R1 Concepts 623-20009L RNC Series Drilled Disc Brake Rotor - Left

The R1 Concepts 623-20009L RNC Series Drilled Brake Rotor is a direct-fit replacement disc rotor engineered to deliver reliable stopping performance and improved heat dissipation over standard OEM rotors. Designed as a left-side (driver-side) rotor, it integrates seamlessly into your existing brake system without modification.

The cross-drilled pattern is the defining feature of this rotor, providing multiple performance benefits over solid or plain rotors. The precision-drilled holes allow heat, gas, and moisture to escape the braking surface quickly, reducing brake fade during repeated or heavy stops. The result is more consistent pedal feel and improved rotor longevity.

Key Features:

• Cross-Drilled Design: Precision drilled holes promote rapid heat and gas evacuation, reducing brake fade and improving overall braking performance
• Direct OEM Replacement: Engineered to match factory specifications for a straightforward, no-modification installation
• Left-Side (Driver-Side) Application: Part number suffix "L" designates this as the left/driver-side rotor
• Corrosion-Resistant Coating: Silver zinc plating on non-braking surfaces protects the hat, hub, and vanes from rust and corrosion
• Quality Casting: Manufactured from high-quality grey iron for durability and consistent thermal performance
• Balanced Vane Design: Internal venting channels promote airflow through the rotor for continuous cooling during use

R1 Concepts is a dedicated brake specialist known for producing performance-oriented rotors and pads at competitive price points. The RNC Series is built to meet or exceed OEM stopping standards, making it a dependable upgrade or replacement for daily drivers and performance applications alike.