It's a 1991. What jet would be suitable for the older carbs? I've seen some conflicting info on the gearing. Some people gear down saying the bike has more grunt at lower RPMs to push the bike to a faster overall speed, but it makes it buzzy. Other say to go a larger sprocket to cut the vibration, but then struggles a bit on climbs and what not. I haven't actually bought the bike yet, more or less doing pre-purchase research. I'm also eying a 98 XR650L, but there is a $750 price difference and the TW is closer to my budget (which is actually nothing).