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

Item # TGMRCK25D
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Retail:$265.18
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1992 GMC C/K Series Pickup

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TGMRCK25D - Jounce-Style Springs Timbren Rear Axle Suspension Enhancement
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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 TGMRCK25D, or order online at etrailer.com.
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  • Reviews (2414)
  • Q & A (78)
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Timbren Vehicle Suspension - TGMRCK25D

  • Timbren
  • Jounce-Style Springs
  • Rear Axle Suspension Enhancement
  • Extra Heavy Duty

8,600-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 get a smooth, comfortable ride
    • Allows the leaf spring ample movement and cushions light loads
      • Rides just as smoothly when you're not hauling a load
    • Becomes more rigid as more weight is added
      • Increases stability - gives you great performance when you are hauling heavy loads
      • Reduces vehicle sag
  • Works independently - side to side
    • Helps to compensate for off-center loads
    • Reduces body roll when you have to swerve or execute a sharp turn
  • Acts as shock absorber, 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: 8,600 lbs
    • Do not exceed your vehicle's weight-carrying capacity
  • Designed to work with a suspension system that is in good working order
  • Limited lifetime warranty - satisfaction guaranteed


An example of sag on a truck's rear axle under a heavy load. The Timbren Suspension Enhancement System levels the vehicle.

Whether you're hauling heavy loads in the cargo area or by pulling a trailer, you will often see the rear sag while the front end rises. In these cases, the rear axle is handling not only the weight of the cargo, but more of the truck's weight, as well. 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 has a custom-fit bracket that will be 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, one inch 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 the truck level.


Timbren suspension system works to prevent body roll

Each hollow rubber spring works independently to support the driver's 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 the truck. 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. Wear and tear on the factory suspension is also lessened because the rubber springs work to prevent bottoming out on rough roads.


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.



GMRCK25D - Rear Suspension Enhancement System with Aeon Hollow Rubber Springs by Timbren

Installation Details TGMRCK25D Installation instructions


Customer Reviews

Timbren Rear Suspension Enhancement System - TGMRCK25D

Average Customer Rating:  4.7 out of 5 stars   (2411 Customer Reviews)

8,600-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.

- TGMRCK25D
by:

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

- TGMRCK25D
by:

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



- TGMRCK25D
by:
Ford

this is the second set of Timbren springs I have purchased, the first set was on my Ford Raptor, they took all of the sag and sway out of pulling my boat. I have this set on my 2015 GMC Denali 2500HD, I pull a 42 ft. 5th wheel and the Timbren's take all of the sag and sway out, these are in my opinion the best product I have purchased for my truck. 683687


Comments
this is still an amazing product! works as good today as the day I installed it. I recommend this to all my friends.
John G - 08/12/2020

97151

- TGMRCK25D
by:
2010 Chevrolet Silverado 2500

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



- TGMRCK25D
by:
2015 GMC Sierra 3500

I installed them on my truck yesterday. Very simple to put in. Won't be able to see how well they work until I hook up our 5th wheel next for a trip. 576508



- TGMRCK25D
by:

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



- TGMRCK25D
by:
2015 Chevrolet Silverado

I bought Timbrens to install on my 2015 Silverado 2500HD truck, which I use to haul our 5th wheel. I had a set of airbags on my old GMC and they worked well, however, they were a concern when it came to maintenance. I saw a review and recommendation for Timbrens and thought they were a great alternative to having airbags installed. I read the instructions and can see no problems with installing them myself - thereby not only saving in the cost over the airbags, but also not having to pay anyone to install the Timbrens. Everything I have read about them makes me feel very good. I don't see the truck lowering with the 5th wheel attached, but having the Timbrens installed will take away any worries with rough roads. 613453



- TGMRCK25D
by:

A really good product. Installed easily. Highly recommend you restake them so they are less apt to vibrate off. They easily carry my 2600 lb camper and remove most of the weight from the overload springs. They also assist greatly in preventing side to side swaying and help to keep the camper upright while cornering. 528107



- TGMRCK25D
by:
2013 Chevrolet Silverado

Fast shipping and exactly what I wanted. Works great pulling a camper. Took the wiggle out of rear end on highway when changing lanes. Anyone with a camper should try these. Also helps when an 18 wheeler passes with the pull, to me anyway. Anyone with a camper of any size knows what I mean. 150670



- TGMRCK25D
by:
2013 Chevrolet Silverado

The only reason I gave a 4 star to suspension product is because they are a bit over needed support. I haul a truck camper and it weights around 2800 lbs. when loaded. My suspension only drops a couple inches. The ride is a little stiff, but I feel safe with very little sway. Weight transfer goes forward so steering is the sway. it would seem a shorter product would work better. A inch doesn't much but it might work better. 523348



- TGMRCK25D
by:
2018 Chevrolet Silverado 3500

This rating of 4 stars is because I have not put a load on my truck to test the drive loaded. I have driven it unloaded. The unloaded ride is the same as original. Installation was easy, I looked at the etailer video perfect procedure. It took 30 minutes tops. Fit perfect, easy installation, speedy delivery. 445995


Comments
I did 8,400 miles summer with a 3900 lbs dry weight truck/camper on the truck. The Springs preformed as good as I hoped they would. I definitely would recommend them for this application.
Richard - 10/25/2018

45064

- TGMRCK25D
by:
2012 GMC Sierra

Second time I've ordered from Etrailer. Super happy AGAIN! Install wasn't bad. Went in tight. (Like they should???? ride is awesome. Truck holds strong at 3/4" lower with load. I love it. Package wasn't in sealed and box was busted up. But, rubber. So who cares???? 651388



- TGMRCK25D
by:
Chevrolet

After a 3000 mile trip with a 42' fifth wheel on a 2016 Chevrolet single rear wheel short bed 3500HD, I will say they made a difference. They took some of the bounce and the side to side rocking out of the truck. I would definitely put them on my next truck as well. 667565


Comments
Still good. The right solution is a dually with heavier springs and more stability from 4 tires, but that is not in the budget.
Paul - 07/08/2020

86349

- TGMRCK25D
by:
2011 Chevrolet Silverado

These beauties are GREAT! I have had air bags before which most know the issues with them. These make my truck stay level and even helped with the bouncing of the rear better then air bags. I would recommend them to those who don't want to mess with air bags and they will last longer. Very easy to install. Took me less than 15 minutes to do both sides. 362615


Comments
When I purchased these stops I had in mind that they would help with loads on my 2500HD. I towed a Trailer at 6800lbs. With the stops it help with load droop and ride stability. Now I have a 10,000lbs fifth wheel and the stops have preformed with wonderful results. Im very glad I when this way for load assist. I do recommend this product.
Robert M - 04/04/2018

36852

- TGMRCK25D
by:
Jeep

I had bought these timbrens and the weight safe hitch with the 8” drop from etrailer. I was quite please by both products. Installation of the timbrens was very easy, only took 30-40 minutes to change out bump stops in my garage.I hauled a Uhaul trailer with a Jeep over 300 miles, with no issues. The timbrens worked great, no issues with the rife. And I really like the weight safe hitch. I recommend checking out these two products from etrailer. Thanks etrailer. 642864


Comments
Great no issues, made a couple trips out to California pulling heavy trailers, the hitch and timbrens are working out great.
David G - 05/17/2020

76808

- TGMRCK25D
by:

Truck still sags is better but not good. Had air bags in the past much better. 699884



- TGMRCK25D
by:
2015 Chevrolet Silverado 3500

I just purchased a 2018 Chevrolet 3500 drw to replace my 2015 truck that was identical. I had air bags in my previous truck but decided to give the Timbren rear enhancement system a try. I watched the video about them as well as the install and decided that for the price as well as the ease of installation that I would give them a try. my only reason for using anything on the rear suspension is to eliminate the added "squat" that these trucks are known for. Ordering was simple, I called with a question and spoke to Angela, not only did she cheerfully answer my question, but also offered to place the order for me. I took her up on the offer and after completing the call I had an order confirmation email, and within 30 minutes I had a shipment confirmation email. I have ordered from Etrailer a few times and I must say that they are one of a few companies that I never worry about having a bad experience, they are always on top of their game. I received the product within 5 days using the free shipping. I installed them on Saturday, and to my surprise it was as easy as the video shows, within 20 minutes I had both sides installed and was cleaned up and hooking to the trailer. I was thrilled when I hooked up and checked the level on my trailer to find out that I was sitting exactly at the height that I did with 50#'s of air in the airbags on my other truck. I jump in and take a run around the block, making sure I hit a railroad crossing and I will say I am very pleased. Great job Timbren, Angela and Etrailer !! 499444



- TGMRCK25D
by:

I purchased a used pickup without any jounce bumpers. I ordered these to provide more support rather than going back with stock ones. I pull a 5th wheel and these keep the truck level with less bouncing around and bottoming out when towing. When I'm not towing they sit about an inch or inch and a half about the stops so they do not negatively impact the ride quality. They work as advertised and I'm pleased with them. 653123



- TGMRCK25D
by:
2015 Chevrolet Silverado 2500

Excellent product. Installation took 20 minutes or less and was very simple. 673880



- TGMRCK25D
by:
2013 Chevrolet Silverado

good product, great price 915499



- TGMRCK25D
by:

They fit perfectly, and can't wait to tow with them. 913511



- TGMRCK25D
by:

Awesome investment. Benefits of airbags without the price or the hassle. 912083



- TGMRCK25D
by:

Live this product very easily installed. Ms Tammie sales person really helped me get what I needed. 901983



- TGMRCK25D
by:
2018 Ram 2500

Great product so far. If you can change a flat tire, you can install these. Put these on my 2018 GMC 2500 to pull a fifth wheel. It limits the amount of squat while towing, and greatly enhances stability. Easy solution for not much $. 884536



- TGMRCK25D
by:

Perform exactly as advertised. Very satisfied with there performance as we camp very often, we load the truck with gear and fire wood on occasion Then hook to our camper there great . 876118


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Ask the Experts about this Timbren Vehicle Suspension

  • Difference Between Timbren Jounce Springs for 2019 Chevy Silverado 2500HD
    The biggest difference between the two parts is that the Timbren Rear Suspension Enhancement System # TGMRCK25D is a double-convoluted spring while the Timbren Rear Suspension Enhancement System # TGMRTT35D are single-convoluted springs. The single-convoluted springs are designed for service vehicles like tow trucks because they have less travel - they won't compress as much - than double-convoluted springs, making them more rigid for heavier-duty work. Due to this I highly recommend...
    view full answer...
  • Rear Suspension Helper Springs for a 2018 GMC Sierra 2500 Towing a 5th Wheel Trailer
    Hello, I will be happy to help you select some helper springs to improve the ride and level out the truck when you are towing. Timbren springs are an easy install but they will make the ride stiffer when you are not towing. The similar SumoSprings Solo # SSR-207-47 will also level out the truck but will not be as stiff when not towing compared to the Timbren springs. Another option to consider is Roadmaster Active Suspension # RAS3611-HD. Installation is easy with this kit as...
    view full answer...
  • Comparing Timbren SES Jounce-Style Springs for a 2019 Chevy Silverado 3500
    There are 3 different Timbren jounce-style springs that fit your 2019 Chevy Silverado 3500 and they are all for different applications. Part # TGMFK25D is for your front suspension. Part # TGMRCK25D is for standard duty pickups that do occasional towing. Part # TGMRTT35D is for heavy duty applications like severe service vehicles like tow trucks. All of these are compatible with 2WD or 4WD pickups. I have attached some videos and the installation instructions for you to reference.
    view full answer...
  • Will the Timbrens Provide More Support Than the TorkLift StableLoads On a 2017 Chevy Silverado 3500
    I am not personally a huge fan of the TorkLift StableLoad Suspension Upgrades part # TLA7310 and # TLA7202 as you have come to find out they don't always provide the most support but I am a big fan of the Timbren Rear Suspension Enhancement System part # TGMRCK25D that you referenced. The Timbrens will provide more support than any other option for your 2017 Chevrolet Silverado 3500 so you are most likely not going to sag with these installed which I might add is super easy just like the...
    view full answer...
  • Comparing Timbren TGMRCK25D Or TGMRTT35D Rear Axle Jounce Springs For 2019 Chevy Silverado 2500
    I recommend the Timbren Rear Suspension Enhancement System part # TGMRCK25D which is designed for pick up trucks like the 2019 Chevy Silverado 2500 and has a 8,600 lb capacity. The Timbren Rear Suspension Enhancement System part # TGMRTT35D is designed for severe service vehicles and not pick up trucks.
    view full answer...
  • Comparing Roadmaster RAS, Timbrens, and SumoSprings for a 2019 Chevy Silverado 2500HD
    The best fit and forget systems we have for your 2019 Chevrolet Silverado 2500HD are going to be between the Timbren Rear Suspension Enhancement System part # TGMRCK25D and the SumoSprings Rebel Custom Helper Springs part # SSR-203-47-2. These systems both dampen the load placed on the vehicle and allow the factory suspension to still work accordingly whereas the Roadmaster Active Suspension Custom Leaf Spring Enhancement Kits work by preloading the factory suspension with no dampening...
    view full answer...
  • Can I Use the Timbren GMRCK25D On a 2019 GMC Sierra 2500HD
    Yes. The Timbren SES # TGMRCK25D can be used on trucks that are lifted like your 2019 GMC Sierra 2500. You will want to have approximately 1" between the bottom of the spring and the axle when installed, but if you get them installed and there is more than that you can use the Timbren 1" Spacer For Raised Frame Vehicles - 3/8" Bushing # A25723-90AH00 to close that gap.
    view full answer...
  • Will Timbrens for a 2019 Chevy Silverado 2500 Prevent Porpoising While 5th Wheel Towing
    The Timbren Rear Suspension Enhancement System part # TGMRCK25D which is a fit for a 2019 Chevrolet Silverado 2500 will help to reduce porpoising. The porpoising is caused by the suspension flexing which is a result of the heavy pin weight. The Timbrens will help stiffen the rear suspension which will then help prevent the trailer from rocking back and forth i.e. porpoising.
    view full answer...
  • Comparing Timbrens and Air Bags for a 2014 GMC Sierra 2500
    The two most popular suspension enhancement options for a 2014 GMC Sierra 2500 are the Timbren Springs part # TGMRCK25D and Firestone Air Bags part # F2613. I recommend the air bags as they are adjustable so you can always get the perfect level of comfort and support. The air bags will also get you closer to level when compared to the springs above. The benefit of the Timbrens is that they are easier to install and don't require any adjustments. If you do go with the air bags, you can...
    view full answer...
  • Recommended Timbren Jounce Springs 2020 Chevy Silverado 2500
    To help suspend payload carried in the truck's bed, I'd recommend using # TGMRCK25D, which are rated up to 8600 lbs. Keep in mind, these will NOT increase the manufacturer's stated suspension capacity. For a slide-in camper or salt spreader, using # TGMRTT35D is recommended.
    view full answer...
  • Rear Suspension Enhancement for 2017 Chevy Silverado 3500 Towing Fifth Wheel Trailer
    Yes, a Timbren kit like the part # TGMRCK25D would be exactly what you'd need to beef up the rear suspension of your 2017 Chevrolet 3500HD Duramax when towing a fifth wheel trailer. This is a confirmed fit for your truck and will provide you with additional support when towing. I attached an install video for this kit for you to check out as well. I like the Timbrens because they don't require you to monitor air pressure like the air bag kits do and the install in much simpler.
    view full answer...
  • Which Timbren Suspension Enhancement Product for 2019 Chevy Silverado 2500
    I'd be happy to help you with that. The Timbren # TGMRTT35D kit has an 8000 lb capacity, and is designed for super heavy duty applications like ambulances or tow trucks. For a regular pickup up truck, you'd want to go with the # TGMRTT35D.
    view full answer...
  • Comparing Timbren Rear Helper Springs for a 2017 Chevy Silverado 2500
    Timbren springs # TGMRTT35D have an 8,000 pound capacity and are designed for sever service vehicles such as tow trucks. The springs are also a different design. Timbren springs # TGMRCK25D are rated for 8,600 pounds but are for regular pickup models of the 2017 Chevy Silverado 2500HD.
    view full answer...
  • What is the Height and Diameter of Timbren Helper Springs for a 2015 Chevy Silverado 2500
    I went out to the warehouse and pulled Timbren springs # TGMRCK25D for the 2015 Chevy Silverado. The overall height of the springs is 6-1/4 inches. Part of the tops of the springs will be recessed in the factory bump stop mount so as little as 5-1/4 inches of the spring would be sticking out. The diameter is just a hair less than 4-1/4 inches.
    view full answer...
  • Comparing Timbrens and SumoSprings for a 2017 Chevy Silverado 3500
    Yes, the Timbren Rear Suspension Enhancement System part # TGMRCK25D and the SumoSprings Solo Custom Helper Springs part # SSR-207-47 are confirmed to fit your 2017 Chevy Silverado 3500. Both products will help to reduce sag, improve stability, and increase the existing suspensions wear life. Generally speaking, Timbrens are going to give you more support but SumoSprings will have a smoother ride. Of these two options, I recommend using the Timbrens as these will be more inline with...
    view full answer...
  • Timbren Weight Ratings Explained, Recommendation for 2015 GMC Sierra 3500
    The weight rating for Timbrens like the part # TGMRCK25D that you referenced is the amount of additional suspension support they will provide the vehicle they are installed on. You should note that Timbrens do not actually increase the towing capacity of the vehicle they are installed on. They will provide additional support so that the vehicle can carry it's current capacity in a safer, more level way. I attached a help article on Timbrens for you to check out as well. These...
    view full answer...
  • Rear Helper Springs for a 2017 Chevy Silverado 2500 Towing 5th Wheel and Gooseneck Trailers
    Timbren springs # TGMRCK25D have a Limited lifetime warranty and satisfaction is guaranteed. Take a look at the very last line on page 2 of the instructions I have linked for you. Considering your application I would not recommend Timbren springs as the best option. Times when you are not towing will not compress the springs and you will have a stiffer ride. Air bags such as # F2702 are a better option for towing 5th wheel and gooseneck trailers since you can adjust them by adding or...
    view full answer...
  • Comparing Timbren Rear Helper Springs for a 2019 Chevy Silverado 2500
    The Timbren Springs part # TGMRTT35D for the 2019 Chevy Silverado 2500 have a 8,000 lb capacity are designed for service vehicles such as tow trucks. The Timbren Springs part # TGMRCK25D have a 8,600 lb capacity but as designed for heavy duty pickup trucks. The springs for the service vehicles come with a spacer to take up extra space while installing the springs.
    view full answer...
  • Dimensions for the Springs in the Timbren Suspension Enhancement Kits for a 2013 Chevy 3500HD Diesel
    Once installed, the double convoluted springs from the Timbren SES Kit, # TGMRCK25D, will sit 5-3/16 inches below the jounce bumper holder on the frame. The outer diameter of these springs is 4-5/16 inches. The single convoluted springs from the Timbren SES Kit, # TGMRTT35D, are only 3-9/16 inches tall, but this kit also includes a 1 inch spacer, so it will sit 4-9/16 inches below the jounce bumper holder on the frame (see photos). The outer diameter of these springs is 4-1/4 inches.
    view full answer...
  • Recommended Timbren Suspension Enhancement For Slide In Camper On 2016 Chevrolet 3500 4WD
    I definitely recommend the Timbren springs over the Stableloads. I reached out to my contact at Timbren about the differences between the rear suspension models for your 2016 Chevrolet 3500 4WD and he said that the Timbren Rear Suspension Enhancement System # TGMRTT35D are definitely what you want for your Lance 950s application. He said that these rear springs are made specifically for slide in campers. They are designed to have more coverage than the # TGMRCK25D, and even though they...
    view full answer...
  • Can Spacers be Added to Timbren Helper Springs for a Lifted 2012 Chevy Silverado
    Timbren does have spacers, # A25723-90AH00, that you could use. You would need a total of 4 of them since each is 1 inch tall and because you have a 2 inch lift. I have included a couple of video links for you. One is an installation of kit # TGMRCK25D. The other is an installation that uses the spacers.
    view full answer...
  • Comparing Timbren Rear Helper Jounce-Style Springs for a 2019 Chevy Silverado 2500
    The difference between the Timbren Jounce Springs # TGMRCK25D and # TGMRTT35D for your 2019 Chevy Silverado 2500 is that the former is for standard pickup truck use while the latter is for Severe Service vehicles only. Since it doesn't sound like you have a Severe Service vehicle you need to use part # TGMRCK25D. They do have different weight ratings too but that doesn't change what they are supposed to be used for. The standard duty has a weight rating of 8,600 lbs while the Severe...
    view full answer...
  • Rear Suspension Enhancement Helper Springs for a 2016 Chevy Silverado 2500 Towing 5th Wheel Trailer
    Timbren Rear Suspension Enhancement System # TGMRCK25D will prevent bottoming out but it stiffens up the suspension so some of those bumps may be more jarring than before. And the unloaded/not towing ride will feel stiffer as well. Ideally to soften things up a little you would go with air springs such as # F2702. This will allow you to adjust how stiff or soft the ride is. This model air spring is compatible with 5th wheel hitch frame brackets as well. I have linked a video showing...
    view full answer...
  • How to Remove the Rear Bump Stops on a 2012 Chevrolet Silverado 3500
    When we removed the rear bump stops on a 2016 Chevy Silverado 2500 to install a set of the Timbren Rear Suspension Enhancement System part # TGMRCK25D, we found that by using a screwdriver and placing the end between the jounce spring and mounting cup we were able to pry the spring down and outward as shown in the attached video. Unfortunately, we have not removed the bump stops on your exact truck (2012 Chevrolet Silverado 3500) but the 2016 Chevy Silverado 2500 we did remove them on...
    view full answer...
  • Timbren or SumoSprings Recommendation for a 2015 Chevy Silverado 2500
    Because the Timbrens like part # TGMRCK25D that you referenced have a reputation as having kind of a harsh unloaded ride quality I would recommend the SumoSprings part # SSR-207-47 since you will get the same support without as harsh of a ride when the vehicle is unloaded. I attached an FAQ on Timbrens for you to check out as well.
    view full answer...
  • What is Overall Height of Timbren SES Kit # TGMRCK25D
    Overall height is 5-3/16 inches. That means that once installed, the double convoluted springs from the Timbren SES Kit, # TGMRCK25D, will sit 5-3/16 inches below the jounce bumper holder on the frame. The outer diameter of these springs is 4-5/16 inches.
    view full answer...
  • Suspension Enhancement Recommendation for 2016 GMC Sierra 3500 for Smoother Ride Unloaded
    We have found that the Timbren setups affect the unloaded ride quality of a vehicle more than the other suspension enhancement solutions. For a similar solution that we have found to be a bit less harsh the Firestone Work-Rite kit part # F8632 would be a great option.
    view full answer...
  • Suspension Enhancement Recommendation for 2018 Chevy Silverado 2500HD with Truck Bed Camper
    For your 2018 Chevy Silverado 2500 the Timbren kit part # TGMRCK25D is a confirmed fit and would work well. For in bed campers most people really like the SuperSprings like the part # SSA13MXKT as this provides additional support but also acts as an anti-sway bar which helps with top heavy truck bed campers.
    view full answer...

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  • Most detailed, accurate vehicle suspension information available.

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  • Trusted since 1946.

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Info for this part was:

Expert Research:
Mike L
Expert Research:
Michael H
Expert Research:
Jameson C
Expert Research:
John H
Expert Research:
Adam R
Expert Research:
Rachael H
Expert Research:
Jeffrey L
Video by:
Andrew K
Video by:
Joshua S
Video by:
Jonathan Y
Written by:
Tyler C
Installed by:
Jeff D
Installed by:
Robert C
Video Edited:
Jacob T
Video Edited:
Dustin K
Video Edited:
Chris R
Test Fit:
Randy B
Test Fit:
Brent H
Test Fit:
David F
Updated by:
Mary E

At etrailer.com we provide the best information available about the products we sell. We take the quality of our information seriously so that you can get the right part the first time. Let us know if anything is missing or if you have any questions.