The dual polished titanium tips are just one of the features that make the Invidia N1 exhaust system for the 02-06 R53 Mini Cooper S stand out from everything else. Invidia's stainless steel catback exhaust for the 02-06 Mini Cooper S is designed to bolt up to the stock catalytic converter and includes gaskets and bolts. The Invidia N1 system for the R53 MCS features 2.25" piping with very smooth bends to optimize exhaust flow. The N1 style exhaust produces a unique, rich exhaust note, which emanates from the dual, 3", blue titanium tips. The quality stainless steel construction means your Cooper S will be outfitted with the Invidia exhaust for a long time.