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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
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1981 Chrysler LeBaron
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

1981 Chrysler LeBaron

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etrailer Installation
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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 (770)
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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




Customer Satisfaction Score:

Ratings & Reviews

4.7

770 reviews
5 Stars
(616)
4 Stars
(109)
3 Stars
(15)
2 Stars
(6)
1 Star
(24)
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by:
2007 Chevrolet Avalanche
On time; on target
by:
by:
Great ordering, shipping time, cost, and supporting information. We added a snow plow and the product did everything as advertised.
Kate F. profile picture
Etrailer Expert

Kate F.

3/26/2026

Glad we had the right fit for you Tom! Where are you located, and how much snow did you get this last season?

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..
Heather A. profile picture
Etrailer Expert

Heather A.

5/8/2026

I hear you, and that makes sense based on what you’re describing. If the Timbrens are in constant contact, they’re basically always engaged, which is why the front end feels so stiff instead of only firming up under load. You might actually be a really good candidate for SumoSprings part # SSF-281-47 (as long as your truck is a 2WD) They’re a similar concept but made from a softer, more progressive material, so they compress more gradually instead of feeling like a hard stop. That usually gives you support when you need it without taking away all the ride comfort like you’re experiencing now. Glad to hear the install went smoothly and the quality was there, that’s pretty typical with Timbren, it just comes down to how they behave on your specific setup. What were you mainly trying to improve up front, sag, handling, or just a smoother ride overall?

Jess profile picture

Jess

5/8/2026

@HeatherA I wanted to improve the ride. Im guessing there is sag i was unaware of. I expected the timbren to be a bit more progressive in it softness?? I didn't think the rubber would be in direct contact withe the spring 100% of the time. I only have 56,000 on this truck. So little use but 20 years old. Next weekend we take it for a 300 mile trip and ill determine if there going to be removed or not. Is there a return policy if satisfactory performance is not met?
by:
2017 Chevrolet Silverado 2500
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:
2006 Winnebago Sightseer Motorhome
For me surprisingly easy to install at 67 years old. Had immediate handling improvement and steering control.
Nick S. profile picture
Etrailer Expert

Nick S.

11/10/2025

That is great to hear! I am glad you were able to feel the difference right away. I am happy to hear that you were able to get them installed easily as well.

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:
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:
1998 Chevrolet Blazer
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:
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
Brooke M. profile picture
Etrailer Expert

Brooke M.

7/9/2025

Happy to hear that, Dan! Thank you for sharing all the photos, too. What are you towing now that you have a some extra suspension support?

Dan G. profile picture

Dan G.

7/9/2025

We tow either a Honda Pilot or SantaFe on a tow dolly
Brooke M. profile picture
Etrailer Expert

Brooke M.

7/11/2025

@DanG Ooo nice! Been on any trips recently?
by:
2023 Ford Transit Connect
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:
2022 Ford E-Series Cutaway
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:
I watched installation videos for my FFF 53 Timbren suspension parts three times to familiarize myself with what I was going to be doing. This did help. I would say you need a little bit of experience in working on cars or trucks. This is a straightforward job with no fabricating needed. The hardware was correct. The instructions were correct. The parts fit great. I did this installation by myself. Another set of hands wouldn’t hurt but not necessary. If you’re on the fence on buying parts from Timbren, I would say go ahead and place your order.
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:
Nissan Leaf
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:
2008 Winnebago Vista Motorhome
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
Scott profile picture

Scott

3/23/2026

Still working fine, the truck’s suspension has settled now the the ride is even bettet

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).
Bobby L. profile picture

Bobby L.

5/10/2020

The timbren springs are working out better than expected. I installled new Monroe matic RV shocks front and rear on my 2006 Chevy Silverado 1500 just prior to putting the timbrens on the front and the sumo springs on the rear and the ride is great especially with a load or hauling my travel trailer and the ride is just as smooth empty. I highly recommend the timbren and sumo springs because they fit by application and there is nothing additional to buy. Thanks etrailer.

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
Jeffery profile picture

Jeffery

8/4/2023

I have upgraded towards trailing with my truck camper Artic Fox 990. I have not had the time to reach to etrailer for a solution with my 1998 Dodge 2500 timbrens installation. I have a new addition and will install the timbrens on a F-550 to have the same travel assurance...Pre trip test run to Key West early this winter... Anchorage 2024 Spring...Thank you etrailer

by:
Have them on several trucks now and couldn't imagine running snow plows without anymore.
by:
The front Timbren are working very good.The rear not so good
by:
2010 Dodge Ram Pickup
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.
Ron H. profile picture

Ron H.

5/24/2020

Working GREAT!!!!

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.
Gabriel profile picture

Gabriel

2/23/2026

Still going strong. The ride is a little bumpy but when I tow the truck doesn’t feel “squishy” whenever I make my turns. I’m still super happy about the product.

by:
A+++ Excellent product and customer service. Bought both front and rear suspension enhancements and worth it. Highly recommend.
Samuel profile picture

Samuel

11/28/2025

Great product. Very solid and holding up well in my motorhome. My friend has sumo springs and they have a softer ride, but they had to be replaced after a few years, due to his weight distribution. Mt Timbrens seem much stronger. A little bit firmer ride, but the shocks balance that out. I would buy them again.

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.
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See what our Experts say about this Timbren Vehicle Suspension

  • Is it Okay to Use SumoSprings Solo Custom Helper Springs on a 2018 Chevy Suburban?
    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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  • Installation of SumoSprings Custom Helper Springs on 2012 Chevy Suburban
    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.
    view full answer...
  • 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...
    view full answer...
    Image 1 for Image 2 for Image 3 for
  • Front Hitch, Motorcycle Carrier and Front-End Suspension Support Kit for 2017 Chevrolet Tahoe
    Transporting a dirt bike on a front-hitch-mounted motorcycle carrier is a good option when you also need to tow a trailer. The key is making sure the hitch and carrier both are rated appropriately for the load. Both front-mount hitches we have for your 2017 Tahoe, Draw-Tite # 65064 and Curt # C31073, share a 500-lb vertical load rating (same as tongue weight). This means that the combined weight of the bike and carrier must remain within this hitch capacity. You can see all hitch motorcycle...
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  • Front Suspension Enhancement For A 2022 GMC Yukon
    Yes, we have an option for your 2022 GMC Yukon. The Timbren Front Suspension Enhancement System # TGMFK15B will fit all models of your GMC Yukon, requires no drilling, and will replace your axles bump stops. This system has a maximum capacity of 14,000lbs, and will provide a comfortable ride by absorbing road shock and improving roll stability.
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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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  • Can Air Bag Helper Springs be Tied Into Air Shock Compressor on a 2008 Cadillac Escalade
    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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  • Will the Timbren Suspension Enhancement System Help Level my 2006 Buick Rainier When Towing
    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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  • Helper Springs for a 2016 GMC Yukon XL 4-Wheel Drive
    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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  • Will Firestone Level-Rite Air Helper Springs and Shock Absorber Kit F1003 Fit 2007 Yukon 2500
    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:

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