R1 Concepts 613-40015L RNC Series Slotted Brake Rotor

The R1 Concepts 613-40015L RNC Series Slotted Brake Rotor is a performance-grade disc brake rotor engineered to deliver improved stopping power and consistent braking feel over the factory replacement. Designed as a direct-fit, single rotor (driver side / left), this unit slots seamlessly into your existing brake system without modifications.

Key Features:

• Slotted Design: Linear slots channel heat, gas, and debris away from the rotor face, maintaining strong pad-to-rotor contact and reducing brake fade under repeated or hard stops
• High-Carbon Gray Iron Construction: Provides superior thermal capacity and vibration damping compared to standard cast iron rotors
• Protective Coating: Anti-rust surface treatment on non-braking surfaces helps prevent corrosion during storage and extends the rotor's service life
• Precision Machined: Computer-balanced and precision-machined to OEM-level tolerances for smooth, quiet operation and minimal runout
• Direct OEM Replacement: Engineered to meet or exceed original equipment specifications for a straightforward, no-hassle installation
• Left / Driver Side (Single Rotor): This listing covers one rotor — the left (driver) side only

R1 Concepts is a Los Angeles-based manufacturer specializing in performance brake components for a wide range of domestic and import vehicle applications. The RNC Series slotted rotor is an ideal upgrade for drivers seeking improved braking performance over a stock rotor without the complexity or cost of a full big-brake kit.