Invidia N1 series exhaust systems feature a full stainless steel piping and muffler constriction with mandrel bent piping to give you a complete 3" system. These also feature a high profile Titanium tip, that gives you the aggressive look that is sure to draw attention. Addition of a high flow resonator in the mid pipe makes this a great alternative to the Racing system, with out as much noise. However by no means is this exhaust quiet! Piping Dia.:76mm(3 Inch) Tip Dia.: 101mm