A2-187 Girodisc Audi 356mm Rear Rotors
These Girodisc 2-piece floating rear rotors are a direct replacement for the OEM 356x22mm rear rotors used on Audi C7 S6, S7, RS6, and RS7 models. Designed for serious enthusiasts and track-day drivers, they deliver exceptional braking performance while significantly reducing unsprung and rotational mass.
The Girodisc system maintains the factory brake bias and ABS calibration, making it the ideal performance replacement for stock discs. The 2-piece design allows the rotor rings to expand independently from the aluminum hats, improving heat dissipation and reducing stress-related cracking under repeated high-temperature conditions.
Advanced Construction
Each rotor ring is machined from Girodisc’s proprietary high-carbon iron alloy, developed for exceptional thermal stability, durability, and friction consistency. The 48 curved directional vanes work as internal air pumps to cool the rotor efficiently under load. The hats are CNC-machined from 6061-T6 aircraft-grade aluminum and anodized black for corrosion resistance and lightweight strength.
The fully floating mount system uses precision-machined steel drive pins that transfer braking torque while allowing both axial and radial float. These are secured with cadmium-plated hardware, Belleville washers, and spring clips for quiet operation without the rattle often associated with race-type rotors.
Vehicle Fitment
- Audi S6 (C7, 2013–2018)
- Audi S7 (C7, 2013–2018)
- Audi RS6 (C7, 2013–2018)
- Audi RS7 (C7, 2013–2018)
- Other Audi models using 356x22mm rear rotors
Technical Specifications
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Part Number: A2-187
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Position: Rear
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Rotor Diameter: 356mm
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Rotor Thickness: 22mm
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Minimum Thickness: 20mm
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Material: High-carbon cast iron rotor, 6061-T6 aluminum hat
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Vane Design: 48 curved directional vanes
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Drive Pins: Cadmium-plated high-strength steel
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Weight: Lightweight 2-piece design reduces unsprung mass
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Sold/Price: Per pair
FAQs for Girodisc A2-187
Do these fit both standard and performance package models? Yes, they fit all C7-generation Audi S6, S7, RS6, and RS7 models equipped with 356x22mm rear rotors.
Are they rebuildable? Yes. Replacement rotor rings (part number D2-187) are available for when the iron rings reach minimum thickness or wear limits.
Do they make noise? No. Girodisc designs its floating hardware with spring clips and Belleville washers to eliminate rattling during street use.
Will they change braking balance? No. The Girodisc design maintains factory brake bias and ABS operation while offering improved cooling and reduced weight.
Upgrade your Audi’s braking system with Girodisc’s lightweight 2-piece floating rotors—precision-engineered for performance, rebuildable for longevity, and trusted by professionals and enthusiasts worldwide.
