Equal length, long tube, mandrel bent tubing with a merge collector to further improve exhaust gas flow, reduce system back pressure and optimize exhaust gas scavaging and cylinder filling. Facts: - equal length headers with long tube design - 1.77" (45 mm) primaries - 2.5 tubing (63.5 mm) collector - t316 lightweight stainless steel - made in Germany for 997.1 models without the Porsche sport exhaust (pse). These headers are manufactured by m&m exhaust, gmbh in Germany who is no stranger to Porsche racing exhausts. They are Germany's premier racing manufacturer and have exhaust systems running in these series: Porsche super cup, Carrera cup deutschland, adac GT masters, alms / lms, vln, fia GT, imsa and rall...(choose a part on the right to read more)
General Fitment
911 2005-08