The 2002 YZ450F is the top-drawer dirt bike in Yamaha's line-up , and it comes with a new 449cc engine, with liquid cooling and a 5-titanium-valve architecture, and redesigned automatic ...

We’ve got detailed rundowns of the latest dirt bike models, ranging from classics like the Honda CRF450R and Yamaha YZ125 to new motorcycles including Triumph’s TF 250-X and the latest ...