R1 Concepts 623-21052L RNC Cross-Drilled Brake Rotor - Left

The R1 Concepts 623-21052L RNC Brake Rotor is a precision-engineered, cross-drilled disc brake rotor designed as a direct-fit left-side (driver-side) replacement. Built to meet or exceed OEM performance standards, this rotor delivers reliable stopping power and improved thermal management for everyday driving and performance applications alike.

Key Features:

• Cross-Drilled Design: Strategically placed drill holes dissipate heat, reduce brake fade, and help expel gases and debris from the pad-to-rotor contact surface
• Direct OEM Replacement: Engineered to match original equipment specifications for a hassle-free, hardware-compatible installation
• Left-Side (Driver-Side) Fitment: Designed specifically for the driver-side position — verify fitment before ordering
• Corrosion-Resistant Coating: Silver zinc plating protects the rotor hat and vanes from rust and corrosion, extending service life and maintaining appearance
• Balanced Construction: Computer-balanced and precision-machined to minimize vibration, pulsation, and pedal feedback
• High-Carbon Iron Alloy: Premium iron formulation provides consistent bite, durability, and quiet operation

R1 Concepts rotors are manufactured to stringent quality standards and are a trusted choice for drivers seeking an upgrade over standard OEM rotors without sacrificing reliability. The 623-21052L is sold as a single rotor for the left/driver-side position. A break-in (bed-in) procedure is recommended upon installation to properly seat the brake pads and achieve optimal braking performance.