2 piece forged contoured center disc Available in diameters 20-22 inch (19″ Late availability) Widths range from 4.0 – 14.00 inch 50/50, exposed or hidden ARP hardware option Available ARP titanium hardware option Engineered to be lightweight Vehicle load / G.A.W.R. specific 6061-T6 heat treated forged aluminum Engineered, machined, finished and assembled in the U.S.A.