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

Timbren Suspension Enhancement System - Rear Axle

Part Number: TNRTTNB
In Stock
$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 Suspension Enhancement System - Rear Axle part number TNRTTNB can be ordered online at etrailer.com or call 1-800-940-8924 for expert service.
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Timbren Vehicle Suspension - TNRTTNB

  • Rear Axle Suspension Enhancement
  • Jounce-Style Springs
  • Timbren
  • Extra Heavy Duty

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
    • Allows the leaf spring ample movement while cushioning light loads
    • Becomes more rigid as more weight is added for great performance when you're hauling a heavy load
      • Increases stability
      • Reduces vehicle sag
  • Works independently - side-to-side adjustment
    • Helps compensate for off-center loads
    • Reduces body roll when swerving and turning corners
  • Acts as shock absorber, taking the brunt of bumps and rough roads
    • Extends the life of your vehicle's suspension
  • Includes 2 Aeon hollow rubber springs, custom-fit brackets, and hardware for a simple installation
    • Installs directly onto frame
    • No drilling required


Specs:

  • Load-leveling capacity: 6,000 lbs
    • Timbren springs will not increase your vehicle's weight-carrying capacity. Do not exceed the manufacturer's recommended weight limit.
  • 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.



NRTTNB Timbren SES with Aeon Hollow Rubber Springs - Rear Axle

Installation Details TNRTTNB Installation instructions

This Product Fits The Following Vehicles




Customer Satisfaction Score:

Ratings & Reviews

4.7

3516 reviews
5 Stars
(2775)
4 Stars
(472)
3 Stars
(111)
2 Stars
(75)
1 Star
(83)
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.

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Your company ships right away and very helpful web site easy to use have not installed yet but will let you know asap thanks for your help



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Works great even had my nephew buy them for his Dodge truck



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Definitely worked as advertised, very easy to install.



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Keeps truck level. Only down side is it makes for a harder ride when compressed



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This is a great product and greatly improves the ride of your vehicle.



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Easy install. Product arrived before delivery date. Can already feel difference when just driving. Will hook up camper in a few week to see the real results.



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Works great. Exactly the fix that I needed for my truck.



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The product worked out great... Did exactly what I needed it to do...Easy to put on..



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Fast delivery but missing hardware as advertised and pictured!



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It's still holding strong. Very noticeable through curves.



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Definitely prevents sag. My truck doesnt sag at all when towing my boat



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Work well when towing but slap a little when driving with no load



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installed them last week went on a trip they performed as advertiszed improved ride and stabilty very happy with them



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I have not installed these yet but they came delivered when promised and look like they will do the job I needed them for.



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Easy to install. Takes out the "harshness" over poor roads.



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Just finished the install and testing at a glance I would say the product is great very easy to install and helped with all things intended thanks.



by:

Needed this to lift and stabilize the rear end of my 2012 Sienna. Works very well!



by:

So far everything is working. Just as I though. The only complaint I have is the wait time that it took (12) days from the order date to when I receive the item.



by:

Customer service is top notch!! I recieved my order with an empty box! I called and they immediately shipped a new package out and I received it within days!



by:

Thanks Quinn F was very helpful



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See what our Experts say about this Timbren Vehicle Suspension

  • Recommended Helper Springs for 2012 Nissan Titan Pro-4X
    I'm really glad you asked because we only have one confirmed fit for the Pro-4x model. It is the Timbren Suspension Enhancement System - Rear Axle # TNRTTNB which is a jounce style enhancement rated for 6,000 lbs load support. It will give you a progressive support as it provides additional support as needed to increase stability while reducing body roll and vehicle sag. It will not change the factory ride when not hauling a load, but will engage as needed for payload and towing.
    view full answer...
  • What is Height of Timbren Rear Suspension Kit for 2021 Nissan Titan
    Hey Vadim, the height of the rubber spring of the Timbren kit part # TNRTTNB that you referenced is 7 inches.
    view full answer...
  • Comparing Timbren SES to SuperSprings Sumo Spring Solo Custom Helper Springs for 2017 Nissan Titan
    It's not quite a Ford vs Chevy or Nike vs Adidas argument since there are some functional differences between the suspension enhancements available for your 2017 Nissan Titan SL. The Super Springs Sumo Springs Solo Custom Helper Springs # SS95GR and Timbren SES # TNRTTNB are going to provide different levels of support. The Super Springs are going to do a better job of not affecting the unloaded ride quality since they get progressively stiffer as more weight is applied to them, where...
    view full answer...
  • Should I Use Timbren Or SumoSprings Suspension Enhancement On My 2020 Nissan Titan Pro-4X?
    You are on the right track in looking for jounce springs, as this will reduce your Titan's rear sag and also improve the overall handling of the truck while reducing body roll. Jounce springs are also very easy to install and require no maintenance, unlike air bags. When deciding between Sumo Springs and Timbren, it really comes down to how much weight you will be adding to the bed of your truck. It sounds like SumoSprings Solo Custom Helper Springs - Rear Axle # SS95GR is the kit for...
    view full answer...
  • Timbrens or SumoSprings for 2019 Nissan Titan
    Since Timbrens are notoriously harsher than SumoSprings and the truck will be unloaded for most of the year I would recommend the SumoSprings for your 2019 Nissan Titan with the part # SS95GR. This will give you the support you are looking for without destroying your unloaded ride quality.
    view full answer...
  • Which Timbren SES System for 2017 Nissan Titan SL
    For your 2017 Nissan Titan SL you will actually need the # TNRTTN and not the # TNRTTNB, which is only designed to fit on the 2017 Nissan Titan Pro-4x. The difference isn't the ride height, but the available mounting spots for on the two trucks are slightly different. This system will install on your rear axle and provide you with a great system to help reduce vehicle sag when towing or carrying heavy payloads.
    view full answer...
  • Timbrens or SumoSprings. Which One is Better for a 2020 Nissan Titan 4WD?
    I strongly recommend going with the SumoSprings Helper Springs item # SS95GR over Timbren's like item # TNRTTNB for your 4WD 2020 Nissan Titan. Both systems will support your rear end and keep your truck level while towing but you won't notice the SumoSprings when you are not towing. The Timbren's will be rough and stiffen up your suspension. You'll feel them going over every bump. I have linked a review video below.
    view full answer...
  • Installing Timbren Rear Suspension Springs on a 2021 Nissan Titan With Rough Country Lift
    The Timbren Suspension Enhancement System # TNRTTNB is designed to only fit a stock suspension height on your 2021 Nissan Titan. You can use the Timbren 1" Spacer # A25723-90AH00 to space out the Timbren for the Rough Country lift since they use lift blocks to gain your rear lift and are not using new leaf springs with different characteristics. We also have the Timbren 1/2" Spacer # TA25722-90P00 that can fine tune the height if needed.
    view full answer...
  • Air Springs or Timbrens for 2014 Nissan Titan Pro-4X With Equal-i-zer Weight Distribution System
    Using the Equal-i-zer Weight Distribution Hitch # EQ37100ET will be a great help to your 2014 Nissan Titan Pro-4X and a suspension enhancement is compatible with these systems. Between air springs and Timbrens the better option is the Timbren Suspension Enhancement System # TNRTTNB. These are designed specifically to fit your 2014 Nissan Titan Pro-4X and since suspension enhancement is only going to come into play on occasion with your weight distribution system, the Timbrens offer the...
    view full answer...
  • Timbren Suspension Enhancement Fit for 2020 Nissan Titan With 2-Wheel Drive
    I checked with Timbren for you, and while we do have a fit for a 2020 Nissan Titan with 2-wheel drive, the part # TNRTTNB is only a fit for the 4-wheel drive 2020 Nissan Titan Pro-4X. For your '20 Titan with 2-wheel drive, I confirmed with Timbren that part that fits your truck is the Timbren Rear Suspension Enhancement System # TTORTUN4. There will be no modifying needed, and the Timbrens will do a superb job of improve your Titan's handling and performance by supporting its suspension...
    view full answer...
  • Suspension Enhancement Recommendation for 2017 Nissan Titan 2 Wheel Drive
    For your 2017 Nissan Titan 2 wheel drive we have great suspension enhancement kits available like the RoadActive Suspension Kit part # RAS4611 but we do not have a Timbren kit or air bag kit that fits your truck due to it being 2 wheel drive. All of those fits are for the 4 wheel drive models. The RAS kit I mentioned really is a great option that I know you'll like. It gives you adjustable support like the air bag setups and is also not quite as harsh as some of the Timbren applications....
    view full answer...
  • Jounce Bumper Suspension Enhancement Recommendation for a 2021 Nissan Titan
    Thanks for reaching out and all of the information, Dusty! With everything you said, I believe the best suspension kits for your 2021 Nissan Titan will be the Timbrens: - Front # TFXF1004A - Rear # TNRTTNB The heaviest-duty SumoSprings for your truck is the Black Kit # SS95GR rated for 1,500 lbs. If you feel like you need more suspension help than that, the Timbrens are what you need to go with. The air springs and shock combination you referenced sounds like a good option, but that...
    view full answer...
  • Comparing The Timbren # TNRTTNB And # TNRTTN For A 2024 Nissan Titan SV
    Hey Mitchell, The Timbren Suspension Enhancement System # TNRTTNB is designed specifically for Pro 4x models so it wouldn't be the right fit for your SV. Both the # TNRTTNB and # TNRTTN (which would be a fit for your SV) have 5" tall springs. The # TNRTTNB uses HCS M8 x 50 x 1.25 Grade 8.8 zinc coated bolts and the # TNRTTN uses HCS M10 x 40 x 1.5 Grade 8.8 zinc coated bolts. These both have a 6,000lb capacity and will make a significant difference to your unloaded ride quality. I personally...
    view full answer...

Do you have a question about this Vehicle Suspension?


Info for this part was:

Employee Jeff D
Installed by:
Jeff D
Employee Jameson C
Expert Research:
Jameson C
Employee Jacob T
Video Edited:
Jacob T
Employee Dustin K
Video Edited:
Dustin K
Employee Chris R
Video Edited:
Chris R
Employee Wilson B
Updated by:
Wilson B
Employee Michael B
Updated by:
Michael B
Employee Carrie F
Updated by:
Carrie F
Employee Lincoln B
Updated by:
Lincoln B
Employee Daron K
Edited by:
Daron K
Employee Alex H
Written by:
Alex H

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