R1 Concepts 623-03047R RNC Series Drilled Brake Rotor

The R1 Concepts 623-03047R RNC Series Drilled Brake Rotor is a precision-engineered replacement rotor designed to deliver consistent stopping power and improved thermal performance over stock rotors. Built to OE specifications for a direct, no-modification fit, this rotor is an ideal upgrade for drivers seeking enhanced braking performance and longevity.

R1 Concepts' RNC (Replacement Non-Coated) series features a strategically drilled face pattern that helps dissipate heat and gas buildup generated during braking. The drilled holes reduce rotor mass to minimize unsprung weight while improving bite and pedal feel. The rotor is manufactured from high-carbon grey iron for durability and resistance to cracking under repeated thermal cycling.

Key Features:

• Drilled rotor design for improved heat dissipation and reduced brake fade
• High-carbon grey iron construction for strength and thermal stability
• Precision-machined to OE specifications for direct bolt-on installation
• Balanced and tested for smooth, vibration-free operation
• RNC Series — designed as a direct OEM replacement with performance benefits
• Helps reduce unsprung weight compared to solid rotors

The R1 Concepts 623-03047R is a single rotor and should be replaced in axle pairs for balanced, even braking performance. Compatible with OEM brake pads, though pairing with a quality performance pad set is recommended to maximize the benefits of the drilled surface design.