Originally Posted by
SpeedofLite
What? Wait a minute. Are we seeing the chain ring inside of the chain guard as if the drivetrain was on left side of the bike?
You can't get that image by flipping the negative from a photo taken on the right side of the bike, can you?
Something's wacky, but what?
Pretty common for editors to flip a photo to get a more desired composition. In this case someone preferred to have the riders appear to be going from left to right across the cover. So the photo was flipped with the result that the drive trains appear to be on the left side of the bikes.