What is the best mods for Yamaha FZ8?

Customizing motorcycles is something that many riders partake in, and the Yamaha FZ8 has become a nice platform to do so. In the debate among owners, there is usually the question of which modification provides the most bang for the performance or comfort or aesthetic buck. Suspension upgrades, adapting an exhaust system, ergonomic changes and, of course, cosmetic enhancement are common areas of focus. The trade off between making the bike more capable, and keeping it reliable and touchable every day is a frequent discussion. While some riders suggest riders should leave the bike mostly stock — the bike as it came from the factory — others enjoy the process of customizing every aspect of the bike to their own liking. Personal experiences with different mods are often discussed, their effect on bike character, and the cost effectiveness of various upgrades.