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 overall steering control and stability.
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 design enhances lock-to-lock turning radius, allowing improved maneuverability in tight spaces while preserving predictable highway manners.
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 Performance shocks, featuring extended-length twin tube construction that delivers a comfortable highway ride while maintaining the durability and damping control needed for offroad terrain. Every component is engineered to work together for proper wheel travel, accurate steering response, and dependable performance.
Backed by a free 5 year 60,000 mile Powertrain Warranty, this suspension system provides strength, confidence, and reliability for demanding work or recreation.









