R1 Concepts 623-03032L RNC Series Drilled Brake Rotor

The R1 Concepts 623-03032L RNC Series Drilled Brake Rotor is a high-performance replacement rotor engineered for improved stopping power and thermal management. Precision-machined from premium G3000 grade cast iron, this rotor delivers consistent, fade-resistant braking performance in both everyday driving and spirited applications.

Key Features:

• Drilled Design: Cross-drilled holes promote rapid heat dissipation, reducing brake fade and extending pad life
• G3000 Cast Iron Construction: OEM-grade metallurgy ensures durability, even wear, and quiet operation
• Precision Machined: CNC-machined to tight tolerances for minimal runout and proper fitment
• Corrosion-Resistant Finish: Zinc or e-coating on non-friction surfaces protects against rust and corrosion
• Direct-Fit Replacement: Designed as a drop-in replacement for the original equipment rotor — no modifications required
• Balanced for Smooth Operation: Each rotor is tested for balance and runout to eliminate vibration and pedal pulsation

The R1 Concepts RNC (Race-N-Street Concepts) line is purpose-built for drivers who demand more than a standard OE replacement. The drilled pattern improves wet-weather braking by channeling water away from the rotor surface, while also contributing to a performance aesthetic. This rotor installs on the left (driver) side as indicated by the -L suffix in the part number.