R1 Concepts 623-46034R RNC Series Drilled Disc Brake Rotor

The R1 Concepts 623-46034R RNC Series Drilled Brake Rotor is a high-performance, cross-drilled disc brake rotor engineered for drivers who demand superior stopping power and thermal management. Manufactured from premium G3000 grade cast iron, this rotor delivers consistent, fade-resistant braking performance under both everyday driving and spirited conditions.

R1 Concepts' RNC Series rotors feature strategically placed cross-drilled holes that serve a dual purpose: venting heat away from the rotor surface during hard braking and helping to expel gas and debris from between the pad and rotor contact area. A silver zinc dichromate coating is applied to the hat and non-braking surfaces to resist corrosion and maintain a clean, finished appearance behind your wheels.

Key Features:

• Cross-Drilled Design — Improves heat dissipation and reduces brake fade under demanding conditions
• G3000 Grade Cast Iron Construction — Meets or exceeds OEM material standards for strength and longevity
• Silver Zinc Dichromate Coating — Protects the hat and vane areas from rust and corrosion
• Precision Machined — Computer-balanced and machined to tight tolerances for smooth, vibration-free braking
• Direct OEM Replacement Fit — Bolt-on installation with no modification required
• Vented Construction — Internal vane design promotes airflow for continuous cooling

The R1 Concepts 623-46034R is a direct-fit replacement rotor designed to restore and enhance braking performance. It is compatible with OEM calipers and brake pads, and is also an excellent pairing with R1 Concepts' own brake pad lines for a complete performance brake system upgrade.