DBA DBA52830.1S Series slotted Brake Disc Ring - 5000 T3

The DBA DBA52830.1S is a 5000 Series T3 slotted brake disc ring — the replacement outer friction ring designed for use with DBA's two-piece composite brake rotor system. This ring allows drivers to replace only the worn rotor ring while retaining their existing DBA 5000 Series aluminum hat, delivering a cost-effective upgrade path without sacrificing performance.

Built from high carbon cast iron, this disc ring is engineered to deliver consistent, fade-resistant braking performance under the most demanding conditions. The 5000 Series brings all the advanced performance technology of DBA's 4000 Series rotors while adding the benefits of a two-piece design — reduced unsprung weight and superior heat management.

Key Features:

• T3 Bi-Directional Slotting: DBA's patented non-directional slot pattern continuously sweeps brake pad friction dust and gases from the rotor face for a cleaner, more responsive pedal feel
• High Carbon Cast Iron Ring: XG-150 grey iron construction delivers improved thermal capacity and fatigue resistance over standard iron formulations
• Thermal Stability Profiling (TSP): DBA's proprietary heat treatment process subjects the iron to controlled temperature cycles to relieve manufacturing stresses, maximizing dimensional stability and reducing metal fatigue
• Kangaroo Paw Ventilation: Center-split core castings increase internal airflow for enhanced heat transfer and thermal efficiency
• CBN Machine Finish: Cubic Boron Nitride turning delivers a precision surface finish that minimizes disc thickness variation (DTV) and reduces the risk of pad knock and premature wear
• Two-Piece Replacement Ring: Sold as the disc ring only (hat not included); compatible with existing DBA 5000 Series aluminum hats
• Thermo-Graphic Heat Paint (TGHP): Visual heat indicator markings help verify proper rotor bedding and heat cycling during initial break-in

DBA recommends the 5000 Series for high-performance street driving, track days, club racing, and rally applications. DBA (Disc Brakes Australia) brings over four decades of disc rotor manufacturing expertise to every product, making the 5000 Series T3 a trusted choice for performance enthusiasts worldwide.