The Ninja 400 is a great beginners bike. If you want a new beginner bike, Ninja 400 will be a solid choice. I think buying a used cheap bike, and then upgrading to a bigger bike soon after is a good path. I started on a Ninja 650 and feel like I would have gotten bored of a 400 or smaller really quickly. Start bike. Bike runs at high idle ( but it shouldn't be at 6k, maybe 3-4k). Let run for about 30 sec to a minute (sometimes more) the push choke lever forward. Idle will drop (normal engine idle should be about 1200-1300 RPM's). If not then adjust the idle by using the adjuster ton the left side of bike. Good luck. NINJA 400. Starting at $7,099 MSRP NINJA 650. The Ninja ZX-4R and Ninja ZX-4RR reach max power at 11,500 rpm in Canada due to noise regulations. Developed with input from Kawasaki’s Ninja ZX supersport machines, the engine has an oversquare bore and stroke of 57.0 x 39.2mm and is said to deliver impressive power and a claimed peak of 26. Vay Tiền Nhanh Chỉ Cần Cmnd Nợ Xấu.

ninja 400 rpm limit