Well it's a Chater-Lea headset as im sure you'll have gathered. It's most likely 1", unless fitted to a tandem/trade bike. I can't give you the official term as i don't know where the Guvnor's hidden his brown brothers catalogue!
@randombadger69 started
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Well it's a Chater-Lea headset as im sure you'll have gathered. It's most likely 1", unless fitted to a tandem/trade bike. I can't give you the official term as i don't know where the Guvnor's hidden his brown brothers catalogue!