Huge power can be turned into both a visual and acoustic treat as well: A lot of development work and a double-wall stainless steel structure make ABT rear silencers always perform very well indeed. ABT exhausts have an improved, prominent sound. A powerful look through chromed double rear pipes including an engraved ABT logo. A perfect fit thanks to precise workmanship - for long life though high-quality stainless steel technology. All ABT rear silencers have an EC type approval ? no registration or technical inspection (TV or DEKRA) necessary.