GIRODISC A1-224SL Front Left Brake Disc for ALFA ROMEO Giulia Quadrifoglio / Stelvio Quadrifoglio

Description GIRODISC A1-224SL Front Left Brake Disc for ALFA ROMEO Giulia Quadrifoglio / Stelvio Quadrifoglio

The GIRODISC A1-224SL front right brake disc is a direct OEM replacement for Alfa Romeo Giulia Quadrifoglio and Stelvio Quadrifoglio models. No modifications are required — the rotor installs directly and operates perfectly with factory calipers. This upgrade maintains the original brake bias and ABS performance while offering the advantages of reduced unsprung mass and improved thermal characteristics. The system combines motorsport engineering with everyday usability, providing superior braking stability under demanding conditions.

The hat section is precision-machined from U.S.-sourced 6061-T6 aircraft-grade aluminum, while the rotor is cast from Girodisc’s proprietary iron alloy and fully machined in-house. Its curved vane design acts as a centrifugal pump, drawing cooling air through the disc to enhance heat dissipation. The two-piece floating construction uses twelve cadmium-plated, high-strength alloy steel drive pins, ensuring both corrosion resistance and thermal expansion tolerance. Anti-noise spring washers are fitted to prevent rattling while allowing the rotor to expand under high temperatures. For maintenance, only the cast iron ring needs replacement, making the system cost-effective and durable.

• Direct replacement for OEM disc; no modifications required
• Maintains factory brake bias and ABS efficiency
• Floating two-piece design for improved cooling and performance
• Curved vane construction enhances airflow and heat management
• Cadmium-plated steel pins with anti-noise washers ensure quiet operation

Specifications:

• Disc Diameter: 359.8 mm
• Disc Height: 41.2 mm
• Max Thickness: 32.0 mm
• Min Thickness: 29.5 mm
• Material: Cast Iron
• Disc Construction: 2-Piece Floating