KAWASAKI Z900RS vs KAWASAKI Ninja ZX-4RR
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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 Z900RS 83.5 cm Tallest seat here
- KAWASAKI Ninja ZX-4RR 80 cm Lowest seat here
Spread in this comparison: about 3.5 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 79.1 hp (KAWASAKI Ninja ZX-4RR) up to 111 hp (KAWASAKI Z900RS).
- Torque spans 76.4 Nm (KAWASAKI Ninja ZX-4RR) up to 98.5 Nm (KAWASAKI Z900RS).
- Weight spans 188 kg (KAWASAKI Ninja ZX-4RR) to 215 kg (KAWASAKI Z900RS).
- Displacement spans 400 cc (KAWASAKI Ninja ZX-4RR) to 900 cc (KAWASAKI Z900RS).
Reader votes so far — total 1: KAWASAKI Z900RS (0); KAWASAKI Ninja ZX-4RR (1).
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| Specification | KAWASAKI Z900RS | KAWASAKI Ninja ZX-4RR |
|---|---|---|
| Brand | KAWASAKI | KAWASAKI |
| Model | KAWASAKI Z900RS | KAWASAKI Ninja ZX-4RR |
| Engine size | 900cc | 400cc |
| Power | 111hp | 79.1hp |
| Torque | 98.5nm. | 76.4nm. |
| Cylinders / valves | 4 cylinders, 16 valves | 4 cylinders, 16 valves |
| Weight | 215kg | 188kg |
| Front brake | 300 mm dual discs, radially mounted, monoblock 4-piston caliper | Twin 290 mm discs, ABS |
| Rear brake | 250 mm single disc, single-piston caliper | Single 220 mm disc, ABS |
| Seat height (cm) | 83.5cm | 80cm |
| Front tyre | 120/70ZR17 | 110/70-17 |
| Rear tyre | 180/55R17 | 150/60-17 |
| Cooling | Liquid cooling | Liquid cooling |
| Front suspension | 41 mm inverted fork, continuously adjustable compression and rebound damping, spring preload adjustable | SFF-BP internal parts and adjustable spring preload/4.7 inches, 37 mm inverted fork |
| Rear suspension | Horizontal back-link, continuously adjustable rebound damping, spring preload, and preload adjustability | Horizontal Back-link, BFRC lite gas-charged shock with piggyback reservoir, adjustable compression, rebound, and spring preload/4.9 inches |
| Motorcycle type | Naked | Supersport |
| Top speed | 235km/h | 235km/h |
| Fuel capacity / consumption | 17 L – 7 L/100km | 15 L – 6 L/100km |
| Service network | ||
| Service quality | ||
| Parts availability | ||
| Price | $12149 | $9399 |
| Brand price lists | View KAWASAKI price list | View KAWASAKI price list |
| Extra features | -Slipper Clutch -KTRC (2 MODES) -Economical Riding Indicator -Dual Throttle Valves |
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 |
Opinions
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2023 KAWASAKI Z900RS vs 2023 KAWASAKI Ninja ZX-4RR: Which One is Better for You?
2023 KAWASAKI Z900RS and 2023 KAWASAKI Ninja ZX-4RR offer comparable performance in terms of engine capacity, but usage preferences and driving styles could influence the choice. Additionally, 2023 KAWASAKI Z900RS, with its 111hp, stands out for users seeking speed and performance.
1. Cylinder Capacity and Performance
2023 KAWASAKI Z900RS and 2023 KAWASAKI Ninja ZX-4RR are close in engine capacity. 2023 KAWASAKI Z900RS, with its 900cc, provides slightly better performance, while 2023 KAWASAKI Ninja ZX-4RR, with its 400cc, offers a more economical and balanced option.2023 KAWASAKI Z900RS, with its 900cc engine capacity, is ideal for users seeking high performance and acceleration. Designed for performance-focused users and professionals.
2. Torque Power
2023 KAWASAKI Z900RS, with its 98.5Nm torque, delivers powerful performance. A high torque value ensures superior acceleration and advantage on steep inclines. 2023 KAWASAKI Ninja ZX-4RR, with its 76.4Nm torque, offers a more balanced ride for city use. 2023 KAWASAKI Z900RS is ideal for users requiring rapid acceleration. Moderate torque power is suitable for both city use and short-distance trips.
3. Top Speed
2023 KAWASAKI Z900RS (Naked) and 2023 KAWASAKI Ninja ZX-4RR (Süpersport) deliver the same performance with a maximum speed of 235 km/h. In this case, it would be more logical to base your decision on the type of motorcycle and other features rather than speed.
4. Cooling System
2023 KAWASAKI Z900RS features a Liquid-Cooled system, while 2023 KAWASAKI Ninja ZX-4RR offers a Liquid-Cooled system. Both models deliver equal performance in their cooling systems.
5. Design and Comfort
2023 KAWASAKI Z900RS and 2023 KAWASAKI Ninja ZX-4RR are close in weight, offering similar experiences for different usage scenarios. Additionally, 2023 KAWASAKI Z900RS, with a seat height of 83.5cm, is more suitable for taller riders, offering greater comfort.2023 KAWASAKI Ninja ZX-4RR, with a seat height of 80cm, provides a more ergonomic ride for average-height riders.
Conclusion
2023 KAWASAKI Ninja ZX-4RR emerges as the winner of this comparison based on total points. 2023 KAWASAKI Z900RS and 2023 KAWASAKI Ninja ZX-4RR offer comparable performance in terms of engine capacity. 2023 KAWASAKI Z900RS, with higher torque, excels in rapid acceleration and steep climbs. 2023 KAWASAKI Z900RS and 2023 KAWASAKI Ninja ZX-4RR deliver identical top speed performance. Both models have similar cooling systems, offering comparable performance for long journeys. In conclusion, 2023 KAWASAKI Ninja ZX-4RR stands out in terms of technical specifications and overall performance. However, depending on your riding preferences and usage needs, both models offer unique advantages.
Frequently asked questions
What is the top speed of KAWASAKI Z900RS vs KAWASAKI Ninja ZX-4RR?
Both are listed at 235 km/h top speed in our specification data.
Which has more horsepower, KAWASAKI Z900RS or KAWASAKI Ninja ZX-4RR?
KAWASAKI Z900RS has 111 hp compared with 79 hp on the KAWASAKI Ninja ZX-4RR.
Which is better, KAWASAKI Z900RS or KAWASAKI Ninja ZX-4RR?
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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