SuperPro Complete Upper Control Arm Kit – TRC491 SuperPro TRC491 is a complete upper control arm kit for 4WDs, delivering a durable, high-strength replacement that enhances handling and solves alignment issues when lifted. Includes pre-installed SuperPro bushings and upgraded ball joints. Features and Benefits SKU: TRC491 – Complete upper control arm kit for 4WD applications Two complete arm assemblies All SuperPro bushings pre-installed Re-designed and up-rated ball joints Standard configuration Enhances your 4WD's handling and performance Designed to solve alignment issues when you lift your 4WD Approved Nationally – VSB 14 Compliant (ADR compliant) High quality, form factor welding and assembly High grade steel for increased strength Built to meet SuperPro's high quality requirements; designed to outperform both competitor and OE products ("Engineered to Outperform").