Brembo 4K0 615 301 S Front Cross-Drilled Brake Disc Rotor 420x40mm

The Brembo 4K0 615 301 S is a front cross-drilled, internally vented brake disc engineered to OEM specifications. Measuring 420x40mm, this is a single-disc unit designed for high-performance Audi applications without ceramic composite brake systems. Brembo is the OEM supplier for this rotor, meaning it meets the exact fit, form, and function requirements of the original factory brake system.

Cross-drilled rotors improve heat dissipation and help expel gases and debris from the braking surface, contributing to consistent, fade-resistant stopping performance under demanding driving conditions. This disc features an internally vented construction that promotes airflow through the rotor to further manage thermal load during repeated or heavy braking.

Key Features:

• OEM part number: 4K0 615 301 S (also referenced as 4K0-615-301-S)
• Cross-drilled and internally vented design for superior heat management
• 420x40mm rotor dimensions
• Front axle application — sold as a single disc
• Excludes ceramic composite brake systems
• Manufactured by Brembo to OEM specifications
• Direct OEM replacement — no modifications required

Replace worn or warped front rotors with this Brembo OEM brake disc to restore proper braking performance and pedal feel. Professional installation by a qualified technician is recommended.