If you're on the hunt for 2-piece rotor upgrades that also feature the good-looks of a Gold Hat and CNC machined drilled-and-slotted pattern, the DBA's 5000 XS series is your best choice. The 3500 high carbon rotor rings are allowed to grow as the temperatures soar but remain true and perfect as the Aerospace (NAS) bolts and crimp nuts connects to the center hats.
Ideal for performance street use, the Aerospace grade (T6061-T6) gold aluminium centers (called hats) actually lower the rotational mass of the brake disc for both quicker acceleration and faster brake response. Reduced heat transfer from the rotors to the hubs and bearings via the aluminium hats is a "cool" and measurable benefit. - Sold each, so order a quantity of 2 for a complete matched set.