Thoroughly massaged from stem to stern, this quarter-liter carving knife enters the new season with much of the same fine-tuning as its big-bore WR450F brother, starting with invaluably handy, push-button electric start.

In fact, greater ease of use - and precision of performance - shines throughout, with a stronger, lighter-weight frame providing greater lateral rigidity for responsive handling with less flex.

Recalibrated front and rear suspension settings, coupled with a lighter, stiffer swingarm, ensure smoother damping action with more precise wheel control.

And an all-new, lighter-weight rear master cylinder and front and rear disc brake calipers deliver stronger stopping power with greater feel.