R1 Concepts 623-72045L RNC Series Drilled Disc Brake Rotor - Left

The R1 Concepts 623-72045L RNC Series Drilled Brake Rotor is a precision-engineered replacement disc brake rotor designed to deliver consistent, reliable stopping power. The "L" designation identifies this as the left (driver-side) rotor, sold as a single unit for targeted replacement or paired replacement applications.

Manufactured from G3000 grade cast iron, this rotor meets or exceeds OEM specifications for dimensional accuracy and thermal performance. The drilled hole pattern improves heat dissipation, helps evacuate brake dust and gases from the rotor face, and reduces overall rotor weight for a more responsive braking feel.

Key Features:

• Drilled Design – Cross-drilled holes promote ventilation and heat dissipation to reduce brake fade during demanding driving conditions
• G3000 Cast Iron Construction – High-quality metallurgy engineered to OEM tolerances for reliable, long-lasting performance
• Silver Zinc Plating – Corrosion-resistant coating protects the hat, hub, and vane structures from rust and oxidation
• OEM-Compatible Fitment – Direct bolt-on replacement with no modification required
• Left/Driver-Side Specific – Directionally correct geometry for proper pad contact and even wear
• Single Rotor – Sold individually; order the matching right-side rotor separately if replacing as a pair

The R1 Concepts RNC Series is ideal for drivers seeking an upgrade over worn OEM rotors without sacrificing daily-driver comfort or street reliability. Compatible with R1 Concepts ceramic and OEp brake pad formulations for a complete brake system refresh.