2015 Yamaha YZ450F, 2015 YAMAHA YZ450FA WINNER RIGHT OUT OF THE CRATE.Completely re-engineered just last year with new EFI engine, and entirely new frame, minimized body work and new suspension components providing for excellent mass centralization and class leading 450 power with 250-style handling.The critics agree: the YZ450F is the one to beat.Standard Features May Include: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.
