2011-2019 GM 2500/3500HD Xtreme-Duty Fabricated Upper Control Arms Correct ball joint pivot angle for lifted or leveled applications. Tab and slot boxed 4130 chromoly plate steel design increases overall strength and durability. Stronger and longer lasting outer and inner pivots. New Heavy-Duty spring loaded ball joint for maximum long-lasting durability! New ReadyLIFT TCT (Terrain Control Technology) pivots are maintenance free and self lubricating. TCT pivots include a new "free float" inner bushing with "side biter" washers. Includes a CNC machined billet aluminum cover cap to protect the ball joint from road debris. Can be used on 2011-2019 MY GM 2500/3500HD lifted trucks with 2"-8" of front lift from qualified ReadyLIFT lift kits. NOT FOR USE ON STOCK RIDE HEIGHT TRUCKS or 5-6" lift kits 44-3050 or 44-3052 . Tough Anthracite Gray powder coat Durable Grade 8 hardware. No major modifications required to install.