DBA DBA52218.1 Series HD Two-Piece Brake Disc Ring - 5000

The DBA DBA52218.1 5000 Series HD Brake Disc Ring is a high-performance replacement rotor ring engineered for DBA's two-piece composite brake rotor system. Featuring a smooth OE-style finish, the 5000 Series HD variant delivers all the structural and thermal advantages of the 5000 Series platform without slotted, cross-drilled, or dimpled surface designs — making it an ideal choice for drivers who demand premium two-piece rotor performance with a clean factory look.

Constructed from high-carbon cast iron, this disc ring is precision-machined to pair with DBA's T6061-T6 aerospace-grade aluminum rotor hats, which are secured using National Aerospace Standards (NAS) bolts and crimp nuts. This two-piece construction allows for uniform radial disc expansion across the ring while significantly reducing heat transfer from the disc to the wheel hub.

Key Features:

• Smooth OE-style finish — no slots, cross-drilling, or dimples
• High-carbon cast iron construction for superior heat resistance and durability
• Compatible with DBA 5000 Series aerospace-grade aluminum hats (T6061-T6)
• Two-piece design reduces unsprung weight for improved vehicle handling and braking response
• Allows uniform radial disc expansion for consistent performance under high heat
• Fastened with National Aerospace Standards (NAS) bolts and crimp nuts
• DBA's Thermal Stability Profiling (TSP) heat treatment realigns the iron microstructure for increased rotor stability and longevity
• Sold individually — replacement disc ring only; hat sold separately

This disc ring is designed for drivers who already own DBA 5000 Series rotor hats and need to replace only the cast iron ring, making it a cost-effective maintenance solution. DBA recommends a torque specification of 13 Nm (9.6 ft-lb) when reinstalling the NAS nut and bolt assembly. Ideal for high-performance street driving, track days, club racing, and rally applications.