Based on the championship-winning YZ250F, a lightweight, compact chassis offers improved agility and handling feel in tight, technical terrain, along with better ergos and a more comfortable riding position for less fatigue over greater distances. Yamaha's revolutionary front-intake, rear-exhaust, liquid-cooled, DOHC 4-stroke power plant is paired to a wide ratio six-speed transmission for enhanced cross country performance, making the YZ250FX ready for enduro and cross country competitions straight out of the box. Technical Specification Engine Type: Liquid-cooled, 4-stroke, DOHC, 4-valve Displacement (cc): 250.0 Bore x Stroke (mm): 77.0 x 53.6 Compression Ratio: 13.8 : 1 Lubrication System: Wet sump Fuel Management: Fuel Injection Ignition: TCI Starter System: Electric Fuel Tank Capacity (L): 7.8 Final Transmission: Chain Transmission: Constant mesh 6-speed