XTerra T-Shirt Design

[Zen]

I don't think the mid-range grays will work.
The solid black rider in the middle panel is good and bold though it may end up looking like a traffic sign if it's oversimplified...

I think this would be good as a poster but a t-shirt should be simple and bold.
I like the way the three words are at an angle, it conveys something, I don't know how to phrase it.

one of my favorite shirts is for a 100 mile motorcycle race thats no longer run called the Blackwater 100. The image was of a skeleton on a dirt bike with the motto "throttle or die"