R1 Concepts 613-40056L RNC Series Slotted Brake Rotor

The R1 Concepts 613-40056L RNC Series Slotted Brake Rotor is a high-performance replacement rotor engineered for drivers who demand more from their braking system. Designed as a direct OEM-style replacement, this rotor features R1's signature slot pattern that continuously cleans and deglazes brake pads during operation, improving bite and reducing fade under repeated hard stops.

Key Features:

• Slotted Surface Design: Precision-cut slots channel heat, gas, and debris away from the rotor face for consistent, fade-resistant braking performance
• Direct OEM Fitment: Engineered to match original equipment specifications for a straightforward, bolt-on installation with no modifications required
• High-Carbon Gray Iron Construction: Provides superior heat absorption and dissipation compared to standard rotors, extending rotor and pad life
• Left Side Specific: This is the driver-side (left) rotor — verify correct side before installation
• Zinc Dichromate Coating: Anti-corrosion finish protects the non-swept rotor surfaces from rust and environmental exposure for a clean, lasting appearance
• Balanced and Machine-Finished: Precision machined to strict tolerances to minimize vibration and pedal pulsation

R1 Concepts rotors are manufactured to meet or exceed OEM quality standards and are a popular upgrade for drivers seeking improved stopping performance and rotor longevity over standard replacement parts. The RNC (Race-N-Cruise) line is suited for both daily street driving and more spirited performance applications.