R1 Concepts 623-20003L RNC Drilled Brake Rotor - Left

The R1 Concepts 623-20003L RNC Drilled Brake Rotor is a high-performance, direct-fit replacement rotor engineered for improved stopping power and heat dissipation. Designed as a left-side (driver side) application, this rotor is a direct OEM-style replacement that installs without modification.

R1 Concepts' RNC series rotors feature precision drilled holes across the rotor face, which serve to reduce heat buildup during heavy braking, expel gases and debris from the braking surface, and reduce overall unsprung weight. The result is more consistent brake pad contact, improved fade resistance, and enhanced wet-weather braking performance.

Key Features:

• Drilled rotor design promotes heat dissipation and prevents brake fade
• Left/driver-side fitment (as indicated by the "L" suffix in the part number)
• Direct OEM replacement — no modifications required for installation
• Precision machined for accurate rotor face runout and smooth, vibration-free braking
• Corrosion-resistant finish on non-friction surfaces for long-term durability
• Manufactured to meet or exceed OEM specifications

R1 Concepts is a trusted name in performance braking components, offering rotors engineered to provide reliable, repeatable stopping performance for both daily drivers and performance applications. The 623-20003L is sold individually as a single rotor.