The 'Classic' came with what they call a 'Low Comfort Seat'. It feels a little like you are sitting into the bike rather than on it. After several years martial arts and a few of life's scrapes my back isn't what it was so I took the seat to a custom seat modifier here in San Francisco and had him add some foam and shape it and then cover it in the cover you see which also has some gel of its own. The result is a nice comfortable saddle. This coupled with the RT wheels changes the bikes ride altogether. You're higher but the ride seems a little more street fighter-ish. That wasn't intentional - it's just a consequence of all the modifications.
