yes, and high rise ones, even more so. Also, the finish of your ti frame makes it trickier since most of the ti stems available are a satin finish, and, again, very few in a high rise.
Would have to keep a lookout for an Ibis polished Ti in high rise, or perhaps a Titec. There were some made with a higher rise and a non-satin finish. I've never seen a specialized Ti stem made in a high rise.