R1 Concepts 613-21023L RNC Series Slotted Brake Rotor - Left/Driver Side

The R1 Concepts 613-21023L RNC Series Slotted Brake Rotor is a direct-fit, performance-oriented replacement rotor engineered to deliver consistent stopping power and extended rotor life. Designed as a left/driver-side replacement, this rotor installs without modification for a straightforward, hassle-free upgrade from a worn OEM unit.

R1 Concepts' RNC line features precision-machined slots that continuously clean and degas the brake pad surface during operation. This channeling action expels heat, gas, and debris from the rotor-pad interface, reducing brake fade and maintaining firm, responsive pedal feel under both everyday driving and more demanding braking conditions.

Key Features:

• Slotted rotor design — channels heat, gas, and dust away from the pad surface for consistent braking performance
• Left/driver-side fitment — sold individually, direct OEM replacement
• G3000-grade metallurgy — high-carbon cast iron construction for durability and reduced noise
• Precision computer-balanced — minimizes vibration and pedal pulsation
• Zinc dichromate coating — protects non-swept rotor surfaces from rust and corrosion during storage and daily use
• Direct bolt-on installation — no modifications required

The R1 Concepts RNC slotted rotor pairs well with a full brake service including fresh brake pads and hardware. As with any new rotor installation, a proper bed-in procedure is recommended to achieve optimal pad transfer film and maximum braking efficiency.