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  1. Vehicle Suspension
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  3. Jounce-Style Springs
  4. Rear Axle Suspension Enhancement
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Timbren Rear Suspension Enhancement System
Timbren

Timbren Rear Suspension Enhancement System

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$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

  • 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

Item # TFR350SDF

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   (6500 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:

So easy to install. Just use supplied bolts to assemble the spring to the plate. Then use bolts from your bump stop to attach to the frame. Check your clearances and your done!



by:

Bolted in like a factory part, i didnt require the entra spacers. No change in unloaded ride quality, but with 3000# in the bed the truck felt more stable. Im am very happy with it so far.



by:

These work great, highly recommend.



by:

This product was delivered quickly and efficiently. The quality of the product is excellent and look forward to seeing how they work when we are towing our trailer.



by:

Easy installation and excellent shipping speed! Thanks ETrailer!



by:

Your company ships right away and very helpful web site easy to use have not installed yet but will let you know asap thanks for your help



by:

Shipping was so efficient arrived days before estimated. Order was placed and within an hour was shipped!!!



by:

Great product. I haven't installed this set on my new truck yet, but I had them on my older truck and they did the job they were intended to do. Only problem was when the package arrived, the box was split open to the point of everything falling out. But no parts were lost, this time.



by:

This is a excellent product. I had them in my F-250 and when I bought my new RAM it was the first accessory I added. Best bang for the buck suspension product on the market today!



by:

Definitely worked as advertised, very easy to install.



by:

The service and delivery of these suspension assist was an example of professionalism. I am grateful.



by:

Canot believes that it came from so far and did not even take 2 full days to cross the border all the way to a small town in the province of Quebec Canada 2 tums up for deleverer for the timbren product took 30 minutes to complete the job very easy took the pick up for a ride this morning did not see any difference in handling the truck was empty can't wait to see how good of a job they will do when pulling the fifth wheel next week thanks again



by:

They did not fit right on my 2021 power wagon, I had to modify to make them line up with my differential and had to buy shorter mounting bolts for the bracket plus they where already used



by:

Very easy to install 30 min. tops. Have not tried them with the trailer yet but I'm sure they will do the trick. Very pleased!



by:

These work. Smoothed out the ride on my Xterra very nicely.



by:

Easy install. Product arrived before delivery date. Can already feel difference when just driving. Will hook up camper in a few week to see the real results.



by:

Product worked as described. Very easy installation for one person.



by:

They look as shown on the home page
Fast service



by:

Look alot beefier than stock... can't wait to put them in. It'll be a few more days. My trailer is still hooked up to the truck.



by:

15 minute install. Works as described. Easier and less expensive than helper springs



by:

Great servive and delevery very fast. And the video of installation on the site web was appreciated, they helped me , i watch them install my product in a time record.



by:

Just installed today, Took the spacer off after test drive. A lot smother ride than the airbags that I took off for these.



by:

Works great for heavy tongue weight conditions! But etrailer, c'mon man, you can't ship this in a retail box!!! USPS received the damaged box from UPS, and they had to tape it up for final mile delivery. Luckily everything was still in the box.



by:

Ordered Timbren SES for 2017 F350 4x4. Hope to reduce sway when loaded with truck camper. Arrived in less than 48 hours. Installed easily. Will road test in a couple weeks.



by:

Work as advertised. Truck only drops 1" . Easier & less expensive than air bags


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See what our Experts say about this Timbren Vehicle Suspension

  • 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...
    view full answer...
  • Recommended Timbren Suspension Enhancement for Ford F-350
    Timbren Suspension Enhancement will definitely help with the rear end sag and help you to have a more stable ride. To get the correct fit for your truck, I need to know the model year. For instance if your Ford F-350 is between 2005 and 2016 then I recommend the Timbren Rear Suspension Enhancement System # TFR350SDF. However, if your truck is a 2017 or 2018, then I recommend # TFR350SDJ. These products work on single rear wheel trucks as well as dually models.
    view full answer...
  • 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.
    view full answer...
  • 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...
    view full answer...
  • 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...
    view full answer...
  • 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...
    view full answer...
  • 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...
    view full answer...
  • 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...
    view full answer...
  • 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...
    view full answer...
  • 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...
    view full answer...
  • Where on Vehicle Suspension Does Timbren Suspension Enhancement System # TFR350SDF Attach
    The Timbren Suspension Enhancement System # TFR350SDF bolts on to your 2006 F-250/F-350 in place of the factory bump stops. It works on trucks either with or without factory top overload springs. The installation instructions are included along with a video. Timbren springs offer the advantage of not affecting your ride quality unless they are under load. I have provided a link to our main page for rear suspension products for your Ford truck. You can use the drop-down menu at the top...
    view full answer...
  • 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...
    view full answer...
  • 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...
    view full answer...
  • 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.
    view full answer...
  • 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...
    view full answer...
  • 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...
    view full answer...
  • 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...
    view full answer...
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  • Correct Timbrens for a 2001 Ford F-350 Cab and Chassis
    There are two Timbren Rear Suspension Enhancement Systems for a 2001 Ford F-350, part # TFR350SDF for standard models or part # TFRTT350F for service models. If you have a cab and chassis I recommend the latter as they will be better suited for this application.
    view full answer...
  • 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)...
    view full answer...
  • 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...
    view full answer...
  • Suspension Enhancement Recommendation for a 2006 Ford F-250 with B and W Gooseneck
    Yes, the Air Lift LoadLifter 5000 Air Helper Springs # AL57291 that you referenced has been confirmed as a fit for your 2006 Ford F-250 with a B and W gooseneck hitch 1105 or 1199R hitch installed in it so it should work very well for you as long as you have one of those hitches. Currently B and W is using the 1108 hitch, part # BWGNRK1108 so if this is the hitch you have it has not been tested. For a suspension system that will work regardless the Timbren part # TFR350SDF would be a...
    view full answer...
  • 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...
    view full answer...
  • Air Bag Rear Suspension Enhancement Recommendation for a 2012 Ford F-350
    The air bag kit I recommend for your 2012 Ford F-350 Super Duty is the Firestone Ride-Rite Air Helper Springs part # F2597 because Firestone uses 4 ply rubber vs. the 2 ply rubber used in their competitor's air bags. It is also nice to know that you are using bags manufactured by a company that is well known and trusted in the heavy-duty truck and towing sector. This kit fits 2WD and 4WD models, but it will not fit models with the V10 gas engine with extended cab and 8ft bed. If you have...
    view full answer...
  • Best Timbren Suspension System For 2008 Ford F-350 For 5th Wheel & Truck Bed Camper
    That's a good question, and between the two systems, the best one for your 2008 Ford F-350 for support while you are towing your 5th wheel as well as when you using a truck camper is the 8,600 lb option: - Timbren Rear Suspension Enhancement System # TFR350SDF The 8,6000 lb capacity of the # TFR350SDF is more than enough for both the pin weight of your 5th wheel as well as your truck camper. More than that though, the reason they are the best is because they are double-convoluted, while...
    view full answer...


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