Fabtech 2019 GM K1500 3.5in Uniball UCA System - Component Box 1Fabtech's Upper Control Arm system provides a 3. 5 in. increased ride height over stock without creating suspension bind at full droop. Lift is accomplished with steel spacers that utilize the factory coilover shocks for a smooth ride. The heavy duty Uniball Upper Control Arms are constructed of the finest material with . 120 in. wall 1. 50 in. OD 4130 Chromoly tubing. High quality 1 in. FK Stainless PTFE lined Uniball bearings are utilized in place