That's my favorite yet! Looks like an old photo at first glance. I really like how you capture folds in the clothing. That's something I don't get myself.
I don't know if you are looking for critique or if I'm qualified to give it. Just in case here are a couple things:
The rear tire looks funny to the left of the white lettering. It could be a shadow you intentionally painted, but it seems to lose it's consistent oval shape right before dissappearing behind the lower fairing.
On another note the picture, and others, seem to lack contrast. Maybe through use of darker shadows or clever background colors you can make it stand out more. In this particular picture all of the dark is in the lower left. On the upper right is the face shield and the background subtly darkens but it doesn't seem to be enough. Just my opinion though. I still think the picture kicks *** if just because the level of detail on the bike to the rider. From the holes in the disks to the logos on the shirt.