Standard 6" and F.I.T Performance Series 5"- 6" Replacement Knuckle Systems for 4WD Vehicles- Superlift® offers two different replacement knuckle systems. Both tout numerous new and unique performance-enhancing features. The systems were modeled using the most current computer design software, allowing our engineers to tweak each component for optimum performance, thus ensuring the absolute best lift products available for the 1/2-ton GM.

Superlift's replacement knuckle systems install quickly and easily. Also, the vehicle can be returned to stock later if desired. Superlift® offers three rear lift solutions for pickups while SUVs utilize replacement coils for rear lift. Three different shock options are offered.

The Standard Series system is designed to outperform the competition, and priced to be the value leader. Our premium Frame Integrated Technology (F.I.T.) Performance system has no peer... its bulletproof durability, and flawless function make the F.I.T. series system "best-in-class".