The Kawasaki Ninja 250R (codenamed EX250; previous generations had market-specific names) is a motorcycle in the Ninja sport bike series from the Japanese manufacturer Kawasaki originally introduced in 1986. As the marque's entry-level sport bike the motorcycle has undergone few changes throughout its quarter-century lifetime, having received only three substantial redesigns. In some markets the Ninja 250R has been succeeded by the Ninja 300.Japanese motorcycle manufacturers produced a sporty, high-revving, 4-cylinder, 4-stroke 250cc motorcycle capable of producing up to 45 hp (34 kW)