Black Bearing D21 Headset Bearing — made in France. The Black Bearing D21 headset bearing is an essential component for any road bike. Manufactured by the…
Black Bearing D21 Headset Bearing, sold under the Black Bearing brand, is manufactured in France. That origin is recorded at the "Internet-Sourced" evidence grade.
Origin evidence last reviewed 2026-10-24.
Every origin claim on Hesperia Market is graded by the strength of its evidence and linked to its sources.