R1 Concepts 623-46026L RNC Series Drilled Brake Rotor

The R1 Concepts 623-46026L is a drilled brake rotor from R1 Concepts' RNC (Replacement Non-Coated) series, engineered to deliver reliable stopping power as a direct OE-style replacement. Featuring a precision-drilled face pattern, this rotor improves heat dissipation and reduces brake fade under repeated braking cycles, making it a solid upgrade from a standard solid rotor.

Key Features:

• Drilled rotor design for improved heat ventilation and reduced brake fade
• OE-quality direct fit replacement — no modifications required
• Precision machined for consistent rotor thickness variation (RTV) and lateral runout (LRO)
• High-carbon grey iron construction for durability and noise reduction
• Balanced for smooth, vibration-free braking performance
• Meets or exceeds OEM specifications

R1 Concepts rotors are manufactured to strict quality standards and are engineered for straightforward installation. The 623-46026L is the left (driver) side rotor, as indicated by the "L" suffix. Whether replacing a worn rotor or upgrading to a drilled design, this rotor provides consistent, fade-resistant performance for daily driving and spirited use alike.