R1 Concepts 830-31102D DFC GeoPerformance Drilled and Slotted Brake Rotor

The R1 Concepts 830-31102D DFC GeoPerformance Drilled and Slotted Brake Rotor is engineered for drivers who demand enhanced stopping performance without sacrificing durability. Manufactured by Dynamic Friction Company (DFC) and sold under the R1 Concepts brand, this rotor combines cross-drilled holes, performance slots, and a premium GEOMET® corrosion-resistant coating into a single high-performance package.

Key Features:

• Cross-Drilled Holes: Reduce heat buildup on the rotor surface during hard braking; chamfered edges minimize the risk of cracking under stress
• Performance Slots: Clear brake dust, road debris, and gases from the pad contact surface, preventing pad glazing and improving bite — especially in wet conditions
• GEOMET® Corrosion-Resistant Coating: Applied to the entire rotor including the hub and vane structure, providing superior rust protection compared to standard zinc plating; processed dry and ready to install with no additional prep required
• OE-Matched Vane Configuration: Engineered to match the OE split-core vane layout for proper and maximum heat dissipation
• Precision Machined: Each rotor is machined to tight tolerances and passes a 100% electronic inspection measuring over 20 attributes to ensure OE-spec compliance
• Fine-Turned Finish: Rotors are finished to a maximum 1.6 RMS surface finish for improved initial pad bed-in and smoother, quieter stops

The 830-series prefix in the DFC part numbering system designates a drilled, slotted, and GEOMET-coated rotor — a step up from standard zinc or uncoated variants. This rotor is a direct OE replacement designed for street performance, daily driving, and light spirited use.