R1 Concepts 631-92005R RNC Drilled & Slotted Brake Rotor

The R1 Concepts 631-92005R RNC Brake Rotor is a high-performance drilled and slotted disc brake rotor engineered to deliver superior stopping power over stock replacement rotors. Featuring R1 Concepts' signature cross-drilled and diamond-slotted surface pattern, this rotor is built for drivers who demand more from their brake system — whether on daily streets, light track use, towing, or off-road conditions.

Key Features:

• Cross-Drilled Holes: Precision-drilled and chamfered holes reduce rotor surface heat by dissipating thermal buildup, helping prevent brake fade during heavy or repeated stops
• Diamond Slot Technology: Curved slots sweep away brake dust, gas, and road debris from the pad contact surface, preventing pad glazing and extending pad life; diamond-tipped slot ends serve as a built-in wear indicator
• Zinc Plated Coating: Silver zinc plating protects the rotor hub and non-braking surfaces from corrosion, improving appearance and longevity; coating on the braking surface wears away naturally during break-in
• OEM-Spec Construction: Manufactured to original equipment specifications for a direct-fit installation with no modifications required
• Countersunk Drill Design: Countersunk holes help prevent stress cracking and promote a smoother break-in process

The R1 Concepts RNC series drilled and slotted rotor is sold as an individual rotor. A proper break-in (bedding) procedure is recommended upon installation to ensure optimal braking performance and maximum rotor life.