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  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:$297.00
Our Price: $252.45
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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 1-800-940-8924 for expert service.
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Timbren Vehicle Suspension - TFRFLX

  • Jounce-Style Springs
  • Rear Axle Suspension Enhancement
  • Timbren
  • 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   (4023 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.

by:
2019 Ford Flex

Had to have it professionly installed.bolts were torqued to the max and access to the bolts was impossible to get clear line for wrenches, when completed ride is better and vehicle sits higher. service and delivery was great



by:
Ford

The product works great on my Ford Flex



by:
2018 Ford Explorer

Item is just as described, thank you etrailer for the how to video install for my Ford Explorer. Install took 1hr.



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.



by:
2017 Ford Flex

Fits perfect on our Ford Flex's. Half the price compared to the shop.



by:
2012 Ford Flex

pretty ez install....fast delivery



by:
2016 Ford Explorer



by:

The job took about 1 hour all went wel l.



by:

Review from a similar Timbren Aeon Spring System in Vehicle Suspension


I used this on my Isuzu tow truck. The blocks in and of themselves are fine, they support the weight. Here's the problem: They are pre-loaded, meaning that they always touch between the frame and the rear axle. As you load the vehicle this puts more pressure on the frame in this 5" area where the blocks are. The springs have not yet taken as much weight as they normally would. Now, all this upward pinpoint pressure bends the frame. This is what happened to me on my rollback tow truck. After many hours and now double plating the frame all is well again, but a tremendous amount of work. Yes, the blocks are fine, but the result of installing this product resulted in a bent frame. The vehicle was not overloaded and was within the GVWR.


Comments
I have reached out to the manufacturer who will be reaching out to you.
-- Etrailer Expert Jenny N - 01/20/2022

by:

Review from a similar Timbren Aeon Spring System in Vehicle Suspension


I really like these Timbren bump stops. I think the best thing about them is the simplicity, both how they work and how easy the install was. I bought these when I added a dump insert (similar to a salt spreader) into my 2019 F-250. I have loaded this truck heavy before with dirt and the truck sagged tremendously and had a lot of body roll. To prevent this with the now added dump insert, I installed these. Super easy to install! Took maybe 30 min. It reduces body roll and seems to improve the ride depending on how loaded the truck is.

One unfortunate consequence to the install is that the Timbrens brought to light that I have a weak leaf spring on my passenger side, which was suspect previously.

Overall, I'm very pleased with this purchase and would buy again!



by:

Review from a similar Timbren Aeon Spring System in Vehicle Suspension


Delivered a day early, easy installation, just what I was after for my 2010 2500,with a leveling kit 63 gal auxiliary tank,generator, tools, and the like in the bed,probably 1000 pounds or so,300 or so behind the center of the rear axel, not so much by choice just the way it had to be ,these got rid of that annoying little squat,much more satisfied with the stance with the tongue weight on it,easy order easy delivery , you can see the before and after, awesome product!!



by:

Review from a similar Timbren Aeon Spring System in Vehicle Suspension


Product is high quality, all parts fit well and I didn’t have to force anything. High strength thick steel, and the jounce bumpers are seriously heavy duty. I haven’t had a load on the truck (98 Ram 3500) since install a few days ago, so they haven’t touched the base plates yet.

One thing I’m concerned with is the jounce bumpers are touching and are right up against the lift blocks and U bolts. I’m unsure of the longevity these bumpers will have after a heavy load is on them and they are constantly rubbing on the hardware. Also, as the load gets heavier they expand outward as they flatten out so I’m also concerned with if that will push my lift blocks outward and mess with the suspension.

I’m prepping for a slide in camper and when I get it I will have to take a look and see what effects that weight has on the suspension, the bumpers, and ride quality.


Comments
I am not sure when I will be able to have a load on it to confirm, as I do not have a camper just yet. I am currently working on upgrading the suspension in preparation for one. Is there an alternative similar solution, other than airbags - as I dont want those, that can be run? With a similar weight capacity? Kind of interesting Timbren hasnt run into this issue before with the older Ram 3500s. Wonder if this is somehow unique to my truck? All the rear components are original OEM, so it seems kind of strange.
-- comment by: Jimmy - 01/05/2022
Comments
You mentioned that the jounce bumpers were touching up against the lift blocks without a load in the truck and I wondered if you could send a picture of the installation?
-- Etrailer Expert Jenny N - 01/05/2022
Comments
I do have additional questions for you. Is the top picture showing how the springs look with a loaded weight? Have you already installed your slide in camper? I wanted to see if the top bracket were touching as well? The manufacturer is trying to determine if a smaller diameter spring would help or not
-- Etrailer Expert Jenny N - 01/05/2022
Comments
Both pictures are right after installation with a completely unloaded bed. Since installation, I have not had weight in the bed, so I can not 100 say if the top brackets would touch the U bolts or leaf springs. But from looking at it just now, it appears the top bracket would just barely touch the U bolts with a loaded bed, and would definitely touch if there was side to side movement with a loaded bed like going over a speed bump, pot holes, or uneven terrain.
-- comment by: Jimmy - 01/05/2022
Comments
I did hear back from Timbren. Currently there is not a bracket that would be narrower that they can offer. When loaded if the brackets interfere with the smaller spring, then it may be advisable to return the kit.
-- Etrailer Expert Jenny N - 01/05/2022
Comments
I am not sure when I will be able to have a load on it to confirm, as I do not have a camper just yet. I am currently working on upgrading the suspension in preparation for one. Is there an alternative similar solution, other than airbags - as I dont want those, that can be run? With a similar weight capacity? Kind of interesting Timbren hasnt run into this issue before with the older Ram 3500s. Wonder if this is somehow unique to my truck? All the rear components are original OEM, so it seems kind of strange.
-- Etrailer Expert Jimmy - 01/05/2022
Comments
I was researching if I had an alternative and I realized that I needed to confirm your set up. Do you have the 3500 cab and chassis - if yes was it always a cab and chassis - or do you have the 3500 pickup? I am under the impression that you have the pick up since you want to use a slide in camper however, I wanted to be sure.
-- Etrailer Expert Jenny N - 01/05/2022
Comments
It is the 3500 pickup. Thanks!
-- Etrailer Expert Jimmy - 01/05/2022
Comments
I believe I now know what happened and I should have asked about the truck before now. The TDRTT3500 that was ordered is used for the cab and chassis model versus the pickup and this is leading to the fitment issues you have seen. I do have two options to offer for the 1998 Dodge Ram 3500 pickup including a different Timbren application. They are part # TDR3500
Timbren Rear Suspension Enhancement System
$373.07
and part # SSA25
SuperSprings Custom Suspension Stabilizer and Sway Control Kit
$629.99
.
-- Etrailer Expert Jenny N - 01/05/2022

by:

Review from a similar Timbren Aeon Spring System in Vehicle Suspension


First, this is the third truck have have put Timbren SES on, so I am a big fan of this option for a pickup truck. There is no impact to the ride when the bed is empty, when loaded it is a big improvement keeping the truck is a level position, reduced sway.. I would have given this 5 stars, except the lower bracket is rusting. All the other parts are painted black except this one part - see picture... This is after one year, truck is parked in a garage in NC (not a high snow/salt state)...


Comments
I continue to be a fan, on my 1019 f150, I used the 1 in spacer, works perfect ! I have dumped 2200 lbs of stone in the bed a few times, no problem.
KLM - 01/05/2022

by:

Review from a similar Timbren Aeon Spring System in Vehicle Suspension


Great addition to my 2018 ram 1500 I also installed Bilstein 5100 shocks and heavy duty coil springs along with the bump stops



by:

Review from a similar Timbren Aeon Spring System in Vehicle Suspension


Highly recommend for anyone towing. Leaf springs were flattened out prior to install. Swapped the bump stops out for Timbrens in a campground before making a 1000+ mile trip home. They work amazing leveled the truck out while towing and absorb the bad bumps.


Comments
I would absolutely buy the Timbren SES again if I didn’t already have them. No issues after a year.
David B - 08/23/2021

by:

Review from a similar Timbren Aeon Spring System in Vehicle Suspension


Installed on 98 Ram 3500 pickup. Haven't put a load on it yet, but it installed very easily and fits well. Driver's side spring brackets were a bit harder to install than the passenger side, but still overall easy.

One con was the powder coat finish was worn off in spots right after opening the box. Not sure if the packaging is to blame or what, but in general the packaging never seems to be that great on the etrailer products I've ordered (just brown packing paper).


Comments
Please cover any bare metal with anti-corrosive paint to prevent excess rust. Follow more tips in this help article:
-- Etrailer Expert Sierra K - 01/18/2022

by:

Review from a similar Timbren Aeon Spring System in Vehicle Suspension


I have a 2018 GMC Sierra 1500 pick up truck (elevation package) in which I added a 3.5 inch ROUGH COUNTRY KNUCKLE LIFT KIT with Front Struts. The rear distance between the bump stop's metal cup just under the frame and the the rear axle is 8.25 inches with an empty truck bed and a quarter tank of gas. I gave the professional this information on my truck and what I needed; they e mailed back the kit with only 1.5 additional spacers on each side of the truck, Ok. I still came up with 2.25 inch space with an empty truck bed on both sides. I feel More TIMBREN PRODUCTS WOULD be SOLD if websites carried information All together for the average people to buy at their finger tips. It would have been easier for me if the following were all grouped together for my truck :
TIMBREN Rear Suspension Enhancement System
TGMRCK15S (that has 3/8 bushing) which is actual about 4.5 inches not 5inches in
height.
FOR TRUCKS with LIFT KITS spacers are required with the same 3/8 bushings

1 inch spacer (that has 3/8 bushing) A25723-90AHOO
1/2 inch spacer (that has a 3/8 bushing) TA25722-90POO
I required an additional 1 inch spacer on both sides than I was e mailed. It would also be easier if I could buy the additional bolts grouped with my additional 2.5 spacing on both sides of my truck on the web site, than going to the hardware store. I would pay the additional cost. So all together for my 3.5 ROUGH COUNTRY LIFT, I required 2.5 inch spacers on both sides with the 4.5 height kit which = 7 inches . I haul my 4 wheeler in the bed and broke a level spring years ago. On other occasions I place fire wood in the truck bed. TIMBREN is the way to go, it will be there when I put weight in the bed of truck; be it a 4 wheeler or wood. Friends of mine have air bag systems that leak over time and are much more in price. You can not go wrong with TIMBREN. When installing, remove salt and sand near top of original bump stop bolt, apply PB blast wait 10 minutes use a breaker bar with easy removal. Go to the hardware store to get longer bolts. When installing have to jack up the back of the truck under the towing package to get space to use tools to add new TIMBREN PRODUCTS.


Comments
Awesome for hauling four wheeler in bed and for hauling load of fire wood in the bed, no broken leaf springs and no sag
Joe - 03/23/2022

by:

Review from a similar Timbren Aeon Spring System in Vehicle Suspension


This Rear Suspension Enhancement kit were so easy to install, I was almost sure I missed something.
They installed in less than an hour. I was able to place my floor jack under the ball mount to raise the rear end enough to remove the old mounts and simply install the new ones.
Hooked up my 28' rv to my Silverado 1500 and they worked as advertised. No front end sag and I feel safer towing it.
Customer service helped me find the right product I needed without dishing out a lot of cash!


Comments
While I have sold this vehicle since this review to my neighbor, she has told me she loves this product when she pulls her rv. I now have a 34 ton pick up and purchased a set for it. I am very satisfied with the Enhancers i purchased for it!
Frank R - 06/19/2021

by:

Review from a similar Timbren Aeon Spring System in Vehicle Suspension


I was very impressed with the easy installation and
the performance of the product.
I can easily put a 1 yard of top soil in my Ram 1500
and my truck carry it level , no problem. No more snag
In the rear. I also find towing a trailer much better. No worries about blowing air bags, this product is maintenance free. Love it, it simple and it works great. Highly recommend


Comments
Great product, works well and easy to install
Anthony L - 05/31/2021

by:

Review from a similar Timbren Aeon Spring System in Vehicle Suspension


Never mess with airbags again on your truck. These Timbren bump stops are the only way to go. Installation took a total of 10 minutes and they work amazing. No messing with airlines, filling or deflating air bags with complicated installation. I’m towing a 44ft trailer and these Timbren bumps stops are a must. Great product but a little pricey for what they are.


Comments
After a year of towing some kind of trailer every week, the bump stops are showing some wear from riding on the bump stop pad on the axle. That being said, they are still working as intended and as good as the day I installed them. After a lot of miles, the only draw back is driving around with no trailer. Normal driving the ride isn’t effected but when you hit a bump in the road you really feel it hit the bump stop. You loose a fair amount of rear suspension travel with these but I’m used to it now.
Brandon - 05/11/2021

by:

Review from a similar Timbren Aeon Spring System in Vehicle Suspension


Fitment for Ram Promaster 3500 Thor Sequence 20k motorhome:
A suspension enhancement that should be installed on every Promaster 3500 camper conversion. Straight from Thor's factory, these campers wallow in wind and when semis blow by; scaring the daylights out of you.
Timbren's upgrade is easy to install and results in about an additional 1/2-3/4" clearance. Improvements in handling are immediately noticeable. Even driving around town. Rounding hard curves on the interstate used to be dreadful. Now I drive into them with confidence.
STILL, handling needs additional help. Helper springs will be my next purchase. Unfortunately, etrailer does not carry Hellwig EZ-990 HELPER SPRING KIT (part #9665) . It's design addresses some of the complaints voiced by buyers of etrailers option.
Additionally, I considered replacing the OEM NEXEN tires with ones with a higher load rating. Thinking they contributed to handling issues. BUT, after installation of Timbren's upgrade; it was clear that is not necessary. Timbren's product is ridiculously priced for what it is. Though the handling improvements alone are well worth it. Perhaps one day these will be stock on all Ram Promasters.


Comments
Thank you for your review! While dont carry the part you mentioned, we do carry the SuperSprings Custom Suspension Stabilizer and Sway Control Kit as an alternative. I attached a link to the part.
-- Etrailer Expert Brooke M - 05/11/2021
Comments
The Timbren Rear Suspension Upgrade has worked quite well in the year since it was purchased. I also added Hellwiggs helper spring kit and changed tires to Michelin Agilis Cross Climate. One can drive the Ram Promaster 3500 camper fully loaded with complete confidence, now.
Katherine E - 06/23/2022

by:

Review from a similar Timbren Aeon Spring System in Vehicle Suspension


Definitely a simple and easy to install option to stiffen up the rear of a gx460 my boat is at the maximum capacity of 6500 lb it definitely has a better ride stance and does not squat as much with these installed. I am thinking that I need the airbags in addition to get a little more of a buffer or cushion so that I do not destroy the bearings in the rear end. I probably also need a weight distributing hitch. I feel the price is reasonable for the rear however find that the front timbren kit being the same price is a bit disproportionate the front bump stops are much more simple and do not require the additional manufacturing of a steel support bracket. The price is reasonable for the Rears. I was however disappointed to find that the hardware sent with the kit did not conclude stainless steel bolts. I reused the factory bolts. I also found that I needed an extra washer to completely tighten without a gap. I was able to install these without taking off the tires in about 15 minutes. For their simplicity they are definitely worth the upgrade. I would hope that timbren would offer a lower price for the front units and for the price of the rears give proper stainless steel Hardware instead of zinc plated that will Rust quickly.


Comments
Thank you for your review. It would not be helpful to use both the air bags in the coil springs and the timbrens. If you are still experiencing sag, I recommend to use a weight distribution. I have attached a helpful link to help choose the best weight distribution system for your trailer and the ion of weight distribution hitches we have available.
-- Etrailer Expert Heather A - 06/07/2021
Comments
After 1 year Still happy with my purchase. I have both the Timbren rear suspension enhancement as well as the Air lift system - the combination has made my GX460 much more stable when towing my boat that is at the Max Capacity for the truck. I would definitely install again If I had another GX. I find these to be a great value.
David - 06/04/2022

by:

Review from a similar Timbren Aeon Spring System in Vehicle Suspension


Product does not help rear swag with fifth wheel camper but a half inch. On brand new truck as well. Not happy with product. Called to return them and want me to pay 27.00 shipping and stated in email that was sent to me I couldn’t return if installed. I’m not understanding this ? Do not buy ! I won’t be doing any more business with etrailer . Not helpful at all


Comments
I will have our Customer Service team reach out to you. For Timbren products there is a 60 day money guarantee and they can be returned after installation. There is a shipping cost back that you would be responsible for.
-- Etrailer Expert Jenny N - 03/31/2022

by:

Review from a similar Timbren Aeon Spring System in Vehicle Suspension


2019 ram 1500 classic and help stop sagging by 2 inches with fully loaded Lance 650 on top



by:

Review from a similar Timbren Aeon Spring System in Vehicle Suspension


I just installed the Timbren Rear Suspension Enhancement System on my 2019 Ford F-150 4x4. The install was pretty straight forward, but I will say that the written instructions were pretty vague. Reviewing the Video on the e-trailer site was helpful. Also the markings for Left and Right could be improved. The marking “L” was very small and baring readable and the “R” appeared to be under some scratch marks so it was not legible at all. I think this product will help considerably. I have attached photos. The clearance between the rubber spring and the bottom plate is approx 1”. I also previously installed the Equalizer weight distribution & 4 way anti sway system to tow my 30’ Travel Trailer. The Timbren is to prevent any slight squat may occur.


Comments
Great
Peter - 02/16/2021
25
3508
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Ask the Experts about this Timbren Vehicle Suspension

  • Timbren Suspension Kit that Fits 2015 Ford Explorer Police Interceptor
    Yes, since the 2015 Ford Explorer Police Interceptor is the same height as the standard Explorers the Timbren kit part # TFRFLX that you referenced would fit and work well.
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  • Timbren Rear Suspension Enhancement System for a 2017 Ford Explorer Sport
    Yes, the Timbren Rear Suspension Enhancement System item # TFRFLX you referenced fits all models of the 2017 Ford Explorer including your Sport model. I have linked an installation video. These hollow rubber springs have a 3,000 lbs capacity and sit above the rear axle to help stabilize and level your Ford Explorer. I have attached an installation video.
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  • 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...
  • How To Help Keep A 2017 Ford Explorer From Sagging and Wheels Rubbing While Loaded
    The Air Lift AirLift 1000 Air Helper Springs part # AL60821 are a fit for a 2017 Ford Explorer and will help with your rubbing issue. The air bags install inside the coil springs and when inflated will stop the springs from compressing as much therefore you won't sag as much therefore your tires won't rub. The best part of all is that the air bags are adjustable so you can simply let the air out while a load is not present so it doesn't affect the unloaded ride quality. The Air Lift AirLift...
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  • Solution for Suspension Enhancement That Fits 2014 Ford Explorer Sport
    Although the the Timbren # TFRFLX is confirmed to fit the 2014 Ford Explorer, it does not fit the Sport models. For suspension enhancement that will fit your 2014 Ford Explorer Sport I recommend the Air Lift 1000 Air Helper Springs for Coil Springs - Rear # AL60821. The Air Lift 1000 will support your existing rear coil springs to help keep you level when towing or hauling a heavy load. They install inside of your rear coil spring suspension and have a durable polyurethane construction....
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  • 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.
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  • 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...
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  • 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 quality...
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  • 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 instructions...
    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...
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  • Will Timbren Rear Suspension Enhancement System Fit a Lifted 2017 Ford Explorer
    In order to install the Timbren Rear Suspension Enhancement System part # TFRFLX on a lifted 2017 Ford Explorer you'll indeed need spacers to fill the gap. The best option is to match the height of the spacer to the actual lift. We offer both 1" part # A25723-90AH00 and 1/2" part # TA25722-90P00. Please note, because of the spacer's you may need to source longer hardware to attach the spring to the bracket.
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  • Installations, made easy.

    We love helping people and have the most highly-trained customer service, hands-on experience, step by step videos and installation instructions.
  • Fast shipping.

    Your order is automatically routed to get out of our warehouse and to your door as quickly as possible. Receive free shipping on orders over $99.
  • Personalized service for life.

    We provide one-on-one, personalized service from the ordering process through the life of your product.
  • Trusted since 1946.

    We've been serving customers since our parts store first opened in 1946 and continue to be recognized by our customers, our vendors and third parties for exceptional service.
  • Returns Policy

    Need to return an item? No problem. Please read our Returns Policy for more information.

Info for this part was:

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

At etrailer.com we provide the best information available about the products we sell. We take the quality of our information seriously so that you can get the right part the first time.