R1 Concepts 631-92037L RNC Series Drilled & Slotted Brake Rotor

The R1 Concepts 631-92037L RNC Series Drilled and Slotted Brake Rotor is a performance-engineered replacement rotor designed to deliver superior stopping power and heat management over standard OEM rotors. Featuring a cross-drilled and slotted rotor face, this unit is built for drivers who demand more from their braking system whether on the street or during spirited driving.

The drilled holes help evacuate heat, gases, and moisture from the rotor surface, while the precision-machined slots continuously sweep the brake pad face clean for consistent, fade-resistant braking. The rotor is finished with a silver zinc plating on non-braking surfaces to protect against rust and corrosion, extending the service life and maintaining a clean appearance behind the wheel.

Key Features:

• Cross-drilled and slotted rotor design for enhanced heat dissipation and gas venting
• Silver zinc plated coating on hub and vane structure for corrosion resistance
• Precision machined to OEM specifications for proper fitment and minimal runout
• Direct bolt-on replacement — no modifications required
• Improved braking consistency and reduced brake fade under demanding conditions
• Left-side (driver side) rotor — sold individually

The R1 Concepts RNC Series rotor is a straightforward upgrade for drivers looking to improve braking confidence without a full big brake kit. It pairs well with R1 Concepts OPTIMUM OEp or ceramic brake pad compounds for a complete brake refresh.