R1 Concepts 623-47092L RNC Series Drilled Brake Rotor - Left

The R1 Concepts 623-47092L is a RNC Series drilled brake rotor designed as a direct OE replacement with enhanced performance characteristics. Engineered for the left-side position, this rotor features precision-drilled holes across the rotor face to improve heat dissipation, reduce brake fade, and shed water, gas, and debris during braking.

R1 Concepts manufactures this rotor using G3000-grade grey iron, the same high-carbon alloy used in OEM applications, ensuring consistent thermal conductivity and long service life. Each rotor is manufactured to strict dimensional tolerances with a precision-machined mounting hat and braking surface for smooth, vibration-free pedal feel right out of the box.

Key Features:

• Drilled rotor design for superior heat dissipation and reduced brake fade
• G3000 grey iron construction for OEM-equivalent strength and longevity
• Left-side (driver side) fitment — sold as a single rotor
• Precision CNC-machined to exact OEM specifications for direct bolt-on installation
• E-coating on non-braking surfaces for corrosion resistance during storage and initial use
• Balanced and tested to minimize vibration and pulsation
• Compatible with OEM and performance brake pads

The R1 Concepts RNC drilled rotor is an ideal upgrade for drivers seeking improved braking performance and thermal management over a standard smooth replacement rotor, while maintaining factory fit and function.