Kawasaki Zx-25r
The Kawasaki Zx-25r has a top speed of ~185 km/h (estimated; some sources report up to 190 km/h), produces 45 hp and weighs 183 kg. Motoryk rates it 8.5/10.
The Kawasaki ZX-25R was introduced in 2020 for the Japanese domestic market, later expanding to Southeast Asian and other global markets. It is notable for being the world's first 250cc inline four-cylinder motorcycle in decades, reviving a class that had been dormant since the 1990s with models like the Honda CBR250RR-R. Its high-revving engine capable of exceeding 17,000 rpm generated enormous excitement among enthusiasts seeking a sports bike experience within the 250cc displacement class.
45 hp
Power
21.7 Nm
Torque
183 kg
Weight
~185 km/h (estimated; some sources report up to 190 km/h)
Top Speed
~5.5 L/100km (approximately 18 km/L, real-world estimate)
Fuel
Faired
Body
Video Review
What Buyers Should Know
High-Rev Maintenance Costs
The 4-cylinder engine redlines at 17,000 RPM, requiring valve clearance checks every 15,000 km — more frequent and costly than typical inline-4 sportbikes.
Strong Resale Value
The ZX-25R holds its value exceptionally well due to limited production numbers and its unique status as the only 250cc inline-4 in modern production.
Watch the Cooling System
Owners report the bike runs hot in slow traffic due to the high-revving engine in a compact chassis — check service history for overheating incidents before buying used.
Generations & Specs by Year
Inline four-cylinder 250cc engine, 45hp, aggressive supersport styling, slipper clutch, launch control, power modes.
Used Buyer Review
"The most addictive 250 ever built, buy it without hesitation."
$6,500-$9,500 usedLook, the ZX-25R is genuinely special and you know it the moment you hit 14,000rpm and that four-cylinder screams past your ears. Nothing else on two wheels does this under $10k. Kawasaki pulled off something remarkable cramming 250cc into four cylinders, and the soundtrack alone justifies the purchase price. It revs to 17,000rpm and makes around 45hp — numbers that sound modest until you're wringing its neck through a canyon. But go in eyes open. These bikes have been thrashed. Most used examples have seen track days or been ridden by owners chasing every single rev ceiling every single ride. Check the service history obsessively — valve clearances on a four-cylinder 250 aren't cheap. Parts availability varies by region, and dealers aren't always familiar with the platform. Chain and sprockets wear faster than you'd expect given how hard owners ride them.
Top 10 Accessories
Curated picks for the Kawasaki Zx-25r — owned, ridden, recommended.
Common Problems
🔥 1 CRITICALFan operation, coolant level, radiator condition
Compression test, oil condition, service history
Idle smoothness, hesitation between cylinders
Inspect headers for rust, leaks, heat damage
✅Pre-Purchase Checklist
Solid if maintained, avoid neglected high-km examples
Full Specifications
Rivals & Alternatives
Bikes that buyers cross-shop with the Kawasaki Zx-25r
Honda Cbr250rr
Kawasaki Ninja Zx-6r
Kawasaki Ninja Zx-6r 636
Honda Cbr400rr
Kawasaki Ninja Zx-4r
Compare Kawasaki Zx-25r Side-by-Side
compare_arrowsSpecs, power, weight & buyer verdict — head-to-head with the bikes most often cross-shopped.
Kawasaki Zx-25r vs Honda Cbr250rr
Specs · Power · Buyer verdict
Kawasaki Zx-25r vs Kawasaki Ninja Zx-6r
Specs · Power · Buyer verdict
Kawasaki Zx-25r vs Kawasaki Ninja Zx-6r 636
Specs · Power · Buyer verdict
Kawasaki Zx-25r vs Honda Cbr400rr
Specs · Power · Buyer verdict
Kawasaki Zx-25r vs Kawasaki Ninja Zx-4r
Specs · Power · Buyer verdict
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Discussion
Frequently Asked Questions
What are common problems with the Kawasaki Zx-25r? +
Overheating at low speed/traffic: Fan operation, coolant level, radiator condition (moderate) | High-rev engine wear from redline abuse: Compression test, oil condition, service history (serious) | Throttle body sync issues, rough idle: Idle smoothness, hesitation between cylinders (moderate)
Is the Kawasaki Zx-25r a good motorcycle? +
The most addictive 250 ever built, buy it without hesitation. Rating: 8.5/10. Best for: Experienced riders wanting track-capable weekend fun. Avoid if: You commute daily and hate revving hard.
What is the horsepower of the Kawasaki Zx-25r? +
The Kawasaki Zx-25r produces 45 hp @ 15,500 rpm, with 21.7 Nm @ 13,000 rpm of torque. Top speed: ~185 km/h (estimated; some sources report up to 190 km/h).
Is the Kawasaki Zx-25r good for beginners? +
Yes — the Kawasaki Zx-25r is a reasonable choice for new riders (45 hp is manageable), weighing 183 kg. Experienced riders wanting track-capable weekend fun
Is the Kawasaki Zx-25r reliable? +
Owners report 1 critical issue to watch for on the Kawasaki Zx-25r, notably: High-rev engine wear from redline abuse (Compression test, oil condition, service history). Buy with a pre-purchase inspection.
Is the Kawasaki Zx-25r good for daily use? +
Experienced riders wanting track-capable weekend fun Fuel: ~5.5 L/100km (approximately 18 km/L, real-world estimate).
How fast is the Kawasaki Zx-25r? +
The Kawasaki Zx-25r reaches a top speed of ~185 km/h (estimated; some sources report up to 190 km/h), producing 45 hp at 183 kg curb weight. Real-world performance depends on rider weight, gearing, and road conditions.
What gear should I buy for a Kawasaki Zx-25r? +
Motoryk has curated a Top 10 gear list specifically for the Kawasaki Zx-25r, covering engine oil, tires, chain, battery, and brake pads — see motoryk.com/bikes/kawasaki/zx-25r/top10. Each pick is matched to this bike's spec.
