But bring a small inch low performance Buell into the fray and you're lost?
Oh, because a note tucked into the box says you shouldn't.
My guess is that someone tried to install the belt on a Blast with the old pulleys, or just didnt know what they were doing, and raised hell with Drag Specialties, so they just put that note in the box (next to the note that said "Items sold for off-road use only are illegal in many states and provinces and are intended for racing vehicles which may never be used on a public road".) to protect them from those who shouldn't be allowed near tools in the first place.
Here is one that J&P Cycles claims fits a Buell Blast. It also claims it fits 2000 models and makes no note of whether you need the updated pulleys to make it work... although Magdelyn says it wont.
https://www.jpcycles.com/product/602...nal-drive-belt