you dont need a "kit" i went that route with dyno jet SAVE your $$$ get individual jets ...dealer should be able to get them..do carb jetting search here to give you more insight( from others trial and error)on where to start and the "spacer mod"..allen screws for the bowl and the top of your carb ,stock screw heads will strip(impact driver needed to get mine off my 06)..once you have the allen screws(ss are best)  and spacer mod you dont have to pull tank or carb to change jets as you fine tune your ride...