Akrapovic Audi C8 Stainless Steel Link Pipe (RS6 Avant & RS7 Sportback)The Link pipe set (SS) L AU SS 6 is a mandatory product for the Akrapovic Audi C8 Evolution Line Titanium Exhaust System (RS 6 Avant & RS 7 Sportback). The system is split into two codes because of packaging requirements. If the Evolution Line exhaust system is combined with the Downpipe Link pipe set (SS), the link pipe set L AU SS 6 is not needed. COMPATIBILITY Audi C8 RS6 Avant (2019+) Audi C8 RS7 Sportback (2019+)