There has been a few changes under that cover besides the bolt. There is an official S&S repair kit PN: 370-0015. (June 2016) I don't know the cost as it was done under warranty.
Indeed it is more than just the bolt...I should have remembered having fitted it a few months ago. Kit includes a new crank sprocket, and nuts for the cam sprockets, the bolt and a couple of retaining washers. I got mine from
Matt's Machine Shop. Do a search on the part number and you'll find it.
