SuperPro Fixed Offset Upper Control Arms – High-Articulation Ball Joints & Polyurethane Bushings – 1–3 inch Lift – TRC6540 Optimize alignment and articulation on your lifted 4x4 with SuperPro's fixed-offset upper control arms, TRC6540. Engineered for strength, precision, and durability with high-articulation ball joints and SuperPro polyurethane bushings. Features and Benefits Fixed-offset design corrects wheel alignment on 1–3 inch lifted vehicles, reducing tire wear and improving overall performance. Heavy-duty, high-articulation ball joint delivers greater suspension travel without binding for confident control over rough terrain. Constructed from high-strength steel forgings and tube steel; robot-welded for consistent, precise quality and long-term durability. SuperPro polyurethane bushings provide superior resilience with no increase in NVH, excellent material memory, and outstanding abrasion and chemical resistance. Outperforms traditional rubber bushings in durability and wear resistance—ideal for harsh off-road environments. Engineered for heavy-duty use to enhance handling, articulation, and reliability on lifted 4x4s. TRC6540 identification ensures you get the correct SuperPro fixed-offset UCA configuration.