DBA DBA52858.1XS 5000 Series XS Cross-Drilled & Slotted Brake Rotor Ring with NAS Nuts

The DBA DBA52858.1XS is a 5000 Series XS replacement brake rotor ring featuring a cross-drilled and slotted surface finish. Designed as a flat disc replacement for DBA's two-piece rotor system, this ring allows you to refresh your braking setup without replacing the entire assembly — simply swap the worn ring onto your existing DBA aluminum hat.

Key Features:

• Cross-Drilled & Slotted (XS) Surface: Aggressive XS pattern combines cross-drilling with slots for maximum gas and heat evacuation, improved bite, and consistent wet-weather performance
• Two-Piece Replacement Ring: Designed to replace only the outer rotor ring in DBA and compatible two-piece rotor configurations, reducing replacement cost
• High-Carbon Cast Iron Construction: Rotor ring is cast from high-carbon iron for superior durability, fade resistance, and thermal stability under demanding conditions
• NAS Replacement Nuts Included: Comes with National Aerospace Standards (NAS) crimp nuts (KP kit) required for proper assembly to the aluminum hat
• Uniform Radial Expansion: Two-piece composite design allows the cast iron ring to expand radially without distorting the hub or hat, reducing vibration and warping
• Reduced Heat Transfer: Separation of the iron ring from the aluminum hat minimizes heat transfer to the hub and wheel bearing assembly
• Track & Performance Street Ready: Recommended by DBA for high-performance street driving, track days, club racing, and rally applications

The DBA 5000 Series shares all the performance technology of the proven 4000 Series, adding the benefits of a lightweight aerospace-grade aluminum hat and improved heat management. This listing is for the replacement flat disc (rotor ring) only — the aluminum hat is sold separately. Includes replacement NAS nuts for reassembly.