I want one to.
Vortex at http://www.vortexracing.com clames that they will have one in a week or so. They have been claming that for a month . Same thing at http://hardracing.com
I've put electrical tape on the stock unit. Better but not great.
I had trouble finding one myself and when I did, it cost a small fortune. I had checked out the Sato, quality looked really good but I really didn't dig the funky bends it has in it and the flat ones didn't look all that good and cost way too much. There were a few I saw online that looked homemade and I really didn't want em' on my bike lol.
I got with Eagledriver from the board here and he and his machinist custom made mine. Looks killer and the quality is outstanding. We ended up not using the titanium because it didn't react too good under high heat. The stuff used is some kinda high pressure, high temp tubing that's as light as the ti.