Fabtech’s world-renowned IFS suspension system for the GM 3500HD is engineered to deliver exceptional control, strength, and ride quality for both on-road driving and demanding offroad conditions. Precision suspension geometry eliminates bump steer throughout the entire suspension cycle, significantly reducing driver fatigue while improving overall handling and vehicle stability.
The near stock track width keeps the tires properly positioned under the fenders for a clean, factory-style appearance. Fabtech’s proprietary steering knuckle geometry enhances lock-to-lock turning radius, allowing confident maneuverability in tight spaces without compromising highway performance.
Heavy duty 1/4″ thick steel crossmembers feature eccentric-style alignment cams for straightforward adjustments 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’s top-of-the-line Dirt Logic 2.25 shocks, constructed with stainless steel bodies and NitroSteel® piston rods for maximum corrosion resistance and durability. These premium shocks deliver outstanding ride comfort on the highway while providing excellent damping and control in offroad terrain. Every component is designed 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 peace of mind.









