drive clutch

ve a 99 sportsman 335 4x4 and I need some parts for the drive clutch. I need the two surfaces that basically puts tension on the belt, circled in red below. Is it possible to just buy those two pieces without spending $400 on a whole new assembly? Reason I need just those two as the clutch is fine but those pieces have wear in them from 3k miles and is allowing the belt to slip.