Hello Reto. This complete exhaust is a Porsche factory original 911 RSR but it was 'hotjet' coated by the previous owner. It it NOT a reproduction, since I also had a second complete original 911 RSR exhaust, it was very easy for me to compare them side-by-sidehttp://www.pbase.com/slidevalve911rsr/911rsr_factory_parts_exhaust_system_headers_1