I don't see that it matters. Just display it, man. It DOES matter.... On the right (curb) side of the bike, when facing forward. The bike's "marching" side.
Right side
According to the US Flag Code, the US Flag should be larger in size and (if flying on the same pole), at the top of the pole. If flying the American flag with a state flag, the American flag needs to be on a taller pole than the state flag and displayed on the flag's right side. If flying them on poles of equal size, then flying the American flag on the flag's right side is correct.
US flag goes b the viewer's left
Right side
she made the first american flag for general washington
left
Port
The star in the fourth row from the top, and the fourth star from the left side of the flag
if you are looking up at the stage it is on the left side
When another patch is displayed, the American flag is to be positioned in the superior position (right side) with the union closest to the bearers heart. This is titled as a "reverse flag patch" and signifies or displays the flag as moving forward! Many naturally assume that the flag should be worn in the position closest to the heart. This is true only when there is no other flag or patch to be displayed.
The role of the Australian flag in war is used in the same way that any country would use it. Countries in war like to display their flag to show which side is fighting, and also as a sign of pride.
If the soldier were carrying a flag, the flag would appear "backwards" when viewed from the soldier's right. Thus, the right side patch is backwards. It's the same reason that the flag is painted backwards on the right side of airplanes and other vehicles.
A side stand on a motorcycle is also known as the kick stand. The kick stand of a motorcycle allows the weight of the motorcycle to balance it's weight on it instead of an object or a person.