CIPA Optic LED Mirrors The Ford Super Duty is a line of commercial pickup trucks (over 8,500 lb (3,900 kg) GVWR) introduced in 1998 for the 1999 model year. The F-250 to F-550 Super Duties are assembled at the Kentucky Truck Assembly in Louisville, Kentucky. The F-650 and F-750 Super Duties are assembled at the Blue Diamond Truck plant in Mexico.