R1 Concepts 623-03023L RNC Series Drilled Brake Rotor

The R1 Concepts 623-03023L is a drilled brake rotor from R1 Concepts' RNC (Replacement) series, engineered to deliver reliable stopping performance as a direct OE-style replacement. Precision-manufactured from high-quality cast iron, this rotor features a drilled pattern that promotes heat dissipation, reduces brake fade, and helps evacuate gas and dust buildup during braking.

Key Features:

• Drilled pattern for improved heat dissipation and reduced brake fade
• Manufactured from premium G3000-grade cast iron for long-lasting durability
• Precision machined for strict OEM-spec runout tolerances and smooth, vibration-free braking
• Zinc-washed finish on non-braking surfaces to resist rust and corrosion during storage and use
• Direct bolt-on fitment — no modifications required for installation
• Designed for the left (driver) side application

The R1 Concepts RNC series strikes the ideal balance between everyday driveability and enhanced performance, making it a popular upgrade over standard solid replacement rotors. The 623-03023L is a left-side rotor and is sold individually.