R1 Concepts 613-76139L RNC Slotted Disc Brake Rotor

The R1 Concepts 613-76139L is a RNC Series slotted disc brake rotor engineered to deliver consistent, reliable stopping power as a direct OE-replacement upgrade. Manufactured to original equipment specifications, this rotor installs without modification for a straightforward, bolt-on fit.

Key Features:

• Slotted Rotor Design: Precision-machined slots increase brake pad bite and channel heat, dust, and debris away from the braking surface, helping prevent pad glazing and extending pad life
• G3000 Grade Cast Iron Construction: Premium iron grade delivers the durability and thermal stability required for consistent braking performance under daily driving conditions
• Double Disc Ground Surface: The braking surface is double disc ground to promote a faster, more even brake pad bed-in and ensure quieter, smoother stopping performance
• Zinc-Plated Coating: A protective zinc coating applied to the hat, hub, and vanes guards against corrosion, extending rotor lifespan and maintaining appearance
• OE Specifications: Manufactured to original equipment dimensions and tolerances — no cutting, drilling, or modifications required for installation
• Wear Indicator: Slot geometry serves as a built-in visual wear indicator; when slots are no longer visible, rotor replacement is recommended

The R1 Concepts 613-76139L is sold as a single rotor (left/driver side) and is designed for drivers seeking a performance-oriented upgrade over a standard blank replacement rotor without sacrificing street manners or daily drivability.