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 rallye meistershaft. They also produce the current and past rsr, cup r and super cup exhausts for weissach. They are tested comprehensively for flow characteristics, flow rate, thermal stress, cracking, and longevity. Whether you are looking for the perfect set of headers for the street or one that can handle abuse at the track, look no further.

This item may need to be sourced from Germany and would take 2-4 weeks to arrive. Once ordered it cannot be canceled. Please call to check stock or request expedited shipping.