SuperPro TRC6670 Fixed Offset Upper Control Arms for 2–4 Inch Lifted Vehicles (SKU: TRC6670) SuperPro TRC6670 fixed-offset UCAs enhance wheel alignment and control on lifted 4x4s. The TRC6670 combines heavy-duty, high-articulation ball joints with durable polyurethane bushings for confident, long-lasting performance. Features and Benefits Precision fixed-offset design improves alignment on lifted vehicles, reducing tire wear and enhancing overall performance. Heavy-duty, high-articulation ball joint enables greater suspension movement without binding for improved control over rough terrain. Constructed from high-strength steel forgings and tube steel; robot-welded for consistent, precise manufacturing and durability. Fitted with SuperPro polyurethane bushings for superior resilience and durability versus rubber; resistant to abrasion, wear, and chemicals. Optimized for vehicles lifted approximately 2 to 4 inches. Engineered for heavy-duty use in harsh off-road environments; SKU TRC6670. Designed, tested, and manufactured in Australia.