Why do people insist on calling track bikes "keirin bikes"? There are no frames made anywhere in the world (including here in Japan) soley for the purpose of riding this one track event. Keirin riders in Japan ride track bikes - antiquated track bikes, but track bikes nonetheless. Perhaps it's fair enough to use it as shorthand when you mean an NJS-approved bicycle. But calling a Kilo TT a keirin bike is like calling a Nissan Cedric a Le Mans racer.