R1 Concepts 623-58039R RNC Series Drilled Disc Brake Rotor - Right

The R1 Concepts 623-58039R RNC Series Drilled Brake Rotor is a precision-engineered replacement disc brake rotor designed to deliver reliable stopping power and consistent pedal feel. This is a right-side (passenger side) rotor, engineered to OE dimensions for a direct-fit installation with no modifications required.

R1 Concepts rotors are manufactured from high-grade cast iron using computer-controlled machining processes that ensure tight dimensional tolerances, proper rotor runout, and even braking surface quality. The cross-drilled hole pattern promotes heat dissipation and helps expel water, dust, and gas build-up from the braking surface, contributing to reduced brake fade and improved wet-weather stopping performance.

Key Features:

• Cross-Drilled Design – Promotes thermal dissipation and clears debris from the rotor face for consistent braking response
• Right-Side (Passenger Side) Fitment – Direct OE replacement; no cutting, grinding, or modification needed
• High-Grade Cast Iron Construction – Provides the strength, balance, and thermal mass required for dependable braking performance
• Precision Machined – Computer-controlled manufacturing ensures proper rotor thickness variation and lateral runout specs
• Corrosion-Resistant Coating – Non-braking surfaces are coated to resist rust and improve appearance
• Vented Rotor Design – Internal vanes allow airflow through the rotor for additional cooling capacity

R1 Concepts is a Los Angeles-based manufacturer with over 20 years of experience producing aftermarket and performance braking components. The 623-58039R is sold as a single rotor and is intended for use on the right (passenger) side of the vehicle.