Timbren Rear Suspension Enhancement System

Timbren Rear Suspension Enhancement System

Item # TGMRCK25S

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Timbren Rear Suspension Enhancement System Jounce-Style Springs TGMRCK25S
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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.
  • All Info
  • Reviews (1896)
  • Q & A (57)
  • Videos (5)
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  • Why etrailer?

Timbren Vehicle Suspension - TGMRCK25S

  • Timbren
  • Jounce-Style Springs
  • Standard Duty
  • Rear Axle Suspension Enhancement

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





This Product Fits The Following Vehicles

1999 - 2000 GMC Sierra 1500

1999 - 2000 Chevrolet Silverado 1500

2001 - 2006 GMC Sierra 1500 HD

2007 - 2007 GMC Sierra Classic 1500 HD

2001 - 2006 Chevrolet Silverado 1500 HD

2007 - 2007 Chevrolet Silverado Classic 1500 HD

2001 - 2006 GMC Sierra 1500 LD

2007 - 2007 GMC Sierra Classic 1500 LD

2001 - 2006 Chevrolet Silverado 1500 LD

2007 - 2007 Chevrolet Silverado Classic 1500 LD

2008 - 2010 GMC Sierra 2500

2007 - 2007 GMC Sierra New Body 2500

2008 - 2010 Chevrolet Silverado 2500

2007 - 2007 Chevrolet Silverado New Body 2500

2001 - 2006 GMC Sierra 2500 HD

2007 - 2007 GMC Sierra Classic 2500 HD

2001 - 2006 Chevrolet Silverado 2500 HD

2007 - 2007 Chevrolet Silverado Classic 2500 HD

1999 - 2004 GMC Sierra 2500 LD

1999 - 2004 Chevrolet Silverado 2500 LD




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 - TGMRCK25S

Average Customer Rating:  4.7 out of 5 stars   (1896 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:
Ram 4500

I run a salt spreader in the winter on a 3/4 ton truck. It weighs around 4500 pounds full. I wouldnt dare fill the salt hopper all the way up without these. 467638



- 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:
Nissan Leaf

I carry a few more tools in the back of my truck than the average person does. My main leaf springs, just touch the overload springs in my day-to-day activity. I wanted to lift the truck up just enough to reposition my springs into the unloaded position. Then when I hooked up our 9,000 lbs. travel trailer the springs would be in a better position to handle the additional load. The Timbren enhancement system worked just the way I had hoped. I would recommend these to anyone who might want to do the same thing that I did. 250764


Comments

After one year of pulling our TT the Timbren springs are working just like the day they were installed. I cant see any compression of the springs after 15,000 miles of towing. I would recommend these springs to my friends.

Joe - 05/18/2017

23979

- 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:
2003 Chevrolet Silverado 2500

I installed this on my 03 GMC 2500 Duramax ex cab Long bed. The reason for the installation was, when pulling my 35 foot Hitchhiker 5th at night my headlights at low beam were too high and causing problems for oncoming traffic,. This was caused by deflection in the rear springs. The installation corrected the problem. I carry tools and other equipment in a 29x56 inch in bed tool box that is mounted in the front of the bed, the box loaded weight I would estimate 135lbs. There is also a 20k Reese hitch which is mounted in the bed and I would estimate the weight with the mounting rails as around 100lbs, with there combined weight empty ride is like axle is a solid hookup to the frame via the rubber bumpers. 407596



- TGMRCK25S
by:
2006 Chevrolet Silverado 2500

Great product with poor instructions. If you have a 1500 crew cab chevy with a short bed. you will get the tgmrck25s wich also works for the 2500. It comes with two big rubber spacers, and 2 extra bolts. for the 1500 crew cab DO NOT use the rubber spacers, and use the short bolts. This will give you the correct clearance. Hopefully this is helpful so you do not have to take it back apart and do it over. Instructions are a little on the minimal side, but the product is awesome. 91760



- 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



- 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



- 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
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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
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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
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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



- TGMRCK25S
by:
2007 Chevrolet Silverado Classic

Highly recommended if your going to do any towing, took the squat out of my truck when pulling my 5th wheel 502081



- TGMRCK25S
by:

Installed these and felt an instant improvement in the ride with our fifth wheel on the back. Pretty straight forward installations with no drilling. 468036



- TGMRCK25S
by:
2016 Chevrolet Silverado 2500

I installed a set of these on my 2016 R 2500 to control body roll when hauling my slidein camper. It completly eliminated the body roll when loaded and improved ride when empty. It is very easy to install and works better than described. Both sets arrived within 2 days of order. Another benefit over airbag system is if your truck is on rack for repair the timbren will not be damaged when truck is raised on lift. 463201


Comments

I am completly satisfied with the timbren suspension aid. It stopped the body roll on my truck wirh my slidein camper on. Thanks for selling a quality product.

Don - 12/28/2018

48029

- TGMRCK25S
by:
2007 Chevrolet Silverado Classic

Very easy to order and even easier to install. Took longer to get out of the box then install. Watched the installation video before I ordered. Does not change the empty ride, but is great with heavy load in truck and even better pulling a trailer. 447682



- TGMRCK25S
by:
2007 GMC Sierra Classic

This product is amazing much better than having airbags and much cheaper and so easy to install would recommend to anyone. 10 out of 10. 447244



- TGMRCK25S
by:
2005 Chevrolet Silverado

Simple solution, passive, no air hoses to leak, and work great! When the truck is loaded, they are not functional, so still the factory ride. When loaded, they contact the axle and provide needed extra load capacity. 426035



- TGMRCK25S
by:
2007 Chevrolet Silverado 2500

I have not put any weight on it yet so that will come later. I have a 2007 G.M.C. 2500 H.D. and I pull a 40 foot Big Horn Traveler. What I want to talk about is the install. It was quick only took about a hour. Take the tire down and start. Had no problems it went just like the video showed. I did not use the big washer I didn't have enough room.I have about 1 inch of travel before they come in to play so ride is the same. 424753



- TGMRCK25S
by:
Chevrolet Silverado 2500

Put them on my Chevy 2500 for more stability when I pull my 35ft fifth wheel camper. They help control any sway and help keep my truck level. Like them alot. 421318



- TGMRCK25S
by:
2004 Chevrolet Silverado

This suspension upgrade is of a high quality both in materials and workmanship. It was easy to install with no modifications needed. It only took me 15 minutes to complete the installation from the time I opened the box. I highly recommend this product and am very satisfied with it. It solved the sag in the rear of my truck and allows me to carry more weight without dragging the rear bumper. 411652



- TGMRCK25S
by:
2003 Chevrolet Silverado

Excellent service, great prices and fast shipping. Even had a return of my own fault. No questions asked, quick return and credit. Highly recommend. 405847



- TGMRCK25S
by:
2006 Chevrolet Silverado

Went on easy. Works great. 397964



- TGMRCK25S
by:
2005 GMC Sierra

With my truck lifted the rear suspension enhancement system does not touch when in loaded. But once I hook up my trailer or load the bed you can feel the difference less body roll/tipping. And now bed stays much higher when hooked to boat and my heavy equipment trailer. These things are great 392661



- TGMRCK25S
by:
2008 Chevrolet Silverado 2500

Purchased these Timbren's for my 08 2500 hd ,shipping was fast even though there was a holiday in the mix . Install was super easy and benefit was immediately obvious . 387107



- TGMRCK25S
by:
2002 Chevrolet Silverado

Excellent product. Just what I needed. Etrailer great company to deal with very informative. Thank you. 378804



- TGMRCK25S
by:
Chevrolet Silverado 2500

The Timbrens gave me about 1/2" lift assistance with a 2200# load in my Chevy 2500 pickup. I recently changed to a 5th wheel with 2500# hitch weight. I was very pleased that the Timbrens where sufficient to keep the truck level and I did not need to install air bags. This is my second set of Timbrens. The first I bought at a local shop and had them install them. I bought the latest set from etrailer, and they were very easy to install, and I saved about 30%. 369379



- TGMRCK25S
by:
2006 Chevrolet Silverado

Just received the product, everything advertised was there with adequate instructions for installation, had them installed in about 1 hour with no issues. I installed them without jacking up the vehicle as recommended. My recommendation would be to either measure the space available between frame and axel to ensure that you have enough space to install the product with the spacer or without it. In my case no spacer was required to allow the recommended space between the product and axel which in my case was just shy of 3/4 inch. Have not tested the product yet under load to see how effective the product will be. 323731



- TGMRCK25S
by:
2002 Chevrolet Silverado

Easy to install and works good with a heavy load in the bed of the truck. 275999



- TGMRCK25S
by:
2002 Chevrolet Silverado

Easy to install and works good with a heavy load in the bed of the truck. 275997



- TGMRCK25S
by:
2009 GMC Sierra

So far so good. install was not a easy as i thought it took me a 1 1/2 but i was laying on garage floor did not drop spare tire.i like the product towed my 5th wheel and worked as it should. 266980



- TGMRCK25S
by:

I'm extremely happy with this product. Had it installed in a half hour. Going to test them out today hauling a 13,050lb toy hauler 5th wheel. Thank you to etrailer for your outstanding customer service and fast shipping. You guys are great!! 219185



- TGMRCK25S
by:

Easy installation. Good quality. 210390



- TGMRCK25S
by:
2003 Chevrolet Silverado

Just installed was very simple. I have a set of front Timbrens that were installed 2 years ago and they great. I expect the rear Timbrens to perform as well as the fronts have. I have ordered from etrailer in the past and I am very satisfied with there service. Thanks Ed 195257



- TGMRCK25S
by:
2006 Chevrolet Silverado

Appears to be as described. Helpful video on the website showed installation process 181812



- TGMRCK25S
by:

Etrailer has made a great impression on me. The customer service was spectacular and the shipping was considerably faster than I anticipated, I received my product within 48 hours. I would, without a doubt, recommend them! I actually had to exchange a product, by no fault of etrailer, the transaction took no time and they quickly credited my account. Great company! 168593



- TGMRCK25S
by:

Have not driven our truck with the rear suspension kit on as it will be completed in the morning. I ordered the front by mistake and Mark at etrailers got me the right kit. Ordered arrived quickly and everything was very expedient. 164105



- TGMRCK25S
by:

this product is great! I put everything on like the instructions said,the ride was a little stiff so I jacked the back of my 3/4 ton back up took the 1 in.rubber disk off.now the ride is perfict.thank you!!!!!!! 159917



- TGMRCK25S
by:

Awesome price and quick shipping. Product works awesome. Loaded up a 21k lb gooseneck trailer with scrap metal and when I got to the scrap yard I had 20k lbs of metal. Overloaded the trailer and my truck. The truck did not squat at all, the reason I accidentally overloaded it. Highly recommend this product! 155409



- TGMRCK25S
by:
2007 GMC Sierra New Body

Simple to install I was done in 15 minutes and performed like I expected. 150635



- TGMRCK25S
by:
2009 Chevrolet Silverado

I put these on my 2500 HD Silverado with a Bull Dog ATV carrier and towed a 6000 lb. camper into the mountains this weekend. With the Timbrens and an equalizer hitch, I never felt a better ride on the highway towing before. These are much better than the air bags and no maintenance. My atv rack ways 300 lbs in the bed of the truck and the ride empty was not rough at all. 146740



- TGMRCK25S
by:

Perfect fit, works great 143188



- TGMRCK25S
by:

I like your product, it works well and it out of sight and easy to install. This the second set I have installed and very pleased. 121193



- TGMRCK25S
by:

Using only hand tools and a hydraulic jack in my drive way, installing this product was as easy as falling out of a tree. The only issue I have with it is that if the truck springs are weak this is not the answer for your problem. This kit will not stop the upward motion in the springs and consequently will give a beating of a ride. 94529



- TGMRCK25S
by:
2000 Chevrolet Silverado

This product is what it says it is. It was easy toinstall and works great for my aplication 81265



- TGMRCK25S
by:
2006 GMC Sierra

Great service and great products. Timbren system easy to install and works great made a difference in how trucks handles with trailer attached more stability and less sway. 68923


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Ask the Experts about this Timbren Vehicle Suspension

Do you have a question about this Vehicle Suspension?


  • Rear Helper Springs for a 2002 GMC Sierra 4x4 1500 LD Extended Cab
  • The ideal way to prevent rear end sag when towing a trailer is to use weight distribution. Helper springs are designed for loads carried in the truck which is why they aren't the best option for this situation. But I will give you both options. First since you are interested in helper springs we can look at those first. The Air Lift springs # AL52203 could work but the trailer, if heavy enough, could still cause squat. A stiffer systems such as Timbren springs # TGMRCK15S (for the 3-door...
    view full answer...

  • 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.
    view full answer...

  • Will the Timbren Rear Suspension Enhancement System Fit a Lowered 2001 Chevy Silverado
  • 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.
    view full answer...

  • Which Timbren Suspension Enhancement Kit Fits 2013 Chevy Silverado 2500HD
  • For your 2013 Chevy Silverado 2500 you actually need a different Timbren part number due to the change in the bump stop that you mentioned. For that you'd need the part # TGMRTT35D instead. I attached a picture that shows how it attaches to the vehicle frame also.
    view full answer...

  • Can Timbren Suspension Enhancement be Used with SuperSprings on a 2007 Chevy Silverado Classic 3500
  • The reason why you are not seeing all of that rear sag being taken care of with the SuperSprings Custom Suspension Stabilizer installed is because the part with the highest weight capacity for your 2007 Chevrolet Silverado 3500 is part # SSA245-2. Since this part has a weight capacity of 4,000 lbs it will not be able to help as much as it would if your camper did not weight over 4,000 lbs. The SuperSprings product that you have on your 3500 will not allow some Timbren Suspension enhancement...
    view full answer...

  • Timbren Suspension System Recommendation for a 2005 Chevy Silverado 1500
  • The Timbren suspension system part # TGMRCK25S that you referenced is the correct system for your 2005 Chevy Silverado 1500. For the 1500 crew cab model you would not need to use the spacer, but you can still measure if you like to be certain.
    view full answer...

  • No Gap Between Timbren Suspension System And Axle On 2008 Chevrolet Silverado 2500HD
  • Per the instructions for the Timbren Suspension System, part # TGMRCK25S, on medium and heavy-duty trucks there will be constant contact and the system will have no gap. It sounds like you have your system installed correctly and have nothing to worry about.
    view full answer...

  • When Are Rubber Spacers Required to Install Timbren Rear Axle Suspension Kit # TGMRCK25S
  • The Timbren Rear Suspension Enhancement System # TGMRCK25S is a correct fit for your 2005 Chevrolet Silverado 2500 whether it is a 2WD or a 4WD version. This kit will install without need for the included 7/8-inch thick spacers UNLESS the truck has a suspension lift kit installed already. In this case you'd need to add spacers to make up for that difference in height between the axle and frame. If the truck is standard and has no suspension lift then the spacers will not be needed.
    view full answer...

  • Comparing Timbren Kits GMRCK25S & GMRCK15S for 2003 Silverado 1500 ZR71
  • Timbren kit # TGMRCK25S fits the 4WD version of your Silverado 1500LD while kit # TGMRCK15S fits the 2WD version. These kits provide progressive resistance when under load to help stiffen and support your OEM suspension, especially useful for cargo loads in the bed, but they do not add weight capacity to the vehicle. Rear-end sag from pulling a travel trailer is best handled by a weight distribution/sway control system rather than a set of jounce springs. A properly-tuned WD/SC system...
    view full answer...

  • Timbren Suspension Enhancement for Slide-In Camper Carried by 2003 Chevy Silverado 2500HD
  • According to my Timbren representative, the capacity of the # TGMRTT35S springs is 8,000 lbs, instead of the 12,000 lb figure we had listed in error. I would recommend the 8K capacity # TGMRTT35S for use with your slide-in camper. According to Timbren's installation instructions, the 8K springs are meant to replace the entire bump stop assembly on the truck, as shown in the installation instructions I've linked to. The # TGMRTT35S includes the necessary hardware and spacers for installation.
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  • Timbren Suspension Enhancement Recommendation for 2008 Chevy Silverado 2500HD
  • Timbrens would be the way to go since you are hauling quite a bit of weight. So for your 2008 Chevy Silverado 2500 you'd want the part # TGMRCK25S which can give you up to an additional 6,000 lb of suspension support. You should note that this kit does not give you the ability to have more payload or towing capacity. Just to better support the current capacity of the vehicle. I attached an install video for this kit for you to check out as well. I recommended this kit over the other...
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  • 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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  • Suspension Enhancement for a 2000 Chevy Silverado 2500 Light Duty
  • The heavy duty suspension packages typically include overload springs. This is an additional spring or springs that will be either on top of or on the bottom of the leaf spring stack on a truck. There could also be other components that are different that can cause the truck to ride higher. Since you do not want to worry about a compressor or adding/removing air I recommend an Air Lift brand jounce style spring kit, # AL52202. These are helper springs that do not take air and they are...
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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...
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  • Timbren Kit Fit Recommendation for 2007 Chevy Silverado Classic 2500HD
  • For your 2007 Chevy Silverado 2500HD Classic the Timbren kit you need is the part # TGMRCK25S. Since you have the factory suspension on the truck this kit will fit and work well. I attached an install video for this kit on a 2007 Chevy Silverado 2500HD very similar to yours.
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  • 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...
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  • Can Timbren Springs # TGMRCK25S Be Used in Place of Weight Distribution on 2005 Chevy Silverado
  • A suspension enhancement system like the Timbren Springs, part # TGMRCK25S, you have referenced, is primarily designed to suspend the weight of anything carried on your 2005 Chevrolet Silverado 2500. Although they would indeed eliminate the sag on the rear of your vehicle, the tongue weight of the travel trailer applied to the rear axle of your Silverado would lower the amount of the vehicle weight applied to the front axle. This is potentially dangerous because shifting too much weight...
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  • Spacer Needed to Install Timbren # TGMRCK25S in 2004 GMC Sierra with 9-1/4 In. from Frame to Axle
  • My technical contact at Timbren advises that based on the information you provided as to the frame-to-axle clearance on your 2004 GMC Sierra (9-1/4 inches) you will need to use their 1-inch spacers, part # A25723-90AH00, along with their Rear Suspension Kit # TGMRCK25S. You will need to order a quantity of 2 spacers.
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  • What Timbren Rear Axle Suspension Kit Fits 2006 Chevrolet Silverado 1500HD 4X4 Extended Cab
  • Since your Silverado is the 4X4 1500HD with extended cab the correct rear axle Timbren kit is part # TGMRCK25S. I confirmed this with my contact at Timbren. The kit you referenced, # TGMRCK15S, is the correct kit for 2-door trucks without the extended cab. These Timbren helper springs install without drilling and will work with or without factory top overload springs. Installation requires permanent removal of the factory bump stops. The video link provided will show you the installation...
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  • Recommended Suspension Enhancement System For 2003 GMC Sierra 4X4 With Quadrasteer
  • 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...
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  • Suspension Enhancement Recommendation for a 2002 Chevy 2500HD Crew Cab 4X4 w/ 8 ft bed
  • The correct Timbren system for your 2002 Chevy Silverado 2500HD 4x4 would be the Timbren Suspension Enhancement System part # TGMRCK25S that you referenced. This will give your rear suspension additional support for when you are towing your fifth wheel trailer.
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  • Suspension Enhancement for a 2003 GMC Sierra 2500 HD Hauling a Trailer and Truck Bed Camper
  • The Timbren Rear Suspension Enhancement System is a great way to assist your trucks suspension when carrying a camper and towing. I use a set of the Timbren springs on my truck when I tow and I would recommend them for anyone towing a trailer or carrying a camper. The Timbren System, # TGMRCK25S, is the correct system for your 2003 GMC Sierra 2500 HD Crew Cab 4X4. The important thing to remember when adding a rear suspension enhancement system is that it will not increase the weight...
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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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  • Can a 2008 Chevy Silverado 2500HD Tow a 16,500 Pound 5th Wheel Trailer
  • The GVWR of a vehicle is set in stone. There is nothing you can do to increase the capacity short of replacing the axle, suspension, and other load bearing and drive train components. What suspension enhancement like # TGMRCK25S does is help support the load and keep the rear end from sagging. Since you have a 3/4 ton truck, you are going to be able to tow just about anything. Consult the vehicle owners manual for the towing capacities of the truck. The gross COMBINED vehicle weight...
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  • Fifth Wheel Hitch Recommendation for 2005 Chevrolet Silverado 1500 LD 6.5 Foot Bed
  • First, I recommend checking your owner's manual for your Silverado's maximum towing capacity. From what I found, Chevy has determined that fifth wheel and gooseneck trailers should not be towed with the 2005 Silverado 1500 Crew Cab. For example, The owner's manual for the Silverado 1500 Crew Cab, 4 wheel drive, 5800 V8, with an axle ratio of 4.10 lists a maximum towing capacity for the vehicle of 8,400 pounds. So as to not damage your truck, I recommend making sure the gross towing weight...
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  • 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...
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  • 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...
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  • Will Timbren Spring, Part # TGMRCK25S, Fit 2009 GMC Sierra with Turnover Ball and 5th Wheel Hitch
  • My contact at Timbren confirmed that their Rear Suspension Enhancement System, part # TGMRCK25S, will work with your 2009 GMC Sierra that is equipped with a BandW turnover ball and 5th wheel hitch. Since this kit installs in the same location as the stock bump stops (which are removed) there will be no clearance issues with your hitches. This kit includes the rubber springs, mounting brackets and required hardware and installs without drilling. Please note that this suspension kit...
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  • Will Timbren Kit Fit 2008 GMC Sierra 2500HD with Body Lift
  • For body lifts like what you have Timbrens work just fine as-is without needing type of adapter or spacer. That means the part # TGMRCK25S will fit your 2008 GMC Sierra and work well.
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  • Recommendation for Sag at Back of 2004 Chevy Silverado 1500 When Towing
  • The first thing I recommend doing is checking out the max towing and payload weights for your 2004 Chevy Silverado. These can be found in the owner's manual and I do not recommend exceeding them as that can cause premature wear to your suspension as well as elsewhere on your truck (like the engine). For your application I recommend adding suspension enhancement. This won't increase the amount of weight that you can carry but it will help to improve your loaded ride quality and take out...
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Info for this part was:

Expert Research:
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Jameson C
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John H
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Video by:
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Installed by:
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