SuperPro Fixed Offset Upper Control Arms – Part Number: TRC6750 Upgrade your 4WD with the TRC6750 Fixed Offset Upper Control Arm (UCA), engineered to solve alignment issues, gain extra clearance, and enhance handling for vehicles with 1 to 3 inch lifts. Features and Benefits The TRC6750 is a high-performance aftermarket component designed to correct suspension geometry changes caused by lifting a vehicle, reducing tire wear and improving overall off-road performance. This UCA is specifically designed to suit models with Aluminium steering knuckles.