200x front sprocket

Where can i get a 11 tooth front sprocket for my 200x?

dennis kirk, or your local honda dealer

What do you guys think about a 11-40 gear setup? or do you think i should go 11-44? We do mostly trail riding but want to be able to do wheelies. This is still on the 200x Also is aluminum or steel better, we wore out all the teeth on the stock sprocket and just wondering how well the aluminum will hold up.