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The Fabtech 3.5-inch Upper Control Arm Lift System for 2020 GM K2500HD/3500HD replaces factory upper control arms with .120 wall DOM arms and extended‑range ball joints to achieve a 3.5" lift. The system includes heavy‑duty steering knuckles to maintain ESC function, relocation of the front differential to preserve CV angles, bump stop extensions and brake hose relocation brackets for comprehensive front suspension compatibility.
Fabtech 2020 GM K2500HD/3500HD UCA 3.5in Lift System
