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

Timbren Rear Suspension Enhancement System

Part Number: TDR1525H2
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$269.36
Retail:$322.85
You Save: $53.49
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 TDR1525H2 can be ordered online at etrailer.com or call 1-800-940-8924 for expert service.
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Timbren Vehicle Suspension - TDR1525H2

  • Jounce-Style Springs
  • Rear Axle Suspension Enhancement
  • 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
      • 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. 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.



DR1525H2 - Rear Suspension Enhancement System with Aeon Hollow Rubber Springs by Timbren

Installation Details TDR1525H2 Installation instructions

This Product Fits The Following Vehicles




Customer Satisfaction Score:


Customer Reviews

Timbren Rear Suspension Enhancement System - TDR1525H2

Average Customer Rating:  4.7 out of 5 stars   (6318 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.

by:
Dodge

I would like to thank etrailer for the great support on getting my truck parts. I called and Gwen confirmed what exact part was needed for my 1998 Dodge pick up. The install was a snap and we’re ready to start vacationing. Thank you.



by:
2001 Dodge Ram Pickup

This product went together easily and with minimal tools. Took more than 15 mins to install, but that was because we had to remove the rear tires for proper installation. Road test went well.



by:

Parts work as they should.



by:

I know it will be lovely when loaded or the trailer on. However,it rides like a wagon empty with brand new premium shocks and struts empty. Thud thud thud. You really cannot feel the shocks or suspension. Found exact same item plentiful for 60 bucks on eBay after I bought these for 250. I may cut these in half or put air bag on. I do not like the ride empty. No hard feelings. It is a good product maybe just not for me.



by:

Easy install took about 20 minutes on my 2017 Ram 3500 SRW. Had about 1/2 inch clearance as recommended. Loaded up my 5th wheel (2350 hitch weight) and about 200 lbs of gear in the bed. Just got back from a 800 mile camping trip through mountains of TN. You can really feel the difference around those sharp corners and uneven surfaces. The truck felt firm and controlled not hard and jarring as some have mentioned. Going over those overpasses with the wonderfully smooth (Not) joists was greatly improved. The truck would squat and rebound again, with a firm controlled response. Driving without a load felt the same as before without them. I would highly recommend these! Ordering from etrailer continues to be my go to option!



by:

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.



by:

Took about 45 minutes to install. But that was 2 trips into the house cause my deep drive sockets were buried. F-350 gasser with 8’ box, Fiberglas cap, 200lb wooden storage drawers and estimated 400lbs in tools. I tow a 14k bumper pull dump that squats the truck. I installed the spacer with the timbrens and it sits on the original axle stop. Ride quality is unknown as I haven’t driven it yet.



by:

I’d seen similar products rated in the 4,000 lb ratings but I went with these. I’m not a mechanic but I removed the factory bump stops and installed both these in 30 minutes or less. I used my rolling jack and lifted from the drop hitch and easily removed the old ones and soapy water and 1/4 twist and these were on. Placed a block of wood in the space between these coils and lowered the jacks then pressed it with my tractor to confirm full engagement. I carry a lot of tools on a 2020 Chevy 2500 I do feel a bit of butt bounce on large bumps but other than that I’m very pleased.



by:

Installation was a breeze, removed old bump stops installed Timbrens in about 30 minutes. Haven’t put a load on them yet so I’ll update later. Installed on a 2008 Silverado 2500HD..



by:

About a 1/2 inch difference in gap at the bump stop perch but still within parameters. Truck sits perfect with trailer attached. Haven’t towed yet. After towing if they perform like they should will upgrade to a 5 star. Easy to install, definitely needed 2x4 and jack. 2011 Silverado ext cab with 30 ft Genisis 5th wheel.



by:

Was able to install these with a 15mm flex head ratchet wrench and lifted the rear of the truck to make it easier. 30 minutes to take off 4 nuts and put em back on. 2 minutes assembling the timbrens with the added spacer. I have a f350 with a salter and plow. Loaded with salt the lights shoot up and in the snow ?? it’s like hitting hyper drive and you’re blinded. These helped big time. Very happy so far.



by:

Out of the box fit !!
Only issue I had
was keeping the wedge from moving during installation



by:

The pro: The longer, heavier bump stops worked great when hauling my mustang home from Chicago. The truck stayed level and handled great.
The con: I had to remove the bump stops for everyday use. They limited my suspension travel causing a stiffer ride.



by:

I am so glad I bought these for my truck. I was able to install them myself using a jack and jackstands. The ride is bit rougher now; but the suspension is totally awesome compared to before. I am able to haul a bit more weight when needed.



by:

Haven’t had it on long, but so far so good. 1999 F350 dually. Bolted up nicely. Total job took 10 minutes. Have hauled two gooseneck loads of hay and truck drives SO much better. Nice and level. Money well spent so far.



by:

After successfully using air shocks with on board compressor on our 2001 F250 for years, I almost automatically put the same setup on our new 2022 F250. We tow an 11k lbs travel trailer. Then I read reviews on Timbren Suspension Solution & thought, worse case I’ll end up with both solutions. After spending 20 minutes installing Timbren and towing the trailer a few miles, it became obvious I didn’t need air shocks, or anything else. The truck & trailer drive as one. Our rig is level and rides great. When the trailer is unhitched, the Timbren’s aren’t engaged - just a normal F250 ride.



by:

The Timbren rear suspension bump stops are the best by far. I installed this unit on a 3rd gen Toyota Tacoma which became an essential item for safety towing purposes.

The main reason for purchasing this product was for aided support for towing. This is essential for those who tow boats, tear drop trailers or medium sized campers.

The stock bump stops are relatively small in size which is standard for other vehicle manufacturers however Timbren's bump stop are made with such high quality material and craftsmanship.

This also helps in preventing in stressing the front suspension from becoming raised which can affect your steering when your towing. The Timbren bump stops also helps in preventing your rear suspension from the "sagging effect" which can cause stress to your tires.

I recommend that when you install the bumps stops, check the lugs every quarter or depending on frequent you tow, to include tightening the lugs with a torque wrench to ensure it's torue specification(s).

This product has given me peace of mind when traveling long distances and when camping off the grid. Timbren also has good customer support service however etrailer has paramount customer service as well.



by:

very good product ,received just in time and fit perfectly on my GMC savana 2000 .Be sure to clean the two receptacle thats help.
très bon produit , reçu dans les délais et s'ajuste parfaitement . Assurez-vous de nettoyer le receptacle cela facilite l'installation.



by:

I was able to pull my RV with 550lbs tongue weight without the excessive rear end squat. I did notice however that I can feel them engage during normal unloaded driving when I drive over dumpy parts of a road where before there was more spring travel. It’s not bad but a stock 97 f150 does have a smooth ride. These will take some not, all of that away. But the up side is well worth limited ride change.



by:

I just installed Timbrens in our 2024 Sequoia Capstone. It has 22" wheels so I was able to slide under the rear axel and swap out the factory parts without jacking or removing the the wheels. It took me about 20 minutes to do both sides. With no load I can fit almost two fingers between the axel and the bottom of the Timbren. I tow a 29' boat that has about 600-700 lbs of tounge weight. The Sequoia sits pretty level and rides great. I had a 2010 Sequoia before this one that I installed manual rear coil airbags that worked well. I like the Timbrens as there is no pumping every time I tow.



by:

The last two things I bought from E-trailer looked like they were used. This one at least had all of the fasteners, although they didn’t seem to be the ones in the directions. These had Allen heads and I had to buy a socket that had an Allen key. The directions included aren’t very clear. I had to find some YouTube videos to make sense of the install unloaded I can’t tell any difference, which is great. Hoping this fixes my backend squat with the boat trailer attached which is so severe I can’t flip down the trailer jack. Fingers crossed. Get a jack under the hitch and really unload the axle from the frame. Once I got enough clearance it was truly a 30 minute job.



by:

Absolutely fantastic! So easy to install. These have completely change the ride quality while hauling our truck camper. The truck now rides better loaded than unloaded. The gap under the SES is small, less than an inch. So unloaded ride is a bit ruff since it bottoms out super easy on the smallest bump.
But if I wanted to I could take them off since they go on so easy.
I still wouldn’t pass up having these. I can’t say enough how great they are. And I ordered a used set which were in new condition. Less money, same awesome outcome. Can’t go wrong!



by:

Super simple to install. My 2018 f150xl would almost hit the bump stops when I hooked up my 7x16 enclosed trailer. Now, it almost rides level. Much safer feeling ride also. Without the trailer, it rides like an unloaded dump truck. It is what it is. I'm happy with them.



by:

Received the Timbren SES kit in today's mail around 11:30AM, already installed on my 2024 F-150 pickup's rear differential before 3:00PM same day. Like always etrailer's fast delivery time and product info with installation video on your website are very helpful. 1st photo OEM bump-stop, 2nd photo OEM bump-stop removed, 3rd & 4th photo Timbren SES kit installed.



by:

Jesse M gave me expert advice and answered all my questions regarding the Timbren rear suspension enhancement system. I ordered the Timbrens and it took me a little over half an hour to install myself. I absolutely love the way the Timbrens leveled my sagging truck and greatly improved the stability of my ride. I carry a 2003 Northstar tc1000 pop-up camper on my 8ft bed. I highly recommend the Timbren rear suspension enhancement system. I attached a before and after photo.


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See what our Experts say about this Timbren Vehicle Suspension

  • Correct Timbren Rear Suspension Enhancement System for a 1995 Dodge Ram 2500
    I checked with Timbren and the correct Timbren Rear Suspension Enhancement System for a 1995 Dodge Ram 2500 is part # TDR1525H2 for 2WD models or part # TDR1525H4 for 4WD models. These both offer a bolt-on fit that will provide additional support when towing or hauling. They are very cost effective and one of the most popular options for suspension enhancement.
    view full answer...
  • 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...
    view full answer...
  • Recommended Suspension Enhancement for a 2002 Dodge Ram 2500 with 5th Wheel
    The Air Lift LoadLifter 5000 Air Helper Springs part # AL57230 will not interfere with most 5th wheel brackets. However, this kit is for a 2002 - 2008 Dodge Ram Pickup 1500 and since you have a 2002 Dodge Ram 2500 it will not work for you. Unfortunately, there is not an airbag kit that will work for your truck and not interfere with 5th wheel brackets but I do still have a solution for you. I recommend using the Timbren Rear Suspension Enhancement System as this will be your next best...
    view full answer...
  • Air Suspension Enhancement For 1999 Dodge Ram 2500 Truck With Gooseneck Hitch Installed
    We do not offer an air bag helper spring system that will work with your gooseneck hitch installed on your 1999 Dodge Ram pickup truck but I do have a solution for you. If you have a 2WD truck I recommend the Timbren Rear Suspension Enhancement System, part # TDR1525H2. This replaces the bump stop on your truck and helps when carrying a heavy load. This system does not affect the empty ride of your Ram. This is designed to work with a suspension system that is in good working order and...
    view full answer...
  • 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...
    view full answer...
  • Suspension Enhancement Options for a 2002 Dodge Ram 2500 With B and W Gooseneck Turnoverball Hitch
    The upper bracket for the Air Lift LoadLifter 5000 Air Helper Springs, # AL57215, that you referenced bolts to the outside of the frame rail where the frame brackets of your B and W Turnoverball currently sit. I spoke with B and W and they told me that it was okay to bolt through their frame brackets if you would like to install this air bag kit. At this time we do not offer air springs for your 2002 Dodge Ram 2500 that mount to the underside of the frame rail, but we do offer rubber...
    view full answer...
  • Recommended Suspension Enhancement for a 2001 Dodge Ram 2500
    If you are not hauling a 5th wheel trailer or using a gooseneck hitch the top of the line rear suspension enhancement is going to be the Firestone Ride-Rite Air Helper Springs item # F2071. These air bags fit both the 2WD and 4WD 2001 Ram 2500's. This system offers 4,800 lbs in load leveling support. If you are using an in bed hitch your options are limited. You will want to go with one of our Timbren Kits. The Timbren's act as a bump stop and will prevent your suspension from bottoming...
    view full answer...
  • Suspension Enhancement Recommendation for 2000 Dodge Ram 2500 with Gooseneck Hitch Installed
    The only suspension system we can safely recommend as a fit for your 2000 Dodge Ram with a gooseneck hitch installed is a Timbren kit part # TDR1525H2 which is a confirmed fit. The air bag kits all install in the same area as your gooseneck hitch rails so the two can't be used at the same time.
    view full answer...
  • Suspension Enhancement Recommendation for a 2011 Dodge Ram 1500 Quad Cab Short Bed
    Basically, the truck is only rated for a certain amount and adding suspension enhancement will not increase the towing capacity or payload. Adding suspension enhancement will just help with ride quality, leveling the vehicle when under load, and it will help protect the suspension. Suspension enhancement is still a good idea for the reasons I have listed above. Since you will be towing a 5th wheel trailer which is a load that does not shift and has a constant weight more or less, I would...
    view full answer...
  • Suspension Enhancement Recommendation for 1999 Dodge Ram 1500 with Fifth Wheel Hitch
    The suspension kit you need for your 1999 Dodge Ram will actually have to be a Timbren like the part # TDR1525H2 as the air bag kit brackets are not compatible with the frame brackets of the fifth wheel kits. The Timbren kit I mentioned will provide up to 6,000 lbs of suspension support when needed and won't require any air bag pressure maintenance so in a lot of ways it's a better option than air bags.
    view full answer...
  • Suspension Enhancement Recommendation for 2001 Dodge Ram 2500 with B and W Gooseneck Hitch
    I have a suspension solution that will work well for you, but due to how the air bag kits install they are not compatible with fifth wheel hitch rails like what you have in your 2001 Dodge Ram 2500. Instead the Timbren kits will work great. If you have a 4 wheel drive vehicle the kit you would need is the part # TDR1525H4. If you have a 2 wheel drive model you instead would want the part # TDR1525H2.
    view full answer...
  • Are Timbren Vehicle Suspension Enhancement Springs Needed for 5th Wheel Towing, 1995 Dodge Ram 1500
    The vertical pin weight of a 5th wheel trailer should be between 15 and 20 percent. On an 8,000 pound trailer, that equates to 1,200 to 1,600 pounds pressing down on the bed of the 1995 Dodge Ram 1500. This is a fair amount of weight and will most likely cause some sag at the rear and suspension enhancement can help. The addition of springs like the Timbren Vehicle Suspension, # TDR1525H2, will help keep the truck level and absorb road shock when towing your 5th wheel trailer. They will...
    view full answer...
  • Suspension Enhancement for 2001 Dodge Ram 2500 with B&W Gooseneck Hitch Installed
    I do have an option for you, however we do not have a rear air bag system available that is compatible with an in-bed hitch like the B&W Turnoverball Gooseneck on your 2001 Ram 2500. The mounting brackets for all of the air bag systems will use the same space on the truck frame that is needed for your gooseneck brackets. With this in mind the best solution will be a jounce-style spring that simply replaces the factory bump stop on your Dodge Ram like the Timbren Rear Suspension Enhancement...
    view full answer...
  • Timbren Front Suspension Enhancement for 2011 Ram 1500 Crew Cab with Snow Plow
    Rubber jounce springs like the Timbren # TDR1525H2 that you referenced help support your suspension when it is under load, but otherwise do not affect ride quality (a good thing). They do not add height to your suspension. Do please note that the kit you referenced is a rear suspension kit for Ram trucks, but it does not fit your 2011 Ram 1500 Crew Cab. If you need a front hitch for your truck to accept a snow plow we offer # 65062 from Draw-Tite. The installation of this item on your...
    view full answer...

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Info for this part was:

Employee Michael H
Expert Research:
Michael H
Employee Jeffrey L
Expert Research:
Jeffrey L
Employee Jacob T
Video Edited:
Jacob T
Employee Chris R
Video Edited:
Chris R
Employee Mary K
Updated by:
Mary K
Employee Wilson B
Updated by:
Wilson B
Employee Michael B
Updated by:
Michael B
Employee Carrie F
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Employee Bethann B
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Employee Jonathan Y
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