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  1. Vehicle Suspension
  2. Timbren
  3. Bump Stops
  4. Towing/Load Leveling
  5. Standard Duty
  6. Rear Axle Suspension Enhancement
THIS ITEM IS NOT A FIT FOR
2013 Nissan Altima
Timbren

Timbren Rear Suspension Enhancement System

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

2013 Nissan Altima

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2,400-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 TJRJK can be ordered online at etrailer.com or call 1-800-940-8924 for expert service.
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  • Reviews (6118)
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Timbren Vehicle Suspension - TJRJK

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

2,400-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 and vehicle-specific hardware for simple installation
    • Replaces axle bump stops on frame
    • No drilling required
  • Capacity: 2,400 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.



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

Installation Details TJRJK Installation instructions

This Product Fits The Following Vehicles




Customer Satisfaction Score:

Ratings & Reviews

4.7

3514 reviews
5 Stars
(2797)
4 Stars
(457)
3 Stars
(112)
2 Stars
(69)
1 Star
(79)
2,400-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:

Yes about one year ago i installed this product with excellent results so far.



by:

What a great product. This has made a night and day difference pulling a 5th wheel.



by:

Easy installation. Good quality.



by:

Very efficient and great to work with. Will definitely use your company again. Thanks



by:

Works pretty well. Does stiffen the factory ride considerably when not hauling a load.



by:

Just as overtired , they stiffened up the ride , plus no more sag in rear ended of truck .



by:

Worked great. My Tahoe no longer says in the rear. Can’t even tell a difference when I hook my trailer up.



by:

Installed in about 15 minutes,very easy.I pick up my new truck camper next week so I do not know how it works yet,but looks like it will work like its suppose too



by:

Fast shipping



by:

Easy install and work well on my 2500 S uburban



by:

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



by:

Shipping was fast, product looks to be well made.



by:

Easy to install and does not affect the ride till you have a load, then they help support the load. Good product!



by:

as expected,fast shipping



by:

I have always had a good experience with doing business with you



by:

Quick service and as described.



by:

Great service and quick shipping



by:

As always amazing customer service and products to match.



by:

I just installed them yesterday. Super easy, took maybe 25 minutes. Looking forward to towing my toyhauler soon.



by:

Very easy installation!



by:

I'm very happy with the fast service. Timbren makes quality parts and now my problems are solved. I get a smooth ride and the truck does not sag . Thank you



by:

Great cost effective way to keep truck level. Easy install! A 15 minute job. Does not affect empty ride quality. Extremely happy with the product and etrailer.com



by:

Fast delivery and easy installation



by:

Showed on time and easy installation. This is why I continue to be a loyal customer.



by:

Great Product, arrived quickly and packaged well.

Will be buying from them in the future.


25
3514
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See what our Experts say about this Timbren Vehicle Suspension

  • What is Height of Timbren Kit # TJRJK for 2023 Jeep Wrangler
    Hey Paul, so the overall height of Timbren kit part # TJRJK that you referenced is 4-1/4 inches. So you can use that dimension to come up with the amount of spacer needed or if you let me know the size of your lift I can figure it out from there as well. Is this a factory lift or is it aftermarket?
    view full answer...
  • Best Timbren Suspension Enhancement For 2024 Jeep Wrangler 4xe
    The best Timbrens for your 2024 Jeep Wrangler 4xe are the following: - Timbren Suspension Enhancement System - Rear Axle # TJRJK The Timbrens are a really nice choice because of how much they will help your Jeep's handling when you are towing or even just have a heavy load. The reason why is the Timbrens take the brunt of that added weight, engaging when needed to counteract sag and body roll, helping level your truck, stabilize it, and combat sway. Additionally, Timbrens do not require...
    view full answer...
  • Recommended Suspension Improvement for a Jeep Wrangler When Towing a Trailer
    Both the Timbren # TJRJK and the SumoSprings # CSS-1195R will help with sag and stability while towing. However, they will affect the ride when no towing as well. The Firestone Coil-Rite Air Helper Springs # F4173 are adjustable from 35 psi all the way down to 5 psi. This will give them up to 1,000 pounds of load-leveling capacity when filled, and then feel basically nonexistent when deflated. If you are still getting a lot of body roll when towing, or even when not towing, the SumoSprings...
    view full answer...
  • Recommended Timbren Rear Suspension Enhancement for 2015 Jeep Wrangler Unlimited with 4
    We have spacers that you can add to accommodate a 4" lift on your 2015 Jeep Wrangler Unlimited, but there are no Timbren kits available that come preset for a 4" lift. If your Wrangler Unlimited is a 4WD then I recommend going with the Timbren Rear Suspension Enhancement System # TJRJK. If you have a 2WD then you will want the part # TABSJRJK instead. You can accommodate your lift by choosing a combination of the following spacers for raised frame vehicles: 3/8" Bushing 1/2" Spacer -...
    view full answer...
  • What is the Difference Between the 2 Timbren Suspension Enhancements for a 2013 Jeep Wrangler
    It sounds like you already have the Timbren Front or Rear Suspension Enhancement System, part # TJFTJ, installed on the front axle of your 2013 Jeep Wrangler. This installs within the springs you already have. However, the Rear Suspension Enhancement System, part # TJRJK, is only for the rear. It also replaces the bump stops alongside the springs on the rear, not within them. This is the one for your rear since you already have the others on the front. I've linked to a video installation...
    view full answer...
  • Does Timbren Kit for 2015 Jeep Wrangler Unlimited Come with Install Instructions
    The part # TJRJK that you referenced does come with installation instructions. I attached a picture that shows the instructions for you to check out. Basically you just pry out the old bump stop with a pry bar and press the Timbren in place of it. This will give you additional suspension support at the rear of your 2015 Jeep Wrangler Unlimited when towing.
    view full answer...
    Image 1 for
  • Suspension Enhancement For 2016 Jeep Wrangler With 4 Inch Lift
    While there is a suspension enhancement option, there are no air spring kits due to the height of the spring, but if your 2016 Jeep Wrangler is a 4WD version, what you can use are Timbrens, along with 1 inch spacers: - Timbren Rear Suspension Enhancement System # TJRJK - Timbren 1" Spacer For Raised Frame Vehicles - 3/8" Bushing # A25723-90AH00 You would need a total of 8 spacers (4 on each side)
    view full answer...
  • Recommended Enhancement For a 2021 Jeep Wrangler Unlimited 4xe Rubicon That Sags When Trailer Towing
    When dealing with sag from a trailer I recommend using the Equal-i-zer Weight Distribution System # EQ37060ET which is rated for a trailer with a tongue weight of 200-600lbs and a total trailer weight under 6,000lbs. This will help you to level your 2021 Jeep Wrangler Unlimited Rubicon 4xe and will give you sway control to keep the travel trailer tracking straight behind you while towing. You will need the 1-7/8" 12pt Thin Walled Socket # ALL643216 to install the included hitch ball. The...
    view full answer...
  • Comparison Of Timbren Rear Suspension Enhancement System vs SumoSprings Solo Custom Helper Springs
    Both are great jounce-style systems that have similar functions. The Timbren Rear Suspension Enhancement System, Item # TJRJK, is designed to provide support and stability with vehicles that are carrying heavy loads. The Timbrens are a stiffer spring that are really designed for heavy lifting often associated with trucks and their loads and so they will be a "rougher" ride in your 2009 Jeep Wrangler Unlimited Rubicon. In contrast, the SumoSprings Solo Custom Helper Springs, Item # SSR-401-47,...
    view full answer...
  • Rear Suspension Enhancement Recommendation for 2008 Jeep Wrangler Unlimited with 4 inch Lift
    I have a suspension enhancement solution I can provide for your 2008 Jeep Wrangler Unlimited but the air bag style kits are not a fit with lifted vehicles. Instead you would want the Timbren kit part # TJRJK with the lift spacers # A25723-90AH00 for each inch of lift you have. So in your situation you would need a total of 8 for both sides.
    view full answer...
  • What Is Needed To Tow a Trailer With a 2015 Jeep Wrangler Unlimited
    According to the owner's manual for your 2015 Jeep Wrangler Unlimited, the towing capacity can range from 2,000 lbs to 3,500 lbs. The components that you listed (transmission cooler/upgraded suspension components) will certainly improve your towing experience however, in the eyes of the manufacturer the towing capacity will remain unchanged for the life of the vehicle no matter what parts are added. The other issue you are going to run into is that they do not make a trailer hitch for your...
    view full answer...
  • Rear Suspension Enhancement Option For A 2021 Jeep Wrangler Sahara 4xe With Lift Spacer In Coils
    Hello Kyle. The Air Lift 1000 Coil Helper Springs # AL60829 will not be compatible with the coil spring lift spacers on your 2021 Jeep Wrangler Sahara. As you said, it appears the spacers would obstruct the air line, so they would have to be removed in order to use the coil helpers. A better option would be to use the Timbren Rear Suspension Enhancement System # TJRJK. These will simply replace/upgrade the factory bumpstop. Timbren also offers spacers that can be used to compensate for...
    view full answer...
  • Actual Dimensions of Timbren SES Jounce Springs in Kit TJRJK
    Timbren rear suspension jounce spring kit # TJRJK is a confirmed fit on the 2014 Jeep Wrangler Unlimited 4WD. I went to our warehouse to measure these springs for you and found their overall end to end length is 4-1/4-inches and the diameter is 2-1/2-inches.
    view full answer...
  • Correct Airbags for a 2017 Jeep Wrangler Unlimited With Lift
    I do have an option for you but airbags won't be one if the lift uses aftermarket coil springs. The only option for a 2017 Jeep Wrangler Unlimited lifted would be the Timbren Rear Suspension Enhancement System part # TJRJK which will require spacers equal to the lift, part # A25723-90AH00.
    view full answer...
  • Will the Timbrens for a 2012 Jeep Wrangler Increase Towing Capacity
    The Timbren Rear Suspension Enhancement System part # TJRJK is an excellent option for a 2012 Jeep Wrangler. It will help when towing or hauling heavy loads so you don't have excess rear end sag which leads to issues with braking, stability, etc. I will however say that they won't increase towing capacity nor is there really any product that can do this. I must recommend you tow inside your vehicle's capacities but using these Timrbens will increase performance in doing so.
    view full answer...
  • Suspension Enhancement for 2014 Jeep Wrangler for Towing Heavy Trailer
    Suspension enhancement for your 2014 Jeep Wrangler like the Timbren # TJRJK that is a confirmed fit will do a great job giving you additional suspension support for towing up to the capacity for your vehicle but you should note that it does not allow you to tow beyond what your vehicle was rated for as there are other factors like braking, frame strength, cooling capacity, transmission rating, engine rating etc. This is why suspension enhancement while proving additional suspension support...
    view full answer...
  • Timbren Suspension Enhancement Recommendation for 2017 Jeep Wrangler with 2 inch Lift
    The Timbren kit part # TJRJK that you referenced is the correct kit for your 2017 Jeep Wrangler, but since you have a 2 inch lift you'll also need to use spacers to take up the additional space created by the lift. For that you'd want the # A25723-90AH00 for each inch of lift. So you'd need a quantity of 4 since you have 2 inches of lift per side of vehicle. I attached an install video for the Timbren for you to check out as well.
    view full answer...
  • Could Curt Triflex Replace Curt Venturer In 2015 Jeep Wrangler Unlimited
    Yes a proportional Curt controller like the part # C24VV could easily replace a # C74VV. It would be just a matter of unplugging the old controller and plugging in the new one. For suspension enhancement I would go with the Timbren kit part # TJRJK instead of an air bag kit because maintaining air pressure in bags can be a bit of a hassle and the Timbrens get installed and you never have to think about them again.
    view full answer...
  • How to Determine Timbren Helper Spring Fit for 2017 Jeep Wrangler JK With 3 inch Lift
    Because the # TJRJK is a friction fit into the factory cup where the bump stop fits, a spacer wouldn't work.. If you can provide me a measurement, they might have a fit. They'll need the height difference between the underside of the frame and the top of the rear axle while the vehicle is sitting on the ground. If you can reply with that information, I can check back with Timbren to see if they have a solution for you.
    view full answer...
  • Recommended Suspension Enhancement Option With Most Support for 2007 Jeep Wrangler
    The Timbren Rear Suspension Enhancement System part # TJRJK is an excellent option for a 2007 Jeep Wrangler. In fact, there are few others that will provide the level of support that they do. In regards to sag, the spring will sit around 1/2"-1" away from the contact point so the Jeep will sag around this plus 1/4"-1/2" for the weight of the trailer and gear. That said, these are just estimates but you should not have much sag at all with the Timbrens and they are really the best option...
    view full answer...
  • Suspension Enhancement Recommendation for 2017 Jeep Wrangler with 4 inch Suspension Lift
    The only suspension enhancement we can recommend for your 2017 Jeep Wrangler Unlimited is the Timbren kit part # TJRJK with the spacers # A25723-90AH00. Since you have a 4 inch lift you'd need a total of 8 of the spacers. There isn't a confirmed Air Lift solution we can provide.
    view full answer...
  • Is a Spacer Needed to Install the TJRJK on a Jeep with a 1 Inch Lift?
    If the leveling kit raised your rear end by an inch, you will need the 1 Inch spacer # A25723-90AH00. It should be noted that this is a single spacer so 2 will be needed to complete the install.
    view full answer...
  • Will Coil Spring Air Bags Work On a Lifted 2013 Jeep Wrangler Unlimited
    In order to help provide rear end support on a 2013 Jeep Wrangler Unlimited while towing you have a few options. That said, these options are all designed for the factory suspension. Therefore, if you have aftermarket coil springs there is no way for us to confirm fit for a set of air bags which install inside the coil springs. The only option we have to provide support is the Timbren Rear Suspension Enhancement System part # TJRJK because you can add multiples of the Timbren Spacers...
    view full answer...

Do you have a question about this Vehicle Suspension?


Info for this part was:

Employee Mike L
Expert Research:
Mike L
Employee Jameson C
Expert Research:
Jameson C
Employee Adam R
Expert Research:
Adam R
Employee Joshua S
Video Edited:
Joshua S
Employee Jacob T
Video Edited:
Jacob T
Employee Dustin K
Video Edited:
Dustin K
Employee Chris R
Video Edited:
Chris R
Employee Mary K
Updated by:
Mary K
Employee Wilson B
Updated by:
Wilson B
Employee Hannah L
Updated by:
Hannah L
Employee Michael B
Updated by:
Michael B
Employee Noah M
Updated by:
Noah M
Employee Carrie F
Updated by:
Carrie F
Employee Lincoln B
Updated by:
Lincoln B
Employee Jonathan Y
Video by:
Jonathan Y
Employee John S
Video by:
John S
Employee Robert C
Installed by:
Robert C
Employee Ed W
Test Fit:
Ed W
Employee David F
Test Fit:
David F

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