The major reason for the victory shut down is all the victory motors did not meet the emission standards that are taking effect. They would have had to redesign every model.
Some info i find interesting are the changes they have made to the 800HO over its run so far
In 2016 they changed the bearing cage on the crank from metal to plastic.
In 2017 they added a slot in the piston to keep the wrist pin c-clip from spinning.
In 2018 they changed the bottom piston ring thickness from 1.4mm to 1.8mm thick. They also added a check valve in 2018 for the oiling of the waterpump sprocket on the crank, this allows the gear to sit in some oil, and when the check valve closes the extra oil will be bled off to the other ports.
Also new larger thermostat with lower temp. So different head, lines and everything.