It appears you're interested in specifications for the Yamaha WR250X. This Super motard model is powered by a Titanium intake valves Single cylinder, four-stroke engine with 250.00 ccm (15.26 cubic inches) of actual displacement before 11.8:1 compression. Fueling is metered via Injection allowing this machine to produce its 30.31 HP (22.1 kW) horsepower and 23.70 Nm (2.4 kgf-m or 17.5 ft.lbs) torque. According to our records engine heat of the Yamaha WR250X is moderated by Liquid. You'll need to get familiar with the 6-speed transmission and pay attention to final drive Chain maintainence. Our best information shows that the front tire size is 110/70-17 and the rear is 140/70-17 . The entire package is supported by the frame, . We know you like to go fast or cruise all day, but when you need to stop, you'll be dependant on Single disc front brakes and Single disc rear brakes. The Yamaha WR250X was launched in 2011, and we're happy to know (or assume) you've got one in your garage. To help you keep your ride in tip-top shape, consider purchasing an owner or service manual.