[MENTION=149088]brockd15[/MENTION] Simworks (by Nitto) is exactly what you're looking for. Normal 1 1/8 threadless stems but made from slender cromo tubing. Comes in TIG or fillet brazed, chrome or black, a variety of clamp configurations and bar diameters. Get one and use it with a normal 1" to 1 1/8" threadless adapter.



https://sim.works/collections/stems-simworks-by-nitto