Manufacturer: DBA (Disc Brakes Australia). Title: DBA Rear 5000 Series T3 Brake Rotor – DBA53929BLKS. 2020-2023 Chevrolet Corvette. Rear 5000 Series T3 Brake Rotor. We use only the highest quality materials to ensure optimal performance under the most strenuous circumstances combining high carbon cast iron rings with aerospace grade aluminium hats (T6061-T6) held together with National Aerospace Standards (NAS) bolts and crimp nuts.