Alcon DV304/28/55-12/178L Pro-System Directional Vane Brake Rotor - Left

The Alcon DV304/28/55-12/178L is a high-performance directional vane brake rotor engineered as part of Alcon's Pro-System brake line. Designed for motorsport and performance driving applications, this rotor delivers exceptional heat dissipation, fade resistance, and consistent pedal feel under demanding track and competition conditions.

Key Features:

• Directional Vane (DV) Design: Curved internal vanes optimized for maximum airflow and thermal management, reducing rotor temperatures during hard braking
• 304mm Rotor Diameter: Purpose-sized for high-performance brake caliper compatibility within the Alcon Pro-System
• 28mm Rotor Thickness: Substantial braking surface providing excellent thermal mass and resistance to heat soak
• Left-Hand (L) Designation: This rotor is directionally specific and designed for left-side fitment — directional vanes must be installed on the correct side for proper airflow
• 55-12 Hat Specification: Precise bell/hat dimensions ensure accurate fitment within compatible Alcon Pro-System hub and hat assemblies
• 178 Offset: Engineered offset dimension for correct caliper and wheel clearance alignment
• Premium Steel Construction: Manufactured from high-grade cast iron alloy to Alcon's motorsport-grade tolerances for durability and consistent performance
• Pro-System Compatible: Designed to integrate seamlessly with Alcon Pro-System two-piece rotor assemblies using a separate bell/hat

Alcon's Pro-System rotors are trusted by professional motorsport teams and performance enthusiasts worldwide. The directional vane technology ensures this rotor performs reliably across sprint racing, endurance events, and high-performance road use. Always verify correct left/right pairing and hat assembly compatibility when ordering.