I have an 2002 arctic cat 375 and it is making a grinding sound when your in motion and turn fast. basicly its whenever the four wheeler leans in either direction. it also does it when you go through a rut or anything that makes the bike unballanced. I was told that it could be the drive pully striping out. so I replaced it and it is still doing the same thing. it does great at any speed when going straight and in reverse. only when you turn hard or go through a rut where the bike is off balance does it do this. ANY IDEAS? thanx!!

 

ball joints or wheel bearings? lift the atv off the ground,wiggle each tire back and forth. If there is alot of play,need bearings. Should have no more than about 1/4" of play at the outside of the tire. even that maybe too much.

 

I checked that, someone told me it sounded like a CV joint, im not sure how to check that though, do u know, or know anything else it could be?

 

grab the cv joint and see if there is play. i would jack up the front and spin wheels by hand and try to get it to make the binding sound.