2015 Yamaha YZ250FX, Engine FeaturesThe revolutionary, rearward slanted, high-performance liquid-cooled, 4-stroke, 4-valve, fuel-injected engine has been tuned to challenge for race victories in the very competitive GNCC and Hare Scrambles race series.The position of the engine moves the rotational mass of the cams towards the center of the bike which allows for a straight shot, down draft intake and straight exhaust port for ultimate performance. This keeps air box up high, out of dust and mud/water.
