R1 Concepts 623-20001L RNC Series Drilled Brake Rotor - Left

The R1 Concepts 623-20001L is a precision-drilled brake rotor from the RNC (R1 Nano Coat) Series, engineered to deliver consistent stopping performance and long-lasting corrosion resistance. Designed as a direct OEM replacement, this rotor installs without modification and restores factory braking performance — or improves upon it.

Constructed from G3000 grade cast iron, this rotor meets or exceeds original equipment specifications for strength and thermal stability. The precision cross-drilled holes improve heat dissipation, reduce brake fade under demanding conditions, and help expel water, gas, and debris from the braking surface for more reliable pad contact.

Key Features:

• Drilled Design: Precision-drilled holes reduce heat buildup and improve wet-weather braking performance
• G3000 Cast Iron Construction: High-grade iron formulation for durability and consistent rotor hardness
• Nano Coat Finish: Advanced zinc-based protective coating guards against rust and corrosion, extending rotor life and maintaining appearance
• OEM-Spec Dimensions: Direct-fit replacement requiring no modifications or additional hardware
• Left-Side Application: Sold as a single left (driver-side) rotor — MPN suffix "L" denotes left-side fitment
• Balanced Performance: Suitable for daily driving, light performance use, and general street applications

The R1 Concepts RNC Series rotor is a reliable upgrade for drivers looking for improved heat management and corrosion protection over a standard OEM replacement rotor. Compatible with both OEM and aftermarket brake pads.