Introduced for the 2004 model year, this liter-class Ninja superbike arrived as a new flagship road-going sport model aimed squarely at the race-replica class. It quickly became one of the most recognizable names in modern superbike racing and street performance, with a long-running development story shaped by circuit competition and periodic chassis, electronics, and styling updates rather than wholesale reinvention.
The early version established the model’s identity as an aggressive, track-focused inline-four machine, and later generations refined that formula with sharper handling, better controllability, and increasingly sophisticated rider aids. Over time, the line expanded to include higher-spec variants, most notably the more track-oriented ZX-10RR, while the core nameplate remained the brand’s mainstream superbike offering.
Its history is closely tied to competition success, especially in production-based superbike racing, where the platform’s development has repeatedly fed back into the street model. That racing connection helped make it a benchmark for riders who wanted a literbike with a strong factory-backed performance pedigree, and it remains one of the most enduring supersport nameplates in the modern era.