YZ450FXTOP FEATURES YZ450F Based GNCC and Hare Scrambles Focused RacerThe YZ450FX is developed from Yamahas flagship motocross modelthe YZ450Fwith many added features and unique settings that make the YZ450FX the ultimate GNCC Woods racer. High Performance Four Stroke EngineThe compact, powerful YZ450FX engine includes all the same race developed technologies of the class defining YZ450F motocrosser, tuned for cross country performance. A host of go fast