Most of the classic models you can buy today started life as naked bike which has been modified to look more traditional, but without sacrificing all the modern tech and riding experience you would expect from a new bike. They usually feature a single round headlight, simpler rounded clocks, stitched seats, more subtle colour schemes, rounded exhausts, loads of optional shiny bits and often wire-spoked wheels. Closely related are modern cafe racers which tend to start life as retro bikes but with the addition of low bars, a headlight fairing and a pillion seat hump. They are bang on trend right now.