Factory fletching is almost always for a right bevel.
The standard setup is to match the bevel to the fletching. Viewed from the rear a right bevel KuduPoint Contour head will want to rotate clockwise upon impact, a left counterclockwise. Most choose right bevel.
KuduPoint Contour broadheads are very neutral in flight, so very few will see any difference in flight between left and right bevel on the same fletching setup. Detailed testing may expose some differences for your unique setup.
The vast majority of setups will use right bevel and most or all factory fletching is right helical.
Note: This video was produced prior to the introduction of our left-bevel broadheads.