DBA DBA5575.1 Series HD Two-Piece Brake Disc Ring - 5000

The DBA DBA5575.1 is a 5000 Series HD replacement brake disc ring designed for use with DBA's two-piece composite rotor system. The HD variant features a smooth, OE-style rotor surface finish — ideal for drivers who want the structural and thermal advantages of a two-piece rotor without slotted, cross-drilled, or dimpled surface treatments.

This replacement ring is sold individually and is compatible with existing DBA 5000 Series aluminium hats, offering a cost-effective way to refresh your braking system without replacing the entire rotor assembly.

Key Features:

• High Carbon Cast Iron Construction: Engineered for optimal interaction with DBA's Thermal Stability Profiling (TSP) process, delivering superior heat tolerance and extended rotor life
• Two-Piece Composite Design: Replacement outer ring pairs with the DBA Aluma-Lite aerospace-grade T6061-T6 aluminium hat, reducing unsprung weight for improved vehicle dynamics
• Smooth HD Surface Finish: OE-style rotor face with no slots or drill holes — clean appearance with full 5000 Series performance benefits
• Uniform Radial Expansion: The two-piece floating design allows the cast iron ring to expand radially during heat cycles, reducing the risk of warping and improving pad contact consistency
• Reduced Heat Transfer: Aluminium hat construction minimizes heat transfer from the disc ring to the wheel hub and bearing assembly
• NAS Hardware Compatible: Designed to bolt to DBA 5000 Series hats using National Aerospace Standards (NAS) bolts and crimp nuts (torque to 13 Nm / 9.6 ft-lb)
• Thermal Stability Profiling (TSP): Proprietary DBA heat treatment process that realigns the microstructure of the iron for increased rotor stability and durability
• Recommended Applications: High-performance street driving, track days, club racing, rally, and show vehicles

This disc ring is sold as an individual unit. Always inspect the existing aluminium hat for wear or damage before reuse, and replace NAS hardware as needed per DBA specifications.