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  1. Vehicle Suspension
  2. Timbren
  3. Bump Stops
  4. Towing/Load Leveling
  5. Front Axle Suspension Enhancement
  6. Extra Heavy Duty
THIS ITEM IS NOT A FIT FOR
2011 Lexus GS 450h
etrailer Installation
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Timbren

Timbren Front Suspension Enhancement System

Part Number: TGMFK15B
In Stock
$269.36
Retail:$316.90
You Save: $47.54
Vehicle Suspension
Not Confirmed to Fit

2011 Lexus GS 450h

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etrailer Installation
We'll connect you with nearby partnered installers who know this exact setup.
14,000-lb Capacity. Great for trucks with plows, these front hollow rubber springs help to 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 Front Suspension Enhancement System part number TGMFK15B can be ordered online at etrailer.com or call 1-800-940-8924 for expert service.
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  • Reviews (766)
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Timbren Vehicle Suspension - TGMFK15B

Highlights

  • Custom Fit for Your Vehicle: Mounts to existing attachment points
  • 14,000-lb Front Support: Keeps your vehicle level and steady when carrying heavy front loads.
  • Smoother, Safer Ride: Hollow rubber springs absorb road shock and cut down on body roll.
  • Better Steering Control: Reduces sag so handling, traction, and braking stay consistent under weight.
  • No-Drill Install: Bolts onto frame rails in place of bump stops for quick DIY setup.
  • Long-Term Suspension Protection: Cushions impacts to prevent bottoming out and reduce wear.

Features to know about

Keep the Front End Level and Stable: 14,000-lb Suspension Support

Heavy front loads like plows or equipment can make the front end sag and throw off handling. The Timbren Front Suspension Enhancement System adds up to 14,000 lbs of extra support to keep your vehicle level and stable. The hollow rubber springs work with your factory suspension to share the load, improve steering response, and keep headlights aimed correctly even under weight.

Truck front end supported by Timbren suspension to reduce sag from heavy bed or snowplow load

Truck with snowplow showing improved front-end support using Timbren front suspension enhancement system

Smooth Out the Rough Stuff: Hollow Rubber Springs Absorb Road Shock

Bumps and rough roads can wear out your suspension and make the ride harsh when loaded. These Aeon hollow rubber springs act like built-in shock absorbers, softening road impacts while keeping your front end supported. The progressive design compresses easily over small bumps but stiffens as weight increases, giving a smooth ride when empty and firm control when loaded.

Truck on bumpy road showing improved shock absorption with Timbren front suspension enhancement system

Stay Steady in Crosswinds and Turns: Independent Spring Action

When turns or uneven loads push one side down more than the other, each Timbren spring reacts on its own. This independent action cuts down on body roll and sway so your vehicle stays planted through corners or crosswinds. Off-center loads are balanced automatically without affecting the other side, keeping handling predictable.

Timbren suspension enhancement system reducing body roll and vehicle squat during turns or heavy loads

Install It Once and Get to Work: Bolt-On Design with No Drilling

Adding front-end support doesn’t have to be complicated. This kit bolts directly in place of your factory bump stops with vehicle-specific brackets and hardware—no drilling required. Once installed, the rubber springs are always ready to work without air lines, compressors, or adjustments. It’s a simple setup that strengthens your suspension every time you load up or hit rough roads.

Specs

Weight and Capacity

  • Capacity: 14,000 lbs

Included Components

  • Includes: 2 Aeon hollow rubber springs, vehicle-specific brackets and hardware for simple installation

Compatibility and Installation

  • Replaces: axle bump stops on frame
  • Drilling Required: No drilling required
  • Designed to Work With: a suspension system that is in good working order

Warranty

  • Warranty: Limited lifetime warranty - satisfaction guarantee

GMFK15B - Front Suspension Enhancement System with Aeon Hollow Rubber Springs by Timbren

Installation Details TGMFK15B Installation instructions

This Product Fits The Following Vehicles




Ratings & Reviews

4.7

765 reviews
Review sort icon
14,000-lb Capacity. Great for trucks with plows, these front hollow rubber springs help to 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:

The bump stoppers are solid and the directions for installation were clear, even for DIY. The Ford F53 chassis for the Entegra Emblem is challenging to navigate. We found two sets of hands worked best. And installing the bolt from the top of the frame with the washer and nut below worked best.



by:

I like using Etrailer because i can call and talk to a person. These front ones went in pretty easy just like directions said. and they got rid of the bad bumping sound in my front end after hitting a bump. smoothed things right out.



by:

A+++ Excellent product and customer service. Bought both front and rear suspension enhancements and worth it. Highly recommend.



by:

I have a very heavy "Cattle Guard" on the front of my RAM 3500 and this combined with the heavy 4WD and diesel engine the extra support from the Timbren Front Suspension Enhancement System definitely keeps the front suspension from bottoming out.



by:

Installation was not too hard, Install Videos explain all steps in great detail. BumpStops arrived in excellent condition and was delivered in a timely manner



by:

I installed Timbren’s front and rear on my 2020 F53 chassis motorhome. They are by far the best suspension upgrade I have done. I had previously installed Super Steer Trac Bar, Radius Rods and Safe-T-Plus, which had helped, but not as much as I had hoped. The Timbren’s finalized the package and it drives good now.



by:

Easy install, didn't even need the brackets for my application. Really helped with sidesway in the wind and seems to help the front from dipping with extra weight. Haven't tried plowing snow yet but I think they will make a major difference



by:

The timbrens actually did what they were suppose to do. However, once I starter driving out west I notice the timbrens were riding on the axle which cause the speedometer to jump around depending on the road. I would recommend them if you are hauling or towing a camper or RV. I was going to contact etrailer about maybe removing a spacer for one set however the other set came as one unit. The bottom line is the Timbrens does stabilize your load for safe travels. I will be contacting etrailer soon to assist in correcting the problem...Road trip from Idaho,Colorado,Wyoming,and Utah were beautiful... Thank you etrailer



by:

Ok it’s been a year since I’ve had the springs and I’m impressed. With how easy the install is and what you get out of it these are truly amazing. No more “squishy” feeling when towing my 22fy travel trailer. The ride is a little bumpy but I don’t care. I’m glad I found these.



by:

Have them on several trucks now and couldn't imagine running snow plows without anymore.



by:

For me surprisingly easy to install at 67 years old. Had immediate handling improvement and steering control.



by:

I had a problem with getting front sumo springs relative to the rear sumo springs I purchased earlier; however, the staff at etrailer were very helpful in getting me a suspension enhancement component made by timbren which I just installed. I believe the timbren supports are going to do the job I was looking for and make me just as happy as I am with the rear sumo springs. You will notice from the photos the supports make direct contact; however, the pictures were taken on a unlevel surface and when the truck is on a level surface the direct contact is equal on either side. Also, the timbren supports provide substantially more weight capacity in the event I choose to haul my scooter on the front end of the truck. Thanks again Derek S and etrailer staff I am very pleased with the service, customer relations and professionalism experienced when ordering my parts. Thank you, Bobby (Louisiana).



by:

The front Timbren are working very good.The rear not so good



by:

I would say that the product is a bit pricey for what it contains. The secondary bolts came with the wrong sized nuts. Other than that, they work well to support the suspension.



by:

Install was straightforward. Hardest part was getting the old bump stops out. Sway was greatly reduced on the Interstate and the rock and roll by passing semis was greatly reduced. Wish I had bought these sooner!



by:

These bumpstops really work, they stop the front end vibration before it travels through the shocks and springs, for a smooth ride



by:

Pretty pricey but well worth it. Put these all the way around at the same time as new rear leaf springs on our c7500 topkick and it made a huge difference. It's a top heavy bucket truck and it would rock and roll just turning a corner to the point it was downright scary. Now thats greatly reduced. They also smoothed out the ride especially when loaded more than I expected.
Install was simple, perfect fit. Worst part was grinding out the rivet on the old bracket



by:

I haven/t installed them yet. I think I should have gotten a discount for the age of the "box"s the Timbrens were in. May be a credit ,, Brad



by:

Super simple installation that took about 20 minutes. These made a HUGE improvement on steering control and bounce. Driving on the freeway is a breeze. I highly recommend this product.



by:

It good but one side with no bump had to be put spacer but the spacer was flat so the bolt did not have a lot of thread so I grind the spacer a bit so it could stay flush otherwise this might solve the problem of outter tire wear that ford transit has will find out soon



by:

I love these things. They are worth the upfront expense. I have them on two ¾'s, one ½, and a minivan for road trips. This particular set is full-time active up front. I have a 2" leveling kit and I'm in em no matter what. Zero complaints though. Solid performance through all aspects. I don't run any front-end attachments.



by:

I have a 2006 Kodiak 2 wheel drive. Timbrin firmed up the front end to much. There in full contact with the spring. I think it to stuff and I might be removing them. The install was straight forward. Parts are as expected and quality of Timbrin is great. Just not enough cush..



by:

Great ordering, shipping time, cost, and supporting information. We added a snow plow and the product did everything as advertised.



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by:

On time; on target


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See what our Experts say about this Timbren Vehicle Suspension

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    The Coil SumoSprings Custom Helper Springs # CSS-1125F are a fit for your 2WD 2012 Chevy Suburban 1500's front axle and can install with or without the removal of the strut from your truck. They will adjust progressively so you'll get more stiffness from the springs the more weight you put on and they'd do a good job of helping support the extra weight from a brush guard and winch. I've added a link to a video review and installation of these springs for you to take a look at.
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    Hey Edward! As long as you've got the understanding that the SumoSprings Solo Custom Helper Springs # SS66RR aren't a confirmed fit for your 2018 Suburban, I have no problems with you trying it out. Worst case is you try them out and they don't fit. I will say that the correct front suspension enhancement for your Suburban is the Timbren Kit # TGMFK15B, so it's what I recommend using instead of the SumoSprings. If you end up going with the SumoSprings I'd love to hear what you find out!
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  • Will Timbren Front Axle Spring Kit # TGMFK15B Fit with Leveling Kit on 2010 Chevrolet Suburban 1500
    Thank you for providing a photo of the front suspension of your 2010 Chevrolet Suburban 1500 4WD for which you want a front-axle Timbren kit for use with a snow plow. Please note that the kit you referenced, Timbren # TGMFK15B, is indeed a correct fit for your 2010 Chevrolet Suburban 1500 LS 4WD. You can take a look at the linked installation instructions for this kit to see how and where it installs on the vehicle. I also included a photo diagram that shows the installation in an exploded...
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    Image 1 for Image 2 for Image 3 for
  • Front Hitch, Motorcycle Carrier and Front-End Suspension Support Kit for 2017 Chevrolet Tahoe
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  • Front Suspension Enhancement For A 2022 GMC Yukon
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  • Front Suspension Enhancement For a 2008 Chevrolet Suburban LTZ
    It sounds like your 2008 Chevrolet Suburban is a 1500 series as I do not see that they made an LTZ trim on the 2500. The Coil SumoSprings Custom Helper Springs # CSS-1125F and Timbren Front Suspension Enhancement System # TGMFK15B are the 2 kits that we have for the front of your Suburban that are confirmed to fit. Both kits will work with the factory air ride and without bump stops. The SumoSprings # SSF-201-47 are only for the heavier 2500 chassis Suburban's. The Timbren # TGMFK15B...
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    The air shocks on your 2008 Cadillac Escalade only have the capacity for a certain amount of air and the compressor system on the vehicle is designed for that. If you add volume by installing additional air bags the system may not function properly or in a way that you want it to. Instead of using the air bags with the air shocks I recommend using Timbren helper springs, # TGMRYS4. With this system there is no maintenance and you will not have to worry about air compressors at all. It...
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    The Timbren Suspension Enhancement Systems can be a big help in situations like this where the factory suspension works fine, but it needs some help. The Timbren SES will spread the axle load out a bit more and lighten the load on the auto-leveling suspension system. They are also less expensive and much easier to install than other systems available. And since you will be presumably towing the same trailer and load each time, you do not need an adjustable air bag system. The rear axle...
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    Yes, the Timbren rear helper springs, # TGMRYS4, will fit your 2016 GMC Yukon XL 4x4. After installation, there is no maintenance and you will not have to worry about adding or removing air. If you are interested in a set for the front use # TGMFK15B. I have linked instructions and our Timbren help article for you.
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    The front-axle suspension kit you referenced, Firestone Level-Rite Air Helper Springs and Shock Absorber Kit F1003, is not a fit for your 2007 Yukon 2500. This kit fits the XL model. We do offer both front- and rear-axle suspension enhancement kits for your Yukon that can be seen on the provided link. You can use the filters on the page to select 2- or 4-wheel drive, the axle you wish to give some help to as well as the type of kit you prefer. Front-axle kits for your truck are limited...
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Info for this part was:

Employee Patrick B
Expert Research:
Patrick B
Employee Jeff D
Installed by:
Jeff D
Employee Robert C
Installed by:
Robert C
Employee Aidan B
Installed by:
Aidan B
Employee Jacob T
Video Edited:
Jacob T
Employee Mary K
Updated by:
Mary K
Employee Wilson B
Updated by:
Wilson B
Employee Michael B
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Michael B
Employee Carrie F
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Carrie F
Employee Lincoln B
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Lincoln B
Employee Jonathan Y
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Jonathan Y
Employee John S
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