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

Timbren Rear Suspension Enhancement System

Item # TFREXPA
Retail:$316.90
Our Price: $269.36
You Save: $47.54
Vehicle Suspension

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

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

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 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: 3,000 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.



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

Installation Details TFREXPA Installation instructions

This Product Fits The Following Vehicles





Customer Reviews

Timbren Rear Suspension Enhancement System - TFREXPA

Average Customer Rating:  4.7 out of 5 stars   (6041 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:
Lincoln Navigator

I’ve struggled with crushing my airbags and having the pump for the airbags burn up trying to keep up and hold the trailer. Using these have absolutely made all of the difference in no longer looks like Sanford and son and the trailer/vehicle stays level. I pull a 36 foot travel trailer weighs almost 8000 pounds with a Lincoln navigator. Absolutely the best thing I’ve installed to support trailer towing.



by:
2001 Ford Expedition

Installed this on my 2001 Explorer. Install is easy (assemble unit, bolt on in place of existing bump stop). Annoyed to find it doesn't fit. Specs are gap 1/2"-1-1/2"; there was a gap of 2-3/4". Yeah, they sell spacers for $27 each, but it's really annoying to buy a $225 product that says it fits your truck, only to find that you have to spend 50% more to actually adapt it to your truck!

Etrailer Expert

Jenny N.

10/19/2021

I will have our customer service team reach out to you. Only if the vehicle is lifted should this kit require spacers. This kit also comes with a 60 day money back guarantee.



by:
1997 Ford Expedition

Definitely worked as advertised, very easy to install.



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I know it will be lovely when loaded or the trailer on. However,it rides like a wagon empty with brand new premium shocks and struts empty. Thud thud thud. You really cannot feel the shocks or suspension. Found exact same item plentiful for 60 bucks on eBay after I bought these for 250. I may cut these in half or put air bag on. I do not like the ride empty. No hard feelings. It is a good product maybe just not for me.



by:

Installation was a breeze, removed old bump stops installed Timbrens in about 30 minutes. Haven’t put a load on them yet so I’ll update later. Installed on a 2008 Silverado 2500HD..



by:

About a 1/2 inch difference in gap at the bump stop perch but still within parameters. Truck sits perfect with trailer attached. Haven’t towed yet. After towing if they perform like they should will upgrade to a 5 star. Easy to install, definitely needed 2x4 and jack. 2011 Silverado ext cab with 30 ft Genisis 5th wheel.



by:

Was able to install these with a 15mm flex head ratchet wrench and lifted the rear of the truck to make it easier. 30 minutes to take off 4 nuts and put em back on. 2 minutes assembling the timbrens with the added spacer. I have a f350 with a salter and plow. Loaded with salt the lights shoot up and in the snow ?? it’s like hitting hyper drive and you’re blinded. These helped big time. Very happy so far.



by:

The pro: The longer, heavier bump stops worked great when hauling my mustang home from Chicago. The truck stayed level and handled great.
The con: I had to remove the bump stops for everyday use. They limited my suspension travel causing a stiffer ride.



by:

I am so glad I bought these for my truck. I was able to install them myself using a jack and jackstands. The ride is bit rougher now; but the suspension is totally awesome compared to before. I am able to haul a bit more weight when needed.



by:

Haven’t had it on long, but so far so good. 1999 F350 dually. Bolted up nicely. Total job took 10 minutes. Have hauled two gooseneck loads of hay and truck drives SO much better. Nice and level. Money well spent so far.



by:

very good product ,received just in time and fit perfectly on my GMC savana 2000 .Be sure to clean the two receptacle thats help.
très bon produit , reçu dans les délais et s'ajuste parfaitement . Assurez-vous de nettoyer le receptacle cela facilite l'installation.



by:

The timbrens actually did what they were suppose to do. However, once I starter driving out west I notice the timbrens were riding on the axle which cause the speedometer to jump around depending on the road. I would recommend them if you are hauling or towing a camper or RV. I was going to contact etrailer about maybe removing a spacer for one set however the other set came as one unit. The bottom line is the Timbrens does stabilize your load for safe travels. I will be contacting etrailer soon to assist in correcting the problem...Road trip from Idaho,Colorado,Wyoming,and Utah were beautiful... Thank you etrailer



by:

Definitely a must have when towing..stiff without a load but night and day difference while towing my travel trailer, better traction, steering and braking. Easy quick install..only issue I had was with the long bolts they sent with the spacer kit (optional for lift) the bolt diameter was too wide to fit through the holes on the bracket..but a trip to the local hardware store took care of that.



by:

Pros: Cheaper and easier to install than airbags, do the job when load is enough to compress the shock, with added weight or towing, then it stiffens the rear very nicely.
Cons: Doesn't do anything until there is 2-3cm of compressed shock. It sits above the contact point, doesn't touch. Under normal driving, there is no benefit/improved stiffness/anti sway in rear or a leveling of the factory rear sag in a 2022 or newer Toyota Tundra.
If had it to do over, would have put some kind of spacer in between product and upper included bracket, the supplied bolt is long enough to accommodate, to eliminate the gap, and lift the rear 1-2 cm. Should do it anyway, maybe when swapping to summer wheels next month.



by:

I’d seen similar products rated in the 4,000 lb ratings but I went with these. I’m not a mechanic but I removed the factory bump stops and installed both these in 30 minutes or less. I used my rolling jack and lifted from the drop hitch and easily removed the old ones and soapy water and 1/4 twist and these were on. Placed a block of wood in the space between these coils and lowered the jacks then pressed it with my tractor to confirm full engagement. I carry a lot of tools on a 2020 Chevy 2500 I do feel a bit of butt bounce on large bumps but other than that I’m very pleased.



by:

The order with Will at etrailer was great. He was very helpful and knowledgeable, Installation was not easy but not too bad, The hardest part was removing the factory pieces I removed them from below which was a blind nut removal operation. This is on a 2017 Mercedes Sprinter motorhome. After removal of the factory pieces I discovered that access is much easier on top between the tire and the mud flap, I turned the front wheels inward and they didn't have to be removed. The front of the motorhome had to be raised quite a bit to get the Timbren piece jnserted. Also I learned to tighten the bolt and nut in the Timbren bumper as much as possible before installation because there is no access to the bolt head when tightening the top nut to keep the bolt from turning, preventing tightening the nut.



by:

First off the product was beat up with paint/power coating missing in several places on both. I was putting on a brand new truck with less than 800 miles on it so I elected to touch up before install. I’ve hear a lot about Timbren but never had them. I had airbags on my F350 but when I switched to a new Tundra I went with Timbrens. I’m a bit disappointed in the ride. Feels like I can feel a “bump” in the truck from the rubber pick hitting the axle when I go on a bumpy road. Thinking I should have went with airbags. As far as having a load on the truck and helping with the squat, they do as they are advertised.



by:

I bought these to prevent the "squat" of carrying a load in a Ram 1500.It took only 30 minutes to install. Now when carrying a load or towing a travel trailer the truck is a better position.
The only thing you will notice is the smoothness of the ride. It's not, it is stiff. I'd rather have the stiff than the nose pointing to the moon.



by:

Product arrived 2 days earlier than expected but due to lack of care for packing metal items one of the metal brackets has chipped paint as per photo. Some of the pieces appear to be previously used.



by:

These work great for giving you a solid towing experience when loaded heavy; however, when driving empty you definitely get the jounce bumper “into the air” experience when driving on moderate to rough roads. I have the recommended gap installed between the axle and the timbrens, but with terrible midwest roads and highways it doesn’t seem to be enough gap. Smooth roads it rides great. It’s driving 80mph on the expressway and hitting potholes or large cracks where these will hit causing uncomfortable harsh ride.

I’ve resorted to installing and then subsequently removing these anytime I use my travel trailer for longer trips (30minute removal time). I tow a 7000lb loaded travel trailer with an f150 and just needed something to make the soft half ton suspension from porpoising too much on bad-roads. Mission accomplished when towing as I said these things work great for heavy loads. It almost rides better with heavy loads…. I was going to give airbags a try but the reviews from others have scared me from those because even with airbags at the lowest setting you still get the jouncing on bumpy roads.



by:

Easy install took about 20 minutes on my 2017 Ram 3500 SRW. Had about 1/2 inch clearance as recommended. Loaded up my 5th wheel (2350 hitch weight) and about 200 lbs of gear in the bed. Just got back from a 800 mile camping trip through mountains of TN. You can really feel the difference around those sharp corners and uneven surfaces. The truck felt firm and controlled not hard and jarring as some have mentioned. Going over those overpasses with the wonderfully smooth (Not) joists was greatly improved. The truck would squat and rebound again, with a firm controlled response. Driving without a load felt the same as before without them. I would highly recommend these! Ordering from etrailer continues to be my go to option!



by:

They do exactly what I wanted them to do. They support my boat trailer and when not towing, they don’t touch the bumpers everything’s great.



by:

Very easy to install on my 2020 Silverado 2500. We pull an Alto 3150 KBH travel trailer over 6,000 miles since we installed the Timbren rear suspension enhancement System. They reduced squat when hitched up. And now no more see sawing down the interstate over concrete expansion joints. My wife noticed the difference in ride on our first trip after install. Great Product!


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See what our Experts say about this Timbren Vehicle Suspension

  • Suspension Enhancement System for 1998 Lincoln Navigator
    The suspension enhancement system we have for the 1998 Lincoln Navigator is the Timbren Rear Suspension Enhancement System # TFREXPA. This is a jounce-style system that replaces the axle bump stops and has a weight capacity of 3,000 pounds. Timbren Suspension Enhancement Systems are designed to work progressively. When the hollow rubber springs are compressed as weight is added, the convoluted design causes them to quickly collapse along the folds. Once the folds are compacted, the stacked...
    view full answer...
  • Timbren Rear Axle Suspension Kit for 1999 Ford Expedition Eddie Bauer Edition
    Timbren rear-axle suspension kit # TFREXPA is a confirmed fit on the 1999 Ford Expedition, both the 2WD and 4WD versions, and it is indeed compatible with the OEM air suspension package in your Eddie Bauer edition. The installation instructions, which I have linked for you, indicate that the Timbren spring replaces your factory bump stop on each end of the rear axle. This is positioned to the outside of the rear coil spring on both sides of the vehicle as shown in the diagram that is included...
    view full answer...
  • Recommended Solution to Fight Sag on 2001 Ford Expedition with Timbren Springs Already Installed
    While the Timbren suspension enhancement for your 2001 Ford Expedition does help fight sag, it looks like a typical Coachmen 252RBS has a GVWR of 7000-lbs or more; any time your trailer weighs more than 1/2 the curb weight of the vehicle, a weight distribution hitch is a good way to help ensure that the trailer's tongue weight is distributed more equally across the axles of the tow vehicle. From what it sounds like based off the weights you mentioned, the weight of the trailer isn't being...
    view full answer...
  • Troubleshooting a 2000 Lincoln Navigator 4x4 with a Sagging Back End
    Thanks for sending us a picture! Your 2000 Lincoln Navigator 4x4 is certainly lower, and I am thinking you may have the wrong size shocks. Check the length of your new shocks and compare to your old shocks. Most likely your new shocks are too short and will need to be corrected before installing the Timbren suspension enhancement system # TFREXPA. You may need to adjust the ride height to obtain the correct clearance by changing or altering the rubber spring bracket. Or re-arching the...
    view full answer...
    Image 1 for
  • What is the Height of a Timbren Rear Suspension Enhancement System for a 2000 Lincoln Navigator 4x4
    I went to our warehouse to pull the Timbren suspension enhancement system # TFREXPA to provide you the measurement you are needing. The kit will include 2 rubber springs and 2 vehicle specific brackets for your 2000 Lincoln Navigator 4x4. The height is 3-3/4 inches. See the diagram I included plus the video I created for you. I added a helpful article that you can look at too.
    view full answer...
    Image 1 for
  • Helper Springs or Weight Distribution for a 1999 Ford Expedition that Sags with Boat Trailer Coupled
    You have some squat there but I've seen worse! Basically, there are two reasons that a vehicle can squat in the back. One is caused by the tongue weight of the trailer and the other is when you are carrying a heavy load in the back of the vehicle. When squat is caused by a heavy load carried in the vehicle that is when you would use suspension enhancement like helper springs of some kind. But when squat is caused by the tongue weight of a trailer the best solution is to use weight distribution....
    view full answer...
    Image 1 for
  • Timbren SES For A 2002 Lincoln Navigator With Rear Air Suspension
    Hey Ronan, Yes, the Timbren Rear Suspension Enhancement System # TFREXPA is compatible with your 2002 Lincoln Navigator's rear air suspension.
    view full answer...

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Info for this part was:

Employee Jacob T
Video Edited:
Jacob T
Employee Chris R
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Chris R
Employee Adam R
Expert Research:
Adam R
Employee Mary K
Updated by:
Mary K
Employee Wilson B
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Wilson B
Employee Michael B
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Michael B
Employee Carrie F
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Carrie F
Employee Bethann B
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Employee Jonathan Y
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