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Timbren Rear Suspension Enhancement System
Timbren

Timbren Rear Suspension Enhancement System

Part Number: TTORTUN4
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$269.36
Retail:$316.90
You Save: $47.54
Vehicle Suspension

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6,000-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 TTORTUN4 can be ordered online at etrailer.com or call 1-800-940-8924 for expert service.
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Timbren Vehicle Suspension - TTORTUN4

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

6,000-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: 6,000 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.



TORTUN4 - Rear Suspension Enhancement System with Aeon Hollow Rubber Springs by Timbren

Installation Details TTORTUN4 Installation instructions

This Product Fits The Following Vehicles




Customer Satisfaction Score:

Ratings & Reviews

4.7

3748 reviews
5 Stars
(2971)
4 Stars
(496)
3 Stars
(120)
2 Stars
(73)
1 Star
(88)
6,000-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:

I absolutely love them, retains factory ride.



by:

It was easy to install and they work very well



by:

Put them on The day I received them. Have not put a load on the truck yet. But, they definitely help with vehicle role around corners. Very satisfied.



by:

Product was easy to install and works as advertised.



by:

Easy to install corrected squat when pull 5wheel



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:

did not do what I wanted it to do.



by:

First time having a 5th wheel camper works great for the sway



by:



by:

Well i am 76 years old and when i ordered these i assumed it would take me half the day to get them on,i had them both on in one hour what a shocker could not be happier.



by:

Takes the sag out for a bargain, but not as good as real springs



by:



by:

These work great when hauling my race c ar.



by:

Haven't put them through their paces yet so I can't speak to performance yet. Ordering was pretty simple, installation was amazingly easy. More than likely will be purchasing more products in the near future. So far pretty satisfied with the process.



by:

easy to install, works as expected, alot less leaning in wind



by:

Awesome Product , if you have a lifted Xterra add the extra washer
etrailer rocks thanks for the fast shipping



by:

Love them! Work great in taking out vibration and back end play when hauling our camper!



by:

Received the rear suspension enhancement system 3 days after I ordered it. It was in perfect condition. It said it could take 2 hours to install but it didn't take me an hour. Very simple to install and installation instructions were complete. Would definitely recommend this product.



by:

Great product. Easy installation. Could not ask for more.



by:

Products were great super easy to install. Shipping took longer than expected



by:

Excellent product. Did everything I exp ected.



by:

Awesome easy install and great stability



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by:

Top brand



by:

Easy to install and it took care of truck squat when towing my RV.


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See what our Experts say about this Timbren Vehicle Suspension

  • Best Way to Prevent Sagging Suspension When Towing a Trailer
    For sag from towing a trailer the best recommendation I can make is actually a weight distribution system. Suspension enhancement will help level your truck while towing. But the advantage to a weight distribution system is that it levels the vehicle by distributing the tongue weight of the trailer up to the front axle of the vehicle as well. This will help greatly with handling and braking, especially in an emergency situation. The best way to pick out a weight distribution system is...
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  • Recommendation for Fighting Sag When Towing with a 2010 Toyota Tundra and Weight Distribution
    Weight distribution (WD) systems actually take on the weight of any cargo behind the rear axle of the tow vehicle (your 2010 Toyota Tundra) as well as the tongue weight (TW) of the loaded trailer. This is why you are finding that your WD system isn't performing as well when you load down the bed of your pickup. For example, the Equal-i-zer # EQ37100ET has a TW range of 600 lbs - 1,000 lbs. If you were using this system and the 709 lb TW of your trailer plus the cargo behind the rear axle...
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  • Recommended Timbren Rear Suspension Enhancement For A 2019 Toyota Tacoma With 4WD
    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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  • 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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  • Towing Capacity Limits for a 2010 Toyota Tundra
    As long as you stay under the 10,300 pound mark you should be fine. Currently your trailer and gear estimate would weigh 9,100 pounds. Take a look at the rig when the trailer and truck are fully loaded as though you were ready to hit the road. If the Tundra is sagging in the rear, I would suggest using some sort of suspension enhancement system. They spread the load to to more springs so there is a total of 4 points on the axle that weight rides on. Timbren makes hollow rubber springs...
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  • SumoSprings or Timbren Suspension Enhancement For a 2017 Toyota Tacoma Pulling Car Hauler Trailer
    I recommend the Timbren Rear Suspension Enhancement System # TTORTUN4 over the SumoSprings Solo Custom Helper Springs # SSR-612-47 for your 2017 Toyota Tacoma TRD Sport. The Timbrens have a much higher weight capacity at 6,000lbs versus the SumoSprings at 1,000lbs. This will give you a better ride level and stabilization when you are towing your car hauler. A Equal-i-zer Weight Distribution System # EQ37100ET may be a better option if you only need the suspension enhancement when you are...
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  • Recommended WD Hitch For A 2023 Airstream Basecamp 16X
    Hello Michael. So, we do not sell the Andersen WD hitch here, but it is something I am familiar with. I also just spoke with an associate of mine who has some experience using the Andersen WD hitch so I can definitely give you an honest opinion on it. What they say about it being easy to set up is true. Other than that, they really are not that great. The components seem flimsy, and it does not provide good sway control or weight distribution. I cannot say it is something I would recommend...
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  • Suspension Enhancement Recommendation for 2015 Coachmen Freelander 22 ft Class C
    Suspension enhancement would be your best option since you mentioned having an aluminum frame trailer. That we've found there isn't an aluminum frame trailer manufacturer who will state that you can use weight distribution with their trailers. They just put a different kind of stress on the trailer frame. So the best option I have would be the SuperSprings part # SSA22 which installs on the leaf spring you have now and gives you 2,200 lbs of additional suspension support.
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  • Can Andersen Ultimate Connection Part # AM3200 Be Used with 2016 Toyota Tundra
    As long as you have a set of fifth wheel rails installed in the bed of your 2016 Toyota Tundra the Andersen Ultimate Connection part # AM3200 can be installed and then attach to your fifth wheel pin box. For a set of rails confirmed as a fit for your 2016 Toyota Tundra you'd want the part # RP50084-58. This is a custom fit rail kit that would minimize drilling when compared to a universal one.
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  • What Is The Difference Between Timbren TABSOSR And TTORTUN4?
    Hello Jhon, thanks for reaching out. Both the Timbren kits you mentioned are going to fit the 2013 Toyota Tacoma. The difference is the application and the weight capacity. The # TABSOSR are intended for off-road applications and are rated for 3,600 lbs. The # TTORTUN4 are intended for typical on-road towing hauling application and they are rated for 6,000 lbs. What are you hauling with you Tacoma? A Camper or trailer? Reply on this page.
    view full answer...
  • Comparing Jounce-Style and Air Bag Enhancements for Off-Road Camping in a 2010 Toyota Tacoma
    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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  • How Much Space Should There Be with Timbren Active Off-Road Bumpstops On 2007 Toyota Tacoma
    The Timbren Active Off-Road Bumpstops part # TABSOSR which are a fit for a 2007 Toyota Tacoma are designed so that there is more space between the spring and frame to allow the suspension to articulate freely when off-road. If you're looking for a spring which is closer and provides support sooner you would instead want to go with the Timbren Rear Suspension Enhancement System part # TTORTUN4 which is designed to sit around 1/2" to 1-1/2" from the frame. If the truck has been lifted you...
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  • Comparing Timbren and SumoSprings for The Rear Suspension of a 2021 Toyota Tundra
    The main difference when comparing Timbren and SumoSprings for suspension enhancement is going to be the weight capacities. Timbren uses hollow rubber springs that is able to support more weight but they can cause a firmer ride. The SumoSprings are made of a durable microcellular urethane that will progressively increase capacity as the spring is compressed. This will offer a smoother ride as the springs will better absorb the shock but they do not offer the capacity and stability of the...
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  • Jounce Bumper Helper Spring Options for 2021 Toyota Tacoma
    Some 2021 Tacoma were equipped with 3 leaves in the springs, some with 4, so you'd just need to take a quick peek at what you have to determine which Timbren kit you'll need, as I have no way to look up how your truck is equipped. For a 4WD with 4 leaves in the spring pack, use # TTORTUN4, for 3 leaves use # T72FR. For 2WD vehicles with 4 leaves, use # T62FR or # T72FR for 3 leaves. This being said, the Timbren systems offer much more support than what you'd actually need to counteract...
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  • Recommended SumoSprings And Timbren Jounce Springs For A 2021 Grand Design Reflection 337RLS
    Hi Ryan, If your leaf springs sit on top of your axles then you'll need the SumoSprings Trailer Helper Springs w/ Line Relocation Bracket # SS26MV. If your leaf springs sit below the axles then you'll need the SumoSprings Trailer Helper Springs w/ Line Relocation Bracket # SS33HR. Timbren does offer a few different options for leaf spring suspensions but you won't be able to use both the SumoSprings and Timbrens because they both mount in the same spot. If your leaf springs sit on top...
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  • Height Of Timbren Springs and Vertical Wheel Travel Loss In 2019 Toyota Tacoma
    When installing any Timbren system on the 2019 Toyota Tacoma you should have about 1/2" to 1-1/2" between the frame and the spring after installation. You won't necessarily be losing wheel travel when you use a Timbren Rear Suspension Enhancement System on the Tacoma. I recommend either the # TTORTUN4 system if you have 4 leaf springs in the rear suspension or # TTORTUN4L if you have 3 leaf springs in the rear suspension. When you switch out the factory bump stops for the Timbren springs...
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    Image 1 for Image 2 for
  • Will RoadActive Suspension Enhancement Kit Fit a 2018 Toyota Tacoma
    Sorry to hear about your dissatisfaction with the Timbren # TTORTUN4 on your 2018 Toyota Tacoma. They are hollow rubber springs and can create a bumpy ride when you have a load on the truck and go over speed bumps. As for the RoadActive Suspension Custom Leaf Spring Enhancement Kit # RAS4514-SAT, which is the right kit for your '18 Tacoma 4WD with the axle below the leaf springs, your ride will not be as stiff as with the Timbrens. The RoadActive Suspension is really a full system which...
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  • Height of the Rubber Spring of the Timbren kit part # TTORTUN4 and # TORTUN4L
    I went out and pulled both the Timbren kit part # TTORTUN4 and # TTORTUN4L from our warehouse to measure them for you and found that they both sit exactly 3-3/4 inches tall.
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    Image 1 for
  • Recommended Timbren Suspension Enhancement System for 2010 Nissan Titan
    Since you are towing a travel trailer, you are going to want to use a Timbren system that enhances your rear suspension. Should your 2010 Nissan Titan be a 4 wheel drive model you would want # TNRTTN, and for 2 wheel drive models you'd want # TTORTUN4. This system is going to level out your ride and help reduce sag when hauling heavier loads. They install without requiring drilling and replace your axle's bump stops. I've included a photo showing what a Timbren looks like installed on...
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  • Recommendation for a Rear Suspension Enhancement for a 2004 Nissan Titan Pickup
    I have a solution that is the confirmed fit for your 2004 Nissan Titan. Unfortunately, the Air Lift AirCell Helper Springs that you asked about will not fit a 2004 Nissan Titan. These helper springs will only fit full-size Ford pickups. For your Nissan, I recommend the Timbren Rear Enhancement System, # TTORTUN4 for 2-wheel dive or # TNRTTN for the 4-wheel drive model Titan. The Timbren system will improve the suspension and handling of your loaded Nissan Titan. The Aeon rubber springs...
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  • Gooseneck Hitch and Suspension Enhancement Recommendation for a 2012 Toyota Tundra
    I have a solution for you that will give you both a gooseneck hitch for the bed of your 2012 Toyota Tundra and will give you suspension enhancement. But there isn't an air spring kit I can recommend for your truck to go with a gooseneck hitch since the install brackets would interfere. For suspension enhancement you would want the Timbren part # TTORTUN4 and then for a gooseneck hitch the # 9465-36 would work well. Timbrens are great since they don't require any routing of air lines or...
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  • Timbren Suspension Enhancement System for 2018 Toyota Tundra 4WD
    The Timbren Rear Suspension Enhancement System # TTORTUN4 is a great SES that fits your 2018 Toyota Tundra. The Timbren line of SES is really popular and there are several models available. The # TTORTUN4 features heavy duty rubber springs with a 6,000 lb weight capacity. The Timbren Active Off-Road Bumpstops # TABSOSR features a lighter duty rubber spring with a 3,600 lb weight capacity. Both products fit your vehicle and install in the same way, but the # TTORTUN4 is better if you expect...
    view full answer...
  • Will the Timbren Rear Suspension Enhancement System Fit a 2018 Toyota Tacoma with 3 Inch Lift
    The Timbren Rear Suspension Enhancement System will perform just as well on a vehicle that has a three inch suspension lift as a vehicle that is stock height. However, you will need to add spacers so that the Timbren's engage at the right time. If your 2018 Toyota Tacoma has a three leaf spring pack then you will want to use part # TTORTUN4L but if it has a four leaf spring pack then you will want to use part # TTORTUN4. For the spacer you can use the Timbren 1" Spacer For Raised Frame...
    view full answer...
  • Recommended Vehicle Suspension for 2014 Toyota Tundra Towing 5th Wheel Camper
    You are correct that air springs do not fit with your 2014 Toyota Tundra with a 5th wheel hitch mounted in the truck bed. I recommend going with the Timbren Rear Suspension Enhancement System, # TTORTUN4. This system will help the suspension on your 2014 Toyota Tundra when you are towing a 5th wheel. When the 5th wheel is hooked up, the weight will compress the rubber springs and stiffen the suspension to help level it. When driving with the 5th wheel, it will help reduce sway. With the...
    view full answer...


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