It's Dynojet that offers the Stage 2 kit. Factory Pro offers a single kit with multiple sizes of jets, and is the one that I always recommend. It's just easier to get your bike tuned right with Factory Pro than with Dynojet.asphalteater said:I have an 01 750 that I would like to rejet for better performance. Can anyone offer any suggestions of the best kit? I am thinking the Factory stage two. I have a set of Ferraci c/f slip on's and will put on a K&N with the open box.