One of the most popular used Kawasaki motorcycles for sale, a blue 2022 Kawasaki Ninja ZX-6R, is shown on a racetrack.

While the 600 class is dwindling these days, models like the Ninja ZX-6R defy the odds and are among the most popular new and used Kawasaki motorcycles for sale. First introduced in 1995, the ZX-6R quickly established itself as one of the most affordable and versatile bikes in the segment. For the first time, a supersport bike didn't require riders to compromise or choose between performance and affordability.

What can you expect from the legendary Ninja ZX-6R? As your Kawasaki destination, the team at SF Moto has that answer and more. Here's a closer look at the most significant changes to the Ninja ZX-6R over the years and our top picks to help you find the perfect bike for your next ride. The Ninja ZX-6R promises and delivers an engaging and dynamic ride whether you're in the saddle of a new or used model.

A Blast from the Past: 1990s and 2000s

The Ninja ZX-6R debuted in 1995 to complement Kawasaki's larger ZX-9R, expanding the manufacturer's illustrious Ninja family tree. As a 600-class supersport bike, the Ninja ZX-6R immediately garnered acclaim for its lightweight design and penchant for speed. The early model weighed just over 450 lbs in running order and relied on a 599cc engine, promising a quarter-mile run in 11 seconds. Moreover, it became the supersport bike of choice because, unlike its rivals, Kawasaki kept it affordable and made it accessible to more riders.

Although the Ninja ZX-6R set new benchmarks in the segment, Kawasaki couldn't rest on its early success as rivals like Honda, Yamaha, and Suzuki threatened the Ninja ZX-6R's reign with models like the CBR600RR, YZF-R6, and GSX-R600. By the new millennium, the competition was so steep that Kawasaki made a huge update to the Ninja ZX-6R, swapping its 599cc engine with a 636cc powerplant. The increased displacement secured the Ninja ZX-6R's position as one of the most capable, affordable, and dynamic middleweight sport bikes ever made.

With frequent updates, Kawasaki ensured the Ninja ZX-6R stayed in the spotlight throughout the new millennium. The bike gained a more rigid chassis in 2003, reducing weight and improving its already impressive handling. Kawasaki also moved the exhaust under the seat and introduced more modern design details in 2005, rounding the Ninja ZX-6R's fairings and finishing its frame in flat black. However, even with the updates, the Ninja ZX-6R experienced a change that few saw coming in 2007.

Although the ZX-6R switched to a 636cc engine in 2002, racing limits on engine displacement meant Kawasaki continued producing the 599cc version as the ZX-6RR. In 2007, the brand rolled out an all-new 599cc engine and combined the two models. Despite its smaller displacement, the new engine's smaller and more compact design enhanced the bike's cornering, an integral component of supersport performance. Moreover, the bike's redesigned suspension, frame, brakes, body, and swingarm added to its handling, improving responsiveness and delivering the dynamic experience riders expected of the ZX-6R.

Modern Marvels: 2013 to Present

The Ninja ZX-6R kept a steady pace throughout the new millennium, turning heads again in 2013 when Kawasaki reintroduced the 636cc engine and a host of new features and upgrades to the chassis and suspension. Entirely revamped to deliver more horsepower and torque, the 2013 Ninja ZX-6R proved it could keep up the pace in a fiercely competitive segment. Moreover, Kawasaki again provided performance without skyrocketing the price, earning the ZX-6R high praise as one of the best value-oriented bikes in the segment.

Kawasaki accomplished the feat by updating the Ninja ZX-6R's frame and fairing. The Ninja ZX-6R also gained a new dash and a Showa Big Piston Fork. In addition, Kawasaki gave riders more control over the Ninja ZX-6R's performance with the three-mode Kawasaki Traction Control System and the available intelligent anti-lock braking system, which helps riders achieve optimal control even in slippery conditions.

A green 2022 Kawasaki Ninja ZX-6R is shown from the front of a racetrack.

Shopping for a Used Ninja ZX-6R

While the 2013 Ninja ZX-6R is an exceptional bike and a great find as a used model, we're biased toward 2019 or newer models. Why? After the complete overhaul in 2013, the Ninja ZX-6R remained relatively unchanged until 2019. For that year, Kawasaki added new bodywork, a better seat, and a host of updates. These improvements enhance the value of the bike and make it incredibly appealing as a used model on the showroom floor today.

A used 2019 Ninja ZX-6R is an incredible option for riders looking for one of the last remaining 600-class supersport bikes. But why is this model such a great place to start? Kawasaki made several updates to the Ninja ZX-6R to improve its performance, making the 2019 and newer models more engaging to ride. How so?

By updating the gear ratio, Kawasaki heightened the Ninja ZX-6R's power output at lower RPMs to ensure a confident ride. In addition, Kawasaki adds to this confidence by equipping the Ninja ZX-6R with rider-support and performance-oriented features like Kawasaki Traction Control, a Power Mode Selector, the Kawasaki Intelligent Anti-Lock Brake System, and a Kawasaki Quick Shifter. The Quick Shifter is one of the most notable upgrades because it eliminates the need to use the clutch to shift, transforming your experience in the saddle as you navigate your commute in the city or explore a winding backroad.

Along with these performance upgrades, the 2019 Ninja ZX-6R looks the part of a real road warrior. Its design mimics the Ninja's signature style, with bold lines, an aggressive stance, and high-visibility LED lighting. Kawasaki also updated the seat, shortening its length and narrowing it at the front to improve the riding position and give you more control over the bike when stopped. For added style, look for the KRT Edition with its Kawasaki racing livery.

These updates carry over to newer models and confirm that it's hard to improve an already outstanding package. Even with the 2023 model, you're still gaining an affordable powerhouse with the Kawasaki Traction Control System, available anti-lock brakes, and a class-leading Showa Big Piston Fork. All this for just under $11,000 feels like a steal in a new bike, and a used model will undeniably keep more money in your wallet without forcing you to compromise on performance or quality. It's just as Kawasaki intended when it debuted the Ninja ZX-6R nearly three decades ago.

Two green 2021 Kawasaki Ninja ZX-6R are shown racing on a track.

Shop Smart, Shop Kawasaki

Kawasaki has a stellar reputation in the motorcycle industry for making high-performance bikes affordable and accessible to more riders. While rival manufacturers ask a premium for their models, the Ninja ZX-6R defies convention with its budget-friendly starting price as a new model. Suddenly, bringing your supersport bike dreams to life is achievable, even more so when you venture into used bike territory. Here at SF Moto, we are happy to walk you through our inventory of used Kawasaki motorcycles, including the ZX6-R.

Shopping for a used bike like the Ninja ZX-6R is an excellent investment, whether you're a long-time fan of supersport bikes or want to expand your riding skills and explore everything a bike like the Ninja ZX-6R offers. Either way, the Ninja ZX-6R's aggressive riding position, potent engine, distinct design, and high-value packaging guarantee it checks all the boxes. It's an incredible combination that's hard to beat, especially with the limited 600-class options available today.