R1 Concepts 623-54178L RNC Series Drilled Brake Rotor - Left/Driver Side

The R1 Concepts 623-54178L RNC Series Drilled Brake Rotor is a high-performance direct-fit replacement rotor engineered for superior stopping power and fade resistance. Designed as a left/driver-side replacement, this drilled rotor delivers improved heat dissipation and consistent braking performance under demanding driving conditions.

Key Features:

• Drilled Design: Cross-drilled holes promote rapid heat evacuation, reducing brake fade during repeated or hard stops
• Direct OE Replacement: Engineered to match original equipment specifications for a precise, no-modification installation
• Premium Metallurgy: Manufactured from high-carbon gray iron for increased strength, noise reduction, and longer rotor life
• Corrosion-Resistant Finish: Protective coating on non-friction surfaces helps resist rust and corrosion during storage and daily use
• Left/Driver Side Specific: MPN suffix "L" designates this as the left-side rotor; sold individually
• R1 Concepts RNC Series: Part of R1 Concepts' RNC (drilled) rotor lineup, balancing performance and everyday drivability

The R1 Concepts 623-54178L is an ideal upgrade or replacement for drivers seeking improved thermal performance over a standard smooth rotor, while maintaining compatibility with OE brake calipers and pads. Sold as a single rotor.