The AR downpipes look like they were made from scrap/recycled metal. Look at the build quality of Gintani downpipes. Here are the high res pics....they look beautiful in person, pics dont do justice.
2014 M5...AMS downpipes, BMS tune, lead foot
2011 X5M....Downpipes, exhaust, dyno tuned
2008 Ducati 848....pearl white, Termignoni exhaust
CLS55 and C6Z06 (previous rides)