It’s been a while since any manufacturer offered a mass-produced tiny four-cylinder sport bike. This week Kawasaki finally launched the new highly-anticipated Kawasaki Ninja ZX-4RR, a 400cc four-cylinder sport bike.
Many of us started riding on little four-cylinder bikes. Many of us will remember, fondly, CB400Fs or 350Fs, or if you were lucky enough, maybe you got to ride a Suzuki GPZ400R or GS500. They weren?t powerful, but they were fun.

One of my first bikes was a 1976 Honda CB550, with a four-into-one exhaust, that sounded like a banshee when I got on the pipe. That bike (I apologize for the old photo) was fun, nimble, and let me grow into a higher-revving motor. That is why the new ZX-4RR matters. Without learning how to tap that horsepower then, I wouldn?t feel comfortable on a racetrack or on a high-powered bike now. The little Kawasaki Ninja ZX-4RR will likely inspire a legion of new motorcycle fans to go out and buy it, not because it?s cool (it is) or light (it is), but because they can learn how to handle a bike as the power builds. Four-cylinder bikes build power in a special way, and many times it’s not linear. They feel broken and slow down low, then you get a burst of speed as they come on the pipe.

The little oversquare 400cc in the new Ninja should do that, too. The Ninja has light cast aluminum pistons that allow for quick-climbing revs, which means you?ll have to pay attention to the 11,500 rpm redline. It?s backed up, in KRT Edition tr...