We've run through some themed bikes recently in Monster Energy Supercross, including a Retro Race in Atlanta and a Military Appreciation Race in San Diego (Check Word On... for some photos from Atlanta 2 and San Diego ).

This kind of got us to thinking about some previous one-off themed bikes and gear. Well, actually, we didn't think of it, but a high-ranking member of a motorcycle brand who loves reading The List every week suggested we do this. Or maybe he just loves seeing yellow and black bikes? We love not having to use our own brains each week and just cueing up the photo archives to make this happen.

Here are some gems we found: