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Timbren Suspension Enhancement System - Severe Service - Rear Axle
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Timbren

Timbren Suspension Enhancement System - Severe Service - Rear Axle

$398.07
Retail:$468.32
You Save: $70.25
Vehicle Suspension

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8,000-lb Capacity hollow rubber springs sit above the rear axle to help stabilize and level your vehicle. Provides a comfortable ride by absorbing road shock and improving stability. Ideal for trucks with slide-in campers or an in-bed salt spreader. Great Prices for the best vehicle suspension from Timbren. Timbren Suspension Enhancement System - Severe Service - Rear Axle part number TGMRTT35S 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

8,000-lb Capacity hollow rubber springs sit above the rear axle to help stabilize and level your vehicle. Provides a comfortable ride by absorbing road shock and improving stability. Ideal for trucks with slide-in campers or an in-bed salt spreader.


Features:

  • Improves suspension, handling, and safety
    • Ideal for trucks with slide-in campers or an in-bed salt spreader
  • 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: 8,000 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.



GMRTT35S Timbren SES with Aeon Hollow Rubber Springs - Rear Axle - Severe Service

Item # TGMRTT35S

Installation Details TGMRTT35S Installation instructions

This Product Fits The Following Vehicles




Customer Satisfaction Score:

Ratings & Reviews

4.5

735 reviews
8,000-lb Capacity hollow rubber springs sit above the rear axle to help stabilize and level your vehicle. Provides a comfortable ride by absorbing road shock and improving stability. Ideal for trucks with slide-in campers or an in-bed salt spreader.

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Show More Reviews

See what our Experts say about this Timbren Vehicle Suspension

  • 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...
  • 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...
  • Suspension Enhancement Recommendation for 2003 Chevy Silverado 2500 HD 4WD
    You would get suspension support for your 2003 Chevy Silverado 2500HD with a Timbren setup but the ride quality will be pretty harsh so I have a different route I'd recommend first with the RoadActive Suspension System part # RAS3611-CHD for if you have factory overload springs or part # RAS3611-HD for if you do not. This will give you all of the same support as the Timbrens but will improve the ride quality and handling unlike the Timbren which will be pretty harsh. Now if you were to...
    view full answer...
  • Correct Timbren Kit Fit for a 2006 Chevy Silverado 3500
    The only Timbren kit that fits the 1500, 2500, and 3500 models of the 2006 Chevy Silverado pickups is the Kit # TGMRTT35S for severe service vehicles. Aside from that all of the other kits are model specific. For your 3500 you'll need the kit # TUR350 rated for 6,000 lbs or the kit # TGMRCK35S rated for 8,600 lbs. I recommend the 6K version if you tow or haul occasionally, but you'll want the 8.6K version if you're towing or hauling on a regular basis. Attached are some review videos...
    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...
  • Can Spacer of Timbren kit part # TGMRTT35S be Left Off of Truck
    Try taking the spacer out as it's only designed to make the Timbren kit part # TGMRTT35S contact the vehicle sooner. You should feel it smooth out a little bit but the unloaded ride quality of a 1 ton truck is never going to be super smooth.
    view full answer...
  • Comparing the Timbren Springs and RoadActive for 2004 GMC Sierra 2500HD with In-Bed Camper
    The best option we have for your 2004 GMC Sierra 2500HD with truck bed camper is the Timbren Rear Suspension Enhancement System part # TGMRTT35S. This system is specially designed for vehicles with truck bed campers and will do an excellent job of providing you with both support and stability. The RoadActive Suspension Custom Leaf Spring Enhancement Kit part # RAS4611 is not really going to give you enough support and would not be a smart buy for your particular application in my opinion. The...
    view full answer...
  • How to Pick Out a Timbren Suspension Enhancement for a 2009 Chevy Silverado 3500
    We have two Timbren fits for your 2009 Chevy Silverado 3500. We have the part # TGMRCK35S which is rated for 8,600 lbs of suspension support and the part # TGMRTT35S which will provide 12,000 lbs of suspension support. Most likely the lighter duty setup would be the ideal system since the heavier duty version is for severe service vehicles like tow trucks that would be at or near capacity most of the time they are being used. You should note that these systems do not allow you to exceed...
    view full answer...
  • Suspension Enhancement for a 2007 Chevy Silverado Classic Towing a 5th Wheel Trailer
    The pin weight of a 5th wheel trailer is typically going to be much less than the 12,000 pounds springs # TGMRTT35S are rated for. So there is really no need for such a high capacity spring set. I recommend Timbren springs # TGMRCK15S rated for 3,600 pounds. This set should not interfere with the 5th wheel install kit because they mount to the bottom of the frame. I have linked a video showing a typical installation and a link to the instructions for you. If you want a little more capacity...
    view full answer...
  • Timbren Recommendation for 2008 Chevy Silverado 3500HD Towing Heavy Fifth Wheel
    The Timbren system I would recommend recommend would be the part # TGMRCK35S. It's the lighter duty of the two kits but the heavier duty part # TGMFK25S but it's going to provide a very stiff ride. The # TGMRTT35S still provides the 8,600 lbs of support which will work great. The HD is really needed only in very extreme situations like tow trucks.
    view full answer...
  • Timbren Rear Suspension Enhancement System for a 2003 Chevrolet 2500 HD Silverado
    The correct kit for your 2003 Silverado, 2500 HD with long Bed, is the Timbren Rear Suspension Enhancement System, # TGMRCK25S, which is the correct kit for 2 and 4 wheel drive models. We have a video installation that should be helpful and installation instructions for you to look over, see links. The kit you referred to is designed for 2500 Service vehicles only. Another option for your vehicle is the SumoSprings Custom Helper Springs Kit, # SSR-201, which is a good option if your truck...
    view full answer...
  • Are The Mounting Brackets For Timbren Bump Stops Available Separately For a 2007 Silverado Classic?
    With the Timbren SES bump stops having a lifetime warranty we only carry the kits like the Severe Service # TGMRTT35S. As this kit does require the mounting brackets to align correctly with the axle pad you will need to get an entire kit.
    view full answer...
  • Suspension Enhancement for a 2005 Chevy Silverado 2500HD Diesel and Different Trailer Types
    To start, adding a suspension lift on your 2005 Chevy Silverado 2500HD is going to require either a custom suspension enhancement kit or spacers because using a regular suspension enhancement kit on a suspension lifted vehicle would mean the helper springs would not engage when they are supposed to. Adding a lift can also make the towing capacity unknown (most likely lowers it) so I would not recommend it. Considering that you tow different loads the best option would be to go with air...
    view full answer...
  • Recommended Suspension and Sway Support for 2005 GMC Sierra 3500 with In-Bed Camper
    The Timbren Rear Suspension Enhancement System part # TGMRTT35S is a great option for a 2005 GMC Sierra 3500 with truck bed camper. They are actually designed for constant loads like this so they will provide excellent support. They are also maintenance free. That said, you could still experience issues with sway so adding the Roadmaster Rear Anti-Sway Bar part # RM-1109-167 would pair nicely.
    view full answer...
  • Helper Spring Option for 2007 Chevy Silverado Classic 3500 DRW Towing Heavy Camper
    Timbren does offer a fit for your truck, part # TGMRTT35S but I'd recommend going with the SumoSprings # SSR-201-47-2 instead. The Timbren model is more designed for severe service vehicles like tow trucks, and wouldn't give you the ride quality you're looking for. The SumoSprings would offer 4600 lbs of additional support without ruining your ride quality. The kit is compatible with DRW vehicles. The springs sit inboard of the leaf spring packs, so they won't interfere with your existing...
    view full answer...
  • Recommended Rear Suspension Enhancement For 2000 GMC 2500 4x4
    If your 2000 GMC 2500 4x4 is a heavy duty C/K Series, the Timbren Rear Suspension Enhancement System # TGMRCK35MA is the confirmed fit. This system is rated for a 10,000 lb capacity. If your 2000 GMC 2500 4x4 is a light duty Sierra, then the Timbren Rear Suspension Enhancement System # TGMRCK25S with a capacity rating of 6,000 lbs is the correct part. The # TGMRTT35S is not a fit for your model year vehicle.
    view full answer...
  • Can Spacers Be Added To Timbrens for 2009 Chevy Silverado 2500 With Truck Bed Camper
    The correct Timbren Rear Suspension Enhancement System for a 2009 Chevrolet Silverado 2500 when using an in-bed camper is part # TGMRTT35S. This kit is designed to have around 1/2"-1" between the spring and contact point but if you like you can close the distance with the Timbren Spacer For Raised Frame Vehicles part # A25723-90AH00 or part # TA25722-90P00. Please note, you may need to get a longer bolt from a hardware store as well.
    view full answer...

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Info for this part was:

Employee Mike L
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Employee Jeff D
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Employee Robert C
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Employee Adele M
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