R1 Concepts 623-63031L RNC Series Drilled Brake Rotor - Left/Driver Side

The R1 Concepts 623-63031L RNC Series Drilled Brake Rotor is a direct OE-style replacement rotor engineered to restore safe, reliable braking performance. Designed as a left/driver-side fitment, this rotor features a drilled pattern that promotes heat dissipation and helps reduce brake fade during repeated or heavy braking.

R1 Concepts manufactures their RNC rotors from premium G3000 grade cast iron, meeting or exceeding original equipment specifications for thickness, diameter, and vane configuration. Each rotor undergoes precision computer-balanced machining to minimize vibration and pedal pulsation, ensuring a smooth, confident braking feel right out of the box.

Key Features:

• Drilled Pattern: Cross-drilled holes improve heat dissipation and help expel gas and debris from the rotor surface
• G3000 Cast Iron Construction: OE-grade metallurgy for durability and consistent performance
• Computer Balanced: Precision machined to minimize rotor run-out and pedal pulsation
• Left/Driver Side Fitment: Direct replacement for the front or rear left-side rotor position (confirm application)
• OE Replacement Design: Bolt-on installation with no modifications required
• Zinc Dichromate Coating: Protective anti-rust coating on non-friction surfaces to prevent corrosion during storage and early service life

The R1 Concepts RNC rotor is an ideal choice for drivers seeking a reliable, cost-effective brake rotor replacement that meets factory performance standards. Compatible with OEM brake calipers and hardware.