R1 Concepts 613-39032L RNC Series Slotted Disc Brake Rotor - Front Left

The R1 Concepts 613-39032L RNC Series Slotted Brake Rotor is a performance-grade, slotted disc brake rotor designed for the front left (driver side) position. Engineered to deliver improved braking performance over standard blank rotors, the RNC Series features a diamond-slot pattern that enhances brake pad bite, evacuates heat and debris from the rotor surface, and helps prevent brake fade under demanding conditions.

Key Features:

• Diamond Slotted Design: Increases brake pad bite and channels heat, gas, and debris away from the pad contact surface to maintain consistent stopping power
• Slotted Wear Indicator: The diamond-tipped slots serve as a visual wear indicator — when the slots are no longer visible, the rotor has reached minimum thickness and should be replaced
• Double Disc Grind: The braking surface is double-disc ground to promote faster, more even brake pad bed-in and deliver quieter, smoother stopping performance
• Zinc Plated Coating: Applied to the hub and vane structure to resist corrosion, extend rotor lifespan, and maintain a clean appearance between pad replacements
• G3000 Iron Grade Construction: Manufactured from high-grade G3000 iron for durability, thermal stability, and reliable long-term performance
• OE-Spec Direct Fit: Manufactured to original equipment specifications for a direct bolt-on installation with no modifications required
• Position: Front Left (Driver Side)

The R1 Concepts RNC Series slotted brake rotor is a strong upgrade for drivers seeking better braking response and rotor longevity compared to standard OEM replacement rotors. As with all new rotors, a proper break-in (bed-in) procedure is recommended after installation to achieve optimal pad-to-rotor contact and braking performance.