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

Timbren Rear Suspension Enhancement System

Item # TFRFLX
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Retail:$265.18
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Vehicle Suspension

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TFRFLX - Jounce-Style Springs Timbren Rear Axle Suspension Enhancement
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In Use/Installed

3,000-lb Capacity. These hollow rubber springs sit above the rear axle to help stabilize and level your vehicle. They also provide a more comfortable ride by absorbing road shock and improving roll stability. Easy to install and use. Lowest Prices for the best vehicle suspension from Timbren. Timbren Rear Suspension Enhancement System part number TFRFLX can be ordered online at etrailer.com or call 800-298-8924 for expert service.
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  • Reviews (2371)
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Timbren Vehicle Suspension - TFRFLX

  • Timbren
  • Jounce-Style Springs
  • Rear Axle Suspension Enhancement
  • Standard Duty

3,000-lb Capacity. These hollow rubber springs sit above the rear axle to help stabilize and level your vehicle. They also provide a more comfortable ride by absorbing road shock and improving roll stability. Easy to install and use.


Features:

  • Improves suspension, handling and safety
  • Provides additional support as needed, so you always get a smooth, comfortable ride
    • Allows the leaf spring ample movement and cushions light loads
      • Rides just as smoothly when you're not hauling a load
    • Becomes more rigid as more weight is added
      • Increases stability - gives you great performance when you are hauling heavy loads
      • Reduces rear sag
  • Works independently - side to side
    • Helps to compensate for off-center loads
    • Reduces body roll when you have to swerve or execute a sharp turn
  • Acts as shock absorber, taking the brunt of bumps and rough roads
    • Extends the life of your suspension
  • Includes 2 Aeon hollow rubber springs, custom-fit brackets and hardware for simple installation
    • Replaces axle bump stops on frame
    • No drilling required


Specs:

  • Capacity: 3,000 lbs
    • Do not exceed your vehicle's weight-carrying capacity
  • Designed to work with a suspension system that is in good working order
  • Limited lifetime warranty - satisfaction guaranteed


An example of sag on a truck's rear axle under a heavy load. The Timbren Suspension Enhancement System levels the vehicle.

Whether you're hauling heavy loads in the cargo area or by pulling a trailer, you will often see the rear sag while the front end rises. In these cases, the rear axle is handling not only the weight of the cargo, but more of the truck's weight, as well. 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 has a custom-fit bracket that will be 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, one inch 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 the truck level.


Timbren suspension system works to prevent body roll

Each hollow rubber spring works independently to support the driver's 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 the truck. 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.


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.



FRFLX Timbren Rear Suspension Enhancement System

Installation Details TFRFLX Installation instructions

This Product Fits The Following Vehicles





Customer Reviews

Timbren Rear Suspension Enhancement System - TFRFLX

Average Customer Rating:  4.7 out of 5 stars   (2367 Customer Reviews)

3,000-lb Capacity. These hollow rubber springs sit above the rear axle to help stabilize and level your vehicle. They also provide a more comfortable ride by absorbing road shock and improving roll stability. Easy to install and use.

- TFRFLX
by:

These were very easy to install, about 15 mins each. I have not been able to test them with a loaded trailer but they look like they will certainly help with back end sag. 851339



- TFRFLX
by:

The job took about 1 hour all went wel l. 783820



- TFRFLX
by:
2012 Ford Flex

pretty ez install....fast delivery 69330



- TGMRCK25D
by:

Review from a similar Aeon Spring System in Vehicle Suspension


this is the second set of Timbren springs I have purchased, the first set was on my Ford Raptor, they took all of the sag and sway out of pulling my boat. I have this set on my 2015 GMC Denali 2500HD, I pull a 42 ft. 5th wheel and the Timbren's take all of the sag and sway out, these are in my opinion the best product I have purchased for my truck. 683687


Comments
this is still an amazing product! works as good today as the day I installed it. I recommend this to all my friends.
John G - 08/12/2020

97151

- TDVR05096
by:

Review from a similar Aeon Spring System in Vehicle Suspension


I carry 1400 pounds of tools and supplies in my NV200. These helped carry the load, along with heavier shocks. Very happy! 691745



- TFRTT350E
by:

Review from a similar Aeon Spring System in Vehicle Suspension


5 stars. Easy to install and made a big difference when pulling a 9k pound travel trailer. I would recommend it to anyone pulling a trailer. Kept it from sagging and level. 699184


Comments
Awesome and still working
02 F - 09/09/2020

98748

- TDVRRT
by:

Review from a similar Aeon Spring System in Vehicle Suspension


Installed this on my 2009 Caravan because when I had a hitch mount 4-bike platform rack hanging off the back and was loaded with camping gear and family, the rear suspension was terrible, it would bottom out, and my headlights pointed up so that everyone would flash their brights at me. New shocks helped, but did not solve the problem. This product did fix the problem and I am very happy. I was concerned about the feel when the van us unloaded, but this has not been an issue. I highly recommend this product. 796869



- TFRF53A
by:

Review from a similar Aeon Spring System in Vehicle Suspension


Delivery by etrailer was fast. Their advice as to proper application of the Timbrens saved me lots of money! 749745



- TGMFK25D
by:

Review from a similar Aeon Spring System in Vehicle Suspension


I first put the Timbrens on the rear to help stop bouncing and porpoising on highways and bridge ends when towing. The rears have a gap and do not touch the springs until the truck is loaded, working great and keeping a smooth unloaded ride. The front Timbrens fit snugly and touch all the time. The ride is firm and a bit harsh with my unloaded truck having a snow plow spring option. When my trailer 30 ft trailer is hooked up, the front of the truck is slightly lighter. Towing with the Timbrens is nice and the bounce and rebound porpoising is very controlled. I would like the front Timbrens to be a little softer when the truck is unloaded, but I think these units are a nice add-on for better control, safety, and preventing damages. I had the fronts installed at the shop when rotating tires and a front end alignment. The rears installed easily. 691475


Comments
They have worked out great when towing my 30 ft trailer. We took a coast-to-coast trip across the northern USA and into Canadian Rockies and excessive bouncing was controlled. I still would like the front to be a bit shorter and not always touching, so the unloaded ride would be less harsh.
Greg B - 08/20/2020

97600

- TGMRYS4
by:

Review from a similar Aeon Spring System in Vehicle Suspension


So far they look great. I will put on this weekend and see how they work with my travel trailer. 476068



- TDR1500DS
by:

Review from a similar Aeon Spring System in Vehicle Suspension


Doesn't get any easier for an install. A jack, some soapy water and a couple pieces of 2x4. In about 5 minutes you're done. Took out almost all sag when I dropped my travel trailer on the ball. Great addition to the suspension. 488109



- TDR1500DS
by:

Review from a similar Aeon Spring System in Vehicle Suspension


Not sure these were the best thing for my Ram 1500 pulling a 5th wheel. On some roads get a lot of bucking. Just ordered a set of Air Ride 5000's to try next. Larry T 617920



- TFRTT350F
by:

Review from a similar Aeon Spring System in Vehicle Suspension


These arrived as scheduled. The look good, well made. On my way out to install them now. The will get tested later today on the way to the lake. 703241



- TDR1500DS
by:

Review from a similar Aeon Spring System in Vehicle Suspension


Very happy with my timbrens and quick shipping. Added these to a 2013 2500HD 4X4. Quick and simple to install. improved ride quality and takes the squat out when pulling a gooseneck trailer. Very happy and would recommend to anyone wanting to improve quality of ride height. 493335



- TDR1500DQ
by:

Review from a similar Aeon Spring System in Vehicle Suspension


This was ordered because the truck seemed overloaded with just s few items. I haven't installed it yet but will let you know how it works after I do The shipping and packing were excellent and arrived quickly. 420483


Comments
Working great.
Glenn L - 08/15/2018

42324

- TDR1500DS
by:

Review from a similar Aeon Spring System in Vehicle Suspension


Great product. 597716



- TTORTUN4
by:

Review from a similar Aeon Spring System in Vehicle Suspension


I bought these as a replacement for "air bags" which I had two different sets, which failed over 10 years. i would say this product is helpful with pulling a trailer and lighter loads but from time to time I haul heavier loads and this product doesn't offer as much help/support as the air bags. This product is a little cheaper and if they don't weaken over time they will be a help. I have added additional leaf springs to two different pickups but then you end up with a stiffer ride full time. 421383



- TGMRCK25D
by:

Review from a similar Aeon Spring System in Vehicle Suspension


I INSTALLED THE TIMBRENS ON 7-5-12 AS PER PREVIOUS REVIEW. I TRIED THEM TODAY PULLING MY 35 FT. 5TH WHEEL.THESE THINGS ARE WORTH EVERY PENNY,VAST IMPROVMENT. THE TRUCK HANDLES BETTER,SITS BETTER,RIDES BETTER UNDER LOAD. GOOD JOB ,ETRAILER 50638



- TFR250SDF
by:

Review from a similar Aeon Spring System in Vehicle Suspension


Fast shipping 400467



- TFR1504E
by:

Review from a similar Aeon Spring System in Vehicle Suspension


Rear suspension pads work great. Ride is still like factory with no load unless driving over a big bump at high speed. When towing a 32 foot travel trailer the sag in back end of truck is greatly reduced with a lot more control. Easy to install. The downside is when truck is full with passengers and not towing anything the added weight makes the ride rougher. Shipped on time. 575558



- TFR250SDF
by:

Review from a similar Aeon Spring System in Vehicle Suspension


I have a Timbren rear suspension system on my 1982 Chevy truck that I still own, and after 20 years they still work fine. This latest set installed easily on my 2001 F-250 and they work just as well with and without a load. 440182



- TDR1500DQ
by:

Review from a similar Aeon Spring System in Vehicle Suspension


Have not tested it out yet, but the installation took about 15 minutes by myself, looking forward to trying them out with my 28ft enclosed trailer. You will need a block of wood under them when you let the jack down to seat them in the cups fully there is no way you can snap them in by hand, the video had that great suggestion 199076



- TGMFK25S
by:

Review from a similar Aeon Spring System in Vehicle Suspension


I ordered timbrens for the front and rear of my chevy 2500. I have a 2000 lb truck camper and I wanted something to help carry the load a little better. I had no idea that my front bump stops had worn away to almost nothing until I installed these. They have worn well and performed well so far. 628835


Comments
Still working great. No problems. Really happy I didnt waste the money on airbags.
Josh - 04/16/2020

73355

- TGMRCK25D
by:

Review from a similar Aeon Spring System in Vehicle Suspension


I bought these for a 2012 GMC 2500 Duramax. The installation for these was much easier than I anticipated (I can't say the same for the front suspension system.) Just lift up your truck, pry out the stock bumper stops, line up the Timbren springs with a 2x4 underneath, and lower the truck. The weight of the bed/frame is enough to get the Timbren spring to seat correctly. This took me less than 10 minutes. Ride quality seems to have improved as big bumps on the road are less rough. These keep the truck from sagging underneath the weight from a trailer, too, though I didn't have much problem with that to begin. Overall, I like this addition. Easy. 48427



- TGMRYS4
by:

Review from a similar Aeon Spring System in Vehicle Suspension


Very satisfied with the results,and the customer service.The first set were. incorrect.After calling etrailer,they got the correct one right out to me. 250319


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Ask the Experts about this Timbren Vehicle Suspension

  • Air Bags or Timbrens Recommendation for 2017 Ford Explorer
    For your 2017 Ford Explorer the choice of suspension enhancement comes down to a few things and what you value the most. The Timbren kit part # TFRFLX provides a super easy install, no maintenance, and great suspension support. The downside though is that unloaded ride quality will suffer since the spring is pretty harsh. If you will be in need of suspension enhancement basically all the time and like the no-maintenance aspect this is the winner. But if you need to have a decent ride...
    view full answer...
  • Comparing TImbren Jounce-Style and Coil SumoSprings for a 2012 Ford Flex
    I personally prefer the Timbren Kit # TFRFLX over the Coil SumoSprings # CSS-1069R for your 2012 Ford Flex basically because the Coil SumoSprings are kind of pressed into place and then secured with zip ties to help keep them where they need to be while the Timbrens are secured in place by a bolt. Both will do a great job at adding support to your suspension but in this comparison I'd go with the Timbren kit. Pro Tip - Make sure that your weight distribution (WD) system is rated properly...
    view full answer...
  • Rear Axle Suspension Enhancement for 2018 Ford Explorer Sport
    The Timbren rear axle jounce spring kit # TFRFLX will not fit the 2018 Ford Explorer Sport but it is possible to use an AirLift air spring kit, part # AL60821, if you have need for additional rear axle support. This kit fits both 2WD and 4WD versions of your 2018 Ford Explorer Sport. AirLift kit # AL60821 provides up to 1000-lbs of load leveling and it will help reduce strain on your OEM suspension and reduce sway. The air springs install inside your rear coil springs as shown in the...
    view full answer...
  • Rear Helper Springs for a 2017 Ford Explorer 4x4
    For your 2017 Ford Explorer 4x4 I recommend the Timbren helper springs # TFRFLX. With this system once it is installed there is no maintenance you have to perform and the ride quality will be improved when loaded or unloaded. If you want to go with air bags and have rear coil springs I recommend the Air Lift system, # AL60821.
    view full answer...
  • Installation of Timbren Jounce Springs and Suspension Enhancement Recommendation for 2012 Ford Flex
    The Timbren Rear Suspension Enhancement System # TFRFLX that you referenced will install to the inside of the coil spring on your 2012 Ford Flex. The installation instructions for the springs are attached. Timbren states in the instructions that a professional installation is required for these jounce springs. The suspension enhancement system I recommend for your 2012 Ford Flex is the Air Lift AirLift 1000 # AL60821. These airbags do install inside the coil springs of your Flex. With...
    view full answer...
  • Will Timbren Springs Eliminate Rear Sag on 2013 Ford Explorer when Towing a Trailer
    Timbren springs # TFRFLX will still allow the tongue weight of the trailer to pull down the back of your 2013 Ford Explorer a little, about an inch or so, so it won't take out the squat completely. The best solution for squat caused by towing a trailer is weight distribution (provided that your trailer hitch is rated for it). On boat trailers there is usually a straight tongue called a pole tongue. To use weight distribution you will need a pole tongue adapter # EQ95-01-5950. Then you...
    view full answer...

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Info for this part was:

Written by:
Tyler C
Expert Research:
Michael H
Expert Research:
Jameson C
Expert Research:
Adam R
Video Edited:
Jacob T
Video Edited:
Kathleen M
Video by:
Chris R
Video by:
Jonathan Y
Updated by:
Mary E
Test Fit:
Brent H
Installed by:
Robert C

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