The Kawasaki Ninja 650R is a faired standard motorcycle made by Kawasaki since 2006. The 650R and faired ER-6f were introduced in 2006. The motorcycle fits above the Ninja 250R and Ninja 500R models, which already existed in Kawasaki's sportbike lineup, which includes the Ninja ZX models.
In Europe, the Ninja 650R is sold as the ER-6f, the "naked" roadster version is sold as the ER-6n. In 2009, Kawasaki introduced the ER-6n in the USA. The ER-6f differs slightly from the Ninja 650R as it features the passenger handlebars as standard.