YZ450F's revolutionary rearward-slanted-cylinder design is an innovative approach to achieve unmatched mass centralization. Concentrating the motorcycle's heaviest components (engine mass, fuel tank, exhaust system, and airbox) toward the center of the machine, as well as the rotational mass of the valve train, helps achieve superior, nimble handling.The 4-titanium-valve cylinder head is matched to a fuel injection system that provides superb power feeling across the rpm range. The adjustable fuel injection system uses a 44mm throttle body fed by a high pressure battery-less electric pump to ensure optimum fuel atomization and air/fuel calibration for a wide range of riding conditions. The YZ450F instantly adapts to changing air/fuel mixtures depending on altitude and temperature, for an engine that delivers no matter what conditions.The aluminum Bilateral Beam frame features new motor mounts to improve the machines handling character and offers a superb rigidity balance and, with class-leading front and rear suspension, provides unmatched lightweight handling and cornering.Industry-leading suspension with refinements to internal and external components and settings result in superior handling.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.
