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Timbren Rear Suspension Enhancement System
Timbren

Timbren Rear Suspension Enhancement System

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$269.36
Retail:$316.90
You Save: $47.54
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 TGMRCK25S can be ordered online at etrailer.com or call 1-800-940-8924 for expert service.
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Timbren Vehicle Suspension

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

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
  • Bump stop height: 5-1/8"
  • Spacer height: 7/8"
  • 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.



GMRCK25S - Rear Suspension Enhancement System with Aeon Hollow Rubber Springs by Timbren

Item # TGMRCK25S

Installation Details TGMRCK25S Installation instructions

This Product Fits The Following Vehicles




Customer Satisfaction Score:

Ratings & Reviews

4.7

3621 reviews
5 Stars
(2865)
4 Stars
(483)
3 Stars
(114)
2 Stars
(74)
1 Star
(85)
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:

Great product. Does exactly what it is made for.



by:

Ordered these for pulling camper, very good service from etrailer. Does what I wanted, would buy again. Thank You



by:

These worked great for my F150. Love them and would buy again!



by:

Easy to install works great with no issues. Would def buy again.



by:

The product seems well built and installation was easy.
They did not line up centered over the axle even at the end of the adjustment slots. Not sure how that will effect performance when my Cruiser is loaded.



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:

It's in it's working. I have no reason to complain.



by:

Very happy it fixed my nightmare problems. I highly recommend the system.



by:

Simple install, and did the job, no more rear sag when towing loads



by:

Product was excellent a little too long for my truck. Made a phone call and new part was shipped out to me next day. Great product and customer service



by:

Install was pretty simple. I used the spacer and after test drive it did seem that ruff on bumpy road. I ‘m wait to try soon pulling my 8000 lb camper.



by:

product fit as stated but the directions could be a better explained ,wasn't sure if the bolts went through the frame where old stop came out , if it did the bolts were to short . still would recommend this product.



by:

Great suspension helper. Easy to install. Holds the payload well.



by:

I chose these over airbags this time, the ride is just as good if not better when towing now. The install took less than 20 minutes for both. I really like the simplicity of them over the airbags.



by:

Installation went good except the bolts sent with were too big to fit into the factory Nissan Titan holes. Used 13mm bolt and worked fine. Overall very pleased.



by:

Everything still works great. Install was pretty easy. Thanks again



by:

We have the SES on two other trucks and are extremely happy with them - therefore we have just received the third set for a new truck. Customer service is unbelievably good - a rare experience these days. Thank you, Timbren!



by:

It is awesome,they are doing exactly what they are supposed to be doing.



by:

super easy to install. I only used the jack to hold the u-bolts in place. Can't wait to put them to use!



by:

This is my third tundra and my third set of timbrens, they work great



by:

very simple to install , i have not put them to the test yet but the product seems well made and able.



by:

The product does as expected. I am very happy with the performance.



by:

I have only given 4 stars because I have yet to drive any distance with them. Install was easy, I used a floor Jack to let the suspension drop. Did passenger side first as in other reviews it was deemed to be harder to change. For the passenger side I mounted the tambren after mounting the bracket. The driver side I put the tambren on and the mounted.



by:

Rides great



by:

Good value. The installation was straightforward and directions though sparse were sufficient for a 15 minute job. Make sure to spray old parts with Kroil or some sort of lubricant before removal. Unloaded truck now sits with 1/2” of space for normal suspension feel. Bought this to help with towing car hauler. Have not done that yet.


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3621
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See what our Experts say about this Timbren Vehicle Suspension

  • RoadActive Suspension Enhancement for 2004 GMC Denali with Quadrasteer
    I have an option for you, but the RoadActive Suspension Custom Leaf Spring Enhancement Kit # RAS4611 is not compatible with the Quadrasteer system on your 2004 GMC Sierra Denali. Your best bet and the only confirmed suspension enhancement solution that won't interfere with your Quadrasteer components, is the Timbren Rear Suspension Enhancement System # TGMRCK25S. These hollow rubber springs sit above the rear axle to help stabilize and level your Sierra.
    view full answer...
  • Timbren Kit Recommendation for 2006 Chevy Silverado 2500HD
    You would definitely want to go with the Timbren kit part # TGMRCK25S for your 2006 Chevy Silverado 2500HD over the other kit you mentioned. The other kit is for severe service applications so it would give you a pretty harsh ride quality. The # TGMRCK25S will give you the support you are wanting without killing the ride quality.
    view full answer...
  • Timbren Suspension Kit that Fits 2005 Chevy Silverado 1500HD
    For your 2005 Chevy Silverado Silverado 1500HD the correct Timbren kit is the part # TGMRCK25S which provides 6,000 lbs of support. There isn't a lower capacity Timbren available but we do have a SumoSprings kit part # SSR-211-47 which provides 1,500 lb support.
    view full answer...
  • Overall Height of Timbren Spring Kit part # TGMRCK25S
    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. This allows the suspension to feel when the vehicle is unloaded and still gives you support when needed when towing. I spoke to my contact at Timbren and they told me that the overall height of the # TGMRCK25S is 7-1/4 inches
    view full answer...
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  • Can Timbrens for 2003 GMC Sierra 1500 Be Used without Spacer
    The correct Timbren Rear Suspension Enhancement System for a 2003 GMC Sierra 1500 LD is part # TGMRCK15S for extended or regular cab models and part # TGMRCK25S for crew cab models. The springs once installed should be anywhere from 1/2" - 1-1/2" from the contact point. If you would like to decrease the gap then you can remove the spacer from the latter kit which would make the spring not engage as often.
    view full answer...
  • Timbren Front and Rear Suspension Enhancement For a 1999 Chevrolet Silverado 1500
    The Timbren # TGMRCK15S have an 8,600lb capacity while the Timbren # TGMRCK25S only have a 6,000lb capacity. If your 1999 Chevrolet Silverado is only used for occasional heavy loads I would go with the 6,000lb kit otherwise the 8,600lb kit will provide you with the best support if you always have heavy loads. For the front we have the 2WD # TGMFK25S or 4WD # TGMFK15A Timbren springs. These are primarily best when using a snow plow as they have a very heavy 14,000lb capacity. The SumoSprings...
    view full answer...
  • Will the Timbren Rear Suspension Enhancement # TGMRCK25S Fit a 2000 Chevy Silverado 2500
    The Timbren Rear Suspension Springs, # TGMRCK25S, will install on your 2000 Chevrolet Silverado LS 2500 HD without needing to drill new holes. The top of the mounting brackets for the Timbren springs have two holes that will use the existing holes from the factory bump stop. The underside of the mounting bracket has the round surface where the Timbren spring attaches using one bolt. I have attached an image from the installation instructions showing how the Timbren mounting bracket uses...
    view full answer...
    Image 1 for
  • Jounce Bumper Helper Spring Recommendations for Towing 5th Wheel With 2004 Chevy Silverado
    The 8K Timbren, part # TGMRTT35S is designed for very heavy duty applications such as tow trucks, trucks carrying very heavy slide-in truck bed campers or that have a heavy service body installed. It would be overkill for your needs. For your application, the 6K capacity kit, part # TGMRCK25S would be a better choice. This being said, once the pin weight of your 5th wheel compresses your rear leaf springs and takes up the 1/2 to 1-1/2 inch preload on the Timbrens so they sit on the axle...
    view full answer...
  • Can Timbren Springs # TGMRCK25S Be Used in Place of Weight Distribution on 2005 Chevy Silverado
    A suspension enhancement system like the Timbren Springs, part # TGMRCK25S, you have referenced, is primarily designed to suspend the weight of anything carried on your 2005 Chevrolet Silverado 2500. Although they would indeed eliminate the sag on the rear of your vehicle, the tongue weight of the travel trailer applied to the rear axle of your Silverado would lower the amount of the vehicle weight applied to the front axle. This is potentially dangerous because shifting too much weight...
    view full answer...
  • Will the Timbren Rear Suspension Enhancement System Fit a Lowered 2001 Chevy Silverado
    The overall height of the Timbren Rear Suspension Enhancement System part # TGMRCK25S is 7-1/4" with the included spacer installed or 6-1/4" without the included spacer installed. If the 6-1/4" is too tall for your lowered 2001 Chevrolet Silverado you can use the SumoSprings Solo Custom Helper Springs part # SSR-209-40 for 1500 or part # SSR-211-54 for 2500/3500 models. If you take a bread knife, you can trim these down to fit the space you need them to.
    view full answer...
  • What Position to Set Up Pivot Arms on B&W Patriot 5th Wheel Hitch
    Where you'll attach the pivot arms on the B&W Patriot # BWRVK3255 just depends on how much clearance you need from the cab of the truck, but in most cases you'll be just fine using the closest setting to the cab. You'll want to make sure that the hitch height is in the 50-1/2" area before the trailer is coupled to the 5th wheel hitch; any squat that you're experiencing afterwards should be negligible as long as your suspension system is in good working order. If you do couple the trailer...
    view full answer...
  • Will Timbren Rear Suspension Kit # TGMRCK25S Fit 2003 Chevy Silverado 1500 2WD
    Yes, the Timbren Rear Suspension Enhancement System # TGMRCK25S is confirmed to fit your 2003 Chevy Silverado 1500 with 2WD. These durable Aeon rubber springs will provide up to 6,000 pounds of load support and simply replace the factory bump stop for an easy installation. All the needed hardware is included. I have attached an installation video that you can follow along with.
    view full answer...
  • When Are Rubber Spacers Required to Install Timbren Rear Axle Suspension Kit # TGMRCK25S
    The Timbren Rear Suspension Enhancement System # TGMRCK25S is a correct fit for your 2005 Chevrolet Silverado 2500 whether it is a 2WD or a 4WD version. This kit will install without need for the included 7/8-inch thick spacers UNLESS the truck has a suspension lift kit installed already. In this case you'd need to add spacers to make up for that difference in height between the axle and frame. If the truck is standard and has no suspension lift then the spacers will not be needed.
    view full answer...
  • No Gap Between Timbren Suspension System And Axle On 2008 Chevrolet Silverado 2500HD
    Per the instructions for the Timbren Suspension System, part # TGMRCK25S, on medium and heavy-duty trucks there will be constant contact and the system will have no gap. It sounds like you have your system installed correctly and have nothing to worry about.
    view full answer...
  • Fifth Wheel Hitch Recommendation for 2005 Chevrolet Silverado 1500 LD 6.5 Foot Bed
    First, I recommend checking your owner's manual for your Silverado's maximum towing capacity. From what I found, Chevy has determined that fifth wheel and gooseneck trailers should not be towed with the 2005 Silverado 1500 Crew Cab. For example, The owner's manual for the Silverado 1500 Crew Cab, 4 wheel drive, 5800 V8, with an axle ratio of 4.10 lists a maximum towing capacity for the vehicle of 8,400 pounds. So as to not damage your truck, I recommend making sure the gross towing weight...
    view full answer...
  • Can a 2008 Chevy Silverado 2500HD Tow a 16,500 Pound 5th Wheel Trailer
    The GVWR of a vehicle is set in stone. There is nothing you can do to increase the capacity short of replacing the axle, suspension, and other load bearing and drive train components. What suspension enhancement like # TGMRCK25S does is help support the load and keep the rear end from sagging. Since you have a 3/4 ton truck, you are going to be able to tow just about anything. Consult the vehicle owners manual for the towing capacities of the truck. The gross COMBINED vehicle weight rating...
    view full answer...
  • Rear Helper Springs for a 2006 Chevy Silverado 2500 4x4 and 3,300 Pound Slide-in Camper
    You have a good eye, my friend, because Timbren helper springs # TGMRCK25S are exactly the ones that I recommend for your application. Timbren springs are ideal for a load that doesn't change much in weight or position. They will provide more support for the stock suspension on your 2006 Chevy Silverado 2500 and help to keep the truck level. I have included a link to a video showing an example installation for you.
    view full answer...
  • Does the Capacity of Suspension Air Springs Exceed the Payload of a 2009 Chevy Silverado 2500HD
    I do not want to question the owners manual of your 2009 Chevy Silverado, but 2,500 pounds payload capacity sounds awful low. Especially for a 2500HD Duramax diesel. I did some research and found that it should have a payload ranging from 3,481 pounds up to as much as 3,924 pounds. I would call a dealership and have them run the VIN to determine what the payload is. If it ends up being closer to what I found, then the Firestone Ride-Rite Air Helper Springs, # F2250, would be beneficial....
    view full answer...
  • Suspension Enhancement Recommendation for 2004 GMC 2500LD with Quadrasteer
    We have found that the only suspension enhancement kits that fit the GMC trucks with quadrasteer are the Timbrens like part # TGMRCK25S which is a fit for your 2004 GMC Sierra. We have spoken with Firestone and Air Lift a few times on this and they always state they have nothing for the quadrasteer trucks. I attached an install video for you to check out though.
    view full answer...
  • Will Rear Suspension Enhancement For 2006 GMC Sierra Prevent Bouncing When Towing Camper Trailer?
    The Timbren Rear Suspension Enhancement # TGMRCK25S will indeed help to fight the bouncing you are experiencing when towing your 3600lb camper trailer with your 2006 GMC Sierra 1500 2WD but I do not recommend going with this option. The reason for this is the # TGMRCK25S is rated for 6000lbs of weight which is way over the tongue weight of your trailer and as such you will have a very stiff loaded and unloaded ride. Instead I recommend going with the SumoSprings # SS45MR which have a 2800lb...
    view full answer...
  • Which Timbren Suspension Enhancement Kit Fits 2013 Chevy Silverado 2500HD
    For your 2013 Chevy Silverado 2500 you actually need a different Timbren part number due to the change in the bump stop that you mentioned. For that you'd need the part # TGMRTT35D instead. I attached a picture that shows how it attaches to the vehicle frame also.
    view full answer...
    Image 1 for
  • When Would you Want to Remove/Install Spacer of Timbren Kit part # TGMRCK25S
    The spacer of the Timbren kit part # TGMRCK25S that you referenced is designed to allow you to tailor how much engagement you want from the Timbren. If you find that the ride quality is harsh because the spring is engaging too soon you'd just need to take the spacer out. If you feel like you're not getting the support you want from the kit you'd put it back in. In most cases people use the spacer.
    view full answer...
  • How to Choose the Proper Timbren Rear Suspension for a 2005 GMC Sierra 2500 HD
    For your 2005 GMC Sierra 2500 HD, there are two Timbren rear suspension compatible with it. The # TGMRCK25S have a weight capacity of 6000 pounds while the # TGMRTT35S have a weight capacity of 8000 pounds. More than likely you will only need the one with the 6000-pound capacity as the higher capacity one is for trucks that are reaching their payload capacity on a daily basis. Though you're hauling dump trailers every day, that doesn't mean you're nearing your capacity. Of course, if...
    view full answer...
  • Which SumoSprings Fit A 2002 GMC Sierra 1500 Denali With Qudrasteer?
    I reached out to my contact at SuperSprings and the correct SumoSpring for your 2002 GMC Sierra 1500 Denali with Quadrasteer is the SumoSprings Solo Custom Helper Springs - Rear Axle # SS95MR. This will give you 1400lbs of load leveling support when you are towing or carrying a heavy payload and will not affect your unloaded ride like other suspension enhancement options. I included a video of the # SS95MR for you to take a look at.
    view full answer...


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