R1 Concepts 623-54138R RNC Series Drilled Brake Rotor

The R1 Concepts 623-54138R is a drilled replacement brake rotor from the RNC series, engineered for drivers seeking improved braking performance and thermal management over standard OE-style rotors. Cross-drilled holes promote rapid heat dissipation and help evacuate gases, water, and debris from the rotor surface, maintaining consistent pad-to-rotor contact for reliable stopping power.

Key Features:

• Drilled Design: Cross-drilled holes reduce heat buildup and improve wet-weather braking performance
• High-Quality Steel Construction: Manufactured from premium G3000 or equivalent grade metallurgy for durability and long service life
• Precision Machined: CNC-machined to tight tolerances for smooth, vibration-free operation and minimal runout
• Corrosion-Resistant Finish: Zinc or e-coat finish on non-friction surfaces to resist rust and improve appearance
• Direct OE Replacement: Bolt-on fitment designed to match original equipment specifications — no modifications required
• Balanced for Smooth Performance: Dynamically balanced to eliminate brake pedal pulsation and shimmy

R1 Concepts is a leading manufacturer of performance brake components, and the RNC series is designed to offer an upgrade over stock rotors while remaining street-friendly and daily-driver compatible. This rotor is sold individually — confirm quantity needed for your application before ordering.