Someone in a thread on another forum is talking about using the honda stub shaft on the Predator here: Predator 22hp Charging System.
This is a CNC machined lightweight billet aluminum flywheel for the Predator V-twin. This flywheel weights only 9lbs 7oz. Comes assembled complete with a high power magnet, adjustable center section with timing marks from 10-50deg BTDC and a billet CNC machined aluminum fan. Builder will need to remove the factory steel ring gear and install it on this flywheel.
NOTE: This is a non-charging flywheel. There are not magnets in the back for a charging system. The stock OEM charging coils will need to be removed to make this fit.