle that installation. Literally can install this with a torque wrench and impact wrench. 725228



- TDF25004B
by:

Review from a similar Timbren Aeon Spring System in Vehicle Suspension


Bought these because I just put a plow on my truck and I didn't want to mess with air bags or heavy duty springs that would raise the front of my truck. These suspension enhansment bumpers are extremely easy to install, fit perfectly and do exactly as they advertise.. couldn't be happier 726518



- TFR1504D
by:

Review from a similar Timbren Aeon Spring System in Vehicle Suspension


This was so easy to install, you DO NOT need to take rear tires off.. 60 Minute install. I went without the additional spacer to allow for a little nicer ride when empty. Very well made 730169



- THROD2
by:

Review from a similar Timbren Aeon Spring System in Vehicle Suspension


The product first arrived in a damaged box with one of the washers missing, but ETrailer did resupply that. The hardest part was finding a shop able (needs the right tools to depress coil springs) and willing (a potential liability issue messing with suspension) to replace it for a reasonable cost. Eventually a local tire shop agreed to. This was for a 2014 Honda Odyssey, especially for pulling a pop-up. Took two camping trips last summer, one before and one after installation, and I have been pleased with the added stiffness in the rear suspension. It made about 1 to 1.5 inch of difference in resting position when fully loaded and towing and has helped smooth out bumps and humps in the road - both when towing and not. 589641


Comments
Took a couple more trips this year, and its all still working good, but I found out there still is a limit to how much weight you can pack on the rear axle. Dont recommend using a double hitch extender for bike rack plus towing because it spans the tongue weight too great of a distance from the van and gets too close to the ground. This is as much a comment on not overloading the suspension as it is on the DrawTite hitch I got on etrailer.
Dan O - 12/11/2019

63761

- TDR1500DS
by:

Review from a similar Timbren Aeon Spring System in Vehicle Suspension


Works perfectly, easy install. Will be making another purchase for other trucks now that we were able to see how well they worked. 702944



- TTORTUN4
by:

Review from a similar Timbren Aeon Spring System in Vehicle Suspension


I recently ordered and installed this suspension enhancement for my 2017 Nissan Titan SV 2WD, Crew Cab. I will be road testing it next week with a heavy duty 20' flat trailer, carrying a 2,800 lb car, 500 lb 4 wheeler and misc items for an estimated total of near 6.5-7k lbs of trailer weight. In addition, I might be carrying a 450 lb go-kart in the truck bed. I feel this will be a good test of the products' capability and performance. Approximately 2 weeks ago, I towed an 8.5' x 20' cargo trailer weighing out at nearly 9k lbs on the same 500 mile trip. For that trip, I had the stock suspension setup and used a weight distribution (WD) system. The trip went smoothly, but I'm hoping that this suspension enhancement will eliminate the need to go through the WD hookup process. A followup review to come. I've given this a 5 star review due to the excellent customer service I received from Ashley. I was traveling back down to Florida from up north and had questions regarding compatibility with my truck. She called the company, Timbren, to verify that it would work and answered all my questions, since I was driving at the time. She even pushed the order through quickly and got it out that same day. I was amazed when I received it yesterday, less than 2 days after I ordered it and installed it in less than an hour. This is truly an example of the excellent level of customer care that etrailer provides its patrons and exactly why they are my first choice for all my trailering needs. Thank you. 725798



- TGMRCK25D
by:

Review from a similar Timbren Aeon Spring System in Vehicle Suspension


These are one of the best products ever! Simple, effective and a reasonable price. They are carefree, invisible when unloaded and very easy to install yourself. I tow a 37ft 12,500lb 5th wheel with my 2018 2500HD. Though my truck already handled the load well, these make the ride more stable and controlled. Lifts the rear up about 1.5 inches as well as keeps things centered from left to right. What's most important when towing is keeping the steer axle on the road. Though I recommend them for any towing configuration; for those of you that push the limits, these are a must have. Brilliant product! Thanks Timbren for the magic bullet! 708124



- TDF25004E
by:

Review from a similar Timbren Aeon Spring System in Vehicle Suspension


A nice product that you don’t even noti ce. 620449



- TFR1504D
by:

Review from a similar Timbren Aeon Spring System in Vehicle Suspension


The product works as described but when I'm driving empty on any road that may be rough my truck tends to bottom out on the jounces causing a rough ride 692250



- TFR1504D
by:

Review from a similar Timbren Aeon Spring System in Vehicle Suspension


These work as advertised and do a great job of preventing the back end of the truck from dropping too low when hauling or towing. When pulling our 8000# trailer the truck ride is relatively level. I would prefer they were maybe a 1/2" to 1" shorter so the unloaded suspension would have a bit more travel. With a cap on the truck there is less than a couple of inches of travel before the stops are hit and it does make the ride more harsh. I knew this would be an issue with these. They are considerably less costly than airbags with zero maintenance concerns. 611406



- TFRTT1504E
by:

Review from a similar Timbren Aeon Spring System in Vehicle Suspension


I will write a review as soon as they are installed. They came through as advertised the quality was above my expectation. I am looking forward to testing them with my boat in tow. 578110



- TFR350SDF
by:

Review from a similar Timbren Aeon Spring System in Vehicle Suspension


Towing our 15 thousand pound fifth wheel is way better since i installed these. Highly recommend over the the ride. Easy install. Fuctional affordable. Great product 500554



- TTORSEQ
by:

Review from a similar Timbren Aeon Spring System in Vehicle Suspension


I am dealing with Timbren. The washer for mounting the rubber spring to the mounting plate clearance hole is too small for the bolt diameter. The washer is not something you can get out without damaging in my opinion. The bolt also will not thread completely into the mounting plate because of poor threads ( not tapped correctly). Galling of bolt if you try to tighten. Very poor QC or inspection at Timbren or wherever. Once again, working eith Timbren on this. Maybe you should check you kits at etrailer!! 704185


Comments
I pulled the kits we have in stock and they check out fine. The washer inside the spring had the same diameter as the spring for the bolt. Could you send in a photo of your kit?
-- Victoria B - 09/25/2019

61509
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Ask the Experts about this Timbren Vehicle Suspension

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    First of all, thank you for your service. Unfortunately at this time we don't offer a military discount, but we do have free shipping most of the time on orders like this one. To confirm your fit, we have two sets of jounce springs available from Timbren that are confirmed to fit your 2017 Ford F-350 Super Duty. The Timbren Suspension Enhancement System - Rear Axle # TFRTT350J with a weight rating of 8,000 lbs and the # TFR350SDJ rated for 8,600 lbs. These springs will have a slightly...
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    The Timbren Suspension Enhancement System part # TFR350SDJ is correct for your 2017 Ford F-350 whereas the Timbren Suspension Enhancement System part # TFR250SDJ is for a 2017-2019 Ford F-250. The brackets on both of these systems are the same so you can use one on the other but the F-250 kit has a 4-1/2" tall spring whereas the F-350 kit has a 5-3/16" tall spring. Therefore, the F-250 kit will not engage as soon as the F-350 kit when used on a F-350. The later engagement will equate to...
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  • Best Timbren Suspension Enhancement for 2019 Ford F-350 Super Duty Towing Camper Trailer
    The best Timbren Suspension Enhancement System fory our 2019 Ford F-350 is the Timbren # TFR350SDJ which are designed with recreational towing in mind, as opposed to the kits which are meant to be used with more heavy-duty work trucks. The Timbren # TFR350SDJ that fit your '19 F-350 are double-convoluted, which means they have more cushioning and give than the single-convoluted Timbrens like # TFRTT350J. This suspension enhancement system is going to improve the handling of your...
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    For the rear suspension of your 2019 Ford F-350 there are two different Timbren suspension kits available. The heavy duty version part # TFRTT350J and the lighter duty # TFR350SDJ. The HD version is basically for severe duty applications like tow trucks or other applications where the truck will be basically at capacity at all times. If your application is more like recreational towing and wouldn't be at the capacity all the time the lighter duty option is the way to go.
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    For your 2017 Ford F-350, you have two options. You can go with either the Timbren Suspension Enhancement System part # TFR350SDJ or part # TFRTT350J. I recommend using the Timbren Suspension Enhancement System part # TFR350SDJ as these aeon springs are rated for a higher weight capacity and are made of a thicker rubber. The hollow rubber springs sit above the rear axle below the frame to help stabilize and provide up to 8,600 lbs of load support capacity. They are designed to provide...
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  • Does Timbren Kit # TFR350SDJ Fit 2017 Ford F-350
    The dimensions of the Timbren kit part # TFR350SDJ you referenced are 8-1/2 inches wide by 10-1/2 inches tall by 6 inch diameter. This is a confirmed fit for your 2017 Ford F-350 FX4 and does not require you to use any type of spacers.
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  • Dimensions of Timbren Suspension Enhancement Spring for a 2018 Ford F-350
    From the top of the bracket to the bottom of the rubber spring the # TFR350SDJ Timbrens measure about 7-1/2 inches. When installed you ideally want about a 1/2 inch to an inch of space between the Timbren and its contact point. However, to install them you will be removing your bump stop. So make sure you measure where the bump stop mounts.
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    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...
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  • Suspension Enhancement Recommendation for 2019 Ford F-350 with Factory Rail Kit
    For rear suspension enhancement that is a confirmed fit for your 2019 Ford F-350 and is also compatible with the in-bed factory rail kit your truck has we have the Timbren kit part # TFR350SDJ which would fit and work well. This gives you the rear suspension support you'll need while towing and unlike air bag kits you'd never have to worry about air leaks or maintaining air pressure either. It's a much simpler solution that gives the same support. Since it attaches to the bottom of the...
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  • Recommended Timbren Suspension Enhancement and 5th Wheel Hitch for 2017 Ford F-350 4x4 Short Bed
    For your 2017 Ford F-350 4x4 short box, the Timbren Suspension Enhancement System - Rear Axle # TFR350SDJ will be a confirmed fit for your truck. These hollow rubber springs sit above the axle to help stabilize and level your truck. These springs work independently to compensate for off-center loads and reduce body roll. They are a great compliment to a 5th wheel hitch. If you haven't yet selected a 5th wheel hitch, I recommend the Reese Quick-Install Custom Base Rails and Outboard...
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    For suspension enhancement for your 2019 Ford F-350 I recommend the Timbren kit part # TFR350SDJ. What's great about the Timbren kits is that they do not require any air pressure maintenance or running any air lines and you get the same suspension support as the air bag kit. For a hitch you'd want the B and W Companion Fixed part # BWRVK3300 if you have a long bed truck or if you have a short bed you'd want the slider version part # BWRVK3370 which can slide back to give you turning...
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  • 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.
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  • Suspension Enhancement Recommendation for 2019 Ford F-350 Dually, Diesel with OEM 5th Wheel Rails
    I do have a great suspension enhancement kit I can recommend for your 2019 Ford F-350 diesel, DRW, with the factory fifth wheel rail kit, but your vehicle does not have any air bag style kits available. The best option is the Timbren kit part # TFR350SDJ. This gives you the same support as an air bag kit but it installs much easier than an air bag kit and does not ever require any maintenance so it's really a great option. Air bag kits require you to maintain air pressure and have a much...
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  • Timbren Suspension Enhancement Recommendation for 2019 Ford F-350
    For your 2019 Ford F-350 the Timbren kit you need is the part # TFR350SDJ. This will help support the rear suspension of your truck when you are towing your fifth wheel trailer. I really like the Timbren kits over the air bag style kits as they are much easier to install and never require you to maintain air pressure or worry about air leaks. Also, since these kits install to the bottom of the vehicle frame they don't interfere with fifth wheel rails.
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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....
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  • Are Timbren Spacers Required For A Leveling Kit On A 2020 Ford F-350
    If the rear suspension of your 2020 Ford F-350 is not lifted, you will not use the Timbren 1" Spacer # A25723-90AH00 when you install the Timbren Suspension Enhancement System part # TFR350SDJ A point to note however is that if the leveling kit does lift the rear of the truck then you will want to install increments of the part # A25723-90AH00 (1") and part # TA25722-90P00 (1/2") until there is 1/2" to 1" of space between the bottom of the timbren spring to the top of the contact point...
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  • 2020 Ford F-350 Super Duty With 4 Wheel Drive and Rear Sag Timbren Recommendation
    I recommend the Timbren Suspension Enhancement System - Rear Axle part # TFR350SDJ for the 2020 Ford F-350 Super Duty with 4 wheel drive. The Timbrens will do a wonderful job of keeping the load level and fixing the rear sag. They also act a shock absorber to absorb the bumps in the rode to create a more comfortable ride. I have attached a video for your reference.
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  • 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.
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Info for this part was:

Edited by:
Leah B
Expert Research:
Jameson C
Video Edited:
Jacob T
Installed by:
Cole B
Installed by:
Robert C
Updated by:
Mary E
Updated by:
Sarah W
Video by:
Jonathan Y
Written by:
Anna W

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