Titancycles stems are made to order based on your specifications. Length and rise is completely customizable. The faceplate is available in an H shape (with custom graphics at additional cost) or X shape. Bolts are stainless steel, with 6Al-4V titanium available as an option.
We use four bolts at the handlebar clamp for increased stiffness. Riders have complained that two-bolt titanium stems don't hold the handlebar as securely, resulting in creaking. It takes more time to properly tighten four bolts, but it's worth the effort.