Alfa Romeo Giulia & Stelvio Quadrifoglio Front Rotors

Upgrade your Alfa Romeo Giulia or Stelvio Quadrifoglio with Girodisc’s high-performance front rotors. These 2-piece floating rotors are a direct bolt-in replacement for the factory discs—no modifications needed. They preserve your OEM ABS tuning and brake bias while delivering improved cooling, reduced fade, and sharper pedal response.

Precision Engineering for Alfa Performance

Each rotor is manufactured entirely in the USA using premium materials. The hat section is CNC-machined from U.S.-sourced 6061-T6 aluminum, while the rotor rings are cast from Girodisc’s proprietary high-carbon iron alloy and machined to tight tolerances. The internal curved vanes act like centrifugal pumps to channel airflow through the rotor, maintaining optimal temperatures under hard braking.

Vehicle Fitment

• Alfa Romeo Giulia Quadrifoglio (2017+)
• Alfa Romeo Stelvio Quadrifoglio (2018+)

Features

• True OEM Fitment: Installs directly using factory mounting points and calipers—no adapters or modifications required.

• Two-Piece Floating Design: The rotor ring floats relative to the hat using high-strength pins for thermal expansion management and quiet operation.

• Curved Vane Cooling: Internal vanes pull air through the rotor to dissipate heat efficiently under repeated hard stops.

• High-Strength Pin Hardware: 12 cadmium-plated alloy steel pins, secured with class 12.9 fasteners and anti-noise spring washers, maintain performance and silence.

• Long Service Life: Only the cast iron rings need replacement when they wear; the aluminum hats are reusable.

• Proudly Made in the USA: Every component is engineered, machined, and assembled at Girodisc’s U.S. facility.

FAQs – Alfa Giulia / Stelvio Quadrifoglio Front Rotors

Will these work with stock Brembo calipers? Yes — they’re designed to mount directly to the factory calipers without needing spacers or adapters.

Can I use these rotors for spirited street driving and occasional track days? Absolutely — Girodisc rotors balance track-level performance with street reliability.

Do they produce any noise or vibration? The anti-noise spring washers prevent rattle and vibration while still permitting natural thermal expansion.

When should I replace the iron rings? Once the rings reach their minimum thickness specification (as per Girodisc guidelines) or show cracking, they should be replaced to maintain safe performance.

Transform your Giulia or Stelvio Quadrifoglio’s braking performance with Girodisc’s precision-engineered 2-piece front rotors. Expect cooler operation, sharper response, and lasting reliability lap after lap.