Kawasaki Ninja ZX-14RComing in second is the Ninja ZX-14R with its 186 mph (299 km/h) top speed, which it can push up to 200 mph (321 km/h) when unrestricted. Debuting at the 2005 Tokyo Motor Show, the Ninja ZX-14R quickly took over the mantle of Kawasaki's flagbearer from the ZZ-R1200 (ZX-12C). The Ninja ZX-14R remained relatively unchanged for six years up until it was given a major overhaul in 2012. The revamped ZX-14R incorporated a sleeker look and upgraded ignition, exhaust system, and three-mode Kawasaki traction control.However, the Ninja ZX-14R inevitably had its full potential stifled due to the unofficial gentleman's agreement between European and Japanese manufacturers to limit the top speeds of future motorcycles to 186 mph (300 km/h). This agreement has been somewhat overlooked from time to time, however. Equipped with a monstrous 1,352cc engine, which it has since updated to 1,441cc, the ZX14R should be treated with the utmost respect. Riding anything around the 1,000-cc range can be quite challenging, even for experienced riders, and with the ZX-14R's 0 to 60 mph in 2.85 seconds, it is not a motorcycle that you should underestimate.