you would have to go onto their website and check for your carbs , theres a bit of fitting involved as only the rubber is supplied not the slide ,they give all the instructions along with a online video , bit dearer but a set of mukuni round slide carbs are worth the money , lot better performance and if motor and exhaust are fairly standard the mukuni distributer will get you fairly close with the jetting ,deal direct with the distributer not a local bike shop .. be cheaper and they will have a better idea on jetting ... by the way a new diaphram slide for the xs650 i could only find in england and that was 140 bucks australian plus shipping so a pair was not that much cheaper than a new set of mukunis