bing tracking image
  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
2019 Mercedes-Benz GLS
Special Savings on Select Timbren Items. See Cart for Savings.
Timbren

Timbren Rear Suspension Enhancement System

Part Number: TFR1502D
In Stock
$269.36
Retail:$316.90
You Save: $47.54
Vehicle Suspension
Not Confirmed to Fit

2019 Mercedes-Benz GLS

Will this fit?

To see if this custom-fit item will work for you please tell us what vehicle you'll use it with.

Instant Rebate
zoom in icon
slider vertical icon
zoom out icon
Comment field cannot be left empty.
Name field cannot be left empty.
By submitting this form, you understand and agree to our Terms of Sale, Website Terms of Use, and Privacy Policy.

Thank you! Your comment has been submitted successfully. You should be able to view your question/comment here within a few days.

Error submitting comment. Please try again momentarily.

Product Images

Customer Photos

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 TFR1502D can be ordered online at etrailer.com or call 1-800-940-8924 for expert service.
  • All Info
  • Reviews (6773)
  • Q & A (0)
  • Photos

Timbren Vehicle Suspension - TFR1502D

  • 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.



FR1502D - Rear Suspension Enhancement System with Aeon Hollow Rubber Springs by Timbren

Installation Details TFR1502D Installation instructions

This Product Fits The Following Vehicles




Customer Satisfaction Score:

Ratings & Reviews

4.7

3539 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:

Easy to install helps with heavy trailer stability as I had hoped. Takes stress off the factory shocks and coils.



by:

My second set due to buying a new truck. I consider these vital when towing a TT with my F150. They maintain a correct ride height and reduce sway dramatically. At the same time, they do not affect unloaded ride quality...easy to install too!



by:

The install was very straight forward and if one can turn a wrench or follow instructions no problem, Haven't carried a load or towed yet but normal service is as normal.



by:

Installed in an hour on saturday morning before breakfast. Loaded my Can-Am Outlander Max 800CC ATV in the back and truck stayed level. Handled so much better, I strongly recommend this product as an effective solution that is also inexpensive.



by:

Easy install & fast shipping! Works gre at!



by:

Made a big difference in how the vehicle tows when we have the camper hooked.



by:

Delivered in 3 days, installed with just a few hand tools total time took about 20 minutes. Tested immediately with 2 tons of mulch in the bed of my truck. Best I have seen for he money. Awesome!!! Great product.



by:

Great product and great customer service



by:

I bought these for a 2020 Ram 2500 because they had great reviews here and at a lot of other places around the internet. They do not fit correctly. On the passenger side, they are almost touching the frame with no load in the bed or on the hitch. The ride is absolutely terrible, very rough and painful. The ONLY time it's tolerable is with my 3000 pound camper in the bed of the truck. I would have returned these, but I waited a few months to install them, so it was too late by the time I realized how bad they were for my application. If you have a truck that is always loaded with a lot of weight, this would be awesome. Otherwise, spend the extra money and get air bags. I will be installing air bags and throwing these in the trash.



by:

Don't see $500 worth of parts. Not even close. 2 rubber bump spots and a bracket.



by:

Easy installation. However, product has not been tested in a manner appropriate to provide rating.



by:

Fast Shipping



by:

I have not used them yet. I will do that this weekend. But man they were easy to install. The instructions were great and easy to follow. So far so good.



by:

Installed on my 2018 Raptor. Easy install, works great, and no sag pulling my toy hauler.



by:

Very easy to install 30 min. tops. Have not tried them with the trailer yet but I'm sure they will do the trick. Very pleased!



by:

Made a huge difference - not just in load management when hauling 30 sheets of plywood, but greatly improved the handling & ride in my front-wheel drive work van. I just traded in for a newer model van, so I'm getting the same units again!



by:

serve its purpose. just something extra to help with my towing



by:

These look like they will cure the evils of the heavy load God's. Easy to install and they look like they are quite stout. I will find out in a couple of weeks from now.



by:

Hitch fit great and the instructions were easy to follow.



by:

Install was easy. Raised our Thor Gemini up as product said it would. Great job etrailer!



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:

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:

Works great on my 2016 town and country for hauling my pop up camper.



by:

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



by:

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


25
3539
Show More Reviews

See what our Experts say about this Timbren Vehicle Suspension

  • Rear Suspension Enhancement for 2008 Ford F-150 to Reduce Suspension Sag When Towing
    The amount of tongue weight you have at 965 lbs it probably higher than what your F-150 is rated to tow which is why you are experiencing sag even with a weight distribution system. Suspension enhancement can help give you more support but if you are above the weight capacity of your vehicle suspension enhancement would not be enough to allow you to safely tow beyond that. The SumoSprings kit part # SSR-108-40 would give you an additional 1,000 lbs of support when towing though and would...
    view full answer...
  • Do Air Lift AirCell Custom Helper Springs Have a Load Rating
    There is no load rating attached to the Air Lift AirCell Custom Helper Springs Kit AL52218. The note in the linked instructions says that they will not alter the GVWR or payload of your 2013 Ford F-150, so as long as you keep the capacity under those weight limits the kit will provide your F-150 with support from heavy loads. In regards to your second question you would still need to use a weight distribution hitch; the Timbren Rear Suspension Enhancement System # TFR1502D help level your...
    view full answer...
  • Can More Than One SumoSprings CSS-1168 be Used at the Same Time
    If the SumoSprings # CSS-1168 is not picking up enough slack on your 2020 Ford Expedition, you can definitely add on to it. I spoke with SumoSprings and they said it is perfectly fine to add on another # CSS-1168 if the first one isn't getting all the sag under control. That being said, as the Timbren # TFR1502D is designed to work on a 2004 to 2014 Ford F-350, I cannot recommend it as a fit. If this does not fix your issue, however, you will most likely need to use a weight distribution...
    view full answer...
  • Installation of a Timbren Vehicle Suspension on a 2014 Ford F-150
    Most likely there is a bolt holding the factory bump stop on your 2014 F-150. You simply raise your truck up off the ground and use a 13mm socket to remove the bolt. Take a look at the video I included to see the removal of the bump stop and installation of the suspension, even though it's on a 2010 F-150 and different Timbren suspension # TFR1504D. Once done, you will be ready to install the new Timbren rear suspension enhancement # TFR1502D you referenced. Ideally, the amount of space...
    view full answer...
  • Rear End of 2011 Ford F-150 Still Sags Even with Weight Distribution
    The problem that you are experiencing is a common issue with 1/2 ton trucks like your 2011 Ford F-150. The rear suspension on 1/2 ton trucks will still allow some sag even when using weight distribution. While making some adjustments to the set up of the weight distribution system might help ultimately you will likely need some rear helper springs to eliminate the sag. The helper springs don't have to be air bags. You could use Timbren Rear Suspension Enhancement System Item # TFR1504D...
    view full answer...
  • Recommended Suspension Enhancement To Reduce Sag When Towing Trailer With 2012 Ford F-150
    If you have sag at the back of your 2012 F-150 when towing a load that stays pretty consistent then the best way to help with that is by installing suspension enhancement like part # TFR1504D for a 4-wheel drive or part # TFR1502D if you have a 2-wheel drive truck. These are rubber springs that do not effect the ride of your truck when it is not under load but when towing will become more rigid to help add additional support. Air springs like part # F2525 are a better for your truck when...
    view full answer...
  • Can Timbren Rear Suspension Enhancements Be Used With Weight Distribution On 2008 Ford F-150
    The use of rear suspension enhancement along with a weight distribution kit is not recommended. They will tend to work against one another. If sag on your 2008 Ford F-150 is caused by a load or a fifth wheel or gooseneck trailer then suspension enhancement is the way to go If your F-150 is a 2-wheel drive I recommend part # TFR1502D. This system helps provide additional support to give you a smooth, comfortable ride and will not affect the ride when your truck is empty. It will become...
    view full answer...
  • Weight Distribution System Recommendation for a 2013 Ford F-150 Towing 8500 lb Trailer
    Actually for towing a trailer as heavy as yours I have a better solution than suspension enhancement. Instead you would want a weight distribution system. Not only will weight distribution help prevent rear suspension sag like the suspension enhancement, but it will also move part of the tongue weight of the trailer up to the front axle of the trailer which will help with braking and handling unlike suspension enhancement. The best way to pick out a weight distribution system is to base...
    view full answer...
  • How To Upgrade the Factory Trailer Hitch On a 2010 Ford F-150
    The factory trailer hitch on your 2010 Ford F-150 has a class III rating. This will be sufficient to tow your boat and trailer but if you would like to upgrade to a class IV then the only option for this is the TorkLift SuperHitch Hero Trailer Hitch Receiver part # TLF1005H. The other options for your F-150 will not work because the bumper brackets are all integrated into the trailer hitch which was pointed out by the dealer. Please note, due to the weight of your trailer you will want...
    view full answer...
  • What is Recommended Distance between Timbren Spring and Axle
    You will want to have the rubber spring of the Timbren part # TFR1502D sit close to the axle but not touching it when unloaded. There isn't an exact dimension for what will work best as people have different preferences and some vehicle suspensions move more in general. Timbren likes to recommend 1 inch between the axle and the Timbren when the truck is unloaded. We have found that this works the best.
    view full answer...
  • Rear Suspension Enhancement Compatible With Lifted 2004 Ford F-150
    You will be able to still use some suspension upgrades on a lifted 2004 Ford F-150. If the lift kit you have does not change the rear leaf springs on your F-150 you can still use one of the following kits. TorkLift StableLoad Suspension Upgrade w Quick-Disconnect # TLA7311S RoadActive Suspension Custom Leaf Spring Enhancement Kit # RAS3612 SuperSprings Custom Suspension Stabilizer and Sway Control Kit # SSA28 The Timbren Rear Suspension Kit # TFR1502D can also be used provided you...
    view full answer...
  • Will the Timbren Suspension for the Ford F150 Affect Unloaded Ride Height
    When unloaded you will not see a height increase with the Timbren System # TFR1502D installed on your 2010 Ford F150. You should find that when loaded with either cargo in the bed of your truck or towing a trailer that the rear does not sag as much. Bottom line, when unloaded you will not see difference in ride quality or height with the # TFR1502D installed in your vehicle.
    view full answer...
  • Will Timbren's Work with a B&W Gooseneck Hitch on a 2012 Ford F-150
    Yes, the Timbren Rear Suspension Enhancement System part # TFR1502D for 2WD or part # TFR1504D for 4WD will work with the B&W Turnoverball Underbed Gooseneck Trailer Hitch part # BWGNRK1104 you have installed in your 2012 Ford F-150. The mounting brackets do not interfere with one another as one mounts underneath the frame (Timbren's) and one mounts on the side of the frame (B&W). The Timbrens will provide excellent support when using your truck to pull your gooseneck trailer. In addition...
    view full answer...
  • 2015 Ford F-150 Sags at the Back When Coupled to Trailer with 550 Pounds Tongue Weight
    Sag at the rear of a vehicle such as your 2015 Ford F-150 can happen from 1 of 2 ways. First, weight in the actual truck bed can cause sag. Second, the tongue weight from a coupled trailer can cause sag. The ways to deal with the sag are different. When sag is caused by a trailer the recommended solution is weight distribution, not helper springs. Weight distribution will more evenly distribution the force of the tongue weight to all of the axles on the tow vehicle and trailer so it treats...
    view full answer...
  • What is the Towing Capacity of a 2007 Ford F-150
    The maximum towing capacity of your 2007 Ford F-150 will vary depending on cab, wheel size, drive type, engine size, and rear axle ratio. Therefore, the only true way to tell what your trucks towing capacity is would be to find both the Gross Combined Weight Rating (GCWR) and the Gross Vehicle Weight (GVW). These figures can be located on the information tag inside the drivers door jamb. If you subtract the GVW from the GCWR, that will give you the maximum gross trailer weight (GTW) you...
    view full answer...
  • Which Timbren Suspension Kit Fits 2014 Ford F-150 XLT
    The Timbren kit part # TGMRCK25D that you referenced does not fit your 2014 Ford F-150 and that is why you are having a hard time with the install. Instead you need the # TFR1504D if you have a 4 wheel drive truck or the part # TFR1502D if you have a 2 wheel drive.
    view full answer...
    Image 1 for
  • Timbren Rear Suspension Enhancement System for 4WD 2006 Ford F150
    The Timbren Rear Suspension Enhancement System item # TFR1502D you referenced is for 2WD only 2006 Ford F-150s. For your 4WD F-150 I recommend the Timbren Rear Suspension Enhancement System item # TFR150D. This system has a 6,000 lbs weight capacity and will definitely help to address the sagging you are feeling when your truck is loaded down.
    view full answer...
  • Will Exceeding Truck's Towing or Payload Capacity Damage Suspension Components
    Failed suspension components like what you described on the F-150 you perform work on can certainly be from exceeding its payload or tongue weight capacity from an overloaded bed and trailer. It's hard to say for certain that this is the culprit as I'm not sure exactly how heavy a trailer he tows with the truck but the fact that it keeps happening (and way sooner than it should) after repairs indicates that something is indeed being overloaded. Based on my research the 2005 Ford F-150...
    view full answer...
  • Solution for Rear-End Sag in 2012 Ford F-150 Supercab Towing 17-Foot Camper
    Since your F-150 is only 3 years old odds are its spring suspension is still in good shape. For this reason I recommend a weight distribution hitch to correct your rear end sag when towing your camper, rather than a helper spring kit. Helper springs are better for supporting your stock suspension with cargo loads in the truck bed but for your application towing a travel trailer a weight distribution (WD) system is the way to go. You can use the linked page to see all WD systems that also...
    view full answer...
  • Suspension Enhancement Recommendation for a Lowered 2005 Ford F-150
    We do have a suspension enhancement kit that will work with a lowered 2005 Ford F-150, but it is an Air Lift kit. Take a look at the Air Lift SlamAir springs for lowered trucks, # AL59210. This kit was designed for trucks that have been lowered 2 to 6 inches. Since you are at 2 to 3 inches this kit would be perfect for you. You can fill these air bags up if you have a compressor at home or by using a gas station air compressor or you can add an on-board unit like # AL25592. It will allow...
    view full answer...
  • Timbren Suspension Enhancement Recommendation for a 2010 Ford F-150 Towing a Horse Trailer
    The Timbren suspension enhancement system # TFRTT1502D is designed for service vehicles (fire trucks, ambulances, utility trucks) but not regular trucks. For your 2010 Ford F-150 you would want to go with the 6K system # TFR1502D that you referenced. It will work well with your horse trailer. Even though the trailer is more than the 6K capacity of the system, the tongue weight of the trailer that pulls the truck down is much less so the system will be very effective. I have included a link...
    view full answer...
  • Can Timbren Helper Springs be Installed on a 2007 Ford F-150 with a Slight Lift
    Yes you can still use Timbren helper springs # TFR1502D on your lifted 2007 Ford F-150. The springs only attach at the top to the truck frame. There are 1 inch spacers included with the kit which you will likely need to use with the lift on your truck. Without the spacers the truck would have to sag more before the springs made contact with the axle.
    view full answer...
  • Suspension Enhancement and Gooseneck Hitch Recommendation for 2007 Ford F-150
    I have a great suspension enhancement solution for your 2007 Ford F-150 that you plan to install a gooseneck hitch in the bed of but the air spring kits you mentioned do not fit with in-bed hitches. So you'd want to go with a Timbren system like the part # TFR1502D which fits your truck, provides the same suspension support, and is compatible with an in-bed hitch. The other benefit is that you don't have to ever worry about checking air pressure in air bags. Then for a gooseneck hitch...
    view full answer...
  • Helper Springs for a 2014 Ford F-150 with Full Truck Bed and towing 7,000 Pound Trailer
    Even with the bed on your 2014 Ford F-150 loaded and towing a 7,000 pound trailer the weight on the actual rear axle of the truck is still well under 6,000 pounds so going with the 6K rated Timbren springs, # TFR1504D for 4x4s or # TFR1502D for 2-wheel drive models will work well. The 7K kits are designed for severe service vehicles only.
    view full answer...


< Previous



Do you have a question about this Vehicle Suspension?


Info for this part was:

Employee Jackie C
Expert Research:
Jackie C
Employee Mike L
Expert Research:
Mike L
Employee Michael H
Expert Research:
Michael H
Employee Jameson C
Expert Research:
Jameson C
Employee John H
Expert Research:
John H
Employee Adam R
Expert Research:
Adam R
Employee Jeffrey L
Expert Research:
Jeffrey L
Employee Jacob T
Video Edited:
Jacob T
Employee Dustin K
Video Edited:
Dustin K
Employee Chris R
Video Edited:
Chris R
Employee Cole B
Installed by:
Cole B
Employee Robert C
Installed by:
Robert C
Employee Mary K
Updated by:
Mary K
Employee Wilson B
Updated by:
Wilson B
Employee Michael B
Updated by:
Michael B
Employee Carrie F
Updated by:
Carrie F
Employee Lincoln B
Updated by:
Lincoln B
Employee Jonathan Y
Video by:
Jonathan Y

At etrailer we provide the best information available about the products we sell. We take the quality of our information seriously so that you can get the right part the first time. Let us know if anything is missing or if you have any questions.