Two performance kits prepared by Sportec for Audi RS6
Audi RS6 received two performance kits from Swiss tuner Sportec. Baptized Stage One and Stage Two, the packages offer for the German model quite alot extra power. Swiss tuning house Sportec has released two performance packages for the Audi RS6. The modifications are available for both sedan and break versions. In the series version, Audi RS6 comes with a V10...