R1 Concepts 623-63017L RNC Series Cross-Drilled Brake Rotor - Left

The R1 Concepts 623-63017L RNC Series Drilled Brake Rotor is a precision-engineered, cross-drilled disc brake rotor designed as a direct OEM replacement with enhanced performance characteristics. Built to exacting tolerances, this left-side rotor delivers confident, fade-resistant stopping power for daily driving and light performance use.

Key Features:

• Cross-Drilled Design: Precision-drilled holes promote maximum heat dissipation, channeling heat away from the braking surface to reduce brake fade and extend pad life
• Countersunk Drill Holes: Holes are countersunk to minimize stress concentration at the edges, reducing the risk of rotor cracking under repeated thermal cycling
• G3000 Grade Cast Iron Construction: Manufactured from high-grade G3000 cast iron for optimal strength, durability, and consistent friction surface quality
• Zinc Coating: Protective zinc finish shields the rotor hat, vanes, and non-contact surfaces from corrosion, maintaining appearance and structural integrity over time
• Direct Fit OEM Replacement: Engineered to match OEM specifications for a straightforward, no-modification installation
• Left-Side Specific (Driver Side): Designed specifically for the left/driver-side position — sold individually

The R1 Concepts RNC Series drilled brake rotor is an ideal upgrade for drivers seeking improved thermal management and a cleaner aesthetic over a standard blank rotor, without sacrificing daily drivability. Always replace brake pads when installing new rotors and perform a proper bed-in procedure for optimal performance.