Other than basic maintenance, I've found that everything else you do to this bike is an option. Upgrades really depend on how you are using the bike, enduro, adventure, commuting, etc. Get your suspension and controls setup for you. A more comfortable seat would be good. The KTM comfort seat or Seat Concepts seem to be the most affordable options. If you ride at night, the Cyclops Adventure Sports LED head light-bulb conversion works well and is not expensive. The Wings muffler is nice if you want less weight, sweeter sound, and less chance of burning yourself on cat-equipped stocker.