1999 YZ400F Information

If you haven't thrown a leg over a YZ400F and taken one for a ride then you don't know what you're missing.

And if that wasn't enough, Dirt Rider named the YZ400F their "Bike of the Year."

That's why the '99 YZ400F is even lighter in weight! And that weight reduction immediately translates into improved handling and an even higher level of performance.

Handling improvements can be traced to a new, lighter swing arm plus, the linkage ratio has been modified.You'll even find there's a larger rear disc brake for outstanding stopping performance.

The '99 YZ400F also has a lighter weight rear hub and now comes standard with Excel rims.These new rims and rear hub help reduce unsprung weight, contributing greatly to the handling.

This revolutionary four-stroke is powered by a liquid-cooled 399cc, 5-valve, dual-overhead cam, dry-sump engine. It actually delivers more horsepower than 250cc 2-stroke machines! The beauty and attraction of this engine is the way it delivers the power. It has an incredibly broad powerband.

Less rear wheel spin translates into rapid acceleration, so you clear jumps right out of the turns and the four-stroke power helps you skim over the whoops more quickly than two-strokes. And because the YZ400F's tractable power is readily accessible, you can ride a variety of lines and pass riders on the inside or the outside of turns.

And while the growl is pure four-stroke, the profile is actually narrower than some two-strokes. The YZ400F's quick-steering YZ chassis and "works-style" suspension help you turn all that power into faster laps with less effort.

Plus the YZ400F is eligible for contingency in one of the largest programs in the industry.

Just one year ago, everyone said it couldn't be done.