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  See more parts for Alfa Romeo 4C
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Girodisc 2-Piece Rear Rotors for Alfa Romeo 4C (2015-2020) - A2-078, Lightweight Design - A2-078

Girodisc A2-078 2-Piece Rear Rotors for Alfa Romeo 4C

The Girodisc A2-078 2-Piece Rear Rotors are engineered as a direct replacement for the original equipment (OE) rotors on the Alfa Romeo 4C, ensuring a seamless installation without the need for modifications. These rotors are designed to work flawlessly with the OE calipers, maintaining the factory brake bias and ABS efficiency, which is crucial for performance driving.

Construction and Design

These rotors feature a central hat section crafted from U.S. sourced 6061-T6 aircraft-grade aluminum, providing both strength and lightweight benefits. The rotor itself is made from Girodisc's proprietary cast iron, which is poured and machined in-house in the USA. This ensures high-quality manufacturing standards throughout the production process.

The A2-078 utilizes a curved vane design, optimized for cooling efficiency. This design acts as a centrifugal pump, channeling cooling air through the disc to reduce heat buildup during intense braking scenarios.

Floating Mount System

The rotor and hat are connected via a floating mount system, employing ten high-strength alloy steel drive pins, manufactured to Girodisc's specifications and treated with cadmium plating for enhanced corrosion resistance. This setup allows for axial and radial float between the rotor and hat, accommodating thermal expansion while minimizing noise commonly associated with floating rotors. The pins are secured using class 12.9 screws with hardened washers, ensuring a reliable connection under load.

Installation and Maintenance

  • Fitment confirmed for Alfa Romeo 4C (2015-2020).
  • Once installed, the cast iron rotor can be easily replaced when necessary.
  • Sold and priced in pairs.

The Girodisc A2-078 2-Piece Rear Rotors are an excellent upgrade for those looking to enhance their braking system without the complexities of a big brake kit, providing improved performance while retaining the essential factory characteristics.

Proposition 65

⚠ WARNING: Cancer and Reproductive Harm
https://www.P65Warnings.ca.gov

Vehicle
2015-2020
 Alfa Romeo 4C

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Who is Girodisc?

Girodisc is an aftermarket company that was founded in 2003 in Costa Mesa, California. It specializes in high quality brake components and initially catered to one of the best cars in the world, Ferrari. They later expanded their product offering by offering their products to various vehicle platforms. Today, they have become one of the fastest growing companies in the industry.

Continuous Improvement

As the company continued to grow, they relocated to a bigger facility in Bellingham, WA in a 17,000 square foot facility. It is equipped with the latest manufacturing tool available along with a dedicated rotor casting tool and a brake dynamometer. This helps them ensure that each product that comes out of their facility meets their high standard.

The Best of The Best

Girodisc offers some of the best brake components in the market and is known for its two-piece brake rotors. These are bolt on parts that fit directly on the vehicle. They only use the best material available which helps them create the best products.

Performing As Good As Good As It Looks

Their products are designed to have both form and function. Their rotors are made to improve brake ventilation and its cooling capability. It is also lighter which helps reduce unsprung weight. It comes in a variety of color finishes and slot patterns depending on your preferred style.

Purchase Girodisc Products at Vivid Racing

If you are in search of quality brake components and upgrades for your vehicle, then Girodisc is the brand for you. They have brakes designed for both street and high performance applications. To know more about Girodisc, visit Vivid Racing and check out their list of products that would fit your specific needs.



Purchaser acknowledges the Product is for off-road racing use only. The nature of off road racing involves significant risk, and the conditions under which the Product is used and types of use of the Product are many depending on factors such as installation and use. Due to the inherent risk of the activity in which the Product is used, the Purchaser understands and agrees the Seller provides a limited warranty for the Product, specifically, the warranty is limited to the following specification: less than .0015” runout and less than .0003”disc thickness variation.

If Purchaser provides Seller with written notice of any condition inconsistent with the specification set forth above on or before six (6) months from the date of delivery and complies with the return requirements set forth in Section 6, then Seller will, at its election either:
  • Provide a replacement Product, or
  • Refund the purchase price.
This limited warranty does not cover, and Seller will not pay for, or provide, labor or materials that which may be necessary to remove a Product or install a replacement Product. This warranty is limited to the exchange of the Product or return of the purchase price.

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