I see this knob pictured with the STI trim all over the place (see attachment). I know it is STI but I don't know what it is called, or where to find it. If anyone knows where to get one or what model it is I would appreciate it. Thanks.

either magnesium or more likely it's polished aluminum. check ebay

http://www.ravspec.com/pdetails.asp?itemID=9161 :)

well, its not the slobbing kind