A2-149 Girodisc Audi B8, B9 RS5 Rear Rotors

Girodisc Audi B8, B9 RS5 Rear Rotors Developed for the demanding braking systems found on Audi’s RS5, these Girodisc rear rotors combine precision engineering with reduced unsprung weight for sharper response and superior heat control. The two-piece design enhances durability and cooling efficiency while maintaining full compatibility with factory calipers and ABS systems. Vehicle Fitment Audi RS5 (B8, 2013–2015)Audi RS5 (B9, 2018–2023)Compatible with OEM Brembo rear calipers and factory hardware. Performance Engineering for Track and Street The Girodisc system is a direct bolt-on replacement for the OEM rotors—no modifications required. Each rotor features a lightweight 6061-T6 aluminum hat paired with Girodisc’s proprietary cast-iron friction ring. The floating two-piece design allows for natural expansion under extreme heat, maintaining consistent pad contact and brake feel. Curved internal vanes pull cooling air through the disc, greatly improving temperature management during spi