I just got an 07 sportsman 500 HO. I've noticed on the top end it is lacking power. Anyone know where to get mods to make the atv faster? thanks.

 

Without going into engine work, the best bang for the buck is probably an aftermarket pipe. That should give you a little better all around performance with out sacraficing the top end that happens with a clutch kit. You can also consider the K&N filter but I don't think that makes a noticeable difference.