R1 Concepts 623-21031L RNC Series Drilled Brake Rotor - Left

The R1 Concepts 623-21031L RNC Series Drilled Brake Rotor is a precision-engineered replacement rotor designed to deliver consistent, reliable stopping power. Featuring a drilled rotor face, this rotor promotes improved heat dissipation, reduced brake fade, and enhanced wet-weather braking performance by allowing gases and moisture to escape from the rotor surface.

R1 Concepts manufactures this rotor to OE-equivalent specifications, ensuring a direct-fit replacement with no modification required. The rotor is constructed from high-quality grey iron and undergoes precise CNC machining for accurate thickness, runout tolerance, and surface finish — helping to eliminate vibration and pedal pulsation.

Key Features:

• Drilled rotor design for improved heat dissipation and reduced brake fade
• Enhanced wet-weather braking performance through improved gas and moisture venting
• CNC-machined for precise thickness and runout tolerances
• High-quality grey iron construction for durability and consistent performance
• Direct OE replacement fitment — no modifications required
• Left (driver) side fitment designation
• Corrosion-resistant coating on non-swept surfaces to resist rust during storage and shipping

The R1 Concepts RNC Series rotor is an excellent choice for drivers seeking a performance-oriented drilled rotor upgrade or a quality OE-style replacement. As with all brake components, professional installation is recommended to ensure proper torque specifications and brake system safety.