2025 Kawasaki Z900 SE Review – First Ride

A mid-model refresh adds tech to the table

If you’re interested in the middleweight naked bike class, now is a good time to be a motorcyclist. There is a sea of options and all of them bring something to the table. But when you’re faced with so many choices, how do you choose? It’s easy to get lost in the amount of options out there. Case in point? The 2025 Kawasaki Z900. Quietly going about its business, the ol’ Zed has been a stalwart in Kawasaki’s lineup for a few years now.

When the headlines were taken up by Dukes, Streetfighters, Street Triples, and another Japanese rival, the MT-09, the poor Kawi got left behind in my mind. Defined by its brash (for Japanese standards) Sugomi styling, the Z900 isn’t new to the class, but 2025 brings with it a mid-model year refresh highlighted by three letters nearly every motorcycle worth its salt can identify with these days – IMU. The Kawi may have slipped your mind in this sea of options, but Team Green certainly hasn’t forgotten about it.

2025 Kawasaki Z900SE

More on the IMU in a minute. But before we talk about what’s new on the inside, let’s take a moment to highlight what’s changed overall, based on what Kawasaki’s own owner surveys of previous Z900s and Z1000s classify as priorities before making a purchase. 

Engine

Unsurprisingly, 63% of respondents are most interested in the engine. Kawasaki wants you to think the engine is new, but this isn’t really the case. In reality, there’s a new camshaft profile that effectively moves the powerband a little lower in the rev range (conspiracy theorists might also suspect this move was made as another step to please the emissions gods). Kawi also claims the cam, along with the revised ECU settings and ignition timing, helps to improve fuel economy. Seeing as how the usable power is now shifted lower, this means you won’t need to rev the bike as high. Lower revs means less fuel burned. So, I suppose this checks. Complementing the new engine character are different internal gear ratios (final drive gearing remains the same).

Otherwise, the engine is mostly the same 948cc liquid-cooled Inline-Four we’ve known for some time. Bore and stroke are 73.4 x 56.0mm. Despite Kawi moving the powerband lower, this oversquare layout provides plenty of overrev for a gradual dropoff once past the point of peak power.

Downdraft throttle bodies provide the shortest path for air to reach the combustion chambers. Now, however, the throttle bodies are electronic, which make it possible to have cruise control. Clicking through the gears is also even easier thanks to the KQS (Kawasaki Quick Shifter) now operating in both directions.

Remember above how 63% of respondents were most interested in the engine? Sure, engine power is a big reason, but engine sound and character is another. To that end, it’s worth reminding readers that, while not new, Kawasaki tuned the airbox shape based on acoustic tests to deliver an intake (not exhaust, mind you) note the rider will enjoy throughout the rev range. Kawasaki’s positioning of the air intake facing upwards – towards the rider – is also no coincidence.

Styling

After the engine, 52% of survey respondents say they value a bike’s styling. Of course you would – nobody wants to ride an ugly bike. Continuing Kawasaki’s Sugomi design language for the big Zs, the Z900’s aesthetic can be defined as more refined than all new. When looking at the bike head on, the new triple LED headlight gives Predator vibes with its menacing face. Looking at the side profile, the headlight is the finishing visual touch if you were to follow the high arch, starting from the seat, and finish the line at the headlight. Brushed aluminum shrouds with the Z logo add a little bit of elegance and sophistication.

From here, the new fuel tank cover design is now separate from the shrouds and reveals the frame underneath for a more honest naked-bike feel. Another nod to a more grown-up appearance is the new textured seat and shorter tail section that makes the tail light appear more prominent.

Suspension

We’re of split opinions when it comes to the suspension for Z owners. Only 14% care – with the caveat being only 14% of standard model owners took the standard KYB suspension into consideration. This number understandably jumps to 44% when we’re talking about the SE model and its upgraded Öhlins S46 shock and fully adjustable KYB fork with gold tubes to match its Swedish counterpart in the rear.

Since we’re on the topic of SE upgrades, it’s also worth noting the SE wears Brembo M4.32 radial calipers compared to the new Nissin 4-pot radial calipers on the standard model. Brake discs still measure 300mm in the front for both models, 250mm in the rear. You get steel braided brake lines on the SE, rubber on the standard. And contact with the road is via Dunlop’s new Sportmax Q5A tires measuring 120/70-17 front and 180/55-17 in the rear. Interestingly, if you’re a tire nerd like me, following Dunlop’s closure of its US office in New York, these tires are made in Thailand.

You can’t talk about suspension without talking about the rest of the chassis, and while the new one is similar to the old, there are two minor but notable differences. The first is a new gusset behind the head tube to change the rigidity of the frame. The second is a tweak to the subframe, where the seat section of the frame is flatter before sweeping upwards and finishing at the rear. This was done to maintain the same seat height as before while using a thicker, more cushioned seat for added comfort.

Technology and features

Lastly, and a little surprisingly, 37% of owners surveyed said the bike’s technology was an important factor for them. The Z900 is certainly not meant to be a technological marvel, as it skates by with the most basic of the tech you expect in modern bikes – ride modes, ABS, traction control, and smartphone connectivity. But when you take into consideration the original Z900 was promoted as an affordable bike sans any rider aids and appealed to buyers that wanted the most bang for their buck with the least restriction, then this new version is a fairly significant departure.

However, the 2025 edition adds something to the table: an IMU. By now we all know what an IMU does, but the added vehicle dynamics data provided to the ECU lets the traction control work more accurately based not just on wheel speed variations, but lean angle too. It also enables lean-sensitive ABS, so you can trailbrake and add lean angle with less fear of losing the front end and holding your line. The IMU-assisted ABS will maintain optimum brake pressure while leaned over. This is especially important on the street, say, when trailbraking over a patch of dirt or gravel you didn’t see before.

IMU-enhanced ABS isn’t just for braking while leaned over, it also helps manage the pitch of the motorcycle while braking straight up and down, so you can have both wheels on the ground as much as possible. As we know, heavy braking pitches most of the bike’s weight towards the front, and in extreme cases this means the back tire will come off the ground. Now this tendency for the rear to lift is reduced.

Beyond the IMU, Kawasaki has also revamped the capabilities of the Rideology app with a new voice command feature to control the app hands-free. Assuming you already have a communicator in your helmet, now you can ask the app for weather conditions, navigation, time to destination, and a host of other options – all by talking.

All that information, including the turn-by-turn navigation, is shown to you through the new, larger 5-inch TFT display. You can choose between two new display types; one with a bar-style tachometer, the other with a hexagonal tach and an aviation-style altitude meter in the middle. But instead of showing altitude, it shows attitude, aka lean angle. The background color automatically changes between white or black, or you can manually keep it on one or the other. Speaking from experience, the black background looks cooler, but is impossible to see in broad daylight. Generally speaking, the menus are easier to navigate now, but a small criticism could be the need to push and hold buttons for what feels like an exceedingly long amount of time to reach certain menus.

Riding impressions

Knowing what’s changed with the bike is all well and good, but the question always comes back to: How does it ride? To find out, Kawasaki invited us out to Miami, Florida, where I’d get to ride the Z900SE with its upgraded suspension and brakes. We’d spend half our day on the street and the other half at Homestead Raceway to, hopefully, get a full picture of what the Zed could do.

Now, you might be thinking to yourself, “but wait, aren’t Florida roads mostly flat and straight? Also, isn't it the home of the notorious Florida Man?” Both answers are yes. We’ll save the Z’s cornering abilities for the track. The street ride was all about assessing the bike’s comfort and around-town engine performance. Luckily for me, I had just gotten off a previous-generation Yamaha MT-09 (with the smaller 847cc Triple) days prior, so memories of that ride were fresh in my head.

Sitting on the Z, the feet on my 5-foot, 8-inch frame don’t have to strain at all to reach the ground. The 31.9-inch seat height might seem tall to some, and despite my 30-inch inseam, the seat/tank junction is very modest and reasonable, allowing me to touch down easily.

Cruising through the streets of Miami, the seating position reflects something I’ve noticed on some of Kawasaki’s other naked bikes. The bars are nice and comfortable, sitting relatively high in a neutral position, but the pegs are slightly more forward than what I’d consider a natural riding position. It certainly isn’t a ding on Kawasaki, but more an observation. The real annoyance comes on the pipe side of the bike, where the exhaust shield interferes with your right heel if you have the ball of your feet on the pegs. It pushes the heel slightly outward and I found myself constantly moving my foot around to find a comfortable place to put it.

Otherwise, the seat itself isn’t a bad place to be. The extra seat foam is a welcome addition, and even as we got snarled in some Miami traffic, I didn’t feel any untoward engine heat coming my way. With the ride mode set to Street (between Sport on the top end and Rain on the bottom), throttle response was smooth, but it seemed to me from my butt dyno like the engine didn’t produce as much punch off the bottom as the MT-09 referenced earlier. This despite the Kawi having the bigger engine.

It’s not that the Z900 is slow, however. It moves along just fine and with more than enough torque and acceleration to ditch the traffic around us. Clicking up through the gears with the clutchless quickshifter was smooth as could be, too. And really, without a corner in sight, there wasn’t much else to glean from our street ride.

To the track!

Since Miami roads aren’t conducive to eating away chicken strips, our ride route took us right to Homestead Miami Speedway where we’d get a chance to rip around the 2.2-mile, 13-turn road course. The bikes stayed completely stock except for letting some air out of the Dunlop Q5A tires for track duty.

Now, I’ve been a fan of the Q5 tires previously, but the Q5A feels more road-oriented compared to its track-leaning namesake. The Q5 family has built a name for being able to get up to temperature quickly, and while that hasn’t been lost with the A version, edge grip isn’t the same as the standard Q5. That much was clear after only a few laps, and was only reinforced by the many times I’d see the TC light flashing on the dash to save me from myself. Even with traction control set to its lowest level.

Granted, the track isn’t where the Z900 was intended to live, it still performed admirably in some ways, and lacked in others. For instance, the Z continues a trend I’ve noticed on other Kawasaki Z models – a cramped seating position. The flat seat I praised earlier for being easy to touch the ground doesn't give the rider much room to move backwards or forwards. This doesn’t matter much on the street, but when you’re trying to tuck in at the track and there’s nowhere to go, that’s annoying.