1. Vehicle Suspension
  2. Timbren
  3. Jounce-Style Springs
  4. Rear Axle Suspension Enhancement
  5. Extra Heavy Duty
Timbren Rear Suspension Enhancement System

Timbren Rear Suspension Enhancement System

Item # TGMRCK15S
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Retail:$265.18
Our Price: $225.40
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TGMRCK15S - Jounce-Style Springs Timbren Rear Axle Suspension Enhancement
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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. Lowest Prices for the best vehicle suspension from Timbren. Timbren Rear Suspension Enhancement System part number TGMRCK15S can be ordered online at etrailer.com or call 800-298-8924 for expert service.
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Timbren Vehicle Suspension - TGMRCK15S

  • 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 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
  • Includes 2 Aeon hollow rubber springs, vehicle-specific brackets and hardware for simple installation
    • Replaces axle bump stops on frame
    • No drilling required


Specs:

  • Capacity: 8,600 lbs
    • Do not exceed the vehicle's weight-carrying capacity
  • 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 vehicle 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.



GMRCK15S - Rear Suspension Enhancement System with Aeon Hollow Rubber Springs by Timbren

Replaces Timbren TGMRCK15E

Installation Details TGMRCK15S Installation instructions

This Product Fits The Following Vehicles





Customer Reviews

Timbren Rear Suspension Enhancement System - TGMRCK15S

Average Customer Rating:  4.7 out of 5 stars   (2323 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.

- TGMRCK15S
by:
2014 Chevrolet Silverado

Tough to decide, Timbrens or air suspension. I opted for Timbens in part because of price, but also no maintenance, while knowing there might be a trade-off in fine tuning the ride. I installed the Timbrens on an '09 Silverado C1500 crewcab, pulling a '13 Springdale 247FWRLLS. Last measured pin weight was 1,120 lbs. Install time was 14 minutes, clock started after purchasing and cutting a piece of 4x4 to help jack up the frame, allowing access to the space. Before Timbrens, 2" drop in bed height after hitching 5th wheel. After Timbren install, 1" drop. Ride unhitched is mostly unchanged, the bigger bumps transmit a more firm feel as the Timbrens connect though. When hitched to the 5th wheel, overall smoother, more confident ride. I'm happy with the purchase. Thank you eTrailer.com for the fast and dependable service you are known for! Tom Round Rock, TX 54799



- TGMRCK15S
by:
2014 GMC Sierra 1500

I installed this product to help level my 2014 GMC 1500/4x4 when towing a 18ft trailer. They work great and yes I would buy them again. However it will stiffing the ride of your vehicle with no load. If you do not use your truck a lot to carry or pull loads you may not like them. They work just as instructed by the company. Took me only 15 mins to install and a good looking product. 170614



- TGMRCK15S
by:
2015 GMC Sierra

Received yesterday (quick shipping!), installed today on 2015 GMC Sierra 1500 4WD Crew Cab short box. What a difference between the Timbren's and OEM bump stop from GMC. Installed for towing large travel trailer. Used floor jack under rear hitch to raise up truck to get enough room for socket to install bolts. Use 10mm socket to remove OEM bolt & bump stop, use 17MM socket to install new bolt and Timbren. Very east installation process. 319774



- TGMRCK15S
by:
2014 Chevrolet Silverado 1500

Great product easy to install, took me longer to take the tire off and on than install the product. I hooked up the truck to the trailer and before it stood at 39 inches and when hooked up it dropped to 37 1/2 from the floor to the wheel weld. Overall ride is comfortable with an empty truck load. Purchesed Sunday and was delivered by Wednesday. Great product 518566



- TGMRCK15S
by:

Installed last night in under 30 minutes very happy! 518226



- TGMRCK15S
by:
2018 Chevrolet Silverado 1500

Thay do not touch rear housing after loading One half inch gap Ronnie dobbins 572745


Comments
There should not be a gap when the truck is loaded. When the truck is unloaded the 1/2 inch gap is normal. It sounds like you need a 1/2 inch spacer part # TA25722-90P00
Timbren 1/2" Spacer for Raised Frame Vehicles
$18.65
. The spacer is designed for lifted trucks to ensure the spring will engage when the truck is loaded.
-- Heather A - 10/24/2018

44996

- TGMRCK15S
by:

Easy to install and keeps the rear from saging. Seems to help with sway control when pulling my 30 ft camper. Does make the ride a little harsher but worth it. Highly recommend. 595296



- TGMRCK15S
by:

I ordered the product late one evening. When I received confirmation I noticed that I had reversed the the bill to: and ship to: immediately e-mailed CS as the office was closed. Very early the next morning I received a call from e-trailer and they immediately took, care of the situation and I had my order in two days, in Alaska! Have not yet installed the product. 210976


Comments
Easy installation. System works as advertised. No load ride is the same as without a load. Loaded the system controls and slows the amount of travel the suspension can travel.
Peter S - 07/10/2016

19286

- TGMRCK15S
by:

I put these on a Z71 1/2 ton truck. I found a gooseneck horse trailer with living qaurters 33' long total and when the dealer hooked it to my in bed hitch the truck dropped about six inches told too much trailer for my truck they suggested air bags never heard of timbren I installed the timbrens went back to dealer this time test pulled you would think its a 3/4 ton truck now only 3" sag bought trailer pulled it home thanks timbren! great product saved me from bying a different truck dealer thinks it will start selling these! 47330


Comments
Thanks for the info Kevin. I just purchased a 3 horse slant gooseneck and my Ford F150 squats a bit. Think these will solve my issue. Thanks for helping me make up my mind!!
-- comment by: Mike B - 08/07/2014

6115
Comments
How does your truck ride without A load?
-- comment by: Manny - 12/06/2015

16070

- TGMRCK15S
by:
2013 Chevrolet Silverado 1500

FAST DELIVERY! Installed in 25 minutes. Fit was perfect. Reduced squat by 2 inches on 6000lb trailer without the WD bars attached. Should be even better with bars on. 2013 Chevy 1500. 102891


Comments
How is the ride in the truck with no load?
-- comment by: Lance S - 05/21/2014

4344

- TGMRCK15S
by:
2013 Chevrolet Silverado

Easy to install and works exactly how I wanted. 1.25” clearance w/o a load on them. After connecting my enclosed trailer to my Chevy Silverado 1500, they were flush. Truck drives w/o the front being ‘squirly’ and the rear saggy. Nice and level. 499823



- TGMRCK15S
by:

Etrailer expedited the package early due to returning customer. Parts delivered in double packaged boxes. Installed in 1/2 hour after fighting the old rusty bolts. Have not had a chance to load test yet. Will give another follow-up review after truck and trailer are loaded. 78488



- TGMRCK15S
by:
2017 Chevrolet Silverado 1500

Second set of Timbren’s that I have purchased for a different truck. Prefer these over air bags. Things can go wrong with air bags like loss of air, air bag punctured. These Timbren’s are made of very hard and durable rubber that can hold massive weight. These took the sag out of the back end of my truck when I hook up the camper. Sway and drift in the front end of my truck when towing is gone now. I feel like I in control of my truck when towing. These even helped with sway during towing. Not too difficult to install. Once you have the truck lifted, it took about 10-15 Mins per side to finish the installation. etrailer had them shipping amdnat my door in two days! The right package arrived for my specific Chevy Truck. Priced very fairly too. Thanks etrailer! 522266



- TGMRCK15S
by:
2015 GMC Sierra

Installed these Timbren bump stops on my 2015 GMC Sierra 1500 and couldn't be happier! You must follow install directions exactly, meaning you must take all weight off the rear axle. I blocked the front wheels and then used my floor jack at the rear hitch to lift the rear off the ground. Once this is done you have the clearance needed to get tools in for the removal of the old and replacement of the new ones. Watch the short install video and you'll have all the info you need to accomplish this. Old GM bump stops look like "toys" compared to these. Great purchase. 277397



- TGMRCK15S
by:
2018 Chevrolet Silverado 1500

Etrailer shipped very fast! Awesome people to deal with. The install went just as fast! Probably 20 minutes. I used a farm jack on the trailer hitch to bring both rear wheels up enough to have room to work. I put jack stands under the hitch for safety. Didn’t need to remove the wheels and they weren’t off the ground. Removed the old stop and attached the new ones. Simple! Test drove (in the rain) with nothing in the bed and never felt it till I hit a speed bump. Felt a little bump. I’ll be taking my RV out in a week. Looking forward to seeing what it will do for that. This was put on a 2018 GMC 1500 with big tow package. 581466



- TGMRCK15S
by:
2015 Chevrolet Silverado 1500

Caveat: I just installed these and have only road-tested unloaded. 1. As usual, etrailer filled my order quickly and accurately. 2. Installation was as easy as advertised. I did not have use of a lift and did it in my driveway. I did not remove the tires. I lifted one side at a time, blocked all other wheels and used a jack stand to back up my bottle jack. Hint #1: the higher you lift the truck, the more clearance you will have to work over the tire and insert your socket into the jounce stop and Aeron spring. Hint#2: The hole in the bottom of the factory jounce stop is small. Use a 3/8" drive 10mm socket. My 1/2" 10mm socket wouldn't go in the hole. 3. Installed, I ended up with a little more than 3/4" clearance. My road-test showed me that the Timbren SES has NO influence on unloaded ride unless you drive like an eedjit and hit speed bumps too fast (which I purposefully did.) Once you eliminate the 3/4" clearance between the SES and the axle you'll feel the extra stiffness right away, but it was not a shocking hit. I'd describe it as "authoritative." I'm happy. 566992



- TGMRCK15S
by:
2007 Chevrolet Silverado

Great product, quick install. Fast delivery! Very pleased with product. Installed on 2007 Chevy Silverado 1500(new body style). Used Firestone air bags on last truck and always had to add air. timbrens are ready for work everyday without maintenance. 178862



- TGMRCK15S
by:
2011 GMC Sierra

Super Fast shipping. Ordered on Monday( a holiday) and reviewed Tuesday afternoon. Very easy install. Thank you. 67446


Comments
how is the ride without weight?
-- comment by: Orville W - 12/12/2015

16151

- TGMRCK15S
by:

Ordered by telephone around 10:30 AM, product was delivered via UPS around 1:30 PM the next day. I had them installed that evening after getting home. I hooked up my travel trailer to my truck, everything leveled out, no sag. Can't wait to see how they do on the road pulling my trailer. 65385


Comments
The suspension enhancement works as I wanted it to perform. I am well pleased with it. I tell others about it when we talk travel trailers and pulling. My wife says it rides like a truck. My reply is and!
-- comment by: Marcus - 02/12/2014

2779

- TGMRCK15S
by:
2011 GMC Sierra

Added these Timbrens with two 1" spacers on each side on a 2011 GMC Sierra with a 2" lift. Fit great, easy to install. Was more work getting old bump stops off than installing the new Timbrens with spacers. I did need to get 2" longer bolts than what was included to complete the install, but that was to be expected. 488613



- TGMRCK15S
by:
2014 Chevrolet Silverado

I have a 2014 Silverado 1500 and 24’ gooseneck weekender horse trailer. I just got the trailer and the guy I got it from recommended the Timbren’s to me. When I first dropped the trailer on my truck empty it squatted me 4.5” in the rear. The trailer weighs just under 5,000 pounds empty. When I first pulled the trailer empty I wasn’t sure about the Timbren’s they seemed really bouncy on my road. My road is not the smoothest road though. This past weekend I loaded 3 horses into my trailer and traveled about 1.5 hours away and I was blown away at how well my truck drove and handled fully loaded. With the Timbren’s my truck barely squats now. The trailer rode a hundred times better loaded with horses, which most big trailers ride bad when empty anyway. As far as driving with no load at all the truck rides just like normal. However if you hit a big hump in the road sometimes it will be enough to make it hit the Timbren’s and gives a little jolt. As far as recommending I definitely recommend these especially if you have a 1/2 ton truck and pulling a fairly heavy load. 656849



- TGMRCK15S
by:
2015 Chevrolet Silverado 1500

I have waited till I had a heavy on the truck to review this product, it did a great job loaded. On a smooth road I can not tell any difference in the ride of the truck with no load. It is pretty stiff when you hit a big bump with no load. Installation was very easy. Overall I am very satisfied with this product. 504926



- TGMRCK15S
by:

This has proved perfect for my application of towing our yacht. Leveled it up perfectly. Installed just as instructed. 479111



- TGMRCK15S
by:

I was pleasantly surprised to find the installation procedure to be even simpler than the instructions sent with the "Timbrens". So easy even a cave man could do it. Same with the mirror extensions, very simple to install. I can't provide useful feedback (or a meaningful rating) regarding how well these products work. I haven't had a chance to use either the timbren system or the mirrors. My first trip with the trailer will be late September. I'll let you know when I get back....thanks. Dave G 99667


Comments
Unfortunately, I ended up returning the timbrens and replaced them with the Firestone Air Shocks. The Timbrens worked fine when hauling the trailer. However, without a load on the truck, the timbrens prevented the shock absorbers from engaging when needed and the resulting ride was very uncomfortable. The air shocks are the way to go if you only need the extra suspension on occasion. Thanks. dg
Dave G - 09/12/2014

6793

- TGMRCK15S
by:
2017 GMC Sierra 1500

Easy to install. bumpers didn’t touch axle with boat attached. Loaded with fire wood and bumpers were in contact. when driving with fire wood load on truck the truck seemed to bounce on the bumpers and was a little rougher a ride than normal but the back of the truck did not sag like it did without the Timbrens installed. Not quit the same as helper springs but they didn’t jack the back of the truck up like the helpers, so I didn’t have to raise the front of the truck to Level it when empty. Ride is great when empty and I don’t have a load on it often so they’re doing the job. 502190


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2635
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Ask the Experts about this Timbren Vehicle Suspension

  • Comparing the Timbrens and SumoSprings for a 2014 Chevy Silverado 1500
    I have two options for you to help with squatting while towing with your 2014 Chevrolet Silverado 1500. These two options are the Timbren Rear Suspension Enhancement System part # TGMRCK15S and the SumoSprings Solo Custom Helper Springs part # SSR-209-40. The main difference between the two is that the Timbrens are made of a much more dense rubber so they will provide more support but the adverse effect of this is that they could also decrease the loaded ride quality. The SumoSprings...
    view full answer...
  • How Many Lift Spacers are Needed for Timbren Springs on a Lifted 2013 Chevy Silverado 1500
    Finding the correct spacer(s) for a lifted truck can be a little tricky sometimes due to the number of lift kits out there. The best way to determine how many spacers you need for the Timbren Suspension Kit, # TGMRCK15S, for your 2013 Chevy Silverado 1500 is to measure the distance from the underside of your frame where your bump stop sits to the axle directly below where the spring makes contact. The spring and bracket in this kit measure 5 inches tall unloaded and the spring should...
    view full answer...
  • Best Suspension Enhancement for 2020 Chevy Silverado 1500 for Squat When Towing
    Thanks for the photo and the Timbren Rear Suspension Enhancement System # TGMRCK15S you mentioned is a good option for helping keep your 2020 Chevy Silverado 1500 level, but the best option is something a little different, the Roadmaster Active Suspension Custom Leaf Spring Enhancement Kit # RAS4611. The reason why the RAS kit is the best is because it is an active system, which means it continually works to reinforce your Silverado's leaf spring suspension. The force normally put on...
    view full answer...
  • Comparing Timbrens and SumoSprings for a 2019 Chevy Silverado 1500
    The main difference between the Timbren Rear Suspension Enhancement System part # TGMRCK15S and SumoSprings Solo Custom Helper Spring part # SS45FR for a 2019 Chevrolet Silverado 1500 is hardness. The Timbrens are much denser than the SumoSprings so although they will provide more support, they will also produce a rougher ride. I recommend the SumoSprings since it does not sound like you will be towing everyday and still need the truck to have a factory-like ride quality most of the time...
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  • Comparing Firestone and Timbren Jounce Style Suspension Enhancement TGMRCK15S vs F8610
    So the Timbren kits like the part # TGMRCK15S that you referenced are known to provide great suspension support but they are also known to be a bit harsh when unloaded. The Firestone Work-Rite kits like part # F8610 are much more comfortable than the Timbren kits but maybe they don't provide quite as much suspension support. I'd pick between the two based on what you prioritize. If you want the most support possible then Timbrens, if you want a slightly more comfortable ride with still...
    view full answer...
  • Will Timbren Rear Suspension Enhancement Work on 2012 GMC Sierra with 6 Inch Lift
    The Timbren Rear Suspension Enhancement System # TGMRCK15S referenced in your question is confirmed to fit your 2012 GMC Sierra 1500. If the truck has a 6 inch suspension lift, you will just need to add some of the Timbren 1 Inch Spacers # A25723-90AH00. I recommend measuring the area between your truck's frame and axle where the factory bump stops are currently to determine exactly how many of the spacers will be needed. You will need to have between 1/2 inch to 1 inch between the bottom...
    view full answer...
  • Timbrens or Roadmaster Active Suspension for 2020 Chevy Silverado 1500
    So just to answer the first part of the question, since you don't have a lift on your 2020 Chevy Silverado 1500 you do not need a spacer to use the Timbren Rear Suspension Enhancement System # TGMRCK15S. As for comparing the Timbrens to the Roadmaster Active Suspension Custom Leaf Spring Enhancement Kit # RAS4611, the answer really depends on how much you tow or need suspension support for your Chevy. The Timbrens will do a great job for semi-regular towing or support, but if you are...
    view full answer...
  • 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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  • Which Timbren Kit for 2020 Chevy Silverado 1500 Towing 5,900 lb Travel Trailer
    The lighter duty Timbren kit part # TGMRTT15S is the way to go for your 2020 Chevy Silverado 1500 towing a travel trailer that weighs 5,900 lbs. The heavier duty option is going to be much harsher in ride quality so I would not recommend it.
    view full answer...
  • Does Timbren Suspension Enhancement Fit 2019 GMC Sierra 1500 Denali
    Yes, the Timbrens # TGMRCK15S do fit your 2019 GMC Sierra 1500 Denali. I've linked a video showing the installation on a 2016. The install process is the same. These install with a single bolt replacing your factory bump stops.
    view full answer...
  • Extra Suspension Support on my 2015 GMC Sierra Denali
    The SumoSprings Solo Custom Helper Springs part # SSR-209-40 will be a good fit for your 2015 Gmc SIerra 1500 4x4 with the magneride. They will only see pressure when the vehicle is loaded and won't interfere. At their initial contact point they are quite soft. I also like the way you worded it to say support. These systems won't add capacity to the truck just help it handle what it was designed to haul.
    view full answer...
  • Rear Suspension Enhancement for Rear Sag with Trailer on 2018 Chevy Silverado 1500
    To help reduce rear sag when hooked up to your camper the best option in terms of rear suspension enhancement is an air bag system. This will let you actually fill the bags up when needed to close up the gap between your bump stop and contact point with a heavy load. For your 2018 Chevy Silverado 1500 4x4 I specifically recommend the Firestone Ride-Rite # F2430. These air springs will provide you with up to 4,800 pounds of load-leveling support and their unique double-convoluted construction...
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  • Which Timbren Springs For 2019 Chevrolet Silverado 1500
    I recommend Timbren Rear Suspension Enhancement System part # TGMRCK15S for the 2019 Chevy Silverado 1500 2WD. These Timbrens are designed for pickups compared to the other options that are designed for service vehicles like ambulances. They provide a 8,500 lb capacity and will support the suspension to avoid rear sag. They are are a straight forward installation because they simply replace the bump stop compared to other options that require hours of installation time. I have attached...
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  • Will the Timbren Rear Suspension Enhancement System Fit a 2010 Chevy Silverado 1500 with FlexFuel
    I spoke with Timbren and can confirm that the Timbren Rear Suspension Enhancement System part # TGMRCK15S will fit your 2010 Chevrolet Silverado 1500 with the FlexFuel package. The only fit exclusion we have is for the XFE models which are lowered from the factory and why the Timbren Rear Suspension Enhancement System will not work but FlexFuel is okay.
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  • Recommended Rear Timbren Spring Clearance On A Lifted 2014 Chevrolet Silverado
    Per the manufacturer's recommendations, there should be approximately 1"-1.5" of clearance between the rear contact point and the Timbren Rear Suspension Enhancement part # TGMRCK15S when not under load. Too little space will cause the spring to constantly ride on the axle/bracket resulting in a bouncy uncomfortable ride where as, a spring to far from the contact point will not allow for the full capabilities of the spring to be exerted. Since you currently have 1"-1.5" of clearance,...
    view full answer...
  • Recommended Suspension Enhancement for 2016 Chevy Silverado 1500 with Truck Camper
    To help support a heavier truck camper like your Northstar Liberty that's going to give you a pretty consistent load the best option is with a Timbren Suspension Enhancement System. For your 2016 Chevy Silverado 1500 the Timbren # TGMRCK15S for the rear axle will work perfectly. These heavy-duty rubber springs will replace the factory bump stops on your Silverado to provide 8,600 pounds of load-leveling support. These will do a great job of preventing sag on the truck with the camper...
    view full answer...
  • What is Difference Between Timbren Suspension Kits # TGMRCK15S & TGMR15MR For 2020 GMC Sierra 1500
    There is a difference between the kits you mentioned. The part # TGMRCK15S is for the Denali models and the part # TGMR15MR is for the models that have adaptive ride control.
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  • Timbren Suspension Kits for 2000 Chevy Silverado 1500
    We have both front axle and rear axle Timbren rubber spring suspension enhancement kits for your 2000 Chevy Silverado 1500 that are displayed on the linked page. You can also see other kit options including air bags. For a rear axle Timbren kit you can use # TGMRCK15S which fits both 2WD and 4WD models. If you are interested in a front axle kit too, in case you use a snowplow for example, you can use Timbren kit # TGMFK25S for 2WD or kit # TGMFK15A for 4WD (if the truck is a 2-door model).
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  • What is the Height of the Springs in Timbren Suspension Enhancement Kit # TGMRCK15S
    I went out to the warehouse and pulled Timbren kit # TGMRCK15S to take some measurements for you. The overall height of the spring is 5-1/8 inches and the overall width is 4 inches (diameter). Timbren does make some 1 inch spacers, # A25723-90AH00, that you could use if more height is needed. This may result in the need for longer bolts that you would need to obtain locally. Use grad 5 or better bolts.
    view full answer...
  • Best Way to Reduce Body Roll on a 2015 GMC Sierra 1500
    The Timbren Rear Suspension Enhancement System part # TGMRCK15S and the SumoSprings Custom Helper Springs Kit part # SSR-209-40 are both great options to help reduce the body roll you are experiencing while loaded. Neither of these suspension enhancements will affect the ride of your vehicle while unloaded for the exception of the occasional bump or pothole. While loaded the Timbren springs will give you the most support and the SumoSprings will give you the most comfortable ride. For...
    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...
  • Will Timbren Suspension Enhancement Fit 2014 Chevy Silverado 1500 With Leveling Kit
    If you have an OEM leveling system installed on your 2014 Chevrolet Silverado 1500, you can test the system to make sure it is working properly before investing in additional equipment. I recommend having one or two people sit on the rear of your truck bed and see if the system you have adjusts for the added weight. If it does not adjust the suspension when the weight is added I would take the truck to a dealership to have the system checked out. If it is an aftermarket system, you...
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  • Will Timbren Rear Suspension Enhancement Kit # TGMRCK15S Fit 2009 Silverado 1500 with FlexFuel
    I reached out to my contact at Timbren and she verified that the Timbren Rear Suspension Enhancement System # TGMRCK15S you referenced will fit your 2009 Chevy Silverado Z71 1500, even if it has the XFE or FlexFuel package. This may have been a fit note for previous model trucks that got carried over but there's no issue with this installing these springs on yours. I have attached a sample installation video that you can follow along with as well as the written manual that you can check out.
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  • Timbren Rear Suspension System Used in Place of an Anti-Sway Bar on a 2009 Chevrolet Silverado 5.3L
    The Timbren Rear Suspension Enhancement System, # TGMRCK15S, will help stabilize the vehicle, absorb shock and help keep the vehicle level when pulling your 25 ft toy hauler, but should not be used to replace an anti-sway bar on your 2009 Chevrolet Silverado 5.3L. The Timbren suspension enhancement system is designed to work with your vehicles current suspension system and should not be used to replace any component of your suspension system other than bump stops.
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  • Can Weight Distribution be Used with Suspension Enhancement on 2017 Chevy Silverado 1500
    With the use of suspension enhancement like the # TGMRCK15S and weight distribution the trick is to install the suspension enhancement kit first and then go through the weight distribution system setup process after so that you get the correct amount of spring bar tension per the new suspension setup.
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  • Timbren Rear Suspension Enhancement Package Contents
    The Timbren Rear Suspension Enhancement System # TGMRCK15S comes with 2 of the Aeon springs for both wheels on your rear axle, vehicle specific brackets and the mounting hardware.
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  • Suspension Enhancement Recommendation for a 2014 GMC Sierra 1500 Towing Trailer Causing Sag
    For adjustability you can't beat the air systems like the part # F2430 for your 2014 GMC Sierra 1500, but I think your best option would be the part # TGMRCK15S since you don't want to mess with the air bag systems. The Timbren will provide you suspension support that will only be there when needed. This will greatly reduce the sag of your rear suspension and won't require you to maintain air pressure like the air systems do. I attached an install video for you to check out as well.
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  • What Stops Porpoising on Tow Vehicle that is Using Weight Distribution with Trailer
    Most of the time when a tow setup is porpoising with a weight distribution system all you have to do is add a bit more spring bar tension to minimize the porpoising. With an Equalizer system you would need to angle the spring bars down further to add the additional tension. Suspension enhancement like the Timbren part # TGMRCK15S would help but you should be able to solve the problem with the WD system.
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  • Can a Timbren Suspension Kit be Used with Weight Distribution System
    Yes, you can use a Timbren system like the part # TGMRCK15S with a weight distribution hitch on a 2017 Chevy Silverado 1500. If you have the WD system already you'll have to go through the setup process again after the Timbren install since you'd need less spring bar tension.
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  • Is Weight Distribution Hitch Needed on 2014 GMC Sierra 1500 Pulling 5000-lb Toy Hauler Trailer
    A weight distribution hitch, either with or without sway control, is called for under specific towing circumstances: if your trailer weight (GTW) is more than 50 percent of your vehicle's weight (GVWR); if the rear of your tow vehicle sags when the trailer is hooked up; or if your vehicle headlights point upward. These and other conditions that merit a WD system are detailed in the linked article. Weight distribution systems and rear-axle suspension kits do not address the same issues....
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Info for this part was:

Expert Research:
Mike L
Expert Research:
Michael H
Expert Research:
Jeff D
Expert Research:
Jameson C
Expert Research:
John H
Expert Research:
Adam R
Expert Research:
Lori W
Expert Research:
Jeffrey L
Video Edited:
Zack K
Video Edited:
Joshua S
Video Edited:
Jacob T
Video Edited:
Chris R
Video by:
Andrew K
Video by:
Jonathan Y
Test Fit:
Nicholas E
Test Fit:
Robert C
Installed by:
Cole B
Updated by:
Mary E
Updated by:
Sarah W
Updated by:
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