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  1. Vehicle Suspension
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  3. Jounce-Style Springs
  4. Rear Axle Suspension Enhancement
  5. Extra Heavy Duty
Timbren Rear Suspension Enhancement System
Timbren

Timbren Rear Suspension Enhancement System

Part Number: TFR350SDF
In Stock
$398.07
Retail:$468.32
You Save: $70.25
Vehicle Suspension

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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. Great Prices for the best vehicle suspension from Timbren. Timbren Rear Suspension Enhancement System part number TFR350SDF can be ordered online at etrailer.com or call 1-800-940-8924 for expert service.
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Timbren Vehicle Suspension - TFR350SDF

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

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
    • Becomes more rigid as more weight is added
      • Increases stability - providing great performance while hauling heavy loads
      • Reduces vehicle sag
  • Works independently - side-to-side
    • Helps compensate for off-center loads
    • Reduces body roll when swerving and turning corners
  • Acts as shock absorbers, taking the brunt of bumps and rough roads
    • Extends the life of your vehicle's suspension


Specs:

  • Includes 2 Aeon hollow rubber springs, vehicle-specific brackets and hardware for simple installation
    • Replaces axle bump stops on frame
    • No drilling required
  • Capacity: 8,600 lbs
    • Do not exceed the vehicle's weight-carrying capacity
  • Designed to work with a suspension system that is in good working order
  • Limited 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.



FR350SDF - Rear Suspension Enhancement System with Aeon Hollow Rubber Springs by Timbren

Installation Details TFR350SDF Installation instructions

This Product Fits The Following Vehicles




Customer Satisfaction Score:


Customer Reviews

Timbren Rear Suspension Enhancement System - TFR350SDF

Average Customer Rating:  4.7 out of 5 stars   (6312 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:

One year later and I still love them. Fifth wheel towing is so pleasant. Super stable, and no squat. I love that I don’t need to worry about air leaks like I did with the airbags these replaced.



by:
2016 Ford F-350 Super Duty

Installed these Timbrens on my 2016 F350 to enhance the stability of my truck for a slide in truck camper. Have loved the results of them. They have noticeably helped leveling the truck/camper combo, and sway while driving. When the camper is off the truck these are not engaged. Have had no issues and would recommend them.

Jim

4/1/2024

As expected. No issues and still performing perfectly.



by:

6/23/24 Great product, very easy to install. The hardest part of the job was getting the factory bump stops off. Just an FYI, keep a cordless sawzall close by, I had to cut the bolts because of the rust. After that the actual was
Eezy Peezy, Very happy with the result after loading up my 35ft 5th wheel.
Worth every penny.



by:

We got these Timbrens for our truck that hauls a truck camper. Took the sway out of driving

Allen

4/1/2024

The extreme timbrens are definitely extreme! We should have purchased the standard timbrens as the extreme one shake our teeth and our truck with the camper on it. They are so stiff that they don’t provide any suspension to the rear axle. It more or less a dead or fixed axle. I’d prefer and recommend the standard timbrens!



by:

I won’t have a truck without this product. We haul a lot of cows and hay with an early 1999 F350. This product makes an instant difference in handling with a heavy load. So much so that I was asked to hold money out of an employee check to order a set for his personal truck. Install was easy. Holding up well after two years of abuse. Could not recommend more.



by:

I have had airbags before and debated on trying Timbren's for my latest dually instead. I have not been disappointed. I haul both a Lance cab over camper and a gooseneck trailer with a backhoe and these Timbren's keep the truck level and balanced. I would recommend them for the price savings and ease of install over airbags. I have a friend with a single rear wheel F350 and he has the same good results hauling as well.



by:
Ford F-350 Super Duty

I've had the Timbrens installed for about a year now and can report that they have done exactly what I wanted from them. The install was pretty easy (did it in the driveway using my creeper).
My F350 was squatting a bit from the 3000# pin weight and I wanted to reduce that. Unloaded I can't tell they are there unless I hit a pretty big bump and when we're hitched they eliminate most of the squat and the truck is now pretty level when towing. I was thinking about installing air bags but went this route since it was simple and cost less. It's a great product!
I've read some complaints about a rough ride when unloaded and I think that's due to not getting the unloaded gap right during installation.
Submitting an "Installed" pic.



by:

Exactly as advertised

Thomas

6/16/2024

They were just what I needed when towing my 5th wheel.



by:
2016 Ford F-350 Super Duty

The Timbrens are great. I have not had the truck with a full load yet but I anticipate they will help bring the truck back to level. The install went well but we were not able to use the additional spacer even with the longer bolts. We were not able to put enough pressure on the bolt to get the nut started. I don’t believe I will need the spacers so it should be ok. The directions didn’t include the amount of torque that was needed so I sent e-trailer an email. They checked with Timbren and the torque is 1/4 turn after they are tight. Ive attached some pictures of the completed install.



by:

Hi quality parts but worthless instructions. No sequence of assembly and the orientation of the brackets are totally wrong in the illustration. You should pre assemble the bracket to the rubber bumper then install that in the truck frame.

Az

8/3/2023

Just as well as it did on day one. I am so happy with it that recommended it to my son who wants to install airbags. Now he is thinking about it. He drives a 2016 F250.



by:
2015 Ford F-350 Super Duty

My 2015 F-350 dually would always squat when I’d hook up my fifth wheel.
Towed it for the first time since purchase and install and the truck is nice and level. The ride is better also and after driving a bit without the camper I don’t really notice them. I love the simplicity of these over airbags and imagine they won’t be needing any maintenance or replacement anytime soon. Great simple solution. Not so easy for an old fat guy to install
laying under the truck in the driveway but I managed!

John R.

10/13/2018

They work. It is nice towing nice and level now. The ride with the load on is good and smooth and very stable. I am still very happy I went them. Put them on and forget about them, no maintenance and no worries.



by:
2016 Ford F-350 Super Duty

Installation was a breeze on my 2016 F-350 sbcc 4x4 thanks to the provided videos (didn't even need to jack up the truck). It has performed as advertised towing a 16,000 lb 5th wheel, no squat, rides great on most surfaces and handles curves with little effort. The frosting on the cake is the fact that they require no maintenance! I will never buy another set of air bags again!

Scott S.

6/13/2019

Just came back from a 5,000 mile trip through 6 states towing a 16,000 5th wheel. We encountered everything from dirt roads to major city interstates. The Timbrens performed flawlessly as advertised.



by:

Works Great and easy installation



by:

Although these timbrens worked better than the standard suspension I ultimately had to remove them and replace them with airbags which worked substantially better. They were relatively easy to install. I didn't see any issues with the quality of the product I just don't think it was sufficient enough to provide the additional suspension support for my heavy camper. The airbags work much better. My timbrens have spent now most of their time in a box in my garage still in near new condition.



by:

Great product and installs easily. I did not use the spacer, so this allows the stock suspension about 1-1/2" of travel before contacting the Timbren units. I tow a 16K fifth wheel and the Timbren's handle this load very well. You can see the compression marking on the lower side of the Timbren when the trailer is hooked up to the truck. Just enough contact to keep the truck at a level stance. My stock "bump stops" were starting to fall apart from age and wear/tear. These Timbrens now add an extra level of suspension that makes the truck feel much more in control when pulling the fifth wheel.



by:
2012 Ford F-350 Super Duty

I placed these on my 2012 F-350 SRW as an alternative to putting air bags on due to the price difference. The timbrens have worked well when pulling but has taken the rough ride of a one ton truck and made it worse under normal driving conditions. These don't allow for much travel of the suspension when going down the road and hitting normal bumps. If you're considering these or airbags spend the extra money on airbags and be done once and for all.



by:
2016 Ford F-350 Super Duty

I drive a F350 Super Duty, 2016, Crew cab, short bed. I pull a 38 FT, 16,500 GVWR goose neck 3 horse with living quarters. I was going to put in air bags as I was sick of slamming into my bump stops and my headlights aiming to the sky; oddly the trailer towed great except for those two items. I had thought about the Timbren's but was hesitant. After my trailer guys at Triple C in Watervliet, MI; great guys, told me they had stopped putting in air bags, but now suggested the Timbren enhancement system, I thought I would try it.
GREAT PRODUCT; cheaper than airbags, easier to install, no maintenance and works great. I put them and immediately drove the horses from Chicago to West Palm with no problems. Truck is almost perfectly level now. I did not have one of the shuddering slamming events I typically get 3 of in Indiana alone. I would strongly recommend.

Also; he service was great. The online ordering would have gotten it to me late, but I called and LaceyG was a huge help in getting it with that days shipments. She was also a big help on finalizing my decision.



by:
2015 Ford Fusion

I have installed and used the Timbrens on my 2015 F350 dually with my 5th wheel Keystone Fusion RV for a year now. i have to say that the Timrens are not only easy to install but make the ride of my truck excellent not only on the highway but back roads as well that includes very twisty turns. Timbrens keep my truck level and i don't have to ever worry about airbag air pressure. i have owned airbags before and never again will i ever buy or use them. When you don't have a load in the bed or your RV hooked up the Timbrens ride above then axles.. Best investment for towing period!



by:
2008 Ford F-350 Super Duty

i have finally hooked up after installing Timbren rear suspension system it ended up being what i was hoping for took the sag out took the sway out of driving when pulling loaded trailers i have been missing my dually this system has sure helped with my 2008 f350 single wheeled pickup a lot cheaper than air bags did not give an excellent review because have not pulled enough to see how the system holds up



by:
2012 Ford F-350 Super Duty

This system worked very well. The Timbren system brought the truck back to level and also help the sway of the truck. This suspension Enhancement system went on a 2012 Ford F350 after adding a truck camper of 4000lbs.I am glad I went this way instead of air bags.



by:

Have not towed our fifth wheel with these installed yet which was the main reason for the purchase. Towed a dump trailer and the added stability was definitely noted. With my truck loaded as usual with several hundreds of pounds of gear (two tool boxes, wood dunnage for leveling camper, ladder, B&W Companion fifth wheel hitch/Turnover ball, floor jack, tire inflator, jumper cables, screw gun kit, two traffic cones, brooms, squeegee - you get the idea!) the Timbrens are in contact with the bumper bars on the axle setup. Was hoping that the springs would not be in contact during normal daily driving but the stiffening of the ride is more than tolerable. I did not install the additional spacers as I could tell it would just add more weight to the Timbrens when loaded for daily driving. I'm sure if my truck bed was truly empty I would be off of the Timbrens.

As for the five star rating without using these for the primary purpose I must say that is all on etrailer. They were great to deal with, answered a question I had very well and the shipping was extremely fast.



by:

Easy install, and they do a fantastic job when pulling our 17k 5th wheel. Less than 1/2” of squat with them. They do cause a little stiffer ride, when empty, because the difference between the bump stop and Tembren is only about 1/2”. But well worth it, when they are doing their job while pulling. Well worth the money and would definitely recommend.



by:
2013 Ford F-350 Super Duty

No complaints with Etrailer customer service and delivery time. I thought I would need the spacer, and while putting everything together to check the fit, the bolts were not long enough. I drove to hardware stores for longer bolts. Well I did not need the spacer, and wasted some time. The stock stops were a bitch to take off. The only method that worked was tie wrapping pliers to the stops to grip in order to turn the bolts. The Timbren stops went on very easy. I hooked up my trailer for a drive. The truck does not sag and does not bump up and down as before. I drive a 2013 Ford F-350 single axle. I took my wife for a ride with out the trailer and she feel the stiffness of the Timbren, but nothing uncomfortable.



by:
Ford F-350 Super Duty

This is my second set of Timbren SES, I had purchased this product previously ,for a F350 pulling a Sundowner Gooseneck Trailer. Updated truck, had to have another set.....NO trailer sway-sagging, excellent product, easy installation too. I would recommend this!



by:
2016 Ford F-250 Super Duty

Bought the Timbren Susp. System for a 2015 Ford F-350 Super Duty used to pull a 16,000# fifth wheel trailer. Had this on my former 2012 Ford F-250 Super Duty used to pull a 12,000# fifth wheel and the Timbren Susp. System kept the rear from sagging when the trailer was loaded. Keeping the truck level really made the truck more stable and enjoyable to drive when pulling the fifth wheel.


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See what our Experts say about this Timbren Vehicle Suspension

  • Rear Suspension Enhancement For A 2011 Ford F-250 Super Duty
    For your 2011 For F-250 Super Duty if you are adding the Timbrens I would stay with your factory 2" block. If you install Timbren Rear Suspension Enhancement System Item # TFR350SDF you can add 1 or 2 of the Timbren 1" Spacer For Raised Frame Vehicles - 3/8" Bushing Item # A25723-90AH00 but it will require a longer bolt than what comes in the kit. This allows you to install the Timbrens and get the extra 2". Keep in mind the Timbrens are not going to give you any adjustability, your vehicle...
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  • Which Timbren Rear Suspension Enhancement To Use On A 2008 Ford F-250
    I recommend going with the Timbren Rear Suspension Enhancement System Item # TFR250SDF for your 2008 Ford F-250. These are designed to support the weight in the back of the truck. Since your hauling a 5th wheel and the hitch weight is only 1430lbs the Timbren Rear Suspension Enhancement System Item # TFR350SDF would be overkill.
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  • Suspension Enhancement Options For A Lifted 2006 Ford F-350 Pulling A 10,000 lb Trailer
    Hello Stephen, thanks for reaching out. The RoadActive Suspension Custom Leaf Spring Enhancement Kit # RAS3611-HD will certainly help with your sway issues. It will help to level your ride which will in turn improve handling and reduce sway. I see that you also ordered the Timbren Rear Suspension Enhancement System # TFR350SDF which is also a good choice. These will add quite a bit of additional support when you are hauling your trailer. They will also reduce sagging and help with stability...
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  • Is the Timbren Suspension System or TorkLift the Better Option for a 2015 Ford F-350
    I recommend going with the Timbren Rear Suspension Enhancement System # TFR350SDF. Even though the TorkLift StableLoad Suspension Upgrade for Upper Overload Springs # TLA7200 that you referenced are a good option, the Timbren system does a better job at stabilizing the weight. The TorkLift option will activate your leaf springs much sooner when they are under a heavy load, but the Timbren option provides additional support for your lift springs and takes on the brunt of bumps and rough...
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  • Which Timbren Kit HD or Lighter Duty for 2016 Ford F-350 That Hauls Campers Frequently
    The difference in harshness between the Timbren kits part # TFR350SDF and # TFRTT350F would be very noticeable. Especially when unloaded. Your truck is already going to have a rough ride as that is the nature of 1 ton trucks but the 12k Timbren kit will make for a very harsh ride when unloaded. I really wouldn't recommend that unless the truck is going to be loaded to near it's max capacity most of the time it will be on the road. For what you are looking to do I would go with the lower...
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  • Compatibility of B&W Gooseneck Hitch and Timbren Springs for 2008 Ford F-250
    The correct rear axle Timbren Jounce Spring kit for your 2008 Ford F-250 4X4 is part # TFR250SDF. The kit # TFR350SDF you referenced fits the F-350. Any suspension kit can potentially have interference with either a 5th wheel or goose neck hitch if the two items require the same mounting points on the truck's frame. You can use the Timbren installation instructions I have linked to see where these jounce springs attach (in place of the factory bump stops) and compare that to your hitch...
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  • Recommended Suspension Enhancement System for a 2012 Ford F-350 4x4 with Max Tow Weight of 15,500 LB
    I recommend going with the Timbren rear suspension system # TFR350SDF because it will keep your 2012 Ford F-350 4x4 more level and improve driving performance. The Timbren springs won't compress as much and have a higher weight rating. I think you will be very pleased with the Timbren system because they are designed to work with heavy loads. The weight capacity is 8,600 pounds and will be more than enough for your setup. The reason I wouldn't choose the SumoSprings is because they have...
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  • Differences Between Air Springs and Jounce Style Springs
    The Firestone Ride-Rite Air Helper Springs # F2550 for your 2011 Ford F-350 maintain an even load distribution using air pressure. The Firestone air bags' air pressure is adjusted for the weight of each individual load. This system includes air lines that run from the air bag to an easily accessible point on your vehicle's bumper. These air bags can be adjusted independently of each other for off-center loads. This system is dependent on an air tank of some kind, such as those found at...
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  • Recommended Jounce Enhancement Kit For A 2016 Ford F-350 Towing A 13,0000 Pound 5th Wheel
    If you are not wanting to go with an air bag kit, you will have two options available. The first, and the most heavy duty, is the Timbren Rear Suspension Enhancement System # TFR350SDF. This will not affect the ride height and will definitely shore up the suspension when under load. However, as these are rated up to 8,600 pounds of capacity, they are going to be pretty stiff and will affect your ride quality fairly severely when not under load. These do a great job when they are under load...
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  • Comparison of Jounce-Style or Air Bag Suspension Enhancement
    Jounce-style helper springs are easier to install than air bags since they're less parts involved. Also, once they are installed you basically leave them alone. Air bags need to have the air pressure monitored and changed according to the load that's being carrier. The jounce-style will not impact the ride quality unless there is load present. The benefit of the air bags is that you can adjust them to your liking when you need to. If the weight in your truck varies on a regular basis...
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  • What is Needed to Install the Timbren Rear Suspension Enhancement System on a 2015 Ford F-350
    The Timbren Rear Suspension Enhancement System part # TFR350SDF comes with everything you will need parts wise to install on your 2015 Ford F-350. The only thing that you will need that does not come with the kit is common tools such as a ratchet, socket set, and ratchet extension. As you can see in the attached install video, the process is very simple even for the most novice of installers.
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  • Timbren or Firestone Suspension Enhancement Recommendation for a 2006 Ford F-350 Dually Crew Cab
    I think you are looking at all the right information. I agree with you that for your situation a suspension enhancement system would help with the sag you are experiencing. Keep in mind that no suspension enhancement product is going to increase the weight capacity of your truck, they are designed to help the OEM suspension to handle loads within their limits better and provide a longer service life for the vehicle suspension. I have a Firestone Work Rite Kit (not available for your truck)...
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  • Compatibility of Timbren Jounce Spring Kit # TFR350SDF with 2008 F350 with B&W Turnover Hitch
    I contacted the technical staff at B and W to confirm compatibility of their Companion 5th wheel hitch with aftermarket rear suspension kits such as the Timbren Jounce Spring Kit # TFR350SDF in your 2008 F350. My contact there advised that a jounce spring like this kit will not interfere with the hitch installation. This kit installs in place of the factory jounce bumper. Please refer to the attached photo which shows the mounting location. Hardware is included. Advantages of this type...
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    Image 1 for
  • Weight Distribution System Recommendation for a 2005 Toyota Highlander to Help with Squat
    Actually what you would want is a weight distribution system. Using a weight-distribution system helps to ensure a smooth, level ride while also allowing you to tow the maximum capacity allowed by your hitch. Weight-distribution systems use spring bars to help combat the problems that often occur with standard hitch systems. Adding spring bars to your towing setup applies leverage to either side of your system, which transfers the load that is pushing down on the rear of your vehicle...
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  • Suspension Enhancement Recommendation for a 2012 Ford F-350 with Reese Underbed 5th Wheel Kit
    The brackets that attach to the frame on the Reese installation kit # RP30126 attach to the outside of the frame rails on the truck. Any suspension kit that installs on the outside of the frame rails as well cannot be used. On Air Lift kit, # AL57396, if you look at the instructions I have linked, you will see that the brackets install on the inside of the frame rails. However, you must look closely at the instructions and compare them to the brackets on your truck to determine if there...
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  • Recommendation On A 5th Wheel Hitch and Suspension Enhancement on a 2015 Ford F-350 6 Foot Bed.
    For your 2015 Ford F-350 with the 6 foot bed, I would look at a slider 5th wheel hitch to allow yourself enough clearance when making 90 degree turns wth the shortbed design of your truck. The B&W Companion 5th Wheel Hitch # BWRVK3400-5W and the B&W Custom Under-bed Installation Kit # BWGNRK1111-5W is the 5th wheel hitch that I recommend for your application. The B&W slider hitch gives you 12 inches of fore and aft travel to help eliminate clearance issues in making turns and has a capacity...
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  • Front and Rear Axle Helper Springs for a 2013 Ford F-350 Dually 4x4
    To prevent sag when towing or carrying heavy loads in the truck bed you would just need rear helper springs on your 2013 Ford F-350. But this can put more stress on the front axle and suspension and the ride would not be as good if you used front and rear helper springs. With that said what I recommend is to start out with just rear springs because you could always add front helper springs later should you determine that you need to. For rear Timbren helper springs you can use # TFR350SDF....
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  • What is the Difference Between a Rear Air Bag System and a Weight Distribution System
    Basically, a weight distribution system moves some of the load up the vehicle frame so that the front suspensions bears some of the weight. Weight distribution spreads some of the weight from the rear axle to the front. An air bag system spreads the weight across the rear axle. Instead of having 2 springs bearing the load, you now have 4. When towing large trailers, air bags should not be used instead of a weight distribution system. A hitch and vehicle will have a Weight Carrying Capacity...
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  • How to Install the Offset Timbren Rear Suspension Enhancement on a 2011 Ford F-350 Super Duty
    The Timbren Rear Suspension Enhancement System, # TFR350SDF, is confirmed to fit for a 2011 Ford F-350 Super Duty truck. The offset design Aeon spring will replace the OEM stop and will align with the rear axle. I have attached an installation video of the Timbren being installed on a 2013 Ford F-350 and a picture of the unit installed in the offset position on the Ford truck.
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    Image 1 for
  • Will Firestone Ride-Rite System Install With Reese Custom Brackets on a 2012 Ford F-350 Super Duty
    We do have a rear suspension enhancement system that is confirmed to work with your Reese 50073-58 custom brackets and rails on your 2012 Ford F-350 Super Duty, however, I cannot guarantee that the Firestone Ride-Rite Air Helper Springs, # F2550, will fit because the Reese custom brackets cover the hole in the frame rail that the upper bracket from the air bag uses to install as you mentioned. The Ride-Rite air bags are compatible with the Reese universal brackets and the Elite Series...
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  • What Timbren Rear Axle Suspension Kit Best for 2013 Ford F-350 DRW Pulling 5th Wheel Trailer
    Rubber jounce springs such as the Timbren # TFR250SDG that you referenced offer several advantages over air springs. Jounce springs generally cost less, they are easier to install and they require no maintenance or periodic adjustment. Also, since jounce springs do not engage the axle unless the vehicle is under load normal everyday ride quality will be unaffected by their installation, but when under load they will provide progressive resistance as the load increases. Please note that...
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  • Do Timbrens for 2005 Ford F-350 Fit with Reese Fifth Wheel Rail Kit
    Yes the Timbren rear suspension kit part # TFR350SDF is a confirmed fit for your 2005 Ford F-350 and is compatible with the in-bed fifth wheel hitch you have installed currently. This will do a great job getting rid of the suspension sag you have experiencing as well.
    view full answer...
  • Will The Timbren Rear Suspension Enhancement System Fit The 2015 F350 Tow Boss?
    I contacted Timbren on your behalf who confirmed that the Timbren Rear Suspension Enhancement System # TFR350SDF will fit your 2015 F350 Tow Boss with the upgraded axle. This kit does have a spacer included in the kit to adjust the ride height for applications as needed. Included are video resources with additional information to review.
    view full answer...
  • Timbren Suspension Kit Recommendation for 2015 Ford F-350
    For your 2015 Ford F-350 crew cab short bed single rear wheel the Timbren kit part # TFR350SDF is a confirmed fit and will work great. This kit can provide up to an additional 8,600 lb of suspension support and fits versions of your truck that have and do not have the overload springs.
    view full answer...


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Michael B
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