The design and construction of the Nur Spec Double Tube exhaust is second to none. They are engineered from SUS304 grade polished stainless steel, with computer controlled precision ‘Tig’ welding. The pipework is mandrel bent which maintains a constant diameter throughout allowing superior flow. Nur Spec DT exhausts are designed for a luxurious look with the dual tube tip design. All Nur Spec DT exhausts have passed the new JASMA regulation in Japan. Please note: The Nur Spec Double Tube name applies to the tailpipe design and not the number of tailpipes, please check the car specific details below. Nur Spec DT, 2 Piece exhaust system Polished SUS304 stainless steel 80mm bore pipwork Quad 101.6mm Tailpipes (2 on either side) Noise level 92DB Impreza, STi, GRB, EJ20T Impreza, GRF EJ25T