chain fitting bike properly
you shouldn't pay to much attention to what the manual says on chain sizes UNLESS, all of your sprockets are stock. if stock, go by the book. if not you need to know what gearing you are or will be running and adjust links accordingly. when in doubt i always run a couple of masterlinks in my 91'kx 250's chain just so adjustment is easier for such things as chain stretch. if i'm correct the stock gearing is 14 tooth front and 48 or 49 tooth rear. meaning 120 links is stock for this gearing. keep in mind that the further back your rear axle sits in the swingarm the more straight line stability you will have. the further forward, the sharper the turning abilities.