DBA DBA52165.1S 5000 Series T3 Slotted Replacement Rotor Ring 330mm x 25mm

The DBA DBA52165.1S is a replacement rotor ring for DBA's 5000 Series T3 two-piece slotted brake rotor, measuring 330mm x 25mm. Designed as a direct drop-in replacement for the cast iron outer ring on existing DBA 5000 Series two-piece assemblies, this ring allows owners to refresh their braking system without replacing the full rotor and hat assembly.

Key Features:

• XG-150 High Carbon Alloy Iron construction for superior thermal resistance and durability under repeated heavy braking cycles
• T3 Bi-Directional Slot Design — DBA's patented tri-symmetrical slotting pattern clears friction dust and gases for consistent pad bite and a responsive pedal feel
• Thermal Stability Profiling (TSP) — DBA's proprietary heat treatment process subjects the iron to controlled thermal cycles, relieving internal stresses and maximizing rotor stability and fatigue resistance
• Thermo-Graphic Heat Paint (TGHP) — factory-applied color-coded paint stripes (Green, Orange, Red) change color at predetermined temperature thresholds, enabling real-time brake temperature monitoring
• CBN Machine-Turned Finish — Cubic Boron Nitride machining minimizes disc thickness variation for reduced pad knock and premature wear
• NAS Hardware Compatible — designed to mate with National Aerospace Standard (NAS) bolts and crimp nuts used in DBA's 5000 Series two-piece hat assemblies
• 330mm diameter × 25mm thickness
• Sold individually (single rotor ring)

DBA's 5000 Series is recommended for high-performance street driving, track days, club racing, and rally applications where superior heat management and longevity are critical. The .1S suffix denotes this is the replacement slotted ring only — the aluminum hat is retained from the existing assembly, making this an economical way to restore full braking performance.