Trailing Arm - Upper Adjustable Kit (80 duro/ShA) — TRC1138 TRC1138 is an off-car adjustable upper trailing arm kit that corrects pinion angle for off-road use and elevates handling performance. Features and Benefits Off-car adjustable design for precise pinion angle correction in off-road applications. Easy, direct-fit replacement upgrade that enhances your vehicle's handling and performance. Upgraded arm design and construction with pre-installed Hybrid SuperPro bushings (80 duro/ShA). Eliminates undesirable arm movement to maintain better steering geometry and alignment. Designed, tested and engineered in Australia; built to outperform OE and competitor products. Polyurethane-focused benefits: no NVH increase, strong material memory, and excellent abrasion resistance that outperforms rubber. SKU TRC1138: an easy-to-install replacement/upgrade solution for confident performance.