DBA DBA52525.1S 5000 Series T3 Slotted Brake Disc Ring 320mm x 28mm

The DBA DBA52525.1S 5000 Series T3 Slotted Brake Disc Ring is a high-performance replacement rotor ring engineered for two-piece brake rotor assemblies. Measuring 320mm x 28mm and featuring DBA's patented T3 bi-directional slot pattern, this disc ring delivers consistent stopping power and superior heat management for demanding street, track, and rally applications.

Constructed from XG-150 high-carbon cast iron, the ring undergoes DBA's proprietary Thermal Stability Profiling (TSP) process — a series of controlled heat cycles that realign the microstructure of the iron, relieving internal manufacturing stresses to maximize thermal stability and minimize metal fatigue under extreme braking loads.

Key Features:

• T3 Bi-Directional Slot Pattern — Non-directional slotting clears gases, heat, and debris from the rotor surface, dampens vibrations for improved pedal feel, and eliminates the need for separate left/right rotors
• XG-150 High-Carbon Iron Ring — Specifically formulated alloy for superior heat absorption and dissipation compared to standard grey iron
• Kangaroo Paw Ventilation — DBA's patented system of teardrop-shaped pillars provides greater surface area and accelerated heat dissipation for cooler operating temperatures
• Thermal Stability Profiling (TSP) — Proprietary heat treatment process increases rotor stability, reduces fatigue, and minimizes surface cracking under prolonged heavy braking
• Thermographic Heat Paint (TGHP) — Color-changing paint markings on the rotor edge allow monitoring of peak braking temperatures and rotor fatigue in real time
• CBN Machine-Turned Finish — Cubic Boron Nitride machining minimizes disc thickness variation and reduces the potential for pad knock and premature wear
• Anti-Corrosion Coating — Premium paint applied to all non-friction surfaces for corrosion protection and enhanced appearance
• Replacement Ring Only — Compatible with existing DBA 5000 Series aluminum hats, allowing cost-effective ring replacement without replacing the full assembly

The 5000 Series T3 disc ring is recommended by DBA for high-performance street vehicles, track day and club racing, and rally applications. Sold individually.