1. Vehicle Suspension
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  4. Rear Axle Suspension Enhancement
  5. Extra Heavy Duty
Timbren Suspension Enhancement System - Rear Axle

Timbren Suspension Enhancement System - Rear Axle

Item # TDRTT3500E
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Timbren Suspension Enhancement System - Rear Axle Extra Heavy Duty TDRTT3500E
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8,000-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. Lowest Prices for the best vehicle suspension from Timbren. Timbren Suspension Enhancement System - Rear Axle part number TDRTT3500E can be ordered online at etrailer.com or call 800-298-8924 for expert service.
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  • Reviews (2371)
  • Q & A (8)
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Timbren Vehicle Suspension - TDRTT3500E

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

8,000-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
      • Rides just as smoothly when you're not hauling a load
    • 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: 8,000 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


Reduced rear axle sag with Timbren suspension enhancement

Whether you're hauling heavy loads in your bed or cargo area or 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 your rear axle. Hollow rubber springs are bolted to the bottom of the bracket and hang down to where the bottom of the leaf 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.


Action 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.


Trailer swaying as it is towed behind a truck

Because your 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 SES

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.



DRTT3500E Timbren SES with Aeon Hollow Rubber Springs - Rear Axle

Installation Details TDRTT3500E Installation instructions

This Product Fits The Following Vehicles





Customer Reviews

Timbren Suspension Enhancement System - Rear Axle - TDRTT3500E

Average Customer Rating:  4.7 out of 5 stars   (2370 Customer Reviews)

8,000-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.

- TDRTT3500E
by:
2020 Ram 2500

Installed on a 2020 Dodge 2500. The ride when empty is awful. Like riding in a wagon it is so stiff. I took out the round disk to give a little play between the stop and diff. Loaded my 4 Wheeler on a trailer and it was terrible. I hate to hook up my 34 foot toy hauler. I'm afraid the truck will beat me to death, it is so stiff. Therebis absolutely no give here. I am surely disappointed and will remove these and try something else. Air bags 896706



- TDRTT3500E
by:
2015 Ram 2500

Easy to install. Pickup remained level with loaded trailer. Got exactly what I wanted. 856991



- TDRTT3500E
by:

Product still working great. 704857



- TDRTT3500E
by:

Awesome thank you so much I haven't hooked my trail or up yet 668111



- TDRTT3500E
by:

Super easy to install, let's see how long they last. The local truck camper dealer says he has been installing them for 10 years and no failures. 647739



- TGMRCK25D
by:

Review from a similar Aeon Spring System in Vehicle Suspension


this is the second set of Timbren springs I have purchased, the first set was on my Ford Raptor, they took all of the sag and sway out of pulling my boat. I have this set on my 2015 GMC Denali 2500HD, I pull a 42 ft. 5th wheel and the Timbren's take all of the sag and sway out, these are in my opinion the best product I have purchased for my truck. 683687


Comments
this is still an amazing product! works as good today as the day I installed it. I recommend this to all my friends.
John G - 08/12/2020

97151

- TDVR05096
by:

Review from a similar Aeon Spring System in Vehicle Suspension


I carry 1400 pounds of tools and supplies in my NV200. These helped carry the load, along with heavier shocks. Very happy! 691745



- TFRTT350E
by:

Review from a similar Aeon Spring System in Vehicle Suspension


5 stars. Easy to install and made a big difference when pulling a 9k pound travel trailer. I would recommend it to anyone pulling a trailer. Kept it from sagging and level. 699184


Comments
Awesome and still working
02 F - 09/09/2020

98748

- TDVRRT
by:

Review from a similar Aeon Spring System in Vehicle Suspension


Installed this on my 2009 Caravan because when I had a hitch mount 4-bike platform rack hanging off the back and was loaded with camping gear and family, the rear suspension was terrible, it would bottom out, and my headlights pointed up so that everyone would flash their brights at me. New shocks helped, but did not solve the problem. This product did fix the problem and I am very happy. I was concerned about the feel when the van us unloaded, but this has not been an issue. I highly recommend this product. 796869



- TFRF53A
by:

Review from a similar Aeon Spring System in Vehicle Suspension


Delivery by etrailer was fast. Their advice as to proper application of the Timbrens saved me lots of money! 749745



- TGMFK25D
by:

Review from a similar Aeon Spring System in Vehicle Suspension


I first put the Timbrens on the rear to help stop bouncing and porpoising on highways and bridge ends when towing. The rears have a gap and do not touch the springs until the truck is loaded, working great and keeping a smooth unloaded ride. The front Timbrens fit snugly and touch all the time. The ride is firm and a bit harsh with my unloaded truck having a snow plow spring option. When my trailer 30 ft trailer is hooked up, the front of the truck is slightly lighter. Towing with the Timbrens is nice and the bounce and rebound porpoising is very controlled. I would like the front Timbrens to be a little softer when the truck is unloaded, but I think these units are a nice add-on for better control, safety, and preventing damages. I had the fronts installed at the shop when rotating tires and a front end alignment. The rears installed easily. 691475


Comments
They have worked out great when towing my 30 ft trailer. We took a coast-to-coast trip across the northern USA and into Canadian Rockies and excessive bouncing was controlled. I still would like the front to be a bit shorter and not always touching, so the unloaded ride would be less harsh.
Greg B - 08/20/2020

97600

- TGMRYS4
by:

Review from a similar Aeon Spring System in Vehicle Suspension


So far they look great. I will put on this weekend and see how they work with my travel trailer. 476068



- TDR1500DS
by:

Review from a similar Aeon Spring System in Vehicle Suspension


Doesn't get any easier for an install. A jack, some soapy water and a couple pieces of 2x4. In about 5 minutes you're done. Took out almost all sag when I dropped my travel trailer on the ball. Great addition to the suspension. 488109



- TDR1500DS
by:

Review from a similar Aeon Spring System in Vehicle Suspension


Not sure these were the best thing for my Ram 1500 pulling a 5th wheel. On some roads get a lot of bucking. Just ordered a set of Air Ride 5000's to try next. Larry T 617920



- TFRTT350F
by:

Review from a similar Aeon Spring System in Vehicle Suspension


These arrived as scheduled. The look good, well made. On my way out to install them now. The will get tested later today on the way to the lake. 703241



- TDR1500DS
by:

Review from a similar Aeon Spring System in Vehicle Suspension


Very happy with my timbrens and quick shipping. Added these to a 2013 2500HD 4X4. Quick and simple to install. improved ride quality and takes the squat out when pulling a gooseneck trailer. Very happy and would recommend to anyone wanting to improve quality of ride height. 493335



- TDR1500DQ
by:

Review from a similar Aeon Spring System in Vehicle Suspension


This was ordered because the truck seemed overloaded with just s few items. I haven't installed it yet but will let you know how it works after I do The shipping and packing were excellent and arrived quickly. 420483


Comments
Working great.
Glenn L - 08/15/2018

42324

- TDR1500DS
by:

Review from a similar Aeon Spring System in Vehicle Suspension


Great product. 597716



- TTORTUN4
by:

Review from a similar Aeon Spring System in Vehicle Suspension


I bought these as a replacement for "air bags" which I had two different sets, which failed over 10 years. i would say this product is helpful with pulling a trailer and lighter loads but from time to time I haul heavier loads and this product doesn't offer as much help/support as the air bags. This product is a little cheaper and if they don't weaken over time they will be a help. I have added additional leaf springs to two different pickups but then you end up with a stiffer ride full time. 421383



- TGMRCK25D
by:

Review from a similar Aeon Spring System in Vehicle Suspension


I INSTALLED THE TIMBRENS ON 7-5-12 AS PER PREVIOUS REVIEW. I TRIED THEM TODAY PULLING MY 35 FT. 5TH WHEEL.THESE THINGS ARE WORTH EVERY PENNY,VAST IMPROVMENT. THE TRUCK HANDLES BETTER,SITS BETTER,RIDES BETTER UNDER LOAD. GOOD JOB ,ETRAILER 50638



- TFR250SDF
by:

Review from a similar Aeon Spring System in Vehicle Suspension


Fast shipping 400467



- TFR1504E
by:

Review from a similar Aeon Spring System in Vehicle Suspension


Rear suspension pads work great. Ride is still like factory with no load unless driving over a big bump at high speed. When towing a 32 foot travel trailer the sag in back end of truck is greatly reduced with a lot more control. Easy to install. The downside is when truck is full with passengers and not towing anything the added weight makes the ride rougher. Shipped on time. 575558



- TFR250SDF
by:

Review from a similar Aeon Spring System in Vehicle Suspension


I have a Timbren rear suspension system on my 1982 Chevy truck that I still own, and after 20 years they still work fine. This latest set installed easily on my 2001 F-250 and they work just as well with and without a load. 440182



- TDR1500DQ
by:

Review from a similar Aeon Spring System in Vehicle Suspension


Have not tested it out yet, but the installation took about 15 minutes by myself, looking forward to trying them out with my 28ft enclosed trailer. You will need a block of wood under them when you let the jack down to seat them in the cups fully there is no way you can snap them in by hand, the video had that great suggestion 199076



- TGMFK25S
by:

Review from a similar Aeon Spring System in Vehicle Suspension


I ordered timbrens for the front and rear of my chevy 2500. I have a 2000 lb truck camper and I wanted something to help carry the load a little better. I had no idea that my front bump stops had worn away to almost nothing until I installed these. They have worn well and performed well so far. 628835


Comments
Still working great. No problems. Really happy I didnt waste the money on airbags.
Josh - 04/16/2020

73355
25
2691
Show More Reviews

Ask the Experts about this Timbren Vehicle Suspension

  • Will the Timbren Suspension Enhancement System Fit a 2015 Ram 2500 With Factory Air Suspension
    Yes, the Timbren Suspension Enhancement System is one of the very few suspension enhancement options that you have that will work on a 2015 Ram 2500 with the factory air suspension. That said, I would actually recommend the part # TDR2500D for your truck instead of the part # TDRTT3500E as these are more designed for service trucks or those with an in-bed camper.
    view full answer...
  • Recommended Timbren Suspension Enhancement for 2018 Ram 2500
    Since you will be hauling a slide-in camper on your 2018 Ram 2500 you will want to go with the 8,600 lb Timbren # TDRTT3500E. I checked with Timbren and their recommendation is if you have a slide-in camper the best option is the severe service kit, as that will give you the best stability for your application.
    view full answer...
  • Timbren Recommendation for 2016 Ram 2500 with 2,600 lb Slide In Camper
    For the weight of your slide in camper the heavier duty Timbren kit part # TDRTT3500E that you referenced would be the way to go. This can provide up to an additional 8,000 lbs of suspension support so it will work well for your application.
    view full answer...
  • Best Sway Control Suspension Enhancement for 2015 Ram 2500 With Truck Bed Camper
    When it comes to carrying a truck bed camper, I always go with Timbren Suspension Enhancement Systems over the SumoSprings Custom Helper Springs similar to the # SSR-312-54 . With that being said, I think the better solution for your 2015 Ram 2500 are the Timbren # TDRTT3500E, since they are specifically designed for trucks carrying truck bed campers. The Timbren # TDR2500D would also work but are meant more for carrying heavy payloads and may not provide as much body roll dampening. The...
    view full answer...
  • Which Timbren SES Do I Need for a 2017 Ram 2500
    The difference between the Timbren # TDR2500D and the # TDRTT3500E is that the TDRTT3500E are designed for commercial service trucks which will have a more beefy suspension system already and a slightly different frame. The TDR2500D is designed for the passenger vehicles like your 2017 Ram 2500, so this would be the Timbren SES you're looking for. Whether or not you have the off-road package on your 2017 Ram 2500 won't have any effect on which Timbren system you're using, so there's nothing...
    view full answer...
  • Recommended Timbren Suspension Enhancement for 5th Wheel Towing with a 2015 Ram 2500 4x4
    Yes, the Timbren suspension enhancement system (SES) jounce-style springs will help to level your 2015 Ram 2500 when you are under a load. The correct part you want to use is # TDR2500D as the other part for the rear suspension, part # TDRTT3500E, is designed for service vehicles that are under a constant heavy load. I have attached a review video for the Timbrens as well as a photo that a customer sent in of this same system installed on their 2014 Ram 2500 for you to reference. One...
    view full answer...
  • Frame Mounted Camper Tie Downs for a 2018 Ram 2500 with Factory Nerf Bars and Trailer Hitch
    If your 2018 Ram 2500 came with a factory installed trailer hitch which I can only assume it did then the correct set of TorkLift Custom Frame-Mounted Camper Tie-Downs for you is part # TLD2127 (front) and part # TLD3109 (rear) for steel or part # TLD2127A (front) and part # TLD3109A (rear) for aluminum. These are both no-drill options. If you have the Mopar rear-mounted kick out steps that are mounted under the bumper they will need to be removed. For a set of locking turnbuckles to...
    view full answer...
  • Suspension Helper Springs for a 2015 Ram 3500 4x4 Towing 5th Wheel Toy Hauler w/5K Pin Weight
    For your 2015 Ram 3500 4x4 and your heavy toy hauler trailer I strongly advise going with a heavy duty option for rear helper springs. A light or medium duty just won't offer the support that you will need for this particular trailer. For SumoSprings the heavy duty part for your truck is # SSR-302-54. For Timbren springs I recommend using # TDR3500CA which is rated for 8,600 pounds. The one you mentioned, # TDRTT3500E, is for truck models turned into service vehicles and utility...
    view full answer...

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Info for this part was:

Edited by:
Leah B
Expert Research:
Jameson C
Video Edited:
Chris R
Written by:
Mary E
Updated by:
Sarah W
Test Fit:
Shane H
Video by:
Jonathan Y
Video by:
Michael B
Installed by:
Robert C

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