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  1. Vehicle Suspension
  2. Timbren
  3. Bump Stops
  4. Towing/Load Leveling
  5. Extra Heavy Duty
  6. Rear Axle Suspension Enhancement
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2025 Ram 2500
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Timbren

Timbren Rear Suspension Enhancement System

Part Number: TGMRCK25S
$269.36
Retail:$316.90
You Save: $47.54
Vehicle Suspension
Not Confirmed to Fit

2025 Ram 2500

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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 - TGMRCK25S

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

Installation Details TGMRCK25S Installation instructions

This Product Fits The Following Vehicles




Customer Satisfaction Score:

Ratings & Reviews

4.7

3626 reviews
5 Stars
(2882)
4 Stars
(471)
3 Stars
(116)
2 Stars
(69)
1 Star
(88)
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:

A little more harsh on the bounces than I would like when unloaded. When loaded works as it should.



by:

Easy to install, They work great, However they do make the truck ride quite a bit rougher without a load.



by:

Easy to install and they work great.



by:

East install, haven't towed my trailer yet



by:

Excellent company great customer servic e.



by:

easy to install have hooked to trailer yet to see how it helps



by:

Ordered and came quicker than I expected. Installed easy but haven’t got to tow with them installed but I think are going to help greatly.



by:

Easy install. Works fantastic no more saggy butt.



by:

Well, we said third time is the charm but not this time. I received the box on Saturday and yes, the same thing. The box was torn open on the front side seem and parts are missing,,, again. All I can say is "MORE TAPE, MORE TAPE,, MORE TAAAPE!!! I spoke to Phillip H. this morning and he is sending me just the missing parts. Hopefully it will get here in time for the next trip on July 1st. Fingers crossed!



by:

These should help when pulling my travel trailer!



by:

Easy to install. Can’t wait to see how much it improves towing my trailer.



by:

Can’t believe how fast they have arrived! Haven’t installed yet but looks like easy enough to install.



by:

I’m so glad I can across this made a huge difference in pulling my food trailer



by:

Great customer service. Shipped and received very fast!



by:

Great product. Easy installation



by:

good customer service



by:

Excellent quality. Easy to install. And work like a charm! Highly recommend this product to anybody that hauls heavy loads and doesn’t want their vehicle squatted down.



by:

Installed in 15 minutes with jack and block of wo1od to press fit them in to cup.
awesome!



by:

Rec'd today, looks Great. Haven't installed yet.



by:

Order delivered on time and in good condition. Good customer service and follow up.



by:

Great product! Excellent instructions! Great results!



by:

I have had airbags before and debated on trying Timbren's for my latest dually instead. I have not been disappointed. I haul both a Lance cab over camper and a gooseneck trailer with a backhoe and these Timbren's keep the truck level and balanced. I would recommend them for the price savings and ease of install over airbags. I have a friend with a single rear wheel F350 and he has the same good results hauling as well.



by:

Easy install. Haven't hauled my trailer yet.



by:

You would even know the trailer had a load in it…works perfectly!



by:

Great product fast shipping


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3626
Show More Reviews

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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    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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    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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    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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    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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    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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  • 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
  • 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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    For a suspension enhancement system that will not interfere with the ride of your 2003 Sierra when empty I recommend the Timbren Rear Suspension Enhancement System, part # TGMRCK25S. This replaces the axle bump stops on your truck, and per my contact at Timbren does not interfere with the Quadrasteer system. These springs require no maintenance and act independently for off-center loads in the rear of your truck. The become more rigid when additional weight is added to the truck. I have...
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  • Comparing Timbren Kits GMRCK25S & GMRCK15S for 2003 Silverado 1500 ZR71
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  • 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.
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    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...
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  • Suspension Enhancement Recommendation for 2003 Chevy Silverado 1500HD with 2 inch Lift
    The kit you referenced is actually designed for heavier duty versions of the Silverado like the 2500 and the 3500. I wish SumoSprings offered lift spacers for their kits but they do not currently. Best solution will be to use the # TGMRCK25S which fits your truck and then go with the spacer part # A25723-90AH00 to take up the additional space. Each of these spacers is 1 inch thick so you'd need a total of 4.
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  • When Would you Want to Remove/Install Spacer of Timbren Kit part # TGMRCK25S
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  • Will Rear Suspension Enhancement For 2006 GMC Sierra Prevent Bouncing When Towing Camper Trailer?
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