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

Timbren Rear Suspension Enhancement System

Item # TGMRCK25S
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Retail:$265.18
Our Price: $225.40
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Vehicle Suspension

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Vehicle Suspension TGMRCK25S - Jounce-Style Springs - Timbren
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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. Lowest 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 800-298-8924 for expert service.
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Timbren Vehicle Suspension - TGMRCK25S

  • Timbren
  • Jounce-Style Springs
  • Rear Axle Suspension Enhancement
  • 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
      • Does not affect the empty ride of the vehicle
    • 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


Reduced rear axle sag with Timbren suspension enhancement

Whether you're hauling heavy loads in your bed or cargo area or 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 your rear axle. Hollow rubber springs are bolted to the bottom of the bracket and hang down to where the bottom of the leaf 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.


Action 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.


Trailer swaying as it is towed behind a truck

Because your 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 SES

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.



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

Installation Details TGMRCK25S Installation instructions

This Product Fits The Following Vehicles





Customer Reviews

Timbren Rear Suspension Enhancement System - TGMRCK25S

Average Customer Rating:  4.7 out of 5 stars   (2367 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.

- TGMRCK25S
by:

Best investment for my suspension. I have had them for over a year and haven’t broken any springs these were my third set of springs. I can fit 7-1/2 yards of wood chips on a full load averaging 6200 lbs. and tow a 6800 lbs chipper!!! 610331



- TGMRCK25S
by:

The installation was on a 2009 Silverado 2500 HD 4X4 and the product fit perfectly! Installing them was a snap! They really made a difference when towing my 5th wheel RV. 680684



- TGMRCK25S
by:

Simple install and adjustable. 894669



- TGMRCK25S
by: 09/18/2020

Best decision I made for pulling our 5th wheel. Absolutely no sway or rear end squat. Truck pulls trailer like a dream. Sometimes I cant tell its back there. 37 ft Keystone Laredo 12,000lb. 2009 Silverado 2500HD crew cab. 883018



- TGMRCK25S
by:
Ram 2500

Fit my GMC 4X4 2500 HD Perfect, I just installed a 2400 lb. camper on it and they just touch the axle pads. They really help take out the rocking motion from being top heavy. I received great customer service from Emily. 872542



- TGMRCK25S
by:

I recommend it for your truck!! I bought it for my 1/2 ton 2006 silverado 1 year ago. Even tho he had 3 leaf spring and a helper in each side.. when a was towing my 2 axles enclosed trailer it made a significant difference. I have a 3/4 ton now. With 5 leaf spring and a helper. I haven't bought some for this one, but i will be looking into it depending on my need's in the future... 853242



- TGMRCK25S
by:

On my truck these were only activated with about 1000 lbs load and then they prevented the truck from sagging under the extra weight. The ride is a little bit, bouncy as you might expect from a rubber, carrier like this. My 2000 pound, lance slide in camper, handles much better with these added. Less body roll in corners. 851202



- TGMRCK25S
by:

Has been installed for about a year. I like them. Purchased to help truck handle the weight of the camper. I think it is better - a little less sway and firmer. Ride quality when empty does not seem to be affected. Install was fairly straightforward. Price is reasonable and much simpler than airbags. 849719



- TGMRCK25S
by:
GMC

Here is a big tip...put the rear bolt washer and nut together just tight enough to slide the mount onto the bolt assembly. Hold the bracket steady while you install the front bolt, washer, and nut into the drilled hole into the bracket. This will save you time and many words we do not say in front of children. I soaked the old bolts with penetrating oil and waited three hours to get the OE bump stops off. No broken bolts, one of the OE bump stop rubber potions was totally gone. I used the whole assembly on my 2002 4X4 GMC extended CAB SHORT BED with the hidden rear doors and Z71 package and it ended up perfect. I have driven it with and without a load and I wish I had gotten these years ago. 847488



- TGMRCK25S
by:
2004 Chevrolet Silverado

Great product, SO easy to install if there was a hard part i guess it would be getting the old bump stops off. I have an 04 Silverado 2500HD we have a 94 Elkhorn truck camper. These new Timbren springs took all the rock out of the ride. With out the springs suspension sagged 3 inches with the springs it only sags 1.5 inches witch is the gap to the axel from the spring. I used the spacer that was included. Product comes with all new hardware. I can get over how easy the installation was. Stock ride of truck remained the same after installation too. 806423



- TGMRCK25S
by:
2005 Chevrolet Silverado

just got them installed on my truck 796031



- TGMRCK25S
by:

James was great to work with and he answered all my questions. This is a good product and it does what it is supposed to do. 792000



- TGMRCK25S
by:
2012 Ram 2500

I'm towing a 12,000 pound 5th wheel camper with a Chevy 2500 HD which caused the bed to squat considerably putting a lot of weight on the springs. I installed these and the difference was amazing, much less squat and much more stability. Very easy to install as well. 789535



- TGMRCK25S
by:
2007 Chevrolet Silverado

The product is great. It has leveled my 2007 Chevy Silverado 2500 classic, while towing. As expected, the ride is much stiffer during travel without the trailer. The shipping was very fast. Ordered on Wednesday and arrived Friday the same week. Packaging was a diiferent issue. The box was torn upon arrival and hardware was missing(see picture). Used the additional spacer for a inch of extra ride height, since I tow every day. Overall, the product is serving me well. 745294



- TGMRCK25S
by:

Works as expected. 736931



- TGMRCK25S
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. 707673


Comments
Everything is good but when I switched to the 5th wheel, I went to the air system from your web site.
RICHARD J - 09/28/2020

101569

- TGMRCK25S
by:

Removed my old air bags after fighting leaks for 6 months. Installed the solid rubber TGMRCK25S. Truck rides a little stiffer,but the body roll has been almost eliminated. Lot more stable in turns. My truck is a bit overloaded with my camper but is level and not mushy as before. Great product. 671192


Comments
Ive had the TGMRCK25S instled for over a year now and couldnt be happier. I have a 2007 GMC 2500HD with a Artic Fox 990 cab over camper. The body roll is minimal and overall stability ks greatly improved. Great product.
Buz E - 07/17/2020

94249

- TGMRCK25S
by:
2001 Chevrolet Silverado

What a wonderful product, affordable maintainance free towing ride height solution. Great communication from etrailer. Good product , fair price and no drama. Love em. 644196



- TGMRCK25S
by:
2003 Volkswagen CC

I have a 2003 GMC 2500HD Duramax 4x4 CC. I put on super springs when the truck was new. I pull a Alpenlite 5 wheel, with a pin weight over 2300 lbs I wanted to change from super springs to timbrens to loose weight and retain support for suspension. I installed timbrens without the spacer and they rested on the axle pad. The ride wasn’t awful but more harsh then with the super springs. I reinstalled the super springs and this gave me an 1 1/4” space from timbrens and axle. I haven’t pulled the 5 th wheel yet. I think with both on should help with sag. 637928



- TGMRCK25S
by:
Chevrolet Silverado

Fit and functions as described. Installation was simple on my '05 Silverado. 565921



- TGMRCK25S
by:
2009 Chevrolet Silverado

Thank you etrailer or the quality products and prompt response and delivery. 5th wheel hitch setup was easy to install as well as the suspension upgrade.Thank you. 527499



- TGMRCK25S
by:
2006 Chevrolet Silverado

Yes I like them they do a great job and was easily installed directions was easy to follow 524280



- TGMRCK25S
by:
2005 Chevrolet Silverado

Easy to install. Half hour and they support my camper great ! 509711



- TGMRCK25S
by:
2010 GMC Sierra

Will put them in every vehicle I get. Huge difference in stability when towing. Very little ride change when empty. 504993



- TGMRCK25S
by:
2010 GMC Sierra

Will put them in every vehicle I get. Huge difference in stability when towing. Very little ride change when empty. 504992


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Info for this part was:

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