ARMYTRIX High-Flow Performance Race Downpipe w/Cat Simulator Audi A7 C8 2018+ARMYTRIX High Flow Performance Race Downpipe w Cat Simulator Audi A7 C8 2018+ Make Model Submodel Year Engine Notes Audi A7 2018 2020 Audi A7 Sportback 2018 2020 ARMYTRIX High Flow Performance Race Downpipe w Cat Simulator Audi A7 C8 2018+ To enhance your vehicle by adding the ARMYTRIX exhaust system to increase power, reduce weight, and improve sound. This precision made performance system delivers more power, especially in the low and mid rev range,