DBA 5000 Series flat discs are designed specifically to replace just the rotor ring in DBA and other popular two-piece rotor configurations. They are available in multiple slot, drill, and dimple designs and various vent designs as well.
T3 5000 Series - T-Slot Uni-Directional Slotted Replacement Rotor
DBA 05-10 Ford Mustang GT Front 5000 Series Slotted Ring
T3 5000 Series, Slotted Rep Rotor
T3 5000 Repl Rotor
Disc Brake Rotor