2018 Yamaha YZ250F

Innovative Engine Design A liquid-cooled, DOHC 4-valve, fuel-injected engine with forward-positioned downdraft intake delivers class leading engine power. This design allows for unmatched mass centralization, concentrating the motorcycle’s key components—engine, fuel tank and exhaust system—toward the center of the motorcycle achieving light and nimble handling performance. Durable Transmission The transmission gears, dogs and shift mechanisms are designed to smooth gear changes and improve durability under the heavy demands of motocross racing. Bilateral Beam Aluminum Frame A Yamaha’s renowned bilateral beam aluminum frame features compact overall dimensions that balance minimal weight with the strength and rigidity needed for race-winning performance. This frame features a forged section at the swingarm pivot and engine mounting brackets for tuned responsiveness, handling and unmatched lightweight feeling. Refined Suspension Settings Industry-leading, fully adjustable KYB® spring-type fork with speed sensitive damping features advanced valving for improved suspension feel and balance. The linkage type rear suspension features a KYB® rear shock also features settings optimized for ideal damping characteristics. GYTR® Power Tuner Ready Accessory GYTR Power Tuner lets owners adjust air/fuel mixture and ignition timing maps to match engine performance characteristics to the rider and track conditions in a matter of seconds with the push of a few buttons, as well as monitor engine diagnostic codes.