R1 Concepts 623-01005L RNC Drilled Brake Rotor - Left

The R1 Concepts 623-01005L is a cross-drilled disc brake rotor from R1 Concepts' RNC performance line. Engineered to deliver consistent, fade-resistant stopping power, this left-side rotor is a direct OEM-replacement upgrade designed for street and light performance driving applications.

Constructed from G3000 grade cast iron, the rotor provides excellent thermal stability and wear resistance. The cross-drilled hole pattern promotes airflow across the rotor face, helping to dissipate heat buildup during repeated braking, while also helping to evacuate gases and debris from the pad-to-rotor contact surface for more consistent bite.

Key Features:

• Cross-Drilled Design — Enhances heat dissipation and reduces brake fade during aggressive or frequent braking
• G3000 Grade Cast Iron Construction — Meets or exceeds OEM material standards for strength and longevity
• Silver Zinc Dichromate Coating — Protects the rotor hat and non-swept surfaces from rust and corrosion
• OEM Dimensional Specifications — Direct bolt-on fitment; no modifications required
• Left Side (Driver Side) Application — Part suffix "L" denotes left/driver-side position
• Vented Design — Internal vane structure improves airflow for thermal management

The R1 Concepts RNC drilled rotor is a reliable upgrade over worn OEM rotors, delivering improved stopping performance and a cleaner appearance behind the wheel. Recommended for daily driving, light towing, and street performance use.