The Akrapovič sound kit for BMW M4 (F82/F83) covers 2018–2020 model years and is designed to modify the exhaust note for those cars. Offered by Akrapovič as a model-specific kit, it interfaces with the vehicle's exhaust components to adjust valve or resonance characteristics and is sold to match the M4 chassis and model years cited in the product description.
Akrapovic 2018 BMW M4 (F82/F83) Sound Kit