R1 Concepts 623-26004L RNC Drilled Brake Rotor - Left

The R1 Concepts 623-26004L RNC Drilled Brake Rotor is a high-performance, direct-fit replacement disc brake rotor engineered to deliver confident stopping power and improved thermal management over a standard OEM rotor. Designed as a single left/driver-side rotor, it is built to OEM specifications for a no-modification installation.

Key Features:

• Precision-Drilled Holes: Countersunk drill pattern maximizes heat dissipation and reduces the risk of thermal cracking, allowing hot gases and debris to evacuate the rotor surface efficiently
• G3000 Grade Cast Iron Construction: Premium-grade cast iron provides the structural integrity and thermal capacity needed for consistent, fade-resistant braking performance
• Zinc Corrosion Coating: Silver zinc plated finish protects the non-braking surfaces from rust and corrosion, extending rotor service life and maintaining a clean appearance behind the wheel
• OEM Direct Fit: Engineered to match original equipment dimensions and mounting specifications — no drilling, cutting, or modification required
• Vented Design: Internal vane structure promotes continuous airflow through the rotor to keep operating temperatures in check during demanding stops
• Left/Driver-Side Application: This is a single rotor intended for the left (driver) side; sold individually

The R1 Concepts RNC series is designed for drivers seeking a meaningful upgrade from a worn or stock rotor without stepping into a full performance kit. It pairs well with R1 Concepts' ceramic or OEp brake pad lines for a complete brake refresh. Always follow a proper bed-in procedure after installation to ensure optimal pad transfer and rotor performance.