Some great subjects with a lot of potential, but I feel this shot is rather plain. Standing them next to each other and shooting from the fron, perhaps from a low perspective, might lend the subjects a lot more visual impact.
As this appears to be a set up composition, you could have improved it by arranging the bikes more symmetrically around the expansion joint and facing the sides perpendicular to your line of view instead of perpendicular to the fence. Additionally, the image could benefit from color and lighting corrections.