My bike is street legal(ish) and set up for supermoto, but the 17s don't have a speedometer drive (not like it would be accurate anyway). While the Vapor has been around a while, I haven't heard of anything else in a similar price range that people like better. Trailtech lists 2 different versions for it - one that's for generic inverted fork bikes, and another that's for 95-04 YZ/YZF/WR. The 05+ uses a different model. Can anyone tell me what the difference is, and which I should buy? Or is there some other option that I should go for?