This premium 6″ lift kit for the 2020–2024 Chevy Silverado 3500HD and GMC Sierra 3500HD (4WD) is engineered to significantly improve off-road capability while maintaining a smooth, controlled ride on the highway. Designed to preserve the factory load-carrying capacity, it is ideal for truck owners who depend on their vehicle for towing, hauling, and heavy-duty workloads.
At the core of this system is Fabtech’s advanced RTS® design—an innovative bracket system that maintains the torsion bars in their original factory location while providing the necessary lift. By keeping the torsion bars high and protected, the kit maximizes ground clearance and prevents them from hanging low, snagging obstacles, or being damaged on rugged terrain. This design also results in a cleaner, more streamlined appearance under the vehicle.
The lift kit incorporates heavy-duty lower control arm crossmembers that feature arched bottoms for increased clearance. These crossmembers include a built-in skid plate that shields the front differential from rocks and off-road debris. Constructed from 1/4″ thick steel, the crossmembers and bracketry deliver exceptional structural strength and rigidity, ensuring long-term suspension durability.
Thanks to its thoughtful engineering and precise component fitment, the system installs efficiently with only four drilled holes and requires no cutting of the front differential housing. This reduces installation time and preserves the integrity of factory components.
Built with the highest-quality materials and designed for years of reliable service, this heavy-duty lift kit delivers improved ride quality, increased capability, and enhanced off-road performance for the GMC Sierra and Chevy Silverado 3500HD platforms.
CROSSMEMBERS
1/4″ thick steel lower control arm Crossmembers are arched for maximum ground clearance. The welded box design of these Crossmembers provides additional strength to the front suspension. Retains factory alignment cams for easy adjustment.
STEERING KNUCKLES
Fabtech’s extended length ductile iron Steering Knuckles provide zero bump steer throughout the suspension travel. This provides an enhanced driver experience compared to stock. Near stock track width keeps the tires under the fenders for a clean appearance.
TIE RODS
Oversized tie rods are provided to replace the stock units that are designed to handle oversized tires.
SKID PLATE
A heavy duty front differential Skid Plate is constructed of 1/4″ thick steel to protect the diff from offroad obstacles.
DIFFERENTIAL MOUNTS
Heavy duty Differential Mounts properly reposition the front diff for the precise CV and driveshaft angle to reduce driveline vibration at high speed.
SWAY BAR MOUNTS
Heavy duty mounts reposition the front sway bar for on road functionality and no bind for offroad use.
Front & REAR BUMP STOP SPACERS
Steel brackets relocate the 4 front and 2 rear compression stops to align with the factory closed cell bump stops to control the travel and eliminate over cycling of the suspension.
REAR LIFT BLOCKS
4″ tall rear lift blocks replace the factory blocks for additional lift without changing the ride quality or load carrying capacity. This block height helps level the truck front to rear.
REAR U-BOLTS
U-Bolts designed to attach the entire rear differential to the vehicle. A critical part that demands the best quality for your vehicle.
Dirt Logic 2.25 Shocks
The stainless steel body with NitroSteel piston rod provides maximum corrosion resistance and durability. High quality componentry delivers a superior ride quality both on and offroad. Excellent damping for offroad use.
