R1 Concepts 623-27052L RNC Series Drilled Brake Rotor Left

The R1 Concepts 623-27052L RNC Series Drilled Brake Rotor is a high-performance, cross-drilled disc brake rotor designed as a direct OEM replacement with enhanced stopping power and heat dissipation. Engineered for drivers who demand reliable performance on the street, this left-side (driver side) rotor features precision drilled holes that reduce brake fade and improve wet-weather braking by venting heat and gas buildup from the rotor surface.

R1 Concepts manufactures this rotor from premium G3000 gray iron casting, meeting or exceeding OEM specifications for thickness, runout, and metallurgical composition. The drilled pattern not only improves thermal performance but also reduces unsprung weight for improved handling response.

Key Features:

• Cross-Drilled Design: Precision-drilled holes dissipate heat and gas for reduced brake fade and consistent stopping power
• G3000 Gray Iron Casting: Premium material meets or exceeds OEM standards for durability and performance
• Direct OEM Replacement: Bolt-on fitment with no modifications required
• Left/Driver Side: Specifically designed and balanced for the left (driver) side application
• Geomet Coating: Corrosion-resistant protective coating on the hat and non-swept areas to prevent rust and extend rotor life
• Precision Balanced: Computer-balanced for smooth, vibration-free braking performance
• Vented Construction: Internal vane design promotes airflow for superior heat management

The R1 Concepts RNC series brake rotor is an excellent upgrade or replacement for drivers seeking improved braking performance over a standard OEM rotor. Designed for easy installation, this rotor pairs seamlessly with OEM or performance brake pads for a complete brake system refresh.