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Timbren Rear Suspension Enhancement System
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Timbren

Timbren Rear Suspension Enhancement System

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$269.36
Retail:$316.90
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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

3619 reviews
5 Stars
(2865)
4 Stars
(478)
3 Stars
(115)
2 Stars
(75)
1 Star
(86)
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:

Rough ride when not loaded but no more sag in the rear. Does the job!



by:

Easy to install and worked great!



by:

Works great even had my nephew buy them for his Dodge truck



by:

Your company ships right away and very helpful web site easy to use have not installed yet but will let you know asap thanks for your help



by:

Definitely worked as advertised, very easy to install.



by:

Keeps truck level. Only down side is it makes for a harder ride when compressed



by:

These did wonders for body roll when towing my fiver.



by:

This is a great product and greatly improves the ride of your vehicle.



by:

Easy install. Product arrived before delivery date. Can already feel difference when just driving. Will hook up camper in a few week to see the real results.



by:

Easy to do. Took 20 min. Smoother ride for sure.



by:

Good option for my vehicle, fast delive ry!!



by:

The product worked out great... Did exactly what I needed it to do...Easy to put on..



by:

It's still holding strong. Very noticeable through curves.



by:

Easy install...great service



by:

Work well when towing but slap a little when driving with no load



by:

installed them last week went on a trip they performed as advertiszed improved ride and stabilty very happy with them



by:

Improves handling. Helps under load. Easy enough to install.



by:

Easy to install. Takes out the "harshness" over poor roads.



by:

I have not installed these yet but they came delivered when promised and look like they will do the job I needed them for.



by:

wow , it did just what I wanted it to do and it was a great quick fix to my dilemma. ten minutes and I was fixed.



by:

Just finished the install and testing at a glance I would say the product is great very easy to install and helped with all things intended thanks.



by:

Needed this to lift and stabilize the rear end of my 2012 Sienna. Works very well!



by:

So far everything is working. Just as I though. The only complaint I have is the wait time that it took (12) days from the order date to when I receive the item.



by:

Customer service is top notch!! I recieved my order with an empty box! I called and they immediately shipped a new package out and I received it within days!



by:

Works absolutely perfect, I recommend this product for towing campers and heavy loads! Won't be disappointed


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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.
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  • 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.
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  • 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.
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  • 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
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  • Can Equal-i-zer Pole Tongue Adapter Be Used on Boat Trailer Tongue Wider Than 5 Inches
    I do have a solution for you, however I reached out to my contact at Equal-i-zer and he does not recommend using the Pole-Tongue Adapter # EQ95-01-5950 in the manner you described. He said that turning the L-brackets would affect the overall stability of the adapter so he couldn't ensure that it would hold up to the torque of a weight distribution system. Also keep in mind that most aluminum trailers aren't rated for use with a weight distribution system because of the stress they put on...
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  • 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...
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    Image 1 for
  • 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.
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  • 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...
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  • 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.
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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...
  • 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...
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  • 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...
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  • 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.
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  • Is there a Front and Rear Timbren Kit for a 2006 GMC 1500 HD 4-Wheel Drive
    We do not have a kit that has both the front and rear Timbren Suspension enhancement systems included. But we do have Timbren kits that are confirmed as a fit for both the front and rear for your 2006 GMC 1500 HD 4-wheel drive. I have provided a link to the Timbren suspension enhancement kits that are confirmed as a fit for your truck. The Timbren kit that you referenced # TGMRCK25S is intended to be use as a rear suspension of your truck. I have provided a link to these being installed...
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  • Timbren Suspension Enhancement Recommendation for 2008 Chevy Silverado 2500HD
    Timbrens would be the way to go since you are hauling quite a bit of weight. So for your 2008 Chevy Silverado 2500 you'd want the part # TGMRCK25S which can give you up to an additional 6,000 lb of suspension support. You should note that this kit does not give you the ability to have more payload or towing capacity. Just to better support the current capacity of the vehicle. I attached an install video for this kit for you to check out as well. I recommended this kit over the other options...
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  • 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...
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  • 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.
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  • 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...
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  • 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...
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  • 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.
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  • Jounce-Style Suspension Enhancement for 1999 Chevrolet Silverado with 6 Inch Suspension Lift
    For your 1999 Chevrolet Silverado 1500 I suggest the Timbren Suspension Enhancement # TGMRCK25S. This kit is designed for the 4-wheel drive 1500 with the extended or Crew Cab. You'll also need spacers because of the lift kit. The 1 inch spacers you'll need are # A25723-90AH00. The spring and 6 spacers will measure about 12 inches.
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  • 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.
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  • 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...
  • What Timbren Rear Axle Suspension Kit Fits 2006 Chevrolet Silverado 1500HD 4X4 Extended Cab
    Since your Silverado is the 4X4 1500HD with extended cab the correct rear axle Timbren kit is part # TGMRCK25S. I confirmed this with my contact at Timbren. The kit you referenced, # TGMRCK15S, is the correct kit for 2-door trucks without the extended cab. These Timbren helper springs install without drilling and will work with or without factory top overload springs. Installation requires permanent removal of the factory bump stops. The video link provided will show you the installation...
    view full answer...


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