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  1. Vehicle Suspension
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  3. Jounce-Style Springs
  4. Rear Axle Suspension Enhancement
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Timbren Rear Suspension Enhancement System
Timbren

Timbren Rear Suspension Enhancement System

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$269.36
Retail:$316.90
You Save: $47.54
Vehicle Suspension

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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. Great 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 1-800-940-8924 for expert service.
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Timbren Vehicle Suspension

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


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.



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

Replaces Timbren TGMRCK15E

Item # TGMRCK15S

Installation Details TGMRCK15S Installation instructions

This Product Fits The Following Vehicles




Customer Satisfaction Score:


Customer Reviews

Timbren Rear Suspension Enhancement System - TGMRCK15S

Average Customer Rating:  4.7 out of 5 stars   (6500 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.

by:

I Installed this in less than 30 minutes, very simple.This is the first day using it,The rear of my truck went back up to normal, it does ride a little rougher but seems to do what was designed to do. I'm
happy with the results so far.



by:

Pretty easy installtion and much needed in the 'Burb when towing our travel trailer and kids. All said and done in about 30 minutes with two people.



by:

Super easy to install. I installed on my lunchbreak. Only took 30 minutes to install including removal of old bumpers, installing new bumpers and double and triple checking to make sure they were in solid. Since they don't touch during normal driving the ride hasn't changed.



by:

2009 Tacoma, rear supports, easy install, jack it up, take off wheeel, remove 1 u bolt holding leaf spring and loosen the other, remove old bumper and slide in a new one, tighten & you're done.



by:

Much heftier replacement over the stock bump stop



by:

They were very easy and quick to install. First trip out with the travel trailer was successful.



by:



by:

I think the timbrens are just what I ne eded



by:

They made a world of difference in the truck/camper stability



by:

Made a big difference in how the vehicle tows when we have the camper hooked.



by:

Came in their own professional looking manufacturer retail product box just as I was expecting.



by:

Great product. I have used on 4 vehicles now and am really pleased with timbres products. As always I have received excellent service from trailer. You guys are great!!!!!



by:

IT WAS LIKE HAVING A BRAND NEW SUSPENSI ON.



by:

Product was delivered on time. Installation was easy it took less then 30 minutes.



by:

this product was shipped lightening fast, it took me 15 minutes to install. my truck does not squat now rides level when pulling my toy hauler. wasnt the first time i bought here and wont be the last. this is by far the best store online.



by:

Order came in on time. Product looks great. Install was simple, however I recommend to use a little WD40 on the insert hub as this helps slide it in the bump stop cup because it is a very tight fit.



by:

Easy installation on 1993 F-150. Used both main rubber Spring & added plate with longest bolt. Looking forward to seeing reduced squat during loading the bed.



by: 07/05/2021

did not do what I wanted it to do.



by:

Easy installation, works fine.



by:

They arrived early and intact. I am so happy to have these for my truck. They fit perfectly and only took about 15 minutes to install. I looking forward to putting them to the test when pulling my travel trailer.



by:

Worked fine. Sold truck



by:

great easy fix for load carrying squat! easy install,. no noticeable change with ride quality either. I will install on my 3/4 ton as well!



by:

The hardware that came in the kit was completely wrong. Stated M10 x 60 and 90 mm. Came with three different lengths of M8 hardware of neither length. Had to source hardware locally. Much too expensive for having to spend more money for the right bolts. Just hope this inattention to detail is not an indication of the quality of the product. Will likely not purchase products from this company again.



by:

As far as keeping the rear from drooping it works good. The only negative is that the truck rides a little rougher, it doesn't have as much play when hitting bumps.



by:

This worked great for reducing the boat action (porpoising) of my RAM 2500.


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See what our Experts say about this Timbren Vehicle Suspension

  • 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 RoadActive 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 your Chevy's...
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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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  • Do You Recommend the Timbrens or Roadmaster Active Suspension for My 2021 Chevy Silverado 1500?
    As for comparing the Timbrens # TGMRCK15S to the Roadmaster Active Suspension Custom Leaf Spring Enhancement Kit # RAS54FR on your 2021 Chevy Silverado 1500 (4x4), 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 a regular tower I recommend going with the Roadmaster Active Suspension # RAS4611. The reason is because the force put on your Chevy's springs when towing,...
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  • What Is Recommended Space for SumoSprings On 2020 Chevy Silverado 1500
    The SumoSprings Solo Custom Helper Springs part # SS45FR which are a fit for a 2020 Chevrolet Silverado 1500 will provide around a 1/4"-1/2" gap between the spring and contact point. These will have a much tighter fit than the Timbren Rear Suspension Enhancement System part # TGMRCK15S but since they are softer won't create any ride quality issues. If the vehicle has been lifted, you can use spacers like the Timbren 1" Spacer For Raised Frame Vehicles part # A25723-90AH00.
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  • 5th Wheel Towing Capacity For A 2007 Chevy Silverado 1500
    The 9,048lbs is the dry weight but you still want to account for the weight of your cargo. Per the owners manual, you're limited to between 14,000 to 16,000 lbs as far as Gross Combined Weight Rating of the completely loaded vehicle and trailer including any passengers, cargo, equipment and conversions. If you load your truck as you intend on using it, you can have it weighed at a commercial scale location. The difference between this weight and the Gross Combined Weight Rating total...
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  • Which Jounce-Style Suspension Enhancement Should I Install On 2020 Chevy Silverado 1500 Non Mag Ride
    The Timbren and Sumo Spring suspension enhancement systems use a jounce-style spring which is an excellent choice for leveling out your truck and trailer, all while improving handling and reducing trailer sway. They simply replace your factory bump stops and require a simple bolt-in installation process. The SumoSprings Solo Custom Helper Springs - Rear Axle # SS45FR are confirmed to fit your 2020 Chevrolet Silverado 1500 but this only has a 1,500lb weight capacity for the rear of your...
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  • Difference Between Timbren And SuperSprings Suspension Stabilizer For 2016 Chevy Silverado 1500 4WD
    So the difference between the Timbren Rear Suspension Enhancement System # TGMRCK15S and SuperSprings Custom Suspension Stabilizer and Sway Control Kit # SSA28 are the benefits they offer and what you are looking to get out of an enhancement system. The Timbrens # TGMRCK15S are jounce springs and how they work is simple but effective. When you have additional weight at the rear of your truck, like when towing, it will sag, causing the front of the truck to rise. This causes your front...
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  • Recommended Towing Enhancements for 2019 Chevy Silverado 1500
    There are two products that you can add to your vehicle and towing setup that will help improve the ride quality while towing: a weight distribution hitch and a suspension enhancement of some sort. I recommend starting with a weigh distribution hitch, and the Equal-i-zer Weight Distribution System # EQ37120ET should work for your 7500-lb GVWR trailer; you'll want to confirm that the tongue weight of your trailer falls between 800 and 1200-lbs (staying towards the middle of that range...
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  • Can Timbrens for 2003 GMC Sierra 1500 Be Used without Spacer
    The correct Timbren Rear Suspension Enhancement System for a 2003 GMC Sierra 1500 LD is part # TGMRCK15S for extended or regular cab models and part # TGMRCK25S for crew cab models. The springs once installed should be anywhere from 1/2" - 1-1/2" from the contact point. If you would like to decrease the gap then you can remove the spacer from the latter kit which would make the spring not engage as often.
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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 capacity...
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  • Comparing Unloaded Ride Quality of Firestone Air Bags to Timbren Suspension Enhancement
    If you are looking for something that will not impact your ride quality when you aren't towing, the Firestone Ride-Rite Air Helper Springs - Double Convoluted - Rear Axle # F2430 are the way to go. The Timbren Rear Suspension Enhancement System like the # TGMRCK15S is pretty stiff and has a tendency to impact ride quality when unloaded as you go over bumps in the road and the jounce-style springs make contact. Since the # F2430 is adjustable, this can be avoided. When you aren't towing...
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  • What Are The Differences Between The Timbren TGMRCK15S And TGMR15MR For A 2021 GMC Sierra 1500
    These two Timbren rear suspension systems are the same except for two major differences. They are both compatible with your 2021 GMC Sierra 1500. They are each rated at 8,600 lbs and are rated extra heavy duty. The differences are the Timbren Rear Suspension Enhancement System, part # TGMRCK15S, is jounce-style spring that replace axle bump stops on your frame and it does NOT fit vehicle's with equipped with Adaptive Ride Control. While the Timbren Suspension Enhancement System - Rear Axle,...
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  • Rear Suspension Enhancement Recommendation for 2010 Chevy Silverado 1500 Z71 4WD Crew Cab
    The best suspension enhancement we offer for your 2010 Chevy Silverado 1500 is the RoadActive Suspension Kit part # RAS54FR which will give you the support you are wanting for the trailer you plan to tow while improving loaded and unloaded ride quality as well as handling and stability. Other options, specifically Timbrens, are known to make the ride quality a bit harsher which is why I don't typically recommend them unless the vehicle will be loaded down nearly all of the time.
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  • Using Lift Spacers for Timbren Springs on a Lifted 2011 GMC Sierra
    I can gladly help you with your spacing problem but I am going to send you in the direction of another product. SumoSprings will not work for your application. I recommend going with the Timbren Rear Suspension Enhancement System item # TGMRCK15S. They have an 8,600 lbs capacity. They have hollow rubber springs that sit above the rear axle to help stabilize and level your GMC Sierra. They also provide a more comfortable ride by absorbing road shock and improving roll stability. The springs...
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  • Suspension Enhancement Recommendation for 2015 Chevy Silverado 1500 that Is Not an Air Bag
    We have great suspension enhancement options for your 2015 Chevy Silverado 1500 that will help support the rear suspension. The Timbren kit part # TGMRCK15S is a confirmed fit and is a jounce bumper style of kit instead of an air bag. This means you get all of the support without having to inflate air bags at any point.
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  • Recommended Rear Timbren Spring Clearance On A Lifted 2014 Chevrolet Silverado
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  • How to Remove Factory Bump Stops in 2020 Chevy Silverado 1500
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  • Timbren Helper Springs for a 2003 Chevy Silverado 1500 Light Duty
    Timbren helper springs # TGMRCK15S will fit your 2003 Chevy Silverado 1500 light duty. The videos are trucks our customers brought us for the installation. We haven't had someone bring in a 2003 for this product so there isn't a video. But installation on your 2003 will be nearly identical to the 2005 which I have linked for you.
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  • Timbren Suspension Enhancement Recommendation on 2014 GMC Sierra 1500
    Suspension enhancement for your 2014 GMC Sierra 1500 is a good idea and will provide a more level and comfortable ride when towing your new travel trailer. According to Timbren, the Rear Suspension Kit part # TGMRCK15S-M2 mentioned in your question is a special kit designed more for lowed trucks. I recommend the 6,000lb Timbren # TGMRCK15S system as this is a confirmed fit for your vehicle and will give you plenty of room to work with at the listed weight capacity. I have included a...
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  • Difference Between the Timbren and Supersprings Suspension Enhancement Systems on a 2015 Silverado
    While it will not hurt your vehicle, using two suspension enhancement products at the same time could render one product ineffective or will cause one system to be used at limited potential. For example, if you try using both the Timberen Rear Suspension Enhancement System # TGMRCK15S and the SuperSprings Suspension Stabilizer # SSA5MTKT, with a load in the truck, once the Timberen Springs engage the SuperSprings will not be doing much for the load. I do not recommend using both systems...
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  • How To Fix Rough Ride with Timbrens On 2017 Chevrolet Silverado 1500
    The Timbren Rear Suspension Enhancement System part # TGMRCK15S is a great option to help reduce sag while towing with a 2017 Chevrolet Silverado 1500 but they do have a tendency to ride rough as the material is very dense. I think the perfect option for a compromise between support and comfort are the SumoSprings Solo Custom Helper Springs part # SS95MR. These ride much smoother than Timbrens and still provide support for towing or hauling.
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  • Recommended Rear Suspension Enhancement For 2021 GMC Sierra 1500 AT4
    The correct Timbren Rear Suspension Enhancement for your 2021 GMC Sierra 1500 AT4 is the Timbren Rear Suspension Enhancement System # TGMRCK15S you were looking at which has an 8600lb load rating, but I have a different option for you. I recommend going with the SumoSprings Solo Custom Helper Springs - Rear Axle # SS45FR which have a load rating of 1500lbs which is plenty for your 6500lb travel trailer since the only weight that gets put on the rear suspension of your truck is the tongue...
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  • Timbren Suspension System Recommendation for a 2014 GMC Sierra 1500
    The difference between the two Timbren systems you referenced is the application for each. The Timbren Rear Suspension Enhancement System - Severe Duty # TGMRTT15S is designed for service vehicles only so it would not work for you. The # TGMRCK15S would make an excellent choice for a suspension enhancement system for your vehicle. This system has plenty of capacity for the ton of pellets you carried, and is great because when your vehicle is unloaded your ride quality will be exactly the...
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  • Which Timbren Kit Fits 2018 Chevrolet Silverado 1500 without MagneRide
    We have a Timbren kit that fits your 2018 Chevy Silverado 1500 without MagneRide but the part # TGMRCK15MR is the version that is for the Magneride. So instead what you'd want is the part # TGMRCK15S.
    view full answer...


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