R1 Concepts 623-11008L RNC Series Drilled Brake Rotor - Left

The R1 Concepts 623-11008L is a drilled brake rotor from the RNC (Race-Grade Non-Coated) Series, designed as a direct-fit replacement for vehicles requiring a high-performance upgrade over the stock rotor. This is the left-side rotor, identified by the "L" suffix in the part number.

R1 Concepts drilled rotors are precision-machined from high-carbon gray iron for superior heat dissipation and consistent braking performance. The drilled hole pattern increases airflow across the rotor face, helping to reduce brake fade during repeated or aggressive braking events. The vented internal vane design further promotes cooling for extended rotor life.

Key Features:

• Drilled hole pattern promotes airflow and reduces heat buildup and brake fade
• High-carbon gray iron construction for strength, durability, and improved thermal capacity
• Precision machined to OEM tolerances for a direct bolt-on fitment
• RNC Series — non-coated design suited for performance street and light track use
• Left-side application (driver or passenger side depending on vehicle; verify with fitment guide)
• Balanced and tested for minimal runout and vibration-free braking

The R1 Concepts 623-11008L is an excellent choice for drivers seeking improved braking response and rotor longevity over standard OEM replacements. Always replace rotors in axle pairs and inspect brake pads when installing new rotors.