Bikes used to be arranged around how big their engines were: 250, 500, 750 or 1000cc. Then inflation set in, and 500s became 600s, and the 750s became 800s. Unless you were racing in a special displacement grouping, it all seemed a little silly. Didn't we all just want a great motorcycle, regardless of some arbitrary engine size?Read more at :// /2015/cbr650f.aspx#5FseDDj64ORCHBX5.99