KAWASAKI Ninja ZX-4RR vs KAWASAKI Z400
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Scores, summary & seat (optional) Estimates and auto text from specs — open if you want them.
Technical score (estimate)
Weighted mix of power, torque, power-to-weight, top speed and lighter weight within this comparison only. Not a real-world verdict — riding style and roads matter.
Usage fit (estimate)
Rough scores for city riding, touring, sporty riding and new riders — mix of specs and bike category. Same caveats as the technical score: traffic, skill and tyres matter.
City / commute
Touring / long rides
Sporty riding
New rider friendly
Seat height (cm)
Figures are as in the database; boots, suspension sag and road surface change how tall the bike feels.
- KAWASAKI Ninja ZX-4RR 80 cm Tallest seat here
- KAWASAKI Z400 78.5 cm Lowest seat here
Spread in this comparison: about 1.5 cm.
Rough guide: comfortable flat-foot reach often needs inseam roughly in the same ballpark as seat height (varies a lot by ergonomics).
Auto summary from specs
Generated from the numbers in the comparison — not a review.
- Power spans 45 hp (KAWASAKI Z400) up to 79.1 hp (KAWASAKI Ninja ZX-4RR).
- Torque spans 37.2 Nm (KAWASAKI Z400) up to 76.4 Nm (KAWASAKI Ninja ZX-4RR).
- Weight spans 167 kg (KAWASAKI Z400) to 188 kg (KAWASAKI Ninja ZX-4RR).
- Engine sizes are very close.
Reader votes so far — total 1: KAWASAKI Ninja ZX-4RR (1); KAWASAKI Z400 (0).
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| Specification | KAWASAKI Ninja ZX-4RR | KAWASAKI Z400 |
|---|---|---|
| Brand | KAWASAKI | KAWASAKI |
| Model | KAWASAKI Ninja ZX-4RR | KAWASAKI Z400 |
| Engine size | 400cc | 400cc |
| Power | 79.1hp | 45hp |
| Torque | 76.4nm. | 37.2nm. |
| Cylinders / valves | 4 cylinders, 16 valves | Twin cylinder, 8 valves |
| Weight | 188kg | 167kg |
| Front brake | Twin 290 mm discs, ABS | 310 mm petal discs. Single balanced actuation, dual-piston caliper |
| Rear brake | Single 220 mm disc, ABS | 220 mm single petal disc. Dual-piston caliper |
| Seat height (cm) | 80cm | 78.5cm |
| Front tyre | 110/70-17 | 110/70R17 M/C 54H |
| Rear tyre | 150/60-17 | 150/60R17 M/C 66H |
| Cooling | Liquid cooling | Liquid cooling |
| Front suspension | SFF-BP internal parts and adjustable spring preload/4.7 inches, 37 mm inverted fork | 41mm telescopic fork |
| Rear suspension | Horizontal Back-link, BFRC lite gas-charged shock with piggyback reservoir, adjustable compression, rebound, and spring preload/4.9 inches | Bottom-Link Uni-Trak, gas-charged, preload adjustable |
| Motorcycle type | Supersport | Naked |
| Top speed | 235km/h | 185km/h |
| Fuel capacity / consumption | 15 L – 6 L/100km | 14 L – 3.5 L/100km |
| Service network | ||
| Service quality | ||
| Parts availability | ||
| Price | $9399 | $5399 |
| Brand price lists | View KAWASAKI price list | View KAWASAKI price list |
| Extra features | Electronic Riding Aids Economical Riding Indicator, Kawasaki Traction Control (KTRC) (3 modes), Kawasaki Quick Shifter (KQS) (dual-direction), Power Modes Special Features 4.3" Full-color TFT Display, Smartphone Connectivity via RIDEOLOGY THE APP -Power Modes -Smartphone Connectivity -Horizontal Back-link Rear Suspension |
-New Slipper Clutch -Economical Riding Indicator |
Opinions
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2023 KAWASAKI Ninja ZX-4RR vs 2023 KAWASAKI Z400: listed specifications
The 2023 KAWASAKI Ninja ZX-4RR and 2023 KAWASAKI Z400 are closely matched in displacement, while the Ninja ZX-4RR has more peak power and torque, and the higher listed top speed, and the Z400 has a lower listed weight.
Engine displacement
Ninja ZX-4RR and Z400 have very similar engine displacement (400 cc vs 400 cc).
Peak power
Ninja ZX-4RR has a clear listed power advantage (79.1 hp vs 45 hp).
Torque
Ninja ZX-4RR has a clear listed torque advantage (76.4 Nm vs 37.2 Nm).
Listed top speed
Ninja ZX-4RR has a clear listed top-speed advantage (235 km/h vs 185 km/h).
Cooling
Both motorcycles are listed as liquid-cooled.
Weight and seat height
Z400 is notably lighter on the listed weight (167 kg vs 188 kg). Z400 has a lower listed seat height (78.5 cm vs 80 cm).
Conclusion
The measurable differences are therefore concentrated in peak power, torque, listed top speed, weight and seat height, while displacement remains relatively close.
Frequently asked questions
What is the top speed of KAWASAKI Ninja ZX-4RR vs KAWASAKI Z400?
KAWASAKI Ninja ZX-4RR is listed at 235 km/h (146 mph) vs 185 km/h (115 mph) for KAWASAKI Z400.
Which has more horsepower, KAWASAKI Ninja ZX-4RR or KAWASAKI Z400?
KAWASAKI Ninja ZX-4RR has 79 hp compared with 45 hp on the KAWASAKI Z400.
Which is lighter, KAWASAKI Ninja ZX-4RR or KAWASAKI Z400?
KAWASAKI Z400 is lighter at 167 kg vs 188 kg for KAWASAKI Ninja ZX-4RR.
Which is better, KAWASAKI Ninja ZX-4RR or KAWASAKI Z400?
It depends on your riding style. Compare top speed, weight, fuel use and price in the table on this page, then vote for the bike you prefer.
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