R1 Concepts 623-03050L RNC Series Drilled Disc Brake Rotor

The R1 Concepts 623-03050L RNC Series Drilled Brake Rotor is a performance-grade disc rotor engineered to deliver improved stopping power and extended service life over standard OEM rotors. Designed as a direct-fit replacement, this rotor installs without modification and is built to OEM dimensional specifications for a precise, rattle-free fit.

R1 Concepts' RNC Series rotors feature a cross-drilled pattern that promotes heat dissipation and helps vent gases and water from the braking surface. Constructed from G3000 grade cast iron, the rotor provides the rigidity and thermal capacity needed for consistent, fade-resistant braking under repeated stops. A silver zinc dichromate coating is applied to all non-braking surfaces to resist rust and corrosion, keeping the rotor looking clean behind your wheels.

Key Features:

• RNC Series cross-drilled rotor design for enhanced heat and gas dissipation
• G3000 grade cast iron construction for durability and thermal stability
• Silver zinc dichromate coating on hub and vane surfaces for corrosion resistance
• Direct OEM replacement — no modifications required
• Driver-side (left) fitment
• Vented disc design for improved cooling during heavy braking

The R1 Concepts 623-03050L is a reliable upgrade for drivers seeking improved braking performance and corrosion protection without straying from a direct-fit, streetable solution.