Bolt’s BMW K100: The flying brick finally comes of age

There’s something strange going on with the BMW K-series. A couple of years ago, most bike builders wouldn’t touch one with a ten-foot pole. But the unloved ‘flying brick’ is now becoming modisch—and a few crafty customizers seem to have cracked the code on how to make a K look good. It comes down to availability and pricing: good R-series airheads are hard to find in most markets, whereas the later K-series oilheads are plentiful—if not exactly cheap. This K100 from the Spanish workshop Bolt Motor Company is something of a template. The creases have been ironed out, the lines...