美国采购需求：头盔，摩托车头盔，全盔，半盔，越野头盔

I'm reaching out to inquire about replacement parts for the visor mechanism of a specific helmet model. In particular, I'm looking for the broken pivot and ratchet base plate components, as they need immediate replacement for our operational needs. Could you please provide me with details regarding the availability, pricing, and lead time for these parts? It's crucial for us to get these replacements as soon as possible, so any assistance you can offer would be greatly appreciated. Looking forward to your prompt response!