R1 Concepts 613-40054L RNC Series Slotted Brake Rotor

The R1 Concepts 613-40054L is a RNC Series slotted brake rotor engineered for drivers who demand improved stopping performance over a standard OE replacement rotor. Featuring precision-machined slots across the rotor face, this rotor continuously cleans and deglazes brake pad surfaces during use, helping to maintain consistent bite and reduce brake fade under repeated heavy braking.

Key Features:

• Slotted design channels heat, gases, and debris away from the pad-to-rotor contact surface
• G3000 high-carbon grey iron construction for durability and thermal stability
• Precision balanced and computer-tested for runout to minimize vibration and pedal pulsation
• Direct bolt-on fitment — no modifications required for installation
• Zinc dichromate coating on non-contact surfaces resists corrosion during storage and break-in
• Left-side (driver side) application — confirm fitment with your vehicle application

The R1 Concepts RNC Series is a popular upgrade for daily drivers and performance enthusiasts looking for a step up from stock rotors without the cost of a full motorsport-grade setup. This rotor is a direct OE replacement with enhanced performance characteristics.