Innovative Engine Design: The revolutionary rearward-slanted-cylinder design of the YZ450F allows for a straight down-draft intake with a symmetrical port layout for smooth controllable power delivery throughout the RPM range. This engine design also achieves unmatched mass centralization, for light and nimble handling.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.Launch Control System (LCS): LCS optimizes engine output for quicker, smoother race starts every time, boosting controllability out of the gate.
2015 Yamaha WR450F, Key FeaturesA YZ-bred advanced aluminum frame - carefully engineered from castings, forgings and extrusions—enhances handling while retaining legendary Yamaha feel and characteristics.Highly evolved five-titanium-valved engine starts with the push of a button.Highly functional digital enduro computer offers speedometer, clock, tripmeter, etc., in basic mode—or pace management functions such as timer, distance-compensating tripmeter, average speed, etc., when switched to race mode.The WR450F is green sticker approved for California.