R1 Concepts 623-47031L RNC Series Drilled Disc Brake Rotor Left

The R1 Concepts 623-47031L is a cross-drilled disc brake rotor from R1 Concepts' RNC Series, designed as a direct-fit left-side (driver-side) replacement. Engineered to OEM specifications, this rotor delivers enhanced stopping performance with no modifications required for installation.

Key Features:

• Cross-Drilled Design: Precision-drilled holes reduce heat buildup on the rotor surface and improve ventilation, helping to minimize brake fade during demanding stops
• Chamfered Drill Holes: Each hole is chamfered to reduce stress concentration points and lower the potential for cracking under repeated thermal cycling
• G3000 Grade Cast Iron Construction: Manufactured from high-grade G3000 cast iron for excellent durability, consistent friction characteristics, and long service life
• Silver Zinc Plated Coating: Full zinc coating protects the rotor from corrosion during storage and on the road, extending overall lifespan and maintaining appearance on non-contact surfaces
• OEM-Spec Dimensions: Machined to factory dimensions for a precise, bolt-on fit with no modifications or adapters needed
• Left-Side Application: Designed specifically for the driver-side (left) position — sold individually

R1 Concepts rotors are manufactured to meet or exceed OEM standards, making the 623-47031L an ideal upgrade or replacement for drivers seeking improved thermal management and reliable everyday braking performance.