The Kawasaki ZZR1400 (Ninja ZX-14 in North America) is a motorcycle manufactured by Kawasaki and is currently their most powerful sport bike. It was introduced at the Tokyo 2005 show and released for the 2006 model year as a replacement for the ZX-12R. The ZZR1400 is capable of accelerating from 0–60 mph in 2.5 seconds. The top speed is electronically limited to 186 mph (299 km/h). This limit has been in effect on both Kawasaki and Suzuki sport motorcycles since 2001 when both companies realized that true technological competition between them achieving increased maximum velocities would only allow governments to justify their existence by instating ever more restrictive laws.