Not available in USA. That is part of the Highline package. I have them in my Highline 750 iL
As there were less than 5.000 Highline built, you can imagine how rare they are.
I have them in both of my Highline and a spare set together with my friend Take
But they need to be refurbished as you can see from these pics
http://www.bimmerboard.com/forums/posts/95520
New ONE of them will set you back about 1.200 $
http://www.realoem.com/bmw/showparts...76&hg=52&fg=10