The 2019 ZX-6R and the Ninja 1000/Z1000SX are both high-performance motorcycles from Kawasaki, but they have different designations and intended purposes. While the ZX-6R is a supersport bike focused on track performance, the Ninja 1000/Z1000SX is a sport touring motorcycle with a more upright riding position and additional touring features.
In terms of top speed and acceleration, the 2019 ZX-6R is likely to be quicker to reach 200 km/h (124 mph) compared to the Ninja 1000/Z1000SX. The ZX-6R is designed for high-speed performance and features a powerful 636cc inline-four engine that delivers strong acceleration and top-end power. It is also lighter and more aerodynamic than the Ninja 1000/Z1000SX.
On the other hand, the Ninja 1000/Z1000SX, while still capable of impressive acceleration, is designed to provide a more comfortable and versatile riding experience. It has a larger displacement 1,043cc inline-four engine, which provides strong low-to-midrange torque for quick acceleration in a wide range of riding conditions. However, due to its heavier weight and less focused aerodynamics, it may not be as quick to reach 200 km/h compared to the ZX-6R.
It's important to note that reaching high speeds requires responsible riding within legal speed limits and in appropriate riding conditions. Speed and acceleration should always be practiced safely and in designated areas, such as on a closed track or during professional events.