1. Tires! Stock ones are garbage
2. Suspension. Rear shock is crap, front forks are even more crap (but hey, we all knew this when we bought it! lol)
3. Get rid of the rediculous drop in power from 3k-6k.
But... as was said before: I love how cheap the MSRP was on this bike and when I bought mine a year ago I practically stole it off the showroom floor. They sell bikes like this to two kinds of people: 1. the person who will do nothing to it and be perfectly content in riding their very nice looking stock FZ8. 2. the person who is going to mod their bike and doesn't really care what the stock components of the bike are because they are going to replace them as quickly as possible! (this would be me, and pretty much everyone else on here)