R1 Concepts 623-72032L RNC Series Drilled Disc Brake Rotor - Left

The R1 Concepts 623-72032L RNC Series Drilled Brake Rotor is a direct-fit, high-performance disc brake rotor engineered for drivers who demand improved stopping power and heat management over a standard OEM replacement. This is the left (driver's side) rotor, sold individually.

Constructed from G3000 grade cast iron and built to OEM specifications, the 623-72032L installs without any modifications required. A protective zinc plating covers the hat and vane structure to guard against corrosion, extending rotor life and maintaining appearance over time.

Key Features:

• Precision Drilled Holes: Countersunk drilling enhances heat ventilation and dissipates thermal buildup, reducing brake fade during repeated stops
• G3000 Grade Cast Iron Construction: Matched to OEM metallurgy standards for consistent, reliable stopping power and long service life
• Zinc Corrosion Protection: Applied to the hat and internal vane structure to resist rust and reduce maintenance costs
• Non-Directional Surface Finish: Double disc ground braking surface promotes faster, more even brake pad bed-in for quieter, smoother stops from the start
• Direct OEM Fit: Engineered to factory specifications — no modifications, drilling, or cutting required for installation
• Left Side (Driver's Side): Single rotor sold individually; verify fitment to ensure correct side application

The R1 Concepts RNC drilled rotor is an ideal upgrade for street performance and daily driving applications where enhanced heat dissipation and consistent pedal feel are priorities. It is compatible with OEM-style and performance aftermarket brake pads. Always replace brake pads when installing new rotors and follow the proper bed-in break-in procedure for optimal performance.