I've got an 11:1 for my 2014 that I'm getting ready to install. Mine is good to run on pump fuel. As far as I know, anything in the 12 range will require mixed or race fuel. I dont have an octane range for ya but it'll be higher than pump fuel.Curious if anyone has installed a 12:1 piston in the new 700 motor yet. I didn't find much via a search, so here I am.
If so, what are your fuel requirements?