2010 Yamaha WR250X User Ratings

Directly descended from our YZ motocrossers and WR off-road machines—even the original Yamaha YA-1 of 1955—the Yamaha WR250X is here to make Yamaha’s off-road prowess street accessible. First use of fuel injection on a 250 Yamaha on/off-road bike. The system relies on input from a crank sensor, intake air pressure sensor and throttle position sensor feeding a compact ECU to provide optimum combustion.