R1 Concepts 623-72038L RNC Series Cross-Drilled Brake Rotor - Left

The R1 Concepts 623-72038L is a cross-drilled performance brake rotor from R1 Concepts' RNC Series, engineered as a direct-fit replacement upgrade for drivers seeking improved braking performance over stock rotors. The "L" designation identifies this as the driver-side (left) rotor.

R1 Concepts rotors are manufactured to OEM specifications, ensuring a no-modification, bolt-on installation. The cross-drilled hole pattern improves heat dissipation, helps evacuate gases and debris from the braking surface, and reduces the potential for brake fade during repeated or hard stops. A silver zinc plated coating is applied to non-friction surfaces to protect against rust and corrosion, extending the service life and maintaining a clean appearance behind the wheel.

Key Features:

• Cross-Drilled Design – Enhances ventilation and heat dissipation for consistent stopping performance
• Chamfered Drill Holes – Countersunk design reduces the risk of cracking under stress
• Silver Zinc Plated Coating – Corrosion-resistant finish on hub and vane areas for improved longevity
• G3000 Grade Cast Iron Construction – OEM-grade material for durability and long service life
• Direct-Fit Replacement – Built to OEM dimensions; no modification required for installation
• Left / Driver-Side – Sold individually; verify your application for correct side fitment

The R1 Concepts RNC Series rotor is well-suited for daily driving, street performance, and light towing or hauling. It is designed to work with a wide range of brake pad compounds. A proper break-in (bedding) procedure is recommended after installation to ensure optimal pad transfer and braking performance.