2015 Yamaha WR250F, Key FeaturesAll-New for 2015 with a revolutionary rearward slanted 250cc, liquid-cooled, DOHC 4-stroke with 4 titanium valves based on the 2015 YZ250F, with an added sixth gear and wide ratio transmission, among other modifications, make it perfect for Enduro competition.Nearly the same bilateral beam frame that is found on the championship winning YZ250F is used on the WR250F. It places the engine and fuel tank close to the center mass of the bike for extremely light and nimble handling character.A Keihin 44mm throttle body fuel injection system is tuned for Enduro riding ensures smooth throttle response and easy starting in nearly all conditions. Plus the electric start button reduces rider fatigue.