DBA DBA5040.1 5000 Series HD Brake Disc Ring 296mm

The DBA DBA5040.1 is a 296mm x 28mm replacement brake disc ring for DBA's 5000 Series two-piece rotor system. Featuring a smooth OE-style rotor 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 patterns — making it ideal for drivers who want performance rotor benefits with a clean, factory-style appearance.

As a standalone replacement ring, the DBA5040.1 allows existing 5000 Series hat owners to replace only the cast iron rotor ring rather than the entire assembly, providing a more cost-effective upgrade path. Rings and complete assemblies are both available, giving flexibility for first-time buyers and returning customers alike.

Key Features:

• Two-Piece Design: Sold as an individual replacement ring, compatible with existing DBA 5000 Series aluminium hats
• High Carbon Cast Iron Ring: Formulated for optimal heat absorption and thermal capacity under sustained heavy braking
• Kangaroo Paw Vane Design: Proprietary internal venting geometry for up to 20% improved heat dissipation over conventional designs
• Thermal Stability Profiling (TSP): Proprietary heat treatment process that realigns the microstructure of the iron, reducing internal stress and improving long-term rotor stability and fatigue resistance
• Thermographic Heat Paint Markings: Standard factory markings that permanently change color at specific temperature thresholds, enabling easy monitoring of braking temperatures and rotor fatigue
• CBN Machine Finish: Cubic Boron Nitride turned surface minimizes disc thickness variation and reduces the risk of pad knock and premature wear
• Smooth OE-Style Surface: No slots, drill holes, or dimples — clean finish compatible with a wide range of brake pad compounds
• Rotor Diameter: 296mm (11.65 in)
• Rotor Thickness: 28mm (1.10 in)

When replacing rings only, DBA recommends thoroughly inspecting the aluminium hat for wear or damage and using DBA-spec NAS bolts and crimp nuts, torqued to 13 Nm (9.6 ft-lb). The 5000 Series is recommended for high-performance street vehicles, track day and club racing, rally applications, and heavily loaded towing vehicles.