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  1. Vehicle Suspension
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Timbren Suspension Enhancement System - Severe Service - Rear Axle

Timbren Suspension Enhancement System - Severe Service - Rear Axle

Our Price: $373.07
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Vehicle Suspension

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8,000-lb Capacity hollow rubber springs sit above the rear axle to help stabilize and level your vehicle. Provides a comfortable ride by absorbing road shock and improving stability. Ideal for trucks with slide-in campers or an in-bed salt spreader. Great Prices for the best vehicle suspension from Timbren. Timbren Suspension Enhancement System - Severe Service - Rear Axle part number T94VR can be ordered online at or call 1-800-940-8924 for expert service.
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Timbren Vehicle Suspension

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

8,000-lb Capacity hollow rubber springs sit above the rear axle to help stabilize and level your vehicle. Provides a comfortable ride by absorbing road shock and improving stability. Ideal for trucks with slide-in campers or an in-bed salt spreader.


  • Improves suspension, handling, and safety
    • Ideal for trucks with slide-in campers or an in-bed salt spreader
  • 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
  • Includes 2 Aeon hollow rubber springs, vehicle-specific brackets and hardware for simple installation
    • Replaces axle bump stops on frame
    • No drilling required


  • Capacity: 8,000 lbs
    • Do not exceed the vehicle's weight-carrying capacity
  • 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.

DRTT Timbren SES with Aeon Hollow Rubber Springs - Rear Axle - Severe Service

Item # T94VR

Installation Details T94VR Installation instructions

This Product Fits The Following Vehicles

Customer Satisfaction Score:

Customer Reviews

Timbren Suspension Enhancement System - Severe Service - Rear Axle - T94VR

Average Customer Rating:  4.7 out of 5 stars   (5572 Customer Reviews)

8,000-lb Capacity hollow rubber springs sit above the rear axle to help stabilize and level your vehicle. Provides a comfortable ride by absorbing road shock and improving stability. Ideal for trucks with slide-in campers or an in-bed salt spreader.

Dodge Ram Pickup

2022 Ram 3500, 30 minute install time, great product. Hooked up camper without sway bars and only squat 3/4 inch, where before 4 to 5 inches. Recieved product in 3 days with etrailer staff sending me numerous emails. Great job to etrailer staff. Thanks


Shipped in their flimsy packaging which cannot handle the UPS truck. Box broke open, UPS taped it and all the hardware is missing. Called etrailer and said I needed hardware asap. Now three days later and nothing. I have a trip on Monday. Very disappointed.


Had a problem at post office with address label so they didn’t except the first delivery called and they re shipped immediately no questions asked,which was awesome! Second time they made it only to find they shipped the brackets only, once again called and shipped the other immediately, so customer service is great,which is rare these days! Would recommend ordering from them to anyone!


Didn't come close to needing the rubber discs that come in kit. Kind of a waste as these are somewhat expensive. What I used of kit seems to work fine.



Very good. Much prefer over shim type in leaf springs.

Etrailer Expert

Mike L.


@Wendell We're happy to hear that your # T94VR Timbren helper springs are still working well for you!


The installed very easily and without incident. However, after the first outing (about 1000 mi on paved roads) the ride quality proved to terrible that I removed them. They solved the sway problem I had but rear suspension rebound was so harsh I was afraid the truck frame was likely to be damaged. It was like having no suspension at all in the rear.


Very good quality and took less than 30 minutes to install. I tow bumper pull RV's and a 5th wheel. Can't wait to tow 1 and see how it works.



Works great. I also have 1 on a 99 2500 Silverado. Thats why I purchased this one. You dont know you have it until you hook up a trailer or load something in the pickup. Then it just works. I will definitely continue to purchase one with each pickup I purchase.


Easy installation in about 40 minutes. On heavy truck with dump body and hoist the install has no gap between SES and axle. This is not effecting the empty ride and should definitely improve the stock suspension sag when loaded. Very happy!

2022 Ram 3500

Easy installation. Works great.


the product was very easy to install, but I was very dissatisfied with the ride of the truck after installing. The rubber distorted and there was almost metal contact with the bolt holding the spacers in place with the real axle housing. We have replaced your product with an air ride suspension which I am extremely happy with. I would not recommend this product to be used.

2016 Dodge Ram Pickup

So I recently had two product purchases from etrailer, my Timbren load suspension upgrade and my truck bed camper frame mounted hold-downs, both to be installed on my 2016 3500 Ram. The installation and performance of both of these products went very well. I received great phone support from etrailer operators, as my buddy and I have in the past. It was my buddie Mikie who originally recommended your Company from numerous purchases he has made with you.


Easy to install. Took 20 minutes without air tools

2014 Ram 3500

For all intent they appear pretty good and they were very easy to install. However I haven’t had the chance to see how they work under load. All of the input from RVers my wife found on YouTube has been positive.


Arrived early, thank you.


Very knowledgeable and helpful with my purchase. Followed up to make sure everything was fine. Great experince.


It looks like the product I received was used. Not too excited about that.

Etrailer Expert

Sierra K.


Customer Service will reach out to you.



Etrailer Expert

Jenny N.


You mentioned that it was horrible and I wanted to see if you could explain in more detail what you mean.





Great ptoduct. Does what it's suppose to do.





fast service good product easy to insta ll

2016 Ram 3500


Show More Reviews

See what our Experts say about this Timbren Vehicle Suspension

  • Timbren Suspension Kit Recommendation for 2014 Ram 3500
    The correct Timbren suspension kit for your 2014 Ram 3500 4x4 is the kit part # T94VR which we know is a confirmed fit for your truck and will work well.
    view full answer...
  • Height Of Timbren Rear Suspension System # T94VR For A 2021 Ram 3500
    Per Timbren The Suspension Enhancement System # T94VR comes with a 1 inch spacer, so with the included spacer the suspension system will be 7-1/4 inches, without using the spacer it is 6-1/4 inches. The system # T94VR does require at least 1/2 inch of space under them when installing. I attached a review video link below.
    view full answer...
  • Recommended Suspension Enhancement for a 2016 Ram 3500 w/ Air Ride Suspension
    Yes, it will. The Timbren Suspension Enhancement System item # T94VR is compatible with your 2016 Ram 3500's air ride suspension. These springs fit all 2WD and 4WD Ram 3500 models including the cab and chassis. I have linked the installation instructions below.
    view full answer...
  • Fit of Timbren T94VR Helper Springs on 2020 Ram 3500 Cab/Chassis
    The Timbren # T94VR is a fit for 2WD and 4WD models of the 2020 Ram 3500 Cab/Chassis, as confirmed by Timbren. This system is ideal for heavy duty applications like tow trucks or trucks that carry slide-in campers or salt spreaders. If you click the provided link, you can see a product demonstration video.
    view full answer...
  • Best Suspension Enhancement For 2006 Dodge Ram 2500 For Truck Bed Camper
    For your 2006 Dodge Ram 2500 with a slide-in truck camper, the best suspension enhancement is from Timbren, and is their heavy-duty kit, which is the following part number: - Timbren Suspension Enhancement System # T94VR The # T94VR is made specifically for consistent heavy loads like a camper due to its strength and 8,000 lb capacity, which is more than any other option. These will take the brunt of the added weight from your camper, engaging to counteract sag and body roll, helping...
    view full answer...
  • What is the Difference Between my Payload/Cargo Capacity and Towing Capacity
    There seems to be a bit of confusion here, which I'll try to clear up. There are 3 main capacities related to the weight your vehicle can handle that you generally want to know; your payload (cargo) capacity and towing capacity are going to be two different ratings, and your truck will also have a combined weight rating (GCWR) which is the maximum combined weight of the truck, payload (cargo) and trailer. From what I was able to find with my research, the 2012 Ram 2500 with the 6.7L Diesel...
    view full answer...
  • Height of Timbren Rear Suspension Enhancement System T94VR For 2015 Ram 3500 Cab & Chassis
    I checked with Timbren, and these come with a 1 inch spacer, so with the spacer, the height of the kit Timbren Rear Suspension Enhancement System # T94VR is 7-1/4 inches; without the spacer it measures 6-1/4 inches. You mentioned having 6 inches, and I'm not sure if you meant 6.25, but the # T94VR do require at least 1/2 inch of space under them so they would seem to be too big for your 2015 Ram 3500 cab and chassis. Another option to consider that will help with sag is from SuperSprings: -...
    view full answer...
  • Recommendation for Suspension Enhancement on a 2015 Ram 3500 4x4
    Great question. Suspension Enhancement Sytems (SES) are intended to assist suspension in good working condition, but will not correct any bowing in your axle or increase the towing capacity of your vehicle. Assuming your vehicle suspension is in good shape and your vehicle and hitch are rated to carry the 25,000 pounds, you would definitely benefit by adding an SES. Both the Timbren SES and the Firestone Ride-Rite Air Helper Springs are similar in that they both use convoluted springs to...
    view full answer...
  • What Is The Warranty On Timbren Vehicle Suspension, # T94VR
    The warranty on the Timbren Vehicle Suspension, # T94VR, is limited lifetime warranty. The parts are warranted against defects in workmanship and materials, under normal use and service, for the life of the vehicle on which the kit was originally installed. Severe use vehicles like tow trucks, dump trucks, and snowplow trucks have a 5-year or 250,000 mile warranty. The warranty is only on parts it does not include shipping or labor. The Timbren # T94VR is designed to fit 2003 to 2010...
    view full answer...
  • Does the Pin Weight of a 5th Wheel Trailer Count Towards the Payload Capacity
    You're correct that the pin weight of your trailer is going to take away from the payload capacity, since that weight is going to be over or slightly forward of the rear axle of your truck and also correct that it is typically around 18- 20% of the GVWR of the trailer. The payload also gives you 150-lbs that is not considered (the average male driver) so it's technically 150-lbs more than what it says. If you have a 10000-lb trailer, the tongue weight should be around 1800-2000-lbs (you...
    view full answer...
  • Recommended Timbren Rear Suspension System for 2011 Ram 3500 Towing a 5th Wheel Trailer
    I assume you mean Timbren # T94VR. This kit is designed for heavy-duty service trucks like tow trucks. So for your 2011 Ram pulling a fifth wheel trailer I recommend the other Timbren, part # TDR3500CA. This kit has an 8,600 pound capacity and will certainly help your truck with heavy loads.
    view full answer...
  • Helper Springs for a 2014 Ram 2500 Diesel with 5th Wheel Prep Package
    For a 2014 Ram 2500 the only Timbren system that is listed is # TDR2500D. The other one you mentioned, # T94VR, is designed for 3500 models and is rated much higher that you would need at 12,000 pounds. System # TDR2500D is rated for 8,600 pounds but considering that the pin weight of the trailer will be much lower than this that 8,600 pounds is more than enough. The springs install on the bottoms of the truck frame rails so they will not interfere with the 5th wheel prep package on your truck.
    view full answer...
  • Correct Timbren Suspension Enhancement for a 2019 Ram 3500
    The correct Timbren Rear Suspension Enhancement System (SES) for your 2019 Ram 3500 pickup should be part # TDR3500CA because the other option, part # T94VR, is for Severe Service vehicles like tow trucks. This kit has an 8,600 lb capacity and doesn't require any drilling for the installation, but please note that it will not fit if you have the factory Air Suspension system. Another thing to remember is that this will not increase the weight capacity of your pickup as it is designed to...
    view full answer...
  • Recommended Timbren Rear-Axle Jounce Spring Kit for 2011 Ram 3500 Dually Diesel Towing Car Hauler
    For your 2011 Ram 3500 dually diesel that is towing your 48-foot car hauler I suggest the Timbren kit # TDR3500CA. This kit will work with (or without) overload springs and its 8600-lb load rating means it will have the correct capacity to stiffen your rear suspension without creating new problems. The 8600-lb-rated kit # TDR3500CA will provide plenty of support to handle the substantial tongue weight of your enclosed car hauler trailer. I do not recommend the higher-rated kit # T94VR...
    view full answer...
  • Rear Suspension Enhancement Recommendation for 2016 Ram 3500 Towing 25k Trailer
    For the amount of weight you are towing with your 2016 Ram 3500 I would recommend the heavy duty Timbren kit for your truck part # T94VR. This will provide up to 12k of additional suspension support which will help your truck that is pretty near it's towing capacity. This won't give you additional capacity beyond what you truck is rated for, but it will help with the sag quite a bit.
    view full answer...
  • How Do I Minimize Body Roll On 2020 Ram 3500 While Towing 5th Wheel
    Yes, the Timbren Rear Suspension Enhancement System, # T94VR will enhance your current suspension reducing the body roll you are currently experiencing. With the Timbren Suspension Enhancement System, each hollow rubber spring works independently to support the driver's or passenger's side of the vehicle. Each spring is activated when it is needed, so body roll is greatly reduced. This is a great option for the price. I suggest you consider the Roadmaster Rear Anti-Sway Bar, # RM73FR....
    view full answer...
  • Recommended Timbren Suspension Enhancement For 2008 Dodge Ram 3500 With Salt Spreader
    Based on the fact that you are concerned about the ride quality, and you keep the truck unloaded in the summer, I would recommend the # TDR3500CA over the severe duty # T94VR. The # TDR3500CA still has a high capacity at 8,600 lbs for your salt spreader but does not have the same Severe Service kit designation and design as the # T94VR. It is likely you will still see some difference compared to before the installation of the jounce-style springs, but it will not have the same impact as...
    view full answer...
  • How Much Support Do the Timbren Rear Suspension Enhancement Systems Add on 2019 Ram 3500
    There are two different Timbren Rear Suspension Kits available for your 2019 Ram 3500. The Timbren # T94VR will provide 8,000 pounds of load leveling support and the Timbren # TDR3500CA features an even higher capacity of 8,600 pounds. Any aftermarket suspension enhancement system, including the Timbrens, will not actually increase the capacity of your Ram 3500. The listed capacities are simply what the springs themselves can handle. If the payload capacity of your Ram is lower than this...
    view full answer...
  • Comparing Timbren Rear Suspension Enhancement Systems for a 2019 Ram 3500
    The correct Timbren Rear Suspension Enhancement System for a 2019 Ram 3500 is part # TDR3500CA. The Timbren Rear Suspension Enhancement System part # T94VR is for trucks with a constant heavy load like if you had a truck bed camper or service bed instead of standard bed. These springs are engaged constantly and not something you would really want on a daily driver. The capacity is a bit confusing I'll admit but rest assure, part # TDR3500CA is what you want for general use and towing.
    view full answer...
  • Recommended Hitch for a 2023 Subaru Crosstrek Hybrid
    To add a hitch to your 2023 Subaru Crosstrek Hybrid, I recommend the EcoHitch Stealth Trailer Hitch item # 306-X7365. This hitch is custom fit and bolts to your Subaru with included hardware. This is a class III hitch with a 2" receiver. It has a 525 lbs tongue weight capacity, which will be more than enough to handle your bike and bike rack. I really like this hitch because the crossbar is completely concealed behind the rear bumper and the 2" receiver is all that is visible while you...
    view full answer...
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  • Is Replacement Hardware Available for Timbren Suspension Kits
    Since replacement parts are not available for Timbren suspension systems, the only solution is to purchase the complete kit, which for your 2019 Ram 3500 is part # TDR3500CA. This fits all models, including your 4WD Tradesmen model with dual rear wheels. Along with the rubber springs, the kit includes mounting brackets, spacers and all hardware necessary for installation, as shown in the attached photo. Purchasing a new SES kit is ideal because it allows you to take full advantage of the...
    view full answer...
    Image 1 for
  • Which Timbren Rear Kit the 6k OR 8k for my 2011 Ram 2500 Mega Cab Towing 10-14k lbs.?
    In your case I really like the Timbren Rear Suspension Enhancement System part # T94VR these have the 8K capacity which will help to take a lot of the stress and strain off of that rear suspension set up. Towing 10-14k can cause wear issues relatively quickly and these will do a great job reducing that drastically for you. If you were in the 5-10k or lower towing range I would lean to the lighter versions part # TDR2500CA these also do a great job of taking the abuse so the suspension...
    view full answer...
  • Correct Timbrens for 2004 Dodge Ram 2500 with Slide-In Camper
    The correct Timbren kit for a 2004 Dodge Ram 2500 with slide-in camper is the Timbren Rear Suspension Enhancement System part # T94VR. I confirmed this with Timbren for you. This is the model designed for service applications.
    view full answer...
  • Recommended Suspension Enhancement For A 2012 Ram 2500 With 4.5" Of Sag
    Since you're getting 4.5" of squat and you won't always be towing your trailer the best option to maintain a good unloaded ride quality is going to be air springs. For your 2012 Ram 2500 4WD I recommend the Air Lift LoadLifter 5000 Air Helper Springs # AL57295. These springs have a 5,000lb capacity and psi range from 5 to 100 psi. While loaded up you can increase the psi to reduce sag and help level out your ride, and when unloaded you can reduce the psi to prevent a negative ride quality....
    view full answer...

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Info for this part was:

Employee Mike L
Expert Research:
Mike L
Employee Dustin K
Video by:
Dustin K
Employee Chris R
Video by:
Chris R
Employee Wilson B
Updated by:
Wilson B
Employee Carrie F
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Carrie F
Employee Bethann B
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Employee Daron K
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Employee Alex H
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Employee Bradley B
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