R1 Concepts 623-31097R RNC Series Drilled Disc Brake Rotor

The R1 Concepts 623-31097R RNC Series is a cross-drilled performance disc brake rotor engineered for drivers who demand reliable, fade-resistant stopping power. Manufactured from high-grade G3000 cast iron, this rotor delivers consistent performance under a wide range of driving conditions, from daily commuting to spirited driving.

Key Features:

• Cross-Drilled Design: Precision-drilled holes improve heat dissipation and help evacuate water, gas, and brake dust from the rotor surface for more consistent bite and reduced fade
• Chamfered Drill Holes: Each hole is chamfered to minimize stress concentration at the edges, reducing the risk of cracking under thermal cycling
• G3000 Cast Iron Construction: Premium metallurgy ensures long rotor life and compatibility with a wide range of brake pad compounds, including OEM and ceramic formulations
• Zinc Dichromate Coating: Protective anti-rust coating on the hat and non-swept surfaces helps prevent corrosion during storage and extends service life
• Balanced and Road-Force Tested: Each rotor is precision-machined and balanced to minimize vibration and pedal pulsation
• Direct OEM Replacement: Bolt-on fitment with no modification required — matches original mounting dimensions and hardware

The R1 Concepts RNC rotor is a straightforward upgrade over a worn or warped OEM rotor, offering improved thermal management and a cleaner aesthetic. Sold individually; always replace rotors in axle pairs for balanced braking performance.