1. Vehicle Suspension
  2. GMC
  3. C/K Series Pickup
  4. 1992
  5. Timbren
FITS 1992 GMC C/K Series Pickup
Timbren Rear Suspension Enhancement System

Timbren Rear Suspension Enhancement System

Item # TGMRCK35
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Vehicle Suspension
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1992 GMC C/K Series Pickup

3500 - Pickup

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Timbren Rear Axle Suspension Enhancement - TGMRCK35
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The best technical support and full vehicle suspension installation instructions. Lowest price C/K Series Pickup vehicle suspension guarantee and expert service. GMC C/K Series Pickup, 1992 vehicle suspension by Timbren are available from etrailer.com. For expert service call 800-298-8924 to order your Timbren Rear Suspension Enhancement System part number TGMRCK35, or order online at etrailer.com.
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  • Reviews (2422)
  • Q & A (3)
  • Videos (1)
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1992 GMC C/K Series Pickup - Timbren Rear Suspension Enhancement System

  • 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 GMC C/K Series Pickup. 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
  • 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.



GMRCK35 - Rear Suspension Enhancement System with Aeon Hollow Rubber Springs by Timbren

Installation Details TGMRCK35 Installation instructions

Video of Timbren Rear Suspension Enhancement System

Videos are provided as a guide only. Refer to manufacturer installation instructions and specs for complete information.




Video Transcript for Timbren Front and Rear Suspension Enhancement Systems Review

Speaker 1: Today we're going to be taking a look at the Timbren line of suspension enhancement systems. Any time that we add weight to our vehicle, it's going to put a lot of strain and stress on the suspension, especially if we're towing a heavy camper, trailer, or we have a heavy load in the back.Tends to have the back end squat down, which again, it's going to put that strain and stress on the rear suspension because not only are we asking it to hold up the weight of the vehicle, but everything else that we add on to it. Which that can arise a lot of different issues. The front end is going to be getting pulled off, which will misalign our headlights, and our tires won't have as much contact, so our steering and braking is going to be diminished.But tat;s where timbrens are going to come into play. They're going to provide us that extra support so that when we do have those heavy loads, the back end doesn't sag down quite as much, and it's not putting so much stress on the back end. By doing that, the front end's not going to rise up, which means our headlights will be in line and our tires will have the correct amount of contact and pressure, so our braking and steering isn't affected.

And they're going to do that all while making our ride more comfortable with that extra load.Our timbrens are going to provide us the support we need by replacing our factory jump stops and mounting in between the frame and the axle. Now, yours may look different, so you want to double check inaudible 00:01:20 fit guide for your specific application.Now, each one of our timbrens is going to feature a steel bracket. They're all going to have black, powder coat finish on them to resist that rust and corrosion or any other kind of chemicals that may be on the road. They're going to have a hollow, rubber ayon 00:01:36 spring that's going to take a lot of that pressure and strain off of the rear suspension.Whenever we do load our vehicle down, the space between our frame and our axle is going to get smaller. That's where our spring is going to make contact with the axle, and it's going to start compressing.

Now, they are progressively rated, so if we have a small load or a light load, it's going to have a little soft engagement. But the further it gets compressed, the harder and stiffer it becomes, giving us the support we need with those heavy loads.And since they are rubber, they're going to have a lot of give to them, which means they're going to give us the support we need. But at the same time, they're going to give us some more cushion and absorb some of the road shock as we drive. And since the rear ones here aren't in constant contact with our aXle, it is going to provide us the same ride quality when it's unloaded.Our timbrens are going to work independently from each other from side to side. That way, if we have an off center load, it will help compensate for that, but at the same time, if we take an evasive maneuver or a really sharp turn, this is going to help reduce that body roll and some of that sway feeling that we get going on when we have a lot of added weight.Our timbrens for the rear are going to be a good enhancement for any time you're going to be adding weight to the back of your vehicle, whether it be a heavy trailer, a large load in the back or any other situation where you're adding a lot of weight to the back of your vehicle.Now, timbrens on the front are going to be a little bit different.

They're going to provide us that load-leveling support and make sure the front end doesn't get pushed down too far. However, these typically are going to be in contact all the time, which means it's going to give us that support and help reduce on that body roll all the time, all while absorbing that road shock, giving us a smoother ride.Now, some situations where you'd want that extra support on the front of the vehicle to keep it from getting pushed down too much would be if you have a snow plow or winch, if you flat-tow your vehicle, or if you have any other heavy accessory on the front. This is going to make sure that front end stays where it should be, and again, making sure our tires, braking and steering acts how they should.When comparing the timbrens to other suspension enhancement options like airbags, these are going to be a lot easier to install because we're not going to have to worry about running lines, maintaining air pressure, putting in switches or compressors or any of that. Once these are installed, these are going to be completely maintenance free. However, airbags are going to provide us with a lot more adjustability, whereas our timbrens are not going to have that.That'll finish up your look at the timbrens suspension enhancement systems..


Customer Reviews

Timbren Rear Suspension Enhancement System - TGMRCK35

Average Customer Rating:  4.7 out of 5 stars   (2421 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.

- TGMRCK35
by:

This was soon easy I will order from e-tralier in the future. 598404



- TGMRCK25D
by:

Review from a similar Aeon Spring System in Vehicle Suspension


These are one of the best products ever! Simple, effective and a reasonable price. They are carefree, invisible when unloaded and very easy to install yourself. I tow a 37ft 12,500lb 5th wheel with my 2018 2500HD. Though my truck already handled the load well, these make the ride more stable and controlled. Lifts the rear up about 1.5 inches as well as keeps things centered from left to right. What's most important when towing is keeping the steer axle on the road. Though I recommend them for any towing configuration; for those of you that push the limits, these are a must have. Brilliant product! Thanks Timbren for the magic bullet! 708124


Comments
Still doing a great job.
JamGear - 10/19/2020

102319

- TFRTT350E
by:

Review from a similar Aeon Spring System in Vehicle Suspension


5 stars. Easy to install and made a big difference when pulling a 9k pound travel trailer. I would recommend it to anyone pulling a trailer. Kept it from sagging and level. 699184


Comments
Awesome and still working
02 F - 09/09/2020

98748

- TDVR05096
by:

Review from a similar Aeon Spring System in Vehicle Suspension


I carry 1400 pounds of tools and supplies in my NV200. These helped carry the load, along with heavier shocks. Very happy! 691745



- TDVRRT
by:

Review from a similar Aeon Spring System in Vehicle Suspension


Installed this on my 2009 Caravan because when I had a hitch mount 4-bike platform rack hanging off the back and was loaded with camping gear and family, the rear suspension was terrible, it would bottom out, and my headlights pointed up so that everyone would flash their brights at me. New shocks helped, but did not solve the problem. This product did fix the problem and I am very happy. I was concerned about the feel when the van us unloaded, but this has not been an issue. I highly recommend this product. 796869



- TDR1500DS
by:

Review from a similar Aeon Spring System in Vehicle Suspension


Great product. 597716



- TDR1500DS
by:

Review from a similar Aeon Spring System in Vehicle Suspension


Doesn't get any easier for an install. A jack, some soapy water and a couple pieces of 2x4. In about 5 minutes you're done. Took out almost all sag when I dropped my travel trailer on the ball. Great addition to the suspension. 488109



- TFRF53A
by:

Review from a similar Aeon Spring System in Vehicle Suspension


Delivery by etrailer was fast. Their advice as to proper application of the Timbrens saved me lots of money! 749745



- TGMRYS4
by:

Review from a similar Aeon Spring System in Vehicle Suspension


So far they look great. I will put on this weekend and see how they work with my travel trailer. 476068



- TDR1500DS
by:

Review from a similar Aeon Spring System in Vehicle Suspension


Not sure these were the best thing for my Ram 1500 pulling a 5th wheel. On some roads get a lot of bucking. Just ordered a set of Air Ride 5000's to try next. Larry T 617920



- TGMRYS4
by:

Review from a similar Aeon Spring System in Vehicle Suspension


Very satisfied with the results,and the customer service.The first set were. incorrect.After calling etrailer,they got the correct one right out to me. 250319



- TFRTT350F
by:

Review from a similar Aeon Spring System in Vehicle Suspension


These arrived as scheduled. The look good, well made. On my way out to install them now. The will get tested later today on the way to the lake. 703241



- TDR1500DS
by:

Review from a similar Aeon Spring System in Vehicle Suspension


Very happy with my timbrens and quick shipping. Added these to a 2013 2500HD 4X4. Quick and simple to install. improved ride quality and takes the squat out when pulling a gooseneck trailer. Very happy and would recommend to anyone wanting to improve quality of ride height. 493335



- TGMRCK25D
by:

Review from a similar Aeon Spring System in Vehicle Suspension


I INSTALLED THE TIMBRENS ON 7-5-12 AS PER PREVIOUS REVIEW. I TRIED THEM TODAY PULLING MY 35 FT. 5TH WHEEL.THESE THINGS ARE WORTH EVERY PENNY,VAST IMPROVMENT. THE TRUCK HANDLES BETTER,SITS BETTER,RIDES BETTER UNDER LOAD. GOOD JOB ,ETRAILER 50638



- TTORTUN4
by:

Review from a similar Aeon Spring System in Vehicle Suspension


I bought these as a replacement for "air bags" which I had two different sets, which failed over 10 years. i would say this product is helpful with pulling a trailer and lighter loads but from time to time I haul heavier loads and this product doesn't offer as much help/support as the air bags. This product is a little cheaper and if they don't weaken over time they will be a help. I have added additional leaf springs to two different pickups but then you end up with a stiffer ride full time. 421383



- TDR1500DQ
by:

Review from a similar Aeon Spring System in Vehicle Suspension


This was ordered because the truck seemed overloaded with just s few items. I haven't installed it yet but will let you know how it works after I do The shipping and packing were excellent and arrived quickly. 420483


Comments
Working great.
Glenn L - 08/15/2018

42324

- TFR250SDF
by:

Review from a similar Aeon Spring System in Vehicle Suspension


Fast shipping 400467



- TTORTUN4
by:

Review from a similar Aeon Spring System in Vehicle Suspension


Installed these on 7/6/2018. Install was pretty strait forward. Sure made a difference on the ride height. It is one of our service vehicles that we have, so we shall see if the driver of it notices the difference. 539447



- TGMFK25S
by:

Review from a similar Aeon Spring System in Vehicle Suspension


I ordered timbrens for the front and rear of my chevy 2500. I have a 2000 lb truck camper and I wanted something to help carry the load a little better. I had no idea that my front bump stops had worn away to almost nothing until I installed these. They have worn well and performed well so far. 628835


Comments
Still working great. No problems. Really happy I didnt waste the money on airbags.
Josh - 04/16/2020

73355

- TGMRCK25D
by:

Review from a similar Aeon Spring System in Vehicle Suspension


thanks for the email back and this was the easiest job I have ever done. 8 minutes and I was done. will send pictures 115200



- TFR1504E
by:

Review from a similar Aeon Spring System in Vehicle Suspension


Rear suspension pads work great. Ride is still like factory with no load unless driving over a big bump at high speed. When towing a 32 foot travel trailer the sag in back end of truck is greatly reduced with a lot more control. Easy to install. The downside is when truck is full with passengers and not towing anything the added weight makes the ride rougher. Shipped on time. 575558



- TFR250SDF
by:

Review from a similar Aeon Spring System in Vehicle Suspension


I have a Timbren rear suspension system on my 1982 Chevy truck that I still own, and after 20 years they still work fine. This latest set installed easily on my 2001 F-250 and they work just as well with and without a load. 440182



- TGMRCK25D
by:

Review from a similar Aeon Spring System in Vehicle Suspension


I bought these for a 2012 GMC 2500 Duramax. The installation for these was much easier than I anticipated (I can't say the same for the front suspension system.) Just lift up your truck, pry out the stock bumper stops, line up the Timbren springs with a 2x4 underneath, and lower the truck. The weight of the bed/frame is enough to get the Timbren spring to seat correctly. This took me less than 10 minutes. Ride quality seems to have improved as big bumps on the road are less rough. These keep the truck from sagging underneath the weight from a trailer, too, though I didn't have much problem with that to begin. Overall, I like this addition. Easy. 48427



- TDR1500DQ
by:

Review from a similar Aeon Spring System in Vehicle Suspension


Have not tested it out yet, but the installation took about 15 minutes by myself, looking forward to trying them out with my 28ft enclosed trailer. You will need a block of wood under them when you let the jack down to seat them in the cups fully there is no way you can snap them in by hand, the video had that great suggestion 199076



- TDR2500D
by:

Review from a similar Aeon Spring System in Vehicle Suspension


Excellent product! Went on in less than 10 minutes with a 15/16" wrench. Leveled the truck out under load and significantly reduced roll. Awesome bang for the buck. And etrailer service was spot on, as usual. 378049


Comments
I still think these are an excellent alternative to bags and very cost effective. My only complaint is that on my 15 Ram 2500 I have to switch out the extra spacers when I’m not towing heavy. The axle and Timbren spacers make contact when unloaded and causes a harsh ride. The good news is that the extra spacers go in and out in minutes I don’t tow heavy very often. With the spacers in I am able to pull a 43’ toy hauler with little roll and excess bounce, an the truck sits fairly level
Ben - 05/08/2018

38290
27
2756
Show More Reviews

Ask the Experts about this Timbren Vehicle Suspension

  • Does Timbren Kit for 1995 GMC K3500 Require Drilling to Install
    The Timbren suspension kit part # TGMRCK35 that you referenced fits your 1995 GMC K3500 without drilling so it would be a great solution for you. It also would not interfere with an aftermarket sway bar either so it would work well in that regard too.
    view full answer...
  • Timbren Suspension Kit Recommendation for 1990 Chevy Silverado 3500
    Timbrens really are a great solution for suspension enhancement as they do not require you to maintain air pressure or run any air lines. The Timbren kit you'd need is the part # TGMRCK35 which is confirmed as a fit for your 1990 Chevy Silverado 3500. This fits versions of your truck that are with and without the overload springs. This will provide an additional 6,000 lbs of suspension support but since a trucks capacity is more than just the suspension strength this does not increase...
    view full answer...
  • Timbren Rear Suspension Enhancement For a 1999 Chevrolet 3500 2WD Dually
    The Timbren Suspension Enhancement Springs, # TGMFK25S, that you referenced will fit your 1999 Chevrolet 3500 2WD dually, but these springs were designed for service vehicles such as tow trucks. Keep in mind, these springs are designed for the front axle, not the rear. It would be better to use Timbren springs on your rear axle when carrying your camper. For your truck, I recommend the Timbren Rear Suspension Enhancement Springs, # TGMRCK35. Adding a set of Timbren springs to your truck...
    view full answer...

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Info for this part was:

Expert Research:
Jameson C
Video Edited:
Jacob T
Updated by:
Mary E
Video by:
Jonathan Y
Installed by:
Robert C

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