2014 Kawasaki Ninja ZX-6R, What???s in a number? Only everything. Six percent may not sound like much, but it is the displacement advantage the 2014 Ninja?? ZX???-6R supersport has over the rest of the 600cc class. This performance advantage began over a decade ago with the first 636, a revolutionary machine that blew-away the competition???s 600???s and won races against factory 750???s on the track. The 2014 ZX-6R continues family tradition of racetrack dominance and unmatched street cred with its physical embodiment of the family slogan: Performance Counts!