Roland Sands has spent the last year peeling the skins off dirt bikes, reaching deep inside their body cavities. What he's found are the bikes' unlikely alter-egos.
The Super Single idea is so new that Wikipedia doesn't have an entry -- yet -- but when it does, it might go something like this: "A 450 Super Single is a single-cylinder 450-cc dirt bike that's been converted into an entry-level road racer. The frame, subframe, swing arm, motor and transmission are all stock, but the wheels, tires, suspension and bodywork have all been modified for on-track use and general skulduggery."
General skulduggery? Now ya got me interested...
Actually, it makes perfect sense if you've ever seen a good 500 single show its taillight to a Fastass Sumbichi 4-cylinder on a canyon road. They're light, narrow, and have a low center of gravity.