FSP

Hey all, I have an '05 R6 engine installed to a formula series race car, which I'm looking to change the front sprocket on. I've been looking for somewhere to buy a 11t or 12t front sprocket but dont seem to be able to find one. I have seen mentions of these sprockets on forums but the smallest I can find is a 14t from Talon (which we already have). Can anyone help as to where the best place to look/ask is? Thanks