R1 Concepts 631-92012L RNC Drilled & Slotted Brake Rotor

The R1 Concepts 631-92012L RNC Series Drilled and Slotted Brake Rotor is a high-performance replacement rotor engineered for drivers who demand more from their braking system. Featuring a combination of cross-drilled holes and machined slots, this rotor delivers superior stopping power, reduced brake fade, and improved overall braking performance compared to standard OEM rotors.

Key Features:

• Cross-Drilled & Slotted Design: Drilled holes allow heat, gas, and debris to escape, while slots continuously clean the brake pad surface for consistent, fade-resistant braking
• Premium G3000 Grade Iron Casting: Meets or exceeds OEM metallurgy standards for durability and long service life
• Precision Machined: Computer-balanced and precision-machined to strict tolerances for smooth, vibration-free operation
• Corrosion-Resistant Coating: Non-contact surfaces feature a zinc dichromate or e-coating finish to resist rust and maintain a clean appearance
• Direct OEM Replacement: Designed as a direct bolt-on replacement with no modifications required
• Left Side Application: This part number is specifically for the left (driver) side position

R1 Concepts rotors are manufactured to strict quality control standards and are a popular upgrade for drivers seeking improved brake feel and thermal management over stock rotors. The RNC series combines the benefits of both drilled and slotted technology in a single rotor, making it an excellent choice for street performance and spirited driving applications.