1 more thing to concider , my butt is not even knee high off ground , with legs near straight out , thus about foot closer to the ground than u guys and thus less air resistance

but im not saying don't change chain and sprocket , if u have the cash burning a hole , 1 to 1.5 hp , gained from chain swap on a 10 hp motor can be significant , like another 6-7 mph

but do note , article was a 1000 ninja (so less gain to be xpected), but it did say 530 to 520chains not the much more drastic (520 to 428 hd) I use