R1 Concepts 623-32017L RNC Series Cross-Drilled Brake Rotor - Left

The R1 Concepts 623-32017L RNC Series Cross-Drilled Brake Rotor is a direct-fit, performance-grade replacement rotor engineered for improved heat dissipation and consistent stopping power. The "L" designation identifies this as the left (driver-side) rotor, designed as a precise match for its corresponding application.

Key Features:

• Cross-Drilled Design: Precision-drilled holes reduce rotor surface temperature by improving airflow and ventilation, helping to manage heat buildup during aggressive or repeated braking
• Chamfered Drill Holes: Each hole is chamfered to reduce stress concentration at the drill points, minimizing the risk of cracking under thermal cycling
• G3000 Grade Cast Iron: Manufactured from high-grade G3000 cast iron for optimal hardness, durability, and consistent rotor wear characteristics
• Zinc Plating: Silver zinc-plated coating on non-braking surfaces protects against corrosion and rust, improving appearance and extending rotor service life
• OEM Direct Fit: Engineered to OEM specifications for a no-modification, direct bolt-on installation — no drilling, cutting, or adapters required
• Non-Directional Surface Finish: Prepared with a non-directional finish to promote faster, more even brake pad bed-in and quieter operation from the start
• Vented Construction: Internal vane structure promotes continuous airflow through the rotor for sustained thermal management under load

The R1 Concepts RNC Series is a trusted choice for drivers seeking a step up from standard OEM rotors without the cost of a full racing setup. Whether used for daily commuting, street performance, or light track and towing applications, the 623-32017L delivers dependable, fade-resistant braking performance.