The Kawasaki W650 is a retro standard motorcycle marketed by Kawasaki for model years 1999-2007 and superseded by the Kawasaki W800. The "650" refers to the engine displacement.
In 1999, superseding the Zephyr series, Kawasaki introduced the W650, resembling British motorcycles of the early 1960s, notably the Triumph Bonneville. The W650 has a long-stroke engine of 72 mm bore x 80 mm stroke with an anti-vibration balance shaft and modern electronics. In 2006 Kawasaki added a short-stroke W400 model, in Japan.