It is a standard replacement sprocket for a Stihl. It is not an offered option.My stihl Dealer didn’t even want to sell me an 8 pin, there’s no listing for them for the 500i in Australia. Are they a standard option overseas?
Im only running a 20” bar.
I understand your hardwood is much harder than ours. You will need to decide if the cost of experimenting is worth the risk of failure.
Ron