Please pay attention:
In principle the flag fits on every new Buzzy and Reppy. Key are the holes in the tube, on the sides. In former models these holes are not in the tube. In the latest versions they are.
If you're not sure whether this flag fits your go-kart, you have to check whether your go-kart has holes in the tube. If there are no holes at the sides, the flag won’t fit.
If the flag won't fit you could consider purchasing the towbar S/M and stick the flag in the adapter at the back side. If you're not sure, please contact customer service.