BMW F87 M2 Fi Exhaust (Frequency Intelligent Exhaust) high-performance valvetronic exhaust system is direct replacement bolt on system manufactured out of a high-grade T304 stainless steel that offers an exhilarating soundtrack.
https://www.youtube.com/shorts/G7xdoV57dZs?feature=share
FI Exhaust 2018-2021 BMW M2 Competition Valvetronic Exhaust System
Product description
BMW F87 M2 Fi Exhaust (Frequency Intelligent Exhaust) high-performance valvetronic exhaust system is direct replacement bolt on system manufactured out of a high-grade T304 stainless steel that offers an exhilarating soundtrack.
https://www.youtube.com/shorts/G7xdoV57dZs?feature=share