E36 (1991 - 1999)
I replaced the GIUBO "GUIBO" "Flex Disc" with one from URO parts (http://www.amazon.com/gp/product/B0066S2ROM/ref=oh_aui_detailpage_o00_s00?ie=UTF8&psc=1) , while doing my clutch. It seemed to be good quality and similar to the BMW one.
I followed the info I found on installing it correctly...