1 1/8" threadless tapered roller bearing headset.

Solid Bikes — Headset

obscure frenchies are getting harder and harder to find, and the cheapy chinese one is pretty much the same price as this straight up banger. off the market when it ran afoul of the cane creek split ring patent, the patent has expired and the headset is back.

+$15 to ship.

Solid Bikes — Headset