R1 Concepts 623-54198L RNC Drilled Disc Brake Rotor

The R1 Concepts 623-54198L is a drilled disc brake rotor from R1 Concepts' RNC Series, engineered to deliver improved stopping performance over a standard OEM replacement rotor. Precision-drilled holes promote heat dissipation and help reduce brake fade during demanding driving conditions, keeping your braking system operating at peak efficiency.

Key Features:

• Precision Cross-Drilled Holes — Countersunk design maximizes heat venting, reduces thermal stress, and helps prevent cracking under repeated braking cycles
• G3000 Grade Cast Iron Construction — Manufactured to OEM-equivalent material standards for reliable strength and long service life
• Silver Zinc Plated Coating — Protects the non-braking surfaces (hub, vanes, and hat) from corrosion, extending rotor life and maintaining appearance
• Direct-Fit OEM Replacement — Engineered to OEM specifications; no modifications required for installation
• Left / Driver Side — This is a single rotor for the left (driver) side position

R1 Concepts rotors undergo a standard bed-in procedure after installation. During the initial break-in period, the zinc coating on the braking surface will wear off naturally, leaving the hub and vane structure protected. For best results, replace brake pads at the same time as rotors and follow the recommended bedding procedure.