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  1. Vehicle Suspension
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  3. Silverado 2500
  4. 2015
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FITS 2015 Chevrolet Silverado 2500
Timbren Suspension Enhancement System - Severe Service - Rear Axle
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Timbren Suspension Enhancement System - Severe Service - Rear Axle

Item # TGMRTT35D
Retail:$468.32
Our Price: $398.07
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Vehicle Suspension
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2015 Chevrolet Silverado 2500

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4 Wheel Drive

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The best technical support and full vehicle suspension installation instructions. Great price Silverado 2500 vehicle suspension and expert service. Chevrolet Silverado 2500, 2015 vehicle suspension by Timbren are available from etrailer.com. For expert service call 1-800-940-8924 to order your Timbren Suspension Enhancement System - Severe Service - Rear Axle part number TGMRTT35D, or order online at etrailer.com.
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2015 Chevrolet Silverado 2500 - Timbren Suspension Enhancement System - Severe Service - Rear Axle

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

8,000-lb Capacity hollow rubber springs sit above the rear axle to help stabilize and level your Chevrolet Silverado 2500. Provides a comfortable ride by absorbing road shock and improving stability. Ideal for trucks with slide-in campers or an in-bed salt spreader.


Features:

  • Improves suspension, handling, and safety
    • Ideal for trucks with slide-in campers or an in-bed salt spreader
  • Provides additional support as needed, so you always get a smooth, comfortable ride
    • Allows the leaf spring ample movement and cushions light loads
    • Becomes more rigid as more weight is added
      • Increases stability - gives you great performance when you are hauling heavy loads
      • Reduces rear 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 suspension
  • Includes 2 Aeon hollow rubber springs, custom-fit brackets and hardware for simple installation
    • Replaces axle bump stops on frame
    • No drilling required


Specs:

  • Capacity: 8,000 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 vehicle's rear axle under a heavy load

Whether you're hauling heavy loads in your bed or cargo area or you're towing a trailer, you will often see the rear of your vehicle sag while the front end rises. In these cases, the rear axle is handling not only the weight of the cargo, but also more of the vehicle's weight. Because less weight is on the front axle, the front tires are making less contact with the road. Overall handling - traction, steering, and braking - is negatively affected. But the resistance from Timbren's Suspension Enhancement System works with your factory suspension to keep your vehicle level and improve your driving experience.


Diagram of the Timbren spring installed

The Timbren system comes with custom-fit brackets that are bolted onto each frame rail above the rear axle. Hollow rubber springs are bolted to the bottom of the bracket and hang down to where the bottom of the spring sits, 1" above the axle. The inch of clearance allows the existing factory suspension to operate normally under light loads and standard terrain, ensuring the smooth, comfortable ride that you are used to.


Animation of a standard Timbren rubber spring

Timbren Suspension Enhancement Systems are designed to work progressively. When the hollow rubber springs are compressed, the convoluted design causes them to quickly collapse along the folds. Once the folds are compacted, the stacked barrel shape increases resistance, stiffening the suspension and keeping your vehicle level.


Timbren suspension system works to prevent body roll

Each hollow rubber spring works independently to support the driver's side or passenger's side of your vehicle. This is helpful when you swerve or make sharp turns. Each spring is activated when it is needed, so body roll is greatly reduced. The independent action also works well when you are hauling off-center loads.


An example of a trailers swaying

Because the vehicle handles better with the springs, less turbulence will be passed along to the trailer, and this helps to keep the trailer in line. Your driving comfort is further enhanced if the trailer does begin to sway (from a gust of wind or a passing semi), because the movement from the trailer is not transferred to your vehicle. This also works to make the sway subside more quickly.


An empty truck on a bumpy road without Timbren

Another great feature of the rubber construction is that the springs absorb most of the road shock, creating a smoother, more stable ride overall. 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.



GMRTT35D Timbren SES with Aeon Hollow Rubber Springs - Rear Axle - Severe Service

Installation Details TGMRTT35D Installation instructions

Customer Satisfaction Score:


Customer Reviews

Timbren Suspension Enhancement System - Severe Service - Rear Axle - TGMRTT35D

Average Customer Rating:  4.7 out of 5 stars   (6013 Customer Reviews)

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

by:

After a year of ownership and towing my toy hauler many times, I’m happy I went with Timbrens as opposed to air bags. Easy install, maintenance free, and they really do help keep things level.



by:
Ram 3500

Added these bump stops to my GMC Denali 3500 to help improve towing my fifth wheel. They do a great job of preventing the bed from sagging under heavy load. The truck is perfectly level with 3000+ pin weight on the hitch. The truck is extremely stable when the load is sitting on these rather than just on the springs. They do limit travel of the rear suspension (which is exactly what they're designed to do) when not under load. So with no load on, some big dips or bumps that would normally be absorbed by the suspension travel cause the suspension to hit the bump stops instead. It's well worth the tradeoff though for the added payload capacity.



by:

These are a must have for a slide in camper. I am one my third truck and these are my third set.

Edward

2/17/2024

These things are bullet proof! Air bags are for old people who never leave the pavement.



by:

I’ve had Timbrens in the front of my last two trucks for plowing and I have been more than pleased. The truck rides just as well. I decided to get a set for the rear of my 2020 Silverado 2500HD to help with my gooseneck equipment trailer and truck camper. Installation was a breeze, maybe 10 minutes for both sides. I highly recommend them, and I highly recommend etrailer.



by:

They work as described,happy with the purchase & installation was a breeze



by:

after hooking up my 5th wheel camper, We went for test drive, they changed the ride to rock solid and ruined it, I returned to the and removed them, Big mistake on buying them I'm ordering Air Bags like I should have in the first place



by:
2022 GMC Sierra 3500

After 1 year hauling a 16K fifth wheel up and down the east coast, the Timbrens are working great. Smoother ride, no sag. Mechanic installed them in 15 minutes.



by:

Items were exactly what I needed, description was spot on. Super fast delivery.



by:

These are my third set of Timbrens on the third truck in a row. I installed them in about 45 minutes by myself in 105 degree Texas heat.



by:

Waiting to see how they do with my 5th wheel rv. Easiest install I've ever done.



by:
2022 GMC Sierra 2500

Very easy install. Didn’t want airbags. This is perfect for towing my 4 horse gooseneck trailer.



by:

Extremely "easy" to install. Took me almost longer to get my jack, some boards together and soap than it did to install this product. Shipment came quicker than I paid for it to come. Wow! Very pleased with Samantha's customer service!



by:

I've been using these for a month now. I decided to give these a try instead of air bags. So far I've been please, Yesterday I had 2,500 of tongue weight (I have a scale on my hitch, it's super handy btw) on my 2021 2500HD and it handles very well. These didn't allow the truck to sag, so the truck bed was fairly close to level (so a very slight sag). But without these, my front end would've looked like it was way higher then the front. So far, I'm a believer in this product, 10 minute install and your set



by:

arrived fast and was easy to install



by:
2019 Chevrolet Silverado

Easy installation 2019 Silverado Hight Country 3500 4x4 single axel, if you can lift the rear of your truck as we do. The only thing is when the truck is under no load and we drive it the rear suspension will bottom out and kit the suspension enhancement system when we hit a pump on the road. Its sudden and it can be felt by the crew in the truck. Under load they work great.



by:

Works great



by:

Work great. Offer stability, especially in corners. Do not provide for a level truck as the weight of the camper still compresses the springs up to where the Timbrens engage, but I knew that going in. Alternative to full-on air leveling systems.



by:

etrailer never disappoints. Installation was easy, did not have to raise truck axle per directions. A small amount of bearing grease worked better than the recommended soapy water. Cannot comment on effectiveness yet as I am still awaiting delivery of our new truck camper...more to follow.



by:

Got excellent coaching on the proper part for my 2020 GMC 2500 HD. The new horse trailer did not exceed the the weight limits, but squatted the back end more than I wanted. These new bump stops worked perfectly. Install was easy, and the truck rides like normal without load and rides better with load, so its a win win. Thanks for the quick shipping, follow up, and always having great reviews to read when selecting parts to purchase. THANK YOU ALL at "etrailer"...



by:
2015 Ram 3500

Arrived fast and installed in about an 30 minutes.

Removed the old bump stops with couple screwdrivers.

For the new install, don't waste your time with soapy water (I tried it)...just use liquid soap without the water...worked way better. Coat the entire top and 1/4 inch down the side to the first indent.

I used a flat 15 inch pry bar to help push them in. I then jacked the truck up and put a piece of wood between the stop and the axle and lowered it. Helped seat them fully.

Installed on a 2021 Chevy 3500 4x4 dually.



by:
2021 GMC Sierra 3500

I have purchased a lot of things from etrailer and they never disappoint. The products are always as they say they are and the shipping is above average; meaning most of the time is before the quoted time of delivery. The Timbrens went right on no problems. Thank you etrailer!



by:
2014 ChevroletSilverado 2500

Etrailer provided me excellent service. One of my Timbren bump stops was lost due to my fault. I needed another set very quickly. They made sure they were shipped promptly and followed through to make sure that I had them in time. Excellent customer service, and unlike amazon I was able to speak to real people who cared.



by:

The product was easy to install and has been great I would buy them again I would definitely recommend them



by:

Great product! Sold on it after hitching up the first time. Mrs Hally took care of my order and got it to me the next day. Was a great experience with the etrailer & timbren products. Will order from again. Thanks.



by:

Super Easy to install. Really helps with stability on the road when I have my truck camper on. Would definitely recommend!


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See what our Experts say about this Timbren Vehicle Suspension

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    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...
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  • Difference Between Timbren Jounce Springs for 2021 Chevrolet Silverado 2500
    The differences between the Timbren Jounce Springs for your 2021 Chevy Silverado 2500 are listed below: 8,000 lb. capacity Front- Timbren Front Suspension Enhancement System # TGMFK25D (standard duty) Rear- Timbren Rear Suspension Enhancement System # TGMRTT35D (This 8,000 lb. rear set is a Severe Service kit and should only be used on vehicles with a slide-in camper, salt spreader, or those with a mounted crane or other aerial device, such as on a tow truck.) If that is not what you...
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  • Will The Timbren Suspension Enhancement # TGMRTT35D Fit On a 2023 GMC Sierra 3500HD Dually?
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    The entire Timbren kit is different between the two trucks that you have so you would not be able to fit swap any portion of what you have to the new truck. You'd need a new kit like the part # TGMRTT35D.
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  • Recommended Suspension Enhancement System for 2016 GMC Sierra 3500 Denali Dually
    The TorkLift StableLoad Suspension Upgrade for Upper Overload Springs, # TLA7202 are the fit for your 2016 GMC Sierra 3500. They will assist in reducing side to side sway as well as porpoising, and they will reduce body roll. They will reduce the squat of your truck. For another option to consider, I recommend the Timbren Rear Suspension Enhancement System # TGMRTT35D. These springs will work in a similar way but will use your jounce stops bolt location to provide the added strength...
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  • Comparing Timbren TGMRCK25D or TGMRTT35D Rear Axle Jounce Springs for 2015 Silverado 2500
    Timbren rear-axle jounce spring kit # TGMRTT35D is intended for severe service vehicles such as tow trucks so for your towing/cargo application you will use kit # TGMRCK25D. This no-drill install is suitable for heavy-duty trucks like your 2500 whether or not it has factory top overload springs. Installation instructions and a video are linked for your reference.
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  • Timbren System Recommendation for a 2012 Chevrolet Silverado 3500 Cab and Chassis 4x4 Stake Body
    The Timbren system that will fit your 2012 Chevrolet Silverado 3500 cab and chassis 4x4 with a stake body is part # TGMRTT35D. I spoke with my contact at Timbren to confirm that these springs will work with your truck. These springs were designed for severe duty trucks such as yours and have been tested for up to 8,000 lbs, but keep in mind, these will not increase the weight-carrying capacity of your truck. You should not load your truck over Chevrolets recommended weight limits. I...
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  • 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.
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  • 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.
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  • How Does Lift Kit Spacer for Timbrens Fit into Kit that Fits 2019 Chevy Silverado 2500
    I attached a picture that shows how the Timbren # TGMRTT35D that you referenced gets assembled. The spacer # TA25722-90P00 you referenced would go between the numbers 2 and 3 and you'd be set. See attached picture. You will need to provide a longer bolt though so that it can all fit together. The same portion of the Timbren fits into the bump stop cup on your 2019 Chevy Silverado 2500HD.
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    Image 1 for
  • 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.
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    When it comes to switching your Curt Trailer Hitch # C13206 and # C13410 on your 2019 Subaru Outback Wagon to a 2022 Subaru Outback Wagon neither hitch will work. The Curt Trailer Hitch Receiver - Custom Fit - Class III - 2 inch # C67JR is confirmed to fit the 2022 Subaru Outback Wagon. It has a different mounting style then the Curt hitches for the 2019 Subaru Outback Wagons. The hitch has a concealed cross tube, has a bolt-on installation with no welding required and has a gloss black...
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  • Recommended Rear Suspension Enhancement For a 2018 Chevy Silverado 2500HD Towing 5TH Wheel Trailer
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  • Timbren Suspension Kit for a 2024 GMC Sierra 3500 with 2" Block in Rear
    Thanks for reaching out, Chris! I couldn't find that part either but I bet they are referring to the Timbren Suspension Enhancement System # TGMRTT35D along with a spacer kit to take up that extra spacing. If your vehicle frame is the same height as it was before the lift then you don't need a spacer, but if that 2" lift increased your frame height then you'll need to use the 1" Spacer # TA25723-90AD00 (1 for each side) and get some longer mounting bolts from your local hardware store.
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  • Compatability Between Timbren Suspension Enhancement # T68MR And Timbren Spacer # TGMRTT35D
    Yes, The Timbren Spacer # T68MR will work with The Timbren Suspension Enhancement # TGMRTT35D on your 2016 GMC Sierra 2500 per the manufacturer. The kit already comes with (2) one inch spacers in the package. You can use up to 1 inch more on the Timbren system if you use more then one inch the kit could bend. I attached a review video link below.
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  • Which Suspension Enhancement Setup Should I Go With For My 2015 Silverado 3500 Cab Chassis
    I do have a possible solution for you, however, I confirmed with our vendors and there is not currently an air suspension setup that is confirmed to fit your 2021 GMC Sierra 3500 Cab Chassis model. I recommend looking into jounce-style springs, which are likely an excellent option for you. Compared to air bags, jounce springs work in a similar manner by supporting the weight in the back of the truck but actually require no maintenance, whereas airbags require constant maintenance and attention...
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  • Best Suspension Help for 2013 Chevy Silverado 3500 w/ B&W Turnover Hitch and Heavy Gooseneck Trailer
    Because you are constantly towing a heavy gooseneck trailer, I recommend the Timbren Rear Suspension Enhancement System # TGMRTT35D. These springs are extremely well made, require zero maintenance and are easy to install. They have an 8,000 lb capacity to help level your load and provide you with additional support for a smooth ride. You won't have any interference with your B&W hitch as these install where your factory bump stops are and will mount between that location and your axle....
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  • Timbren Suspension Enhancement Recommendation for a 2015 Chevy Silverado 2500HD with ReadyLift
    For a heavy duty Timbren confirmed as a fit for your 2015 Chevy Silverado 2500HD we have the part # TGMRTT35D as a confirmed fit. This would be your best option. Now it sounds like your lift is a body lift which does not change the suspension in any way. If so, then the Timbren installs just like normal. If instead you have a suspension lift you would need the spacer kit part # A25723-90AH00. This is a single 1 inch spacer. You would need 4 of these plus longer install hardware that you...
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  • Suspension Enhancement Options for Heavy Tongue Weight Travel Trailer and GMC Sierra 2500
    For the situation you are describing, and considering that you already have a weight distribution system in use, I agree that enhancing your rear suspension is the next step toward creating a safer ride. Yes, the Timbren Rear Suspension Enhancement System is an excellent choice. We have a confirmed fit for your 2014 GMC Sierra 2500 in #TGMRTT35D. These hollow rubber springs sit above the rear axle to help stabilize and level your truck providing a more comfortable ride by absorbing...
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  • Recommended Helper Spring Option for 2019 GMC Sierra 2500 Towing Fifth Wheel
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  • Comparing Air Bags and Timbrens for a 2015 Chevy Silverado 3500 Cab and Chassis
    The biggest benefit air bags like the Air Lift LoadLifter 5000 Ultimate Air Helper Springs part # AL88339 have over jounce springs like the Timbren Rear Suspension Enhancement System part # TGMRTT35D for a 2015 Chevrolet Silverado 3500 Cab and Chassis is that they are adjustable meaning you can adjust the psi inside each air bag for the best mix between support and comfort. If you are looking for a low maintenance, set and forget option then the Timbrens will serve you better but if you...
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  • 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 Service...
    view full answer...


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