A four-part series on the 12 motorbikes that changed the world.
Like all consumer items affected by fashion, motorbikes come and go. Technology allows change, legislation forces change. And 'state of the art' is a moving target.
But within that state of design flux, some two-wheelers have emerged as real trend-setters; machines that have changed the way we think about bikes, the type of people who buy them and what they're actually capable of.
Since World War 2, a handful of designs have proved themselves worthy of being called milestone machines. Some have been big sellers, others have shifted the performance goals. Some have simply been the right bike in the right place at the right time.
Here's our pick for 12 motorbikes that changed the world.
Part 1: Ducati 916, Kawasaki Z900, Honda Cub Scooter.
Part 2: Honda 750/4, BMW R80 GS, Harley Davidson V-Rod.