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  1. Vehicle Suspension
  2. Timbren
  3. Bump Stops
  4. Towing/Load Leveling
  5. Rear Axle Suspension Enhancement
  6. Extra Heavy Duty
THIS ITEM IS NOT A FIT FOR
2005 Buick Century
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Timbren

Timbren Rear Suspension Enhancement System

Part Number: TDR3500
In Stock
$398.07
Retail:$468.32
You Save: $70.25
Vehicle Suspension
Not Confirmed to Fit

2005 Buick Century

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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 TDR3500 can be ordered online at etrailer.com or call 1-800-940-8924 for expert service.
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Timbren Vehicle Suspension - TDR3500

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



DR3500 - Rear Suspension Enhancement System with Aeon Hollow Rubber Springs by Timbren

Installation Details TDR3500 Installation instructions

This Product Fits The Following Vehicles




Customer Satisfaction Score:

Ratings & Reviews

4.7

3508 reviews
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:

had this product before. left it on my old truck when I traded. Now I have to replace it, really like what it does for my towing a travel trailer. just have to find time to put it on. speedy delivery arrived undamaged, which is nice.



by:

Very easy to install



by:

They definitely reduced sway and lean when driving. But also seems like you really feel every bump and increase road noise?
I assume since vibration from axle can now travel directly to frame?
Might need to upgrade shocks?
Might soften liitle over time?
Might need to get softer onesv
Only have gone 80 miles with them so far.
Will give it another few hundred miles and see what feel then.

Overall pretty happy So far.

2017 Thor Gemini TX



by:

Strainer/basket is holding up well after one year of use in our RV, no issues.



by:

Work great. No longer bottom out when towing my trailer



by:

Works great on my Honda odessey !! Great customer service as always!



by:

Offers firm suppirt for loads. A little bouncy with no load. Easy to install.



by:

Very fast shipping, had product in 2 days! Very easy to install. Hardest part was lifting the RV.



by:

The product first arrived in a damaged box with one of the washers missing, but ETrailer did resupply that. The hardest part was finding a shop able (needs the right tools to depress coil springs) and willing (a potential liability issue messing with suspension) to replace it for a reasonable cost. Eventually a local tire shop agreed to. This was for a 2014 Honda Odyssey, especially for pulling a pop-up. Took two camping trips last summer, one before and one after installation, and I have been pleased with the added stiffness in the rear suspension. It made about 1 to 1.5 inch of difference in resting position when fully loaded and towing and has helped smooth out bumps and humps in the road - both when towing and not.



by:

Fast delivery. Disappointed with the instructions. Sense the item was ordered vehicle specific. The instructions said tighten bolts to manufactures specifications.



by:

Excellent quality, good prices and great shipping ! Thanks



by:

Fast Shipping



by:

BIG difference in handling a load or trailer ... what a great product!!!



by:

Have not driven yet, just installed. Added Monroe coil-overs as well, thanks etrailer.



by:

Delivery was fast, instal was quick & easy. Later today I will see how they work when I hook up to the 5th wheel. By all indications right now I believe they exceed my expectations.



by:

I put this product on my Trooper. The install was easy is you take the back wheels off. I towed this weekend and I did not bottom out. If they hold up over time, this is a great product.



by:

I would recommend this product to anyone. I pull trailers with a 1/2 ton truck and will never have another one without this product on it.



by:

Price was good compared to other sites. Shipped very fast. Installation was very easy.



by:

Put them on and it is exactly what I need to keep truck level when hauling fifth wheel. Easy to install too



by:

Fit and functions as described. Installation was simple on my '05 Silverado.



by:

It took longer to move the floor jack under the truck then to install them. Maybe 10 minutes total. Thanks Rex



by:

15 mins to install and what a difference…. Went from a few inches of sag in the rear to only an inch and over 1000lbs tongue weight didn’t know the trailer was attached to the truck



by:

This product was delivered quickly and efficiently. The quality of the product is excellent and look forward to seeing how they work when we are towing our trailer.



by:

Holding up good a year after purchase, work great for pulling my camper



by:

Easy to install, took a lot of the weight of as expected.


25
3508
Show More Reviews

See what our Experts say about this Timbren Vehicle Suspension

  • Will Timbren SES # TDR3500 Help With Sag And Ride Quality For A 2001 Dodge Ram 3500 Dually 4x4
    Hey Wes, The Timbren Rear Suspension Enhancement System # TDR3500 would make a significant difference with sagging and would add a bit of cushion to the suspension. With this being rated for 6,000lbs my only concern is that your unloaded road quality could potentially be a bit rough. Timbrens are known for being great at load lifting but they make them such a high capacity that they won't compress as easily so when you hit a bump the axle will hit the spring and it can be annoying. Adding...
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  • Recommended Suspension Enhancement For Roadtrek RV on 1996 Ram 350 Chassis
    The RoadActive Suspension Kit, # RAS4612-DV will give you and adjustable system with a 2,000 lb capacity. It will give you support and help reduce sag. If you are looking for a stronger capacity, I recommend the Timbren Rear Suspension Enhancement System, # TDR3500. This system will give you a 6,000 lb capacity. These spring function as a stabilizer and help level your vehice. They become more rigid as more weight is added to support the load. This will help with stability and compensate...
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  • Can B&W Gooseneck Trailer Hitch and Air Bags be Installed at the Same Time on a 1999 Dodge Ram
    As long as the air bag mounting brackets do not mount in the same place on the truck frame as the B&W gooseneck brackets then you can install air bags on a 1999 Dodge Ram. Firestone kit # F2071 would not work because it mounts on the outsides of the truck frame rails the same as the gooseneck brackets. Looking through the other air bag options for the truck all of them have upper brackets that would interfere. Another option is a Timbren set up # TDR1525H2. It can be used on a 1500 or...
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  • Will Upgrading Rear Anti-Sway Bar Help Reduce Body Roll on a 1999 Dodge Ram Pickup
    Upgrading the rear factory anti-sway bar with # RM-1129-122 will help reduce side to side body roll. This bar fits 2500 and 3500 series 4x4s only. Other option to reduce body roll is to install some suspension helper springs. If you have a 4x4 with standard height (no factory or aftermarket lift) I recommend # TDR1525H4 which will fit a 1500 or 2500 but not a 3500. For a 3500 use # TDR3500 for a 4x4 or # TDR3500B for 2-wheel drive models. For a 1500 with standard height and 2-wheel drive...
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  • Rear Suspension Enhancement Recommendation for a 1998 Ram 3500 Dually with Gooseneck Hitch
    I have a suspension enhancement solution for your 1998 Dodge Ram 3500 dually, but the two Firestone Ride-Rite Air Spring kit that we offer for your 1998 Dodge Ram 3500, # F2071, will most likely interfere with the frame brackets of your gooseneck hitch. This kit mounts on the outboard side of the frame rails just above the axles and most gooseneck hitches have frame brackets that mount on the outboard side of the frame. If your gooseneck hitch does not use frame brackets that mount to...
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  • Which Suspension Enhancement Fits 1998 Dodge Ram with Draw-Tite Hide-A-Goose Trailer Hitch Installed
    If your 1998 Dodge Ram is a 2500, or 3500 (cab and chassis models only for the 3500), you can use Firestone Ride-Rite Air Helper Springs, # F2220, because this kit installs on the inside of the frame rail and will not interfere with the Draw-Tite Hide-A-Goose, # 9460-39, which installs on the outside of the frame rails. For a 1500, you can use SuperSprings Vehicle Suspension, # SSA5MTKT. I have included a link to the installation details for reference. For a 3500, you can use Timbren Vehicle...
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  • Rear Suspension Enhancement For a 2002 Dodge Ram 3500 4WD Dually With B&W Turnover Ball Gooseneck
    For your 2002 Dodge Ram 3500 Dually 4wd I recommend using the Timbren Rear Suspension Enhancement System # TDR3500 since there are no air bag systems compatible with your B&W Turnoverball Underbed Gooseneck Trailer Hitch # BWGNRK1394. The Timbren hollow rubber springs have a capacity rating of 6,000lbs to help reduce sag and stabilize your Ram under load. This will not increase your towing or payload capacity.
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  • Recommended Jounce Springs Suspension Enhancement for 1998 Dodge Ram 2500
    We do have an option for rear jounce springs that will work for your 1998 Dodge Ram 2500, although I checked with SuperSprings (the manufacturer of SumoSuprings), and there are no SumoSprings that fit a '98 Ram 2500. Instead, I highly recommend a similar spring, the Timbren Rear Suspension Enhancement System, and the correct one for your truck is going to depend on if your 1998 Dodge Ram 2500 is 2WD or 4WD: - 2WD: Timbren Rear Suspension Enhancement System # TDR3500B - 4WD: Timbren...
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  • Are There 7,500 Lb Air Bags for a 1999 Dodge Ram 3500
    I do have an option for you but the highest rated suspension enhancement option we offer for a 1999 Dodge Ram 3500 is the Timbren Rear Suspension Enhancement System part # TDR3500 rated at 6,000 lbs. This will be an excellent option for the true work trucks which haul heavy loads on a consistent basis. They are made of a very heavy duty rubber so they will last a long time and never let you down. They are also maintenance free. Unfortunately, there are no 7,500 lb air bag systems for this...
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  • Suspension Enhancement for 2000 Dodge Ram With Gooseneck Bolted to Outside of Frame
    There is suspension enhancement available for your 2000 Dodge Ram 3500 pickup, but we do not carry any air bags that will work with a gooseneck hitch bolted to the outside of the frame, as you noted was an issue. Your best option would be to use the Timbren Rear Suspension Enhancement System # TDR3500, which will not interfere with the gooseneck hitch in your Ram. These are rubber springs that do not require any type of drilling and will work to increase your truck's stability, reduce...
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  • Suspension Enhancement for B&W Gooseneck Hitch 1997 Dodge Ram 3500 DRW, RWD
    I have a solution for you, but the top bracket of the Firestone kit part # F2071 will interfere with gooseneck hitch rails. Instead you would want a Timbren kit part # TDR3500 which will give you the support you need and not interfere with a hitch.
    view full answer...

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Info for this part was:

Employee Jacob T
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Employee Dustin K
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Employee Chris R
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Employee Mary K
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