R1 Concepts 613-40004L RNC Series Slotted Brake Rotor

The R1 Concepts 613-40004L is a premium RNC Series slotted brake rotor engineered for drivers who demand consistent, fade-resistant stopping power. R1 Concepts rotors are manufactured to strict dimensional tolerances, ensuring direct OEM-style fitment with no modification required.

Key Features:

• Slotted design evacuates heat, gas, and debris from the rotor surface, improving bite and pedal feel under repeated braking
• RNC (Rotor No Coat) Series — zinc-plated hat and outer edge resist corrosion and surface rust for a cleaner appearance over the rotor's service life
• Premium G3000-grade grey iron casting delivers superior heat absorption and dissipation
• Computer-balanced construction minimizes vibration and eliminates brake pulsation
• OEM-quality specifications including correct thickness, diameter, and hat depth for a precise, rattle-free fit
• Left-side (driver's side) application — sold as a single rotor

R1 Concepts brake rotors are a direct replacement upgrade, compatible with a wide range of OEM-spec brake pads. Whether used for daily driving or spirited street performance, the 613-40004L delivers reliable, consistent braking with improved thermal management over standard smooth rotors.