R1 Concepts 631-92016L RNC Series Drilled & Slotted Brake Rotor - Left

The R1 Concepts 631-92016L RNC Series Brake Rotor is a drilled and slotted performance replacement rotor designed to deliver improved stopping power and consistent fade resistance over the OEM rotor. The left-side (driver side) fitment rotor is precision-machined from high-quality G3000 gray iron casting for long-lasting durability and reliable thermal stability under demanding driving conditions.

The combination of cross-drilled holes and curved slots work together to evacuate heat, gas, and debris from the rotor surface, maintaining firm, consistent brake pad contact. This design also reduces brake fade during repeated heavy stops, making it a popular upgrade for daily drivers and performance enthusiasts alike.

Key Features:

• Drilled and slotted rotor surface for improved heat dissipation and gas venting
• G3000 gray iron construction for strength and thermal stability
• Left-side (driver side) direct-fit replacement
• Electro-coating or zinc wash finish to resist corrosion during shipping and storage
• Precision CNC machined to OEM tolerances for easy, no-modification installation
• Balanced to minimize vibration and pedal pulsation

R1 Concepts rotors are engineered as a direct bolt-on replacement, requiring no modifications for installation. The RNC Series is an excellent value-driven upgrade over standard smooth rotors, providing enhanced performance characteristics without sacrificing everyday drivability.