Constructed from T304 grade stainless steel, the Scorpion high flow sports catalyst downpipe is mandrel bent and TIG welded, featuring 3"" / 76mm pipework. It seamlessly fits the Golf 4 GTI, Audi TT 8N, and Leon 1M 1.8T 20V in 2WD versions, connecting from the turbo to the original or aftermarket ca..