Fabtech’s world-renowned IFS suspension system for the GM 3500HD is engineered to deliver confident handling, long-term durability, and balanced performance for both on-road driving and offroad use. Precision suspension geometry eliminates bump steer throughout the entire suspension cycle, reducing driver fatigue while significantly improving steering control and overall drivability.
The near stock track width maintains a clean, factory-style appearance by keeping the tires properly positioned under the fenders. Fabtech’s proprietary steering knuckle geometry enhances lock-to-lock turning radius, allowing improved maneuverability in tight spaces without sacrificing highway stability.
Heavy duty 1/4″ thick steel crossmembers are designed with eccentric-style alignment cams for easy adjustment and long-term reliability. Triple front differential mounts precisely reposition the differential to maintain correct CV and driveshaft angles, ensuring smooth, vibration-free 4WD operation even at higher speeds.
This suspension system is equipped with Fabtech Stealth monotube shocks that deliver a smooth, controlled highway ride while offering excellent damping for offroad terrain. Every component is engineered to work together to provide proper wheel travel, precise steering response, and dependable performance. The system is backed by a free 5 year 60,000 mile Powertrain Warranty for added confidence.









