R1 Concepts 613-40090R RNC Series Slotted Brake Rotor

The R1 Concepts 613-40090R RNC Series Slotted Brake Rotor is a high-performance direct-fit replacement rotor engineered for improved braking performance over stock. The RNC (Right-Hand, Non-Coated) designation indicates this is a right-side rotor designed for straightforward installation without requiring additional surface preparation on the friction area.

R1 Concepts manufactures this rotor using G3000-grade premium gray iron, the same material specification used in many OEM rotors, ensuring proper thermal conductivity and long service life. The precision-machined slotted surface pattern continuously sweeps debris, water, and gas away from the pad contact area, maintaining consistent bite and reducing glazing over the life of the rotor.

Key Features:

• Slotted rotor design for improved heat dissipation and debris evacuation
• G3000 premium gray iron construction for OEM-equivalent durability
• Precision CNC-machined for strict dimensional accuracy and runout tolerances
• Direct OEM replacement — no modifications required for installation
• E-coating on non-friction surfaces to resist corrosion during storage and break-in
• 100% computer-balanced to minimize vibration and brake pedal pulsation
• Right-side fitment (RNC designation)

R1 Concepts rotors are manufactured to meet or exceed OEM specifications, making this slotted rotor an ideal upgrade for drivers seeking improved braking response and rotor longevity compared to a standard smooth replacement rotor.