Abt Sportsline is a motor racing and car modifier company based in Kempten im Allgäu, Germany.
ABT mainly deals with Audi and the leading brands associated with the Volkswagen Group – Volkswagen, Skoda, and SEAT – modifying them, using sport-type suspension, engine power upgrades, light-duty wheels, aerodynamic enhancement and more.
In the above video you can see the RS4-R model variant:
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