GiroDisc Front 380mm 2-piece Rotor Upgrade for Audi RS4

Part #: A1-100

Overview

The Girodisc front rotor upgrade is designed to enhance the braking performance of your Audi RS4. Crafted as a direct replacement for the original equipment (OE) disc, this 380mm two-piece rotor features a larger diameter than the stock 365mm, providing increased braking force and improved cooling capacity. The rotor's lightweight construction, approximately 21.95 pounds compared to the OEM 27 pounds, reduces rotational inertia and unsprung weight, resulting in quicker acceleration, sharper handling, and more responsive suspension dynamics. The central hat section is made from durable 6061-T6 aircraft-grade aluminum, ensuring strength and heat dissipation, while the rotor surface is engineered for optimal friction and longevity. This upgrade is ideal for enthusiasts seeking improved braking response and reduced weight without sacrificing durability or reliability.

Key Features

This rotor features advanced materials and thoughtful design to support high-performance braking:

• Constructed from high-quality cast iron for excellent heat resistance and durability
• Two-piece design with a lightweight aluminum hat for reduced unsprung mass
• Precision-machined vented and slotted surface for enhanced heat dissipation and debris removal
• Designed to fit directly with OEM calipers and hardware, ensuring straightforward installation
• Enhanced cooling capacity to support repeated high-performance braking
• Reduced rotational weight for improved acceleration and suspension response
• Corrosion-resistant coating for long-lasting appearance and performance

Construction & Design

The rotor's two-piece construction combines a cast iron friction surface with an aircraft-grade aluminum hat, bonded and bolted together for strength and thermal management. The vented and slotted surface design promotes efficient heat dissipation, helping to maintain consistent braking performance under demanding conditions. The precision machining ensures a perfect fit and smooth surface for optimal pad contact.

Driving Feel & Feedback

This upgrade provides a noticeable improvement in braking response and pedal feel, offering more confident stopping power during spirited driving or track use. The reduced weight enhances suspension responsiveness, contributing to a more engaging driving experience.

Installation & Fitment

Designed for direct bolt-on replacement, these rotors are compatible with OEM calipers and hardware. Proper installation should be performed following standard procedures, and fitment should be verified against vehicle specifications.

What’s Included

The package includes the two-piece 380mm front rotors with pre-installed mounting hardware and caliper spacers necessary for proper fitment on the Audi RS4.