Pretty, fast: This stunning BMW from 46Works wins races

On the surface, building a custom and building a race bike are pretty similar endeavors. And there are quite a few builders with track records: in the US, there’s Roland Sands, Michael Woollaway of Deus, and Richard Pollock of Mule Motorcycles. Their road going bikes differ in style, but all have one thing in common: the immaculate construction and detailing you’d expect to see on a track machine. In Japan, the best-known equivalent is Shiro Nakajima of 46Works. When he’s not building vintage cafe racers for his clients, he’s out on the track. Nakajima-san is a fan of vintage racing,...