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  1. Vehicle Suspension
  2. Timbren
  3. Bump Stops
  4. Towing/Load Leveling
  5. Rear Axle Suspension Enhancement
  6. Standard Duty
THIS ITEM IS NOT A FIT FOR
1997 Chrysler Intrepid
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Timbren

Timbren Rear Suspension Enhancement System

Part Number: TTORTUN4L
In Stock
$269.36
Retail:$316.90
You Save: $47.54
Vehicle Suspension
Not Confirmed to Fit

1997 Chrysler Intrepid

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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 TTORTUN4L can be ordered online at etrailer.com or call 1-800-940-8924 for expert service.
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Timbren Vehicle Suspension - TTORTUN4L

  • Bump Stops
  • Towing/Load Leveling
  • Timbren
  • Rear Axle Suspension Enhancement
  • Standard Duty
  • Suspension Only

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 when towing or hauling gear
    • 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 when loaded. 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 when loaded or towing because the rubber has more travel.



TORTUN4L - Rear Suspension Enhancement System with Aeon Hollow Rubber Springs by Timbren

Installation Details TTORTUN4L Installation instructions

This Product Fits The Following Vehicles




Ratings & Reviews

4.7

3586 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:

Product as advertised. Installation quite easy, would be 30 minutes if up on hoist.



by:

Everything arrived intact, no damage. Instructions were clear. Products were put on with ease. Thanks



by:

The front and rear kits came yesterday and I installed them today in my pole barn while the winter weather blew out side. Will try them next month!
I am 75 years old and did the install myself , the rear took the longest as it is a tight area. My unit is a 2017 Georgetown XL Thanks for the videos and info online.



by:

Received the product promptly. Exactly what I needed .... decided on this instead of air bags since I only tow a boat.



by:

Product fits as described. Will try out when I tow my travel trailer in a few weeks.



by:

So far all I have done was the install. It goes just like they said. As installations go pretty straightforward and easy.



by:

As advertised the product was easy to put in on my 2019 ram crewcab tradesman 4x4 pickup. Can't wait to try them out when i use my 20' travel trailer.











by:

Pretty easy installtion and much needed in the 'Burb when towing our travel trailer and kids. All said and done in about 30 minutes with two people.



by:

Absolutely excellent service delivery was on time and product is exactly what I needed. I shop in trailer because the description that you read is what you get when you receive your product.



by:

Very fast shipping! Great product! Thank you much!!



by:

Have used these before on a previous vehicle. E Trailer has the best price and the install videos are also helpful



by:

Did my due diligence researching this product, including other customer reviews.
Can't wait to install them, but the Winnebago has been put to sleep for the season. I'll submit a performance report in the spring.



by:

Helps a lot with trailer loads. Would buy again.



by:

Easy installation except the passenger side is a little harder.



by:

Great product, easy to put on. It took less than 45 minutes to put the new Timber butt stops on. Only thing I would request is to tape up the box they cam in, because by the time it travels to your location it’s beat to hell and back. Like the last time I ordered the ones for the front, all the parts were missing. Luckily this time all items were still in the box.



by:

Timely shipping! Project is completed, Thanks.



by:

With an impact gun, was easy to install replacing the stock bumpers. Worked great with an 18' trailer and tractor on my truck. Much less sag and stiffer ride.



by:

I opened the box and took a quick look at them and they look good.



by:

Product arrived on time and the instructions online were excellent. Installed both sides in 2 hours. Product didn't make a huge immediate difference but did stiffen heavy loading up. Coupled with new shocks - great product.



by:

Great communication and great delivery time. Just finished placing them on my truck. Easy 45min work. Thanks etrailer.



by:

Just received these this morning very easy to install just had to jack rear of truck and take out and replace one bolt. Very easy!



by:

Really helped with the support of my trailer.. excellent product



by:

Easy to install. Took 20 minutes. Quality is great. We'll see how they hold up with the trailer hooked up.



by:

Haven't tried them out yet with the trailer, but install was fast and simple. Looks great and has not changed the ride unloaded, as some reviews had suggested. Will know more after hauling horse.



by:

Fast and reliable shipping.


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3586
Show More Reviews

See what our Experts say about this Timbren Vehicle Suspension

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    Suspension enhancement systems like Timbren springs are perfect for the scenaro you're describing. These solutions supplement your factory suspension but don't necessarily increase your capacity. Timbrens are hollow rubber springs that sit above the rear axle to help stabilize and level your Toyota Tacoma. Below are what I recommend of the available spring choices. For off road applications, I recommend the Timbren Active Off-Road Bumpstops # TABSOSR for vehicles if the axles are...
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  • Timbren Rear Suspension Enhancement Recommendation for 2023 Toyota Tacoma
    Hey Fernando, I'd be happy to help you pick out the correct Timbren rear suspension kit for your 2023 Toyota Tacoma TRD that will be towing a trailer. Really it comes down to two options. You would want the part # TTORTUN4L for if you have the 3 leaf spring setup in the rear suspension or the part # TTORTUN4 if you have a 4 leaf setup. I don't have a way to look up how many leafs are in your spring pack otherwise I would. The other options are severe service which means it's going to be...
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  • Can Spacers Be Added to Timbren SES To Make Smaller Gap
    Hey Ed! Yes, if you want the Timbren SES # TTORTUN4L to have a smaller gap and engage sooner, or be engaged all the time, you can add the Spacer Kit for Timbren Suspension Enhancement System # T93AV. Is this for hauling your commercial mower and utility trailer?
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  • Suspension Enhancements for a 2017 Toyota Tacoma with Firestone Airbags
    I do have a suspension enhancement option for your 2017 Toyota Tacoma that is compatible with the Firestone Ride-Rite Air Helper Springs part # F2407, however, the Timbren Rear Suspension Enhancement System part # TTORTUN4L and the Roadmaster Active Suspension Kit part # RAS4514-SAT will not work. In order to use a set of suspension enhancements with your currently installed Firestone Ride-Rite Air Helper Springs, I recommend the TorkLift StableLoad Rear Suspension Upgrade part # TLA7311...
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    Hi Drake, welcome back! The SumoSprings # SS96EV is indeed only for the crew cab models of 2023 Nissan Frontier, so what you are going to want is the blue SumoSprings Solo Custom Helper Springs # SSR-612-40. This one is specific to the king cab models and just to make sure, I verified that directly with SuperSprings. As for Timbren options that will fit your king cab, we have the following two options: Timbren Rear Suspension Enhancement System - 3,000 lbs # TTORTUN4L Timbren Active...
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    Hey Paul, thanks for reaching out again! Looking into suspension enhancements can be exhausting and overwhelming, especially when you've found a solution that works for you but it seems like there is a better alternative out there. You've stumbled upon the exact dilemma that faces everyone wanting to upgrade from jounce-style to air bag enhancement and there's nothing wrong with your thinking - or with either solution. The jounce-style you currently use are designed to be more cost-effective...
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    Hey Joseph! I can see why this would be confusing and we don't really call out the difference on our site. The Timbren SES # T24CR fits if your 2024 Frontier has a frame mounted bumpstop. The # TTORTUN4L has the extra bracket and is designed to replace a U-bolt clamped bumpstop. See the attached pictures. You will need to check your configuration to see which one is right for your Frontier. Are you adding these for towing or something else?
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    That's a good question, and the answer is pretty straightforward - yes, the RoadActive Suspension (RAS) is going to give you a smoother, less bumpy ride than the Timbrens for your 2019 Toyota Tacoma. Like you mentioned, the Timbrens do their job well due to the stiffness of their rubber springs, but that stiffness can also cause the ride to be uncomfortable or even jarring as there isn't much give to them. The RAS will absolutely remedy that while providing the same - or better - enhancement...
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  • Best Suspension Enhancement for a 2018 Nissan Frontier with Factory Ride Quality
    In regards to suspension enhancements for a 2018 Nissan Frontier, you have a few options but there are none from SuperSprings. The best option for unloaded ride quality would be the Firestone Ride-Rite Air Helper Springs part # F2558. However, if you don't want the maintenance upkeep of the airbags then the Timbren Rear Suspension Enhancement System part # TTORTUN4L are a great second best option. They can engage if you go over a big bump but aside from this they will retain a mostly factory...
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  • Fit & Height of Timbren Suspension Enhancement on 2019 Toyota Tacoma 4WD
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  • Axle U Bolt Torque Recommendation for a 2020 Toyota Tacoma for Timbren Install
    When installing Timbren suspension enhancement kits like the # TTORTUN4L, U-bolt and the straight bolt attaching the spring to the bracket doesn't have a specific torque rating as they're usually 'torqued to yield' meaning they're torqued down until they begin to deflect. I did contact Timbren who confirmed this. Included are additional video resources regarding this solution.
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