[Goat Blower]

Whether it has Nikasil or not, you would still need to hone it out one way or the other because new rings will not seat to a smooth surface. Considering that on a motorcyle, it's probably a 4-hour job to pull the motor and pistons, I'd try that and if for some reason it doesn't work(small chance), I'd pull it and bring it to your favorite machine shop for the full treatment.