SuperPro TRC6640 Fixed Offset Upper Control Arm SetSuperPro TRC6640 Fixed Offset Upper Control Arm Set Fixed Offset Arms fitted with Uprated Ball Joints and SuperPro Bushes to reduce Arm movement SuperPro's fixed offset UCA set brings front end alignment and suspension geometry back into an ideal spec for Rams lifted 2" to 4" over stock. Measured at a 3" lift from stock the SuperPro TRC6640 kit delivers 0. 5 camber and +4. 0 caster when paired with the OEM lower control arm. Utilizing maintenance free