R1 Concepts 613-48004L RNC Series Slotted Brake Rotor

The R1 Concepts 613-48004L RNC Series Slotted Brake Rotor is a performance-grade disc brake rotor engineered to deliver consistent, fade-resistant stopping power. Featuring precision-machined slots across the rotor face, this rotor continuously sweeps debris, heat, and gases away from the pad surface, maintaining a clean contact patch and maximizing braking efficiency.

R1 Concepts manufactures this rotor using high-carbon grey iron for superior heat absorption and thermal stability. The rotor undergoes a computerized balancing process to minimize vibration and pedal pulsation, ensuring smooth, confident braking under both everyday driving and more demanding conditions.

Key Features:

• Slotted design continuously clears brake pad gases, heat, and debris for consistent performance
• High-carbon grey iron construction for improved heat dissipation and extended rotor life
• Precision G3000 metallurgy meets or exceeds OEM standards
• Computerized balancing minimizes vibration and pedal pulsation
• Zinc dichromate coating on non-contact surfaces helps resist corrosion during storage and service
• Direct OEM replacement fitment for straightforward installation
• Sold individually — this listing is for the left (driver) side rotor

The R1 Concepts RNC slotted rotor is an excellent upgrade for drivers seeking improved braking response and rotor longevity over standard OEM replacements, without requiring any modifications to the existing brake system.