●Photo: Hiroyuki Ogawa / Kawasaki Motors; Taken at Tokyo German Village
With the Ninja series already well-established—featuring 250, 400, 650, and 1100 models—a new 500 has slipped in between the 400 and 650.It features a 500cc (451cc) engine mounted on a 250cc-based frame—it’s bound to be great. What does this reveal about the current state of the motorcycle industry??
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A big engine in a small frame
The bike with the most “crazy…” engine-to-chassis imbalance I’ve ever ridden was a custom bike that crammed a 450cc motocross single-cylinder engine into a TDR50 frame and even added a NOS system.It was incredibly extreme and possessed a speed that was almost—no, definitely—scary. And yet, I still felt an irresistible thrill from it, which just goes to show that motorcyclists are a strange bunch.
A high-powered engine in a minimalist frame—any rider would be intrigued by that combination. Even if that modified TDR 450 was an extreme example, aren’t we all drawn to engines with massive power that transcend the frame’s class?
With the Ninja, this happened when it transitioned from the 650-based 400 to the 250-based 400. A 400cc engine in a 250cc frame—it was the kind of bike many riders dream of, and I think it was a model especially loved by enthusiasts, veterans, and connoisseurs.And now, that same chassis is paired with a 500 (actually 451) cc engine. It’s as if the dream has been taken to a whole new level. That said, even with a 500 engine mounted on a 250 cc chassis, this new Ninja 500 was by no means “crazy.”

Ninja 500 (left) / Z500 (right) This is a new mid-class lineup that went on sale in Japan starting in 2026.
Ninja 500

Ninja 500 (2026): Features a 451cc parallel-twin engine mounted on a frame shared with the Ninja 250 and 400. Pricing starts at 891,000 yen.
Z500

Z500 (2026) A street naked bike featuring components similar to those on the Ninja. The front fairing is the same type used on the 650 and larger models. Pricing starts at 847,000 yen
North America’s Best-Seller

Although it doesn’t meet the requirements for either the European A2 license or the standard Japanese motorcycle license, it’s reportedly a huge hit within Kawasaki’s North American lineup.
It’s not one of the 500s or 550s that were once common in overseas markets, and with its 53 horsepower rating—which doesn’t even meet the European A2 license limit (approximately 47 horsepower)—what exactly is this new Ninja (& Z) 500?It’s not just a whimsical attempt to boost the power of the Ninja 250 for the sake of it, but given that models like the 250, 400, and 650 are already available—especially in Japan and Europe—one can’t help but imagine this is aimed at a niche market.
The main target market is reportedly North America. Moreover, given that this 500 was the best-selling model in Kawasaki’s lineup in the North American market last year, it means that even though it may seem like a somewhat niche offering in Japan, it’s a massive hit and a bestseller over there.
Incidentally, the North American lineup consists of the 300, this 500, the 650, and the 1100, so it’s true that the 500 feels like a more natural fit compared to the Japanese lineup, which is organized by displacement with models like the 250 and 400.In regions without an A2 license or a standard motorcycle license system limited to 400cc, it’s widely accepted as the perfect practical sports bike.
An Engine Displacement Increase with Nothing but Benefits
It rides incredibly well. As you’d expect, the overall feel is exactly that of a 250, and the ease with which you can get started makes it hard to believe this is a bike that requires a large-displacement motorcycle license.The riding position is quite upright, similar to the faired Ninja model. Although the handlebars are clip-ons, they offer plenty of room thanks to their height and drop angle. Surprisingly, the Z model with its bar-style handlebars has a shallower drop angle, making the handlebars feel farther away and resulting in a slightly more forward-leaning riding position.
The footpegs aren’t positioned in a particularly sporty “back-step” configuration; instead, their natural placement provides a relaxed riding posture and is designed so they don’t get in the way when you put your foot down. Upright forks, a single disc brake, and a simple instrument panel. Everything in my field of vision felt exactly like a 250, allowing me to start riding without any hesitation.
*Model is 170 cm tall and weighs 70 kg. Jacket worn: “Kawasaki × IXON M-Night WP A.” Click here for details.That said, it’s got a 500cc engine, right? …It’s surprising that it doesn’t feel like it. The throttle’s responsiveness at low RPMs, the clutch’s intuitive engagement, the bike’s overall lightness, and its practical, everyday feel—all of these make you forget its displacement; at low speeds, it really handles just like a 250.Still, the engine definitely has plenty of power to spare, offering abundant torque not only compared to a 250 but even compared to a 400. What’s more, the torque delivery is smooth—there’s absolutely no harsh throttle response or rough low-end vibrations. It’s always smooth and responsive, with everything working in your favor.
For example, when pulling away from a traffic light, the reliable torque lets you accelerate exactly as you want, and it’s a real lifesaver at low speeds—like during a U-turn—where it keeps chugging along steadily.As you rev it up, the sensation of power increasing steadily is similar to that of the 400, but it’s even more powerful and faster than the 400, fully delivering the thrill of “big power in a small body!”
It’s not as if it’s been given a different personality compared to the 400. This is simply a 451cc version of the Ninja 400, and the concept remains exactly the same. It’s precisely because it’s such an unpretentious bike that it has been widely embraced by a diverse range of riders in North America and has become a bestseller.
A certain rough-and-ready charm

Both the Ninja 500 and Z500 offer the power of a 451cc engine in a 250cc-class package. I ended up riding all over the place during the test ride.
On the day of the test ride, I also rode more premium, larger-displacement, and heavier models like the Z1100 and Z900RS, so the Ninja 500 felt very small, and depending on the situation, its frame even felt a bit flimsy.However, once I hit the winding roads, I realized that the lightweight frame—which I’d initially perceived as flimsy compared to larger-displacement bikes—wasn’t flimsy at all, but rather completely responsive to my every command. Because it’s so light and slim, it handles sharply and really gets your competitive spirit going. I even found myself imagining how many people in North America must have bought one of these to enjoy track days.
This lightness, combined with the supple chassis that grips the road, is incredibly appealing. I’d already thought the 400 was a perfect fit for Japanese public roads, but with the 500’s ample torque, it’s even more so—and I ended up riding around feeling quite cocky.
Compared to the Z1100 and Z900RS I rode at the same time, it did sometimes get jolted by road imperfections, and in those moments I found myself thinking it lacked the smooth, cushioned ride provided by the weight of larger-displacement bikes and high-end suspension. But even when it gets jolted, it’s really no big deal.Even if the bike shudders a bit, it settles down immediately, and thanks to the bike’s light weight and the ease with which you can grip it tightly with your knees, the rider remains completely at ease even when such abrupt reactions occur. There’s a strong sense that you can handle anything, and that’s precisely what heightens the feeling of “being in control of the bike.”
Ninja and Z
After riding both the faired and unfairing models—one with a fairing and the other with a bar-and-handlebars setup—alternately, I concluded that there’s almost no difference between the two. Aside from a very slight difference in the caster angle, the bike dimensions—including gear ratios and tire sizes—are exactly the same. The only real difference is that the Z is about 4 kg lighter because it lacks the fairing.
However, when riding them side by side, I did notice some subtle differences. Because the Ninja has a fairing, the front end feels more stable, making it easier to gauge front-end traction on winding roads.Also, because the handlebars have a moderate rake angle, it’s easy to hook your little finger over them and use a quick, sharp twist to initiate a turn, and it’s also easier to react to sudden disturbances.
In contrast, the Z has a handlebar shape that’s nearly flat, with both ends raised. It’s designed for a streetfighter-style riding position with elbows out, and this model might actually have a stronger sense of that “brashness” I mentioned earlier.While the Ninja allows the rider to feel at one with the bike and navigate corners smoothly, the Z requires the rider to firmly press down on the front end to “make it obey.” The lightness around the front end, resulting from the lack of fairings, likely reinforces this impression.While the Ninja felt more natural to me, the Z is more distinctive in terms of enjoying that streetfighter-style aggressiveness.
The best choice if you don’t care about vehicle inspections or driver’s licenses
Although there were slight differences between the two models, they both share the same core appeal: a “500cc engine in a 250cc-class frame.” They deliver the “lightweight, high-power” combination that every rider dreams of, and their basic, no-frills frames only enhance the joy of riding.
The Ninja 250 is appealing as a standard sport bike that doesn’t require a vehicle inspection. And the 400 is an attractive all-around sport bike that can be ridden with a standard motorcycle license. However, when you set those categories aside, it’s this 500 that proves most alluring.A Kawasaki representative once said, “The 500 offers a kind of joy that’s unique to the 500.” When I think about it, this 500 model feels like the perfect match for this chassis—I even get the sense that this was the ultimate goal for the series. Compared to the 650, its lightness and compactness are key strengths, and these represent clear points of differentiation.
In recent years, manufacturers have been offering attractive options that aren’t bound by license restrictions, and this time, Kawasaki has jumped on that trend. Perhaps manufacturers are now operating under the assumption that people who enjoy motorcycling as a hobby will naturally obtain a large-displacement motorcycle license.And if holding a large-displacement motorcycle license becomes the norm, I suspect they’re anticipating that more riders will choose “bikes they can truly enjoy” or “bikes that suit their lifestyle”—regardless of displacement—rather than opting for models based solely on engine size.
Although the Ninja Z500 is likely to remain a niche offering in the current Japanese market, it’s a great bike that can be recommended to anyone. I’d even like to own one myself.

These two lightweight, high-powered bikes embody the distinctive character of the middleweight class. They are excellent bikes that can be widely recommended to anyone.
Ninja 500/Z500 Detail Check
Ninja 500

Headlights similar to those on the ZX-6R highlight the Ninja family. The low beam uses a compact monofocus LED, while the high beam employs a black reflector design that darkens the unlit areas inside the headlight, creating a bold, aggressive look.

The configuration is very basic, featuring φ41 mm inverted forks, a φ310 mm single disc, and a pin-slide caliper. However, since it works so well, it makes you think that a bike should be this simple.Furthermore, the lightweight five-spoke wheels—developed with feedback from racing to enhance longitudinal stiffness—improve cornering performance. The brake feel minimizes initial dead travel as much as possible, and the use of lightweight, high-grip radial tires demonstrates that even within this basic setup, every detail has been meticulously refined.

Although it features clip-on handlebars, their high position and downward angle mean the rider’s little finger is positioned surprisingly close to the body. As a result, it offers a more relaxed riding position than the Z, and the Ninja provides a greater sense of unity with the bike. The instrument panel is a full LCD display that provides ample information. Additionally, it comes equipped with the dedicated app “RIDEOLOGY THE APP.”

While maintaining the 70.0 mm bore, the stroke has been increased from the 400’s 51.8 mm to 58.6 mm, bringing the displacement to 451 cc. Power has increased from 48馬力 to 53馬力.However, its character remains similar to the 400, making it very easy to handle even at low RPMs and in everyday speed ranges. Additionally, the RPM at which maximum torque is generated has been lowered from 8,000 RPM on the 400 to 7,100 RPM; in that sense, the 500 is even easier to handle in certain situations.The fairing is also designed with heat dissipation from the radiator in mind; even if the cooling fan runs while the bike is stopped—such as in traffic—it is engineered to keep heat as far away from the rider as possible.

Although it looks similar, the seat is actually flatter than that of the 400. While the 400’s seat didn’t feel particularly sloped forward, the 500 has been redesigned with an extremely flat shape—the front is slightly higher, while the rear is slightly lower.
Z500

The front fascia, featuring the bold design characteristic of the Z series, incorporates the triple LED headlights also found on the Z7 Hybrid. The configuration consists of two upper lights for low beams and one lower light for high beams, ensuring excellent lighting performance despite its compact size.

As a naked bike, the design actively showcases not only the engine but also the trellis frame and the curved exhaust pipes. The bodywork is positioned so that it appears to float above the engine. The gold-colored frame adds a unique touch.

The Z’s bar-type handlebars have a fairly flat profile, and the bar ends are actually farther from the rider than on the Ninja, which naturally results in a slight forward lean and a streetfighter-style riding position with the elbows spread out. Unlike the Ninja’s fairing-mounted mirrors, these are handlebar-mounted, but they’ve been designed to minimize vibration and ensure a clear rearview.I also thought that if the handlebars were replaced with ones that had a slightly greater taper and drop angle, the bike might take on a character similar to the Ninja’s.
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