GMFTK – Front Axle SES Suspension Upgrade

GMFTK - Front Axle SES Suspension Upgrade

This SES Suspension Upgrade fits the front suspension of most GMC Kodiak Topkick trucks (see below for full list of applications). Each laser cut piece of steel is precision bent and powder-coated to ensure a quality fit. We’ve engineered our hollow rubber springs to deliver a progressive spring rate. In other words, the more weight that pushes down on the rubber springs (weight from a snowplow or heavy aftermarket accessories) the harder they work to prevent front-end sag.

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Product Features

  • Eliminate Vehicle Squatting & Sagging
  • Cushion Road Shocks
  • Improve Handling
  • Satisfaction Guarantee
  • Lifetime Warranty

Customer Reviews


"The Timbren system is the answer for rear end sag and soft handling! My 35ft 5th wheel handles much better, and I recommend Timbren without reservation."

- Larry V. - SD

“Timbren's work amazing! Absolutely as good or even better than air bags! Did it myself and only had time to drink 2 beer doing it! Easy install. Thanks for the advice. Simple yet very effective.”

Jonny K - NB

Fitment Checklist


Chevrolet C4500 Kodiak
2003-2009
2/4WD All Models Except LoPro
Chevrolet C5500 Kodiak
2003-2009
2/4WD All Models Except LoPro
Chevrolet C60
1997-2002
2/4WD All Models Except LoPro
Chevrolet C6500 Kodiak
2003-2009
2/4WD All Models Except LoPro
Chevrolet C7500 Kodiak
2003-2009
2/4WD All Models Except LoPro
Chevrolet T5500
1997-2009
2/4WD All Models Except LoPro
Chevrolet T6500
1997-2009
2/4WD All Models Except LoPro
Chevrolet T7500
1997-2009
2/4WD All Models Except LoPro
Chevrolet T8500
1997-2009
2/4WD All Models Except LoPro
GMC C6500 Topkick
2003-2009
2/4WD All Models Except LoPro
GMC C7500 Topkick
2003-2009
2/4WD All Models Except LoPro
GMC T5500
1997-2009
2/4WD All Models Except LoPro
GMC T6500
1997-2009
2/4WD All Models Except LoPro
GMC T7500
1997-2009
2/4WD All Models Except LoPro
GMC T8500
1997-2009
2/4WD All Models Except LoPro
GMC Topkick
2003-2009
2/4WD All Models Except LoPro
Isuzu FRR
1997-2010
2/4WD
Isuzu FTR
1997-2010
2/4WD
Isuzu FVR
1997-2010
2/4WD

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