The Kawasaki Ninja ZX-6R 636 is a version of Kawasaki's ZX-6R with a larger 636cc engine. It uses a liquid-cooled 636cc in-line four.
Stronger in the midrange than a 600, it suits riders who want a road-friendly supersport bike. Rivals included the Yamaha YZF-R6 and Triumph Daytona 675.