Audi B7 RS4 380mm Front Rotors
Girodisc 380mm front rotors give the Audi B7 RS4 a substantial braking upgrade without requiring a big brake kit. These 2-piece floating rotors are a direct replacement for the factory discs and include caliper spacers for perfect fitment. With a larger diameter than OEM (380mm vs. 365mm), they deliver greater braking torque, improved heat capacity, and a lighter overall feel at the pedal—ideal for both aggressive street driving and full track use.
Each rotor combines a 6061-T6 aluminum hat with Girodisc’s proprietary high-carbon cast-iron rotor rings, all machined in-house in the USA. The internal curved vane design functions like a centrifugal air pump, drawing cooling air through the rotor to stabilize temperatures under repeated hard stops. The result: better braking control, reduced fade, and longer pad life.
Big Stopping Power, No Big Brake Kit Required
Vehicle Fitment
Girodisc A1-100 Features
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Direct bolt-on upgrade: Includes caliper spacers for easy installation—no additional modifications needed.
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380mm rotor diameter: Increases brake torque and thermal capacity over stock 365mm discs.
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Lightweight 2-piece construction: Reduces unsprung and rotational mass for sharper handling response.
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Curved vane cooling system: Actively circulates air through the rotors to minimize fade during repeated stops.
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Floating hardware design: Allows thermal expansion without distortion for consistent pad contact.
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Made in the USA: Machined and assembled entirely in-house by Girodisc.
Girodisc A1-100 FAQs
Do these rotors fit directly to the factory RS4 calipers? Yes. They include caliper spacers and hardware to bolt up perfectly to OEM calipers.
Are these rotors lighter than OEM? Yes. At approximately 22.6 lbs per rotor vs. 25.5 lbs stock, they reduce unsprung mass and rotational inertia.
Do they improve braking performance? Absolutely. The increased size and advanced vane design provide stronger, more consistent braking under heat.
Do I need any special modifications? No. Installation is straightforward—just use the included caliper spacers.
How are they sold? Sold and priced per pair.
Give your Audi RS4 sharper, cooler, and more confident stopping power with Girodisc 380mm front rotors—engineered for precision and performance without compromise.
