Fitment Information Nissan 350Z (2003, 2004, 2005, 2006) Specs & Features Carb 50 State legal (see status for C.A.R.B compatibility) T409 Stainless steel Ceramic Coated in the U.S.A Direct bolt on design CNC machined Flanges Dyno tested for maximum performance Tig welded 12-month warranty C.A.R.B EO NUMBER: D-370-14 Primary Runner Inner Diameter: 1.75 inch Collector Diameter: 2.1 inch Product Description Dyno tuned and tested for maximum performance. Comes in T409 stainless steel (including flanges). CNC mandrel bends with TIG welded fittings deliver perfect fit. Equal length primary piping ensures optimum tuning for more power across rpm range. Unique merge collector design ensures smooth exhaust gas flow. Direct bolt on installation with comprehensive installation instructions, all necessary hardware.