... SS, TIG welded, mirror polish 2.1.8mm thinkness for pipe,12mm thickness for flanges 3.Strict quality control Condition:AUDI ... .7L DOWNPIPEBeautiful weldjoint, flat flange and clean air holesTurbo Down pipe in Mandrel Bend Piping with TIG WeldNew bolts,nuts and ... .7L HEADERSSKP-7400AUDI 2.7 DOWNPIPESKP-8046AUDI 2.7 CATBACK EXHAUST DOWN PIPE FOR AUDI 2.7