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3 min read11.7K Views

Four-Cylinder Kawasaki Ninja ZX-25R Under Development

Reportedly, a working prototype of the bike is already ready at Kawasaki’s Indonesian factory

 

[Update: Kawasaki has launched the Ninja ZX-25 in Indonesia. Know prices and more details here.]

Reportedly, a working prototype of the bike is already ready at Kawasaki’s Indonesian factory

  • The prototype ZX-25R is said to sport a race exhaust and sound like a bigger bike. 
  • The inline four-cylinder motor could produce power figures of around 50PS.
  • Kawasaki sold a ZXR250 with an inline four-cylinder engine back in the ‘90s.
  • Expect the Ninja ZX-25R to go up against the Honda CBR250RR and the Yamaha YZF-R3.

Rumours suggest that Kawasaki is currently working on an all-new, 250cc motorcycle. The Japanese manufacturer has reportedly added two extra cylinders to the engine. In essence, the bike may feature a powerful four-cylinder motor instead of a parallel-twin powerplant. Allegedly, a working prototype version of this bike christened the Ninja ZX-25R is already ready at Kawasaki’s factory in Indonesia.

Reports also suggest that the prototype sports a race exhaust with the characteristic howl of a bigger displacement motor. While there’s no official word from the bikemaker, we could expect the bike to produce twice the amount of power compared to the current Kawasaki Ninja 250. To put things into perspective, the existing model uses a 249cc, liquid-cooled, parallel-twin motor that belts out 39PS at 12,500rpm and 23.5Nm of peak torque at 10,000rpm. Considering the Ninja ZX-25R has two extra cylinders at its disposal, power figures in the range of 45PS to 50PS seems plausible.

Also Read: Is The Next-Gen Small Ninja Going To Be Electric?

Besides, it isn’t the first time the Japanese manufacturer has slapped a four-cylinder engine into a 250cc class motorcycle. Heck, they did it back in the ’90s with the Kawasaki ZXR250. This pocket rocket was capable of revving up to a jaw-dropping 19,000rpm while its engine was restricted to produce 45PS due to Japanese safety norms. 

The new bike is expected to feature a bigger disc brake upfront clamped by a four-piston caliper and a single rear disc mated to a two-piston caliper. Dual-channel ABS is likely to be offered as standard. The suspension hardware could comprise of premium upside down forks and monoshock. The ZX-25R may also feature LED lights at both ends and a full-digital instrument console to keep in line with the current generation bikes. And considering Kawasaki loves pushing the limits of a bike, we might see some rider aids as well.

In terms of competition, the Ninja ZX-25R is expected to go up against the Honda CBR250RR and the Yamaha YZF-R3. While the duo produce power outputs hovering around the 40PS mark, the ZX-25R could outdo the two in terms of outright performance. With the prototype Ninja ZX-25R up and running, we expect the bike to be showcased at either the 2019 Tokyo Motor Show or at the 2019 EICMA motor show. Until then, stay tuned to BikeDekho for more information.

Source: GridOto.com

Kawasaki Ninja 300 User Reviews

M
m on Mar 09, 2026
4.7
A Budget Beast

Been using it for almost 5 years now and never had it left me on the road stranding. The bike is a superstar with almost 26-30 mileage, it is just an unbeatable combination of power and efficiency. Cornering is so much fun after I upgraded the three and barely I was ever unsatisfied with the looks and styling its got.Read More

D
diptanshu on Feb 19, 2026
4.0
Performance and reliability

I chose Ninja 300 for its performance, strong top-end power as I was about passionate about riding. Its good beginner- friendly and revs without being jerky. Has comfortable ergonomics and is a balanced bike with reliability. So far engine was smooth and linear. Sporty but not aggressive and power is usable for city and highways. Longer rider are somewhat comfortable and is stable. Display and techs are basic and is slightly heavy. Braking could be sharper to some extent. Yes, I would recommend Ninja 300 for smooth, reliable and well-balanced to ride easily and still have fun on rides. It tend to have better performance but lacks some basic features which other bikes in the same segment offer.Read More

P
prasad on Jan 30, 2026
5.0
Smooth engine, strong highway performance and spor

I choose this bike mainly because of its smooth engine and highway comfort. It feels very stable at high speed and gives confidence while riding. Looks are sporty and premium which I liked. In city suspension feels little stiff but I was ok with that compromise. Ride experience is mostly positive. On highways it feels planted and smooth even at higher speed. Handling is very good and cornering feels safe. Mileage is decent not too low not too high. In city traffic and bad roads you feel bumps little more. Yes I will recommend this bike to people who love riding on highways and enjoy sporty riding style. It is not for someone who want soft suspension or only daily city use. Buy it if you want performance and feel, avoid if mileage is main concern.Read More

P
prashant on Jan 01, 2026
5.0
Kawasaki Ninja 300 is the perfect balance of power style control

Kawasaki Ninja 300 mere liye sirf ek sport bike nahi balki speed control aur confidence ka perfect combination hai aur pehli ride se hi ye bike feel karwa deti hai ki Kawasaki ka name kyu itna interested hai iska 296CC parallel twin engine smooth aur refined hai aur traffic mein bike bilkul manageable r3ehti hai aur highway par jate hi iska real character bahar aa jata hai acceleration linear hai isliye beginner riders bhi bina dare iski power enjoy kar sakte hai Kawasaki Ninja 300 ka design bilkul race inspired hai sharp fairing aggressive stance aur premium paint finish isse road par sabse alag banate hai aur ye bike chalate waqt nahi balki iske sath khade hone par bhi attention attract karti hai Kawasaki Ninja is the best bike for my lifeRead More

L
laxman on Nov 13, 2025
5.0
Easy to Maintain Ride

Needed a bike for both work and weekend trips. This one offered decent comfort and better mileage. I chose this model after comparing with two others. It had better looks and better average. This super bike is perfect for rides Very satisfying ride. The seat is wide and soft. Long rides are comfortable. Performance is stable. I’m happy with how it rides. No vibration, good pickup, and handling is easy. Mileage has stayed steady. Best for riders who do both city and highway trips. Runs smooth and gives good fuel return. I’d suggest it to anyone who wants balance of mileage, comfort, and power. Worth the money. Yes, this bike is perfect for ridesRead More

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Gaurav Sadanand
A motorcycle fanatic and a designer by heart. I Love travelling and recently developed a passion for writing and what better could I choose to write about but bikes! They say careers are unplanned happenings and I couldn't agree more, hence I’m following my passion because the best feeling in the world is to get paid to do what you love.
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