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  1. Vehicle Suspension
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  3. Jounce-Style Springs
  4. Rear Axle Suspension Enhancement
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Timbren Rear Suspension Enhancement System

Timbren Rear Suspension Enhancement System

Item # TDR1500DS
Our Price: $252.45
You Save: $44.55
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 Rear Suspension Enhancement System part number TDR1500DS can be ordered online at or call 1-800-940-8924 for expert service.
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Timbren Vehicle Suspension - TDR1500DS

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

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.


  • 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
      • 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 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. 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.

DR1500DS - Rear Suspension Enhancement System with Aeon Hollow Rubber Springs by Timbren

Installation Details TDR1500DS Installation instructions

This Product Fits The Following Vehicles

Customer Satisfaction Score:

Customer Reviews

Timbren Rear Suspension Enhancement System - TDR1500DS

Average Customer Rating:  4.7 out of 5 stars   (5492 Customer 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.


The product came very fast. I already installed it the same day on my 2009 Dodge Ram pickup. It looks like it should do a fantastic job. I'll know better when I hitch up my travel trailer.


I was very impressed with the easy installation and
the performance of the product.
I can easily put a 1 yard of top soil in my Ram 1500
and my truck carry it level , no problem. No more snag
In the rear. I also find towing a trailer much better. No worries about blowing air bags, this product is maintenance free. Love it, it simple and it works great. Highly recommend

Great product, works well and easy to install
Anthony L - 05/31/2021

2019 Dodge Ram Pickup

Work very well on my 2019 Ram 1500. Simple install. The heaviest hitch load I had on them was 500lbs. Never even went down enough to know it was there.

Dodge Ram Pickup

I bought these to prevent the "squat" of carrying a load in a Ram 1500.It took only 30 minutes to install. Now when carrying a load or towing a travel trailer the truck is a better position.
The only thing you will notice is the smoothness of the ride. It's not, it is stiff. I'd rather have the stiff than the nose pointing to the moon.

Dodge Ram Pickup

Before installing on Ram 1500 truck did sag in rear when loading a camper but after the install no more sag and made a big difference in stability. Really good product

2019 Ram 1500 Classic

Installation took less than an hour and I was able to seat them using a jack and a couple pieces of wood.
Haven’t towed our travel trailer yet to see the difference but akways get great prices and follow-up using etrailer


I'm glad I got these for my truck. I have had a couple of heavy loads, about 150 pounds over the truck limit and the rear was more stable instead of sagging like it did before the replacement of the Timber Rear Suspension Enhancement System. The instruction to remove and install were great! Very easy to do.

There great and I would buy another pair if I bought a new truck right away.
Darrell - 11/30/2022

2020 Ram 1500

Have not used them yet, well tomorrow. I expected a little more clearence than the half inch from axel plate setting empty now, well see how they work with trailer loaded with skidster on it tomorrow!!!! EASY TO INSTALL.

2019 Dodge Ram Pickup

My 2019 Ram Bighorn has rear springs instead of shocks which makes for a very comfy ride, but when I’m hauling the camper it sags more than i like and isn’t towing in the most efficient way. These eliminate the sag and make towing easier on the truck. Didn’t require anything to install as there was enough room to reach up and remove the factory ones and put these in. Less than 5 minutes.

2019 Ram 1500

2019 Ram 1500 crew cab - towing 26’ travel trailer lowered rear of truck too much despite using a quality equalizer hitch. Resulted in poor handling as reported by many others.
Timbrens installed easily and carry the load well. Note- you will need to reset your equalizer hitch from scratch with Timbren’s installed.
Unloaded the truck retains very good ride quality.
For me they were the right choice. I have used airbags in other trucks in the past and would say they can be fine tuned to best optimize ride and handling over a wide variety of conditions. I chose not to go that route because of the complexity of installation on this particular truck. I’ m very satisfied how the Timbens work for me


Kimberly R was extremely helpful in guiding me to a better product solution, authorizing a return and expediting the delivery of the new order so I could install the product this weekend...during July 4th holiday week. Can't vouch for the Timbren springs yet but the customer service experience with Kimberly R was 5-stars.

2017 Ram 1500

Definitely firmed up the rear of my Ram 1500 truck so that I could occasionally tow a tri-axle trailer with a 31 foot boat. The rear end hardly sags when I drop the trailer on it. The drawback is is makes the ride stiffer when not towing. You can defiantly feel a harsher ride on the highway. They say the bumpers don't engage when not weighed down but that's not entirely true. But, they did the job for me!


easy install for sure, just remember to take safety precautions.
thank you Adam for your supplying the rite application.
respectfully pat


Easy installation.The true test will be next week when I will be towing my camper.


Wow!!! So simple to install. I didn't have a lift, so used a floor jack under the hitch base to lift the bed up. The factory ones came out nice and easy. The new ones went on nice and easy too. I used a little bit of silicon grease, and they popped right in. I have about a 1-2 inch clearance with no loaf. Towing my rv trailer should be much smoother now.

2015 Ram 1500

These made a world of difference and were super simple to install. Even my wife said she felt a noticeable difference driving down the road. It felt stiffer, less push and pull and much more stable. For example, when driving down the road and hitting a dip there was less bounce and the truck seemed to rebound quicker and more solid.

We drive a 2015 Ram 1500 and tow a 28' Jayco RV travel trailer. We do have sway bars and brake control installed as well. The tow capacity is approximately 7200 pounds and the trailer is approximately 6500 to put it into perspective. The old jounce springs compared to the new are like comparing a 12oz can to a 22oz can, they are literally twice the size and feel as stiff as a lacrosse ball where the old ones felt as stiff as a tennis ball. When the jounce springs were installed the truck only drops 2" instead of 3.5" in the rear.

We are so thrilled with these installed, it gives us a heightened sense of security when towing now, the tow vehicle feels safer too. Worth every penny, strongly recommend.

2015 Ram 1500

Always first class service from Etrailer this item arrived earlier than expected thanks


What a great difference these made in how our trailer tows. I was looking at air bags, air adjustable shocks, and other ways to beef up the suspension on our truck when we are towing. It took me about a half hour to install them and it's like driving a different truck now with a load. No air or air lines to worry about. With the trailer connected (4850 pounds unloaded) it does not float and the sway is almost non- existent now. When the truck is empty I can tell they are there when I go over a good size bump, it is stiffer than it used to be, but it is't a problem as far as I'm concerned. Excellent product, easy to install, and a low cost, simple solution to our towing problems.


WoW Very Nice! So Much Better than the original truck stops. Now when I get a full load of dirt or gravel my truck does not come down more than 3". I should have purchased these before, but glad I now did. Saves my springs and suspension.

2019 Ram 1500 Classic

These are great. The install was just as easy as stated. Two points to keep in mind. Use the soapy water trick and the 2x4 pieces. I was able to install in less than 15 minutes. I connected my 34' travel trailer and there was only about 1 inch of squish versus the 6 inches with the old ones. I am looking forward to our next camping trip. I am towing with a 2019 Ram 1500 Classic (Warlock). Thank you for a great product.


I first started by jacking up the bed about 4" then I got under it yanked out the small factory ones, so easy. Then put some silicone on the new ones, wiggled them in place and just to make sure they were seated properly I added couple pieces of wood under them and let the jack down. Took it for a test drive over a really bad bumpier road and to my amazment I was completely satisfied .got back home and looked under it and their about a 1/2" of clearance . Still after the test drive I'm satisfied doing this prep job before I pick up my new 5th wheel . Thanks

2015 Dodge Ram Pickup

Super easy to install on my 2015 Dodge Ram 1500. Followed the directions and watched a YouTube video and they were installed super easy. Product does exactly as it says, took out a small sag in my truck when i had my 5th Wheel loaded. The new ride with a load is excellent and without a load its the same as stock. Great Product!


Very promp on order, give updates on receiving order. Appreciated the bussiness from me as a customer.

Thank you,


Installed easy in about 15 minutes. Popped the stock bump cushions out by hand and followed the installation instructions. Going to be on the road with my trailer soon and am looking forward to the additional support for my suspension.


Amazing solution that leveled out my truck when towing my tailor. Super easy to install and nothing to adjust.

Show More Reviews

See what our Experts say about this Timbren Vehicle Suspension

  • Recommended Timbren System For A 2021 Ram 1500 Classic 2 Wheel Drive
    From what I could find out, the jounce "cup", for the lack of a better way to put it, the Timbren Rear Suspension Enhancement System # TDR1500DS will sit in is the same for the Ram 1500 and Ram 1500 Classic for the 2021 model year. However, these do both carry the same stipulation about not fitting vehicles with factory the Air Suspension system, but as long as you do not have this, you are good to go.
    view full answer...
  • Will Timbren Suspension Enhancement System Void Warranty for 2022 Ram 1500
    The Timbren Rear Suspension Enhancement System # TDR1500DS is a great choice for your 2022 Ram 1500 and it won't void your warranty unless the Timbren system actually causes any of the damage that is done to your vehicle (which it shouldn't) per the Federal Magnuson-Moss Warranty Act. The Act states that if something breaks on your vehicle and you take it in for warranty repair, the dealer must honor your warranty unless whatever modifications you have added to your vehicle actually caused...
    view full answer...
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  • Will Timbren Springs Require Adjustment to Weight Distribution Hitch on 2017 Ram 1500
    The # TDR1500DS Timbren Rear Suspension Enhancement System will help reduce or get rid of the sag you are experiencing with your 2017 Ram 1500. These will also help improve overall handling and give you a more comfortable ride by absorbing road shock and improving roll stability. As for your current setup, it may be necessary to make some minor adjustments depending on the impact the Timbren springs have on your vehicle. Start by measuring your tow vehicle without the trailer loaded....
    view full answer...
  • Timbren Kit Recommendation for 2016 Ram 1500 Towing 6,000 lb Trailer
    Your camper that weighs 6,000 lbs is going to have a tongue weight figure of 600-900 lbs so based on that I would go with a lighter duty Timbren part # TDR1500DS which has the 6,000 lb rating. The problem with the higher capacity Timbrens is that they cause the ride to be a bit harsh so they should only be used whenever absolutely necessary.
    view full answer...
  • Timbren Suspension Enhancement for a 2016 Ram 1500 Tradesman
    I recommend the Timbren # TDR1500DS for your 2016 Ram 1500. They're for standard occasional towing with a capacity of 6,000 pounds. They're confirmed on your Ram as long as you don't have a factory air suspension system. The 6,000 pound Timbrens I think are the way to go. If you get a higehr rated spring it'll cause a harsh ride on your truck, and you likely don't need anymore than this with a 1500.
    view full answer...
  • Why Would Weight Distribution System Still Allow Trailer to Cause Vehicle Suspension Sag
    Pop ups like what you have are pretty cool since they allow you to bring ATVs with you pretty easily. The problem is that you end up concentrating so much weight on the front of the trailer you end up with quite a bit more tongue weight when loaded vs. unloaded. Typically a properly rated weight distribution system will eliminate the sag you described. But that assumes two things.. That the tongue weight capacity of your vehicle isn't being exceeded and that the tongue weight range of the...
    view full answer...
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  • Which Timbren Kit for 2016 Ram 1500 will Provide Best Ride Quality
    The lighter duty Timbren kit for your 2016 Ram 1500 part # TDR1500DS is the way to go. It gives you the support you are wanting but since it's not as high capacity as the other kits the ride quality will be smoother.
    view full answer...
  • Which Timbren Kit Fits 2011 Ram 1500 Towing 18 ft Utility Trailer
    Yes, the Timbren kit part # TDR1500DS is the correct fit for your 2011 Ram 1500. This will give your rear suspension the support it needs so that it does not sag as you are towing.
    view full answer...
  • Which Timbren Kit for 2017 Ram 1500 Towing Trailer with 660 lbs Tongue Weight
    I'd first try adding more spring bar tension from your weight distribution system as it sounds like you may not have it setup properly as it's a properly rated system and you are still experiencing sag. That said the Timbren kit I would recommend is the part # TDR1500DS for your 2017 Ram 1500 as it's not going to make your ride quality as harsh as the other options would.
    view full answer...
  • Suspension Enhancement Recommendation for 2016 Ram 1500 Regular Cab with Camper
    I really like the Timbren kits like the part # TDR1500DS which is a confirmed fit for your 2017 Ram 1500 with a regular cab. You get the same suspension support as the other kits like the air bag setups but with a much simpler install and less maintenance as you'll never have to inflate or maintain air pressure.
    view full answer...
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  • Recommended Timbren Rear Springs for 2018 Ram 1500
    For your 2018 Ram 1500 the Timbren Rear Suspension Enhancement System # TDR1500DS will work perfectly. These hollow rubber springs feature a 6,000 pound capacity that will do a great job of providing additional support to the rear suspension and leveling everything out when you're under load. I really do like the Timbren systems because they offer superior support but you don't have to worry about adjusting anything before each trip like you would with air springs. After the initial installation...
    view full answer...
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  • Timbren Suspension Enhancement for 2018 Dodge Ram 1500 With Factory Top Overload Springs
    You can absolutely use the Timbren Rear Suspension Enhancement System # TDR1500DS on your 2018 Ram 1500 with the factory top overload springs as there will not be any interference. The Timbren # TDR1500DS will be very effective for your '18 Ram 1500 to improve your truck's handling and reduce body roll when turning. Our customers who have used the Timbrens regard them extremely highly, with around 1,500 reviews giving them a nearly 5-star rating as you can see on the product page. This...
    view full answer...
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  • Recommendation for Rear Sag on 2018 Ram 1500 Crew Cab Work Truck with Bed-Slide
    I can absolutely help with the rear sag issue you are experiencing. I recommend adding the Timbren Rear Suspension Enhancement System # TDR1500DS. This simply changes out your factory jounce springs (bump stops) and will sit above the rear axle to help stabilize and level your Ram. They become more rigid as weight is added so they act as shock absorbers an then as load support as needed. This not only will help level your truck and keep it at factory height, but it will also assist...
    view full answer...
  • Height of Timbren Rear Suspension Springs # TDR1500DS
    I went out to our warehouse to take a look at the Timbren Rear Suspension Enhancement System # TDR1500DS and measured an overall height on the springs of right at 6-1/4 inches. I have attached an image to assist. These particular springs are designed to fit the rear axle on the following trucks: 2010 - 2018 Ram 1500 2019 - 2019 Ram 1500 Classic 2009 - 2014 Dodge Ram Pickup 1500
    view full answer...
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  • Will Installing Timbren Aeon Helper Springs Have Warranty Implications for 2022 Ram 1500
    Installing the Timbren # TDR1500DS Aeon springs on your 2022 Ram 1500 won't have any effect on your vehicle warranty. Purchasers of aftermarket vehicle accessories are protected by the federal Magnusson-Moss warranty act. In summary, the act states that vehicle manufacturers cannot deny warranty service unless they can prove that the aftermarket part actually caused the problem in question. The Timbren # TDR1500DS will add up to 6000 lbs of support, and is compatible with gooseneck or...
    view full answer...
  • Timbren Kit that Fits 2019 Ram 1500 Classic Towing Camper Trailer
    The Timbren kit part # TDR1500DS is a confirmed fit for your 2019 Dodge Ram 1500 Classic and would do an excellent job providing additional rear suspension support. Unloaded your truck would not have a change in ride height.
    view full answer...
  • Timbren Suspension Enhancement Recommendation for 2019 Ram 1500
    Even though you'll be towing a pretty heavy trailer I would go with the lightest duty Timbren part # TDR1500DS that fits your 2019 Ram 1500 as this will give you the support you want without destroying your truck's ride quality.
    view full answer...
  • Timbren Suspension Enhancement for 2019 Ram 1500 Towing Travel Trailer
    A Timbren kit like the part # TDR1500DS that fits your 2019 Ram 1500 will be a great solution to beef up the rear suspension and help tow your travel trailer. This has a support capacity of 6,000 lbs which will do a great job to give you the additional support you want without being so stiff that the ride quality suffers.
    view full answer...
  • Which Timbren Kit For 2017 Ram 1500 Hauling 17 Ice Castle Fish House
    For your 2017 Ram 1500 the Timbren kit part # TDR1500DS would be your best Timbren option for your application where you'd be hauling a 17 foot ice castle fish house. This will give you the best balance between support and ride quality.
    view full answer...
  • Suspension Enhancement Recommendation 2022 Ram 1500 Towing Skid Steer
    For a trailer that heavy I would recommend the Timbrens part # TDR1500DS which can provide up to 6,000 lbs of additional suspension support which will help a lot with towing your skid steer trailer. Skid steers can weigh quite a bit so I would make sure your trailer when loaded isn't heavier than your truck's towing capacity.
    view full answer...
  • Recommended Timbren Suspension Enhancement for a 2023 Ram 1500 4WD
    Congrats on the new truck! The correct Timbren Kit for your 2023 Ram 1500 is the item # TDR1500DS you were looking at. The other options are for service body trucks. This system has a 6,000 lbs load leveling capacity that will keep your truck from squatting when towing a trailer or hauling a heavy payload. This system will not work with a factory air suspension system. I have attached an installation video below so you can see how to get this kit set up.
    view full answer...
  • Which Timbren Kit for 2020 Ram 1500 Classic
    Since Timbren systems are notoriously harsh I would go with the lighter duty option part # TDR1500DS that fits your 2020 Ram 1500 Classic as this will do a better job giving you the support you are wanting without making the ride too harsh.
    view full answer...
  • Suspension Enhancement Recommendation for a 2011 Dodge Ram 1500 Towing a Gooseneck Trailer
    For occasional towing with your 2011 Dodge Ram 1500, I would go with the Timbren suspension enhancement system. If you do not have a Quad Cab, use # TDR1500DS. If you do have a Quad Cab, use # TDR1500DQ (instructions linked for reference). The Firestone systems are good when you carrying varying sized loads and have to adjust the ride accordingly. But for occasional towing of the same trailer, the Timbren system would be the way to go.
    view full answer...
  • Reducing Rear End Squat when Towing Trailer with 2014 Ram 1500 Crew Cab 2x4
    Normally weight distribution is the best option when squat is caused by a coupled trailer. But since the manufacturer of the trailer specifically said not to use it the next best option would be suspension enhancement for your 2014 Ram 1500. I do recommend the Timbren springs # TDR1500DQ because they do work well. They may allow the suspension to travel some before they engage but the squat should be reduced if not eliminated. I have included a link to a video showing installation of these...
    view full answer...

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