GMFW4C – Front Axle SES Suspension Upgrade

GMFW4C - Front Axle SES Suspension Upgrade

This SES Suspension Upgrade fits the front suspension of a GM medium & heavy duty trucks (see below for full list of applications). Each laser cut piece of steel is 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 – such as a steel bumper) 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 W3500 Tiltmaster
1998-2009
All Models
Chevrolet W3500 Truck
2008
All Models
Chevrolet W4500 Tiltmaster
1998-2010
All Models
Chevrolet W4500 Truck
2008
All Models
Chevrolet W5500 Tiltmaster
1998-2009
All Models Including HD
Chevrolet W5500 Truck
2008
All Models Including HD
GMC W3500 Forward
1998-2009
All Models
GMC W3500 Truck
2008
All Models
GMC W4500 Forward
1998-2010
All Models
GMC W4500 Truck
2008
All Models
GMC W5500 Forward
1998-2009
All Models Including HD
GMC W5500 Truck
2008
All Models Including HD
Isuzu F
1998-2010
All Models
Isuzu FSR
1988-1998
All Models
Isuzu N
1988-2014
All Models
Isuzu NPR
1988-2015
All Models
Isuzu NPR-HD
1999-2015
All Models
Isuzu NQR
1994-2015
All Models
Isuzu NRR
1988-2015
All Models
Isuzu Reach
2012
All Models
Sterling Truck 360
2007-2010
All Models

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