Yeah they can move. When I put the 13t front sprocket on and go offoad, I often find myself getting into a mess before I know it, and I can climb the gnarliest hills around here without even thinking about it. Accidental wheelies if you're not used it :) I don't know what ratio mine is but the receipt from last rebuild just says "WISECO HI-COMP" as one of the parts. Me and my friend were racing around after work one night. he has some v-star 950 thing, and he said his speed was reading 105+ and I "flew by him"
Don't know how accurate his speedo is and I wasn't looking at mine either, but I have no business to go nearly that fast on anything again
that was with stock gearing