RS5 Ultra the high perf version lightweight with a smaller engine and side exhaut never made, with the purpouse or potential to get close to the 911 performance (Cs & GT3) just like the M3 E92 GTS and C63 AMG BS, the name Ultra was supposed to represent the pinnacle of performance in Audi division ( even outside prodution models such as the R8 LMS Ultra) , what now a days is "performance" or "competition" sad that this model ( succesor ) gets so easelly outperformed by the RS3
This seems to be a recreation of that concept by ABT




















