first off a four wheeler will only go in a certian amount of snow. i have a grizz 660 and we have 30" of snow in two storms so far andf the grizz says no it dont wanna go through it. i used to race on grass w/ my drag sled but i need a crank for it so this summer was a no go. and centuri try 106 in the quater!! top end on mine is 116 on radar after that its completley shifted out and starts to over rev.