Dynojet has created a belt life extender for your 16-up Polaris XP Turbo.  The kit includes spacers of varying thickness to modify the tension of the CVT drive belt, as well as eliminates the need for the factory circlip and recessed washer.  Part number 28700002

A properly adjusted drive belt will help maintain desired gear ratios, will eliminate vehicle creeping at idle and will allow for smoother shifting and drive gear engagement. It can extend the life expectancy of the drive belt and can help compensate for belt wear and manufacturing variances in the belt and other clutch components.