2024 APRILIA RS660 vs KAWASAKI Ninja 400
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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.
- 2024 APRILIA RS660 82 cm Tallest seat here
- KAWASAKI Ninja 400 78.5 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 45 hp (KAWASAKI Ninja 400) up to 100 hp (2024 APRILIA RS660).
- Torque spans 37.2 Nm (KAWASAKI Ninja 400) up to 67 Nm (2024 APRILIA RS660).
- Weight spans 168 kg (KAWASAKI Ninja 400) to 183 kg (2024 APRILIA RS660).
- Displacement spans 400 cc (KAWASAKI Ninja 400) to 650 cc (2024 APRILIA RS660).
All values look the same; turn off the filter.
| Specification | APRILIA RS660 | KAWASAKI Ninja 400 |
|---|---|---|
| Brand | APRILIA | KAWASAKI |
| Model | APRILIA RS660 | KAWASAKI Ninja 400 |
| Engine size | 650cc | 400cc |
| Power | 100hp | 45hp |
| Torque | 67nm. | 37.2nm. |
| Cylinders / valves | Twin cylinder, 8 valves | Twin cylinder, 8 valves |
| Weight | 183kg | 168kg |
| Front brake | Brembo caliper-equipped, 4-piston dual 320mm disc, radially mounted master cylinder, steel brake hose | 310 mm petal discs. Single balanced actuation dual-piston caliper. |
| Rear brake | Brembo caliper-equipped, 2-piston 220mm disc, steel brake hose | 220 mm single petal disc. Dual-piston caliper. |
| Seat height (cm) | 82cm | 78.5cm |
| Front tyre | 120/70 x 17 Pirelli Diablo Rosso Corsa II | 110/70R17 |
| Rear tyre | 180/55 x 17 Pirelli Diablo Rosso Corsa II | 150/60R17 |
| Cooling | Liquid cooling | Liquid cooling |
| Front suspension | Kayaba 41mm inverted fork, fully adjustable, compression, rebound, and spring preload, with 120mm travel | 41mm telescopic fork |
| Rear suspension | Asymmetric aluminum rear swingarm, 130mm travel, adjustable preload and rebound | Bottom-Link Uni-Trak, gas-charged, preload adjustable |
| Motorcycle type | Supersport | Supersport |
| Top speed | 245km/h | 205km/h |
| Fuel capacity / consumption | 15 L – 6 L/100km | 14 L – 4 L/100km |
| Service network | ||
| Service quality | ||
| Parts availability | ||
| Price | $11549 | $5899 |
| Brand price lists | View APRILIA price list | View KAWASAKI price list |
| Extra features | -Aprilia Performance Ride Control System (APRC), electronic throttle control, ATCS (Aprilia Traction Control System) -AWC (Aprilia Wheelie Control), AEB (Aprilia Engine Brake Control), AEM (Aprilia Engine Map) -ACC (Aprilia Cruise Control System), 5 riding modes (track, road, mixed, and two personalized modes) |
-Slipper Clutch -Economic Riding Indicator |
Opinions
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2024 APRILIA RS660 vs 2023 KAWASAKI Ninja 400: listed specifications
The 2024 APRILIA RS660 and 2023 KAWASAKI Ninja 400 differ on the listed specifications: the RS660 has more displacement, peak power and torque, and the higher listed top speed, and the Ninja 400 has a lower listed weight.
Engine displacement
RS660 has a clearly larger listed engine displacement (650 cc vs 400 cc).
Peak power
RS660 has a clear listed power advantage (100 hp vs 45 hp).
Torque
RS660 has a clear listed torque advantage (67 Nm vs 37.2 Nm).
Listed top speed
RS660 has a clear listed top-speed advantage (245 km/h vs 205 km/h).
Cooling
Both motorcycles are listed as liquid-cooled.
Weight and seat height
Ninja 400 is notably lighter on the listed weight (168 kg vs 183 kg). There is a noticeable listed seat-height difference: RS660 is listed higher (82 cm) than Ninja 400 (78.5 cm).
Conclusion
The measurable differences are therefore concentrated in displacement, peak power, torque, listed top speed, weight and seat height.
Frequently asked questions
What is the top speed of APRILIA RS660 vs KAWASAKI Ninja 400?
APRILIA RS660 is listed at 245 km/h (152 mph) vs 205 km/h (127 mph) for KAWASAKI Ninja 400.
Which has more horsepower, APRILIA RS660 or KAWASAKI Ninja 400?
APRILIA RS660 has 100 hp compared with 45 hp on the KAWASAKI Ninja 400.
Which is lighter, APRILIA RS660 or KAWASAKI Ninja 400?
KAWASAKI Ninja 400 is lighter at 168 kg vs 183 kg for APRILIA RS660.
Which is better, APRILIA RS660 or KAWASAKI Ninja 400?
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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