This is a look back at the evolution of Yamaha’s game-changing line of open-class four-strokes from the first YZ400F in 1998 through the modern fuel-injected YZ450Fs.

This is a look back at the evolution of Yamaha’s game-changing line of open-class four-strokes from the first YZ400F in 1998 through the modern fuel-injected YZ450Fs.