R1 Concepts 623-58017L RNC Series Drilled Brake Rotor

The R1 Concepts 623-58017L RNC Series Drilled Brake Rotor is a precision-engineered replacement disc brake rotor designed to deliver reliable, consistent stopping power. Built to meet or exceed OEM specifications, this rotor is a direct-fit replacement requiring no modifications for compatible vehicles.

The cross-drilled hole pattern is engineered to improve heat dissipation, reduce brake fade during repeated or heavy braking, and help channel away water, gas, and debris from the braking surface. This results in more responsive and consistent brake performance under a wide range of driving conditions.

Key Features:

• Cross-Drilled Design: Precision-drilled holes promote airflow and heat dissipation, reducing brake fade and improving wet-weather performance
• OEM-Spec Fitment: Engineered to factory specifications for a direct bolt-on installation with no modifications required
• Cast Iron Construction: Manufactured from high-grade cast iron for durability and long service life
• Balanced and Precision-Machined: Each rotor is balanced and machined to tight tolerances to minimize vibration and noise
• Left-Side Rotor: This part number (623-58017L) designates the left-side (driver's side) rotor position

R1 Concepts is a trusted name in aftermarket brake components, offering performance-oriented solutions for daily driving, street performance, light towing, and more. The 623-58017L is sold as a single rotor — confirm your application requires a single replacement before ordering.