R1 Concepts 623-27027L RNC Series Drilled Disc Brake Rotor - Left

The R1 Concepts 623-27027L is a precision-engineered drilled disc brake rotor designed as a direct-fit replacement for the driver-side (left) position. Built to OEM specifications, this rotor delivers improved stopping performance over a standard blank rotor with no modifications required for installation.

Key Features:

• Cross-Drilled Pattern: Precision-drilled holes are countersunk and chamfered to reduce heat stress, prevent cracking, and allow heat to escape — reducing rotor surface temperature for consistent fade-free braking
• G3000 Grade Cast Iron Construction: Manufactured from high-grade G3000 cast iron for excellent durability, thermal stability, and reliable stopping power
• Zinc Plated Finish: Protective zinc coating applied to the hub and vane structure guards against corrosion, extending rotor lifespan and maintaining appearance
• Double Disc Ground Braking Surface: Promotes faster, more even brake pad bed-in for quieter, smoother stopping from the first drive
• OE Direct Fit: Manufactured to original equipment specifications — bolt-on installation with no drilling, cutting, or modification required
• Left / Driver-Side Position: Sold individually; designed specifically for the driver-side (left) front or rear position as applicable to fitment

R1 Concepts drilled brake rotors are ideal for daily driving, light street performance, and towing or hauling applications where improved heat dissipation and consistent braking are priorities. Always replace brake pads when installing new rotors, and follow a proper bed-in procedure to maximize performance and longevity.