R1 Concepts 613-40051L RNC Series Slotted Disc Brake Rotor - Left/Driver Side

The R1 Concepts 613-40051L is a slotted disc brake rotor from the R1 RNC Series, engineered to deliver reliable, consistent stopping power as a direct OE replacement with a performance upgrade. Slotted rotors improve braking feel by continuously sweeping the brake pad surface clean of heat, gas, and debris, helping maintain firm pedal response and fade resistance under demanding conditions.

Key Features:

• Slotted Rotor Design: Precision-machined slots evacuate heat, gas, and brake dust from the rotor face, improving bite and extending pad life
• G3000 Grade Cast Iron: High-quality iron alloy provides excellent thermal stability and long service life
• Zinc-Plated Coating: Protective zinc finish on the hat and non-friction surfaces resists corrosion and rust for a cleaner appearance and longer rotor life
• Double Disc Ground Braking Surface: Precision-ground contact surface promotes faster, more even brake pad bed-in and quieter, smoother stops
• Direct-Fit Replacement: Manufactured to OE specifications for a straightforward, no-modification installation
• Left/Driver Side: This part number (613-40051L) is the driver-side rotor — confirm fitment with your vehicle application

The R1 Concepts RNC Series is designed for drivers who want an upgrade over a standard blank rotor without sacrificing everyday drivability. The slotted surface provides improved performance characteristics while remaining compatible with both OE-style and performance brake pads.