R1 Concepts 623-54210R RNC Series Drilled Brake Rotor

The R1 Concepts 623-54210R RNC Series Drilled Brake Rotor is a high-performance replacement rotor engineered to deliver consistent stopping power and improved thermal management over stock brake components. Precision-machined from premium G3000 grade cast iron, this rotor meets or exceeds OEM specifications while offering the performance advantages of a drilled surface design.

The strategically placed drilled holes reduce rotor weight, channel heat away from the braking surface, and help evacuate gases and debris from between the pad and rotor — resulting in improved bite, reduced fade, and more consistent pedal feel under repeated braking.

Key Features:

• Drilled hole pattern for improved heat dissipation and gas venting
• Manufactured from G3000 grade cast iron for strength and durability
• Precision-machined to OEM-equivalent tolerances for proper fitment and minimal runout
• Zinc dichromate anti-rust coating on non-braking surfaces to resist corrosion
• Direct bolt-on replacement — no modifications required
• Balanced and ready to install out of the box

R1 Concepts is a California-based brake specialist known for delivering track-inspired brake technology at an accessible price point. The RNC series is designed for drivers seeking a performance upgrade without sacrificing everyday drivability.