R1 Concepts 613-40066L RNC Series Slotted Brake Rotor

The R1 Concepts 613-40066L RNC Series Slotted Brake Rotor is a performance-engineered replacement rotor designed to deliver consistent, fade-resistant braking in a wide range of driving conditions. The slotted rotor surface continuously sweeps the brake pad face to remove gas, heat, and debris from the contact zone, maintaining strong pedal feel and braking performance under repeated hard stops.

Key Features:

• Slotted Surface Design – Precision-machined slots evacuate heat, gas, and dust buildup for improved brake bite and consistent performance
• High-Carbon Gray Iron Construction – Premium casting material provides excellent thermal capacity and extended rotor life
• Corrosion-Resistant Coating – Non-contact surfaces are coated to resist rust and maintain a clean appearance
• Precision Balanced – Computer-balanced to minimize vibration and eliminate brake pedal pulsation
• Direct OE Replacement – Designed as a direct bolt-on replacement with no modifications required
• Left-Side Application – This rotor is specifically designed for the left (driver) side fitment

R1 Concepts rotors are manufactured to meet or exceed OEM dimensional specifications, ensuring proper fitment and reliable stopping power. The RNC slotted design is an ideal upgrade for drivers seeking improved braking performance over standard smooth rotors without the aggressive wear characteristics of fully drilled units.