R1 Concepts 623-48050L RNC Series Drilled 1-Piece Brake Rotor

The R1 Concepts 623-48050L is an RNC Series cross-drilled 1-piece brake rotor engineered to deliver enhanced stopping performance over a standard OEM replacement rotor. Precision-manufactured to OEM specifications, this rotor installs without modification for a direct, bolt-on fit.

Key Features:

• Cross-Drilled Pattern: Precision-drilled holes with countersunk design reduce heat buildup by improving airflow across the rotor surface, helping to dissipate heat more efficiently during repeated braking
• Countersunk Drill Holes: Each hole is countersunk to prevent cracking and maintain rotor integrity under thermal stress
• G3000 Grade Cast Iron: High-grade cast iron construction provides the strength, thermal capacity, and durability required for consistent braking performance
• Zinc Finish Coating: Protective zinc plating guards non-swept surfaces against corrosion and rust, extending the service life of the rotor
• OEM-Spec Design: Built to original equipment dimensions and tolerances — no cutting, grinding, or modification required for installation
• 1-Piece Construction: Solid vented single-piece rotor design for reliable, long-lasting performance
• Left/Driver Side: This part number is specifically for the left (driver) side position

R1 Concepts is a Los Angeles-based manufacturer with over 20 years of brake system expertise, producing one of the most comprehensive brake catalogs in the industry covering foreign and domestic vehicles. The 623-48050L is sold individually (1 rotor per pack).