2024 APRILIA RS660 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.
- 2024 APRILIA RS660 82 cm Tallest seat here
- KAWASAKI Ninja ZX-4RR 80 cm Lowest seat here
Spread in this comparison: about 2 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 100 hp (2024 APRILIA RS660).
- Torque spans 67 Nm (2024 APRILIA RS660) up to 76.4 Nm (KAWASAKI Ninja ZX-4RR).
- Weight spans 183 kg (2024 APRILIA RS660) to 188 kg (KAWASAKI Ninja ZX-4RR).
- Displacement spans 400 cc (KAWASAKI Ninja ZX-4RR) to 650 cc (2024 APRILIA RS660).
All values look the same; turn off the filter.
| Specification | APRILIA RS660 | KAWASAKI Ninja ZX-4RR |
|---|---|---|
| Brand | APRILIA | KAWASAKI |
| Model | APRILIA RS660 | KAWASAKI Ninja ZX-4RR |
| Engine size | 650cc | 400cc |
| Power | 100hp | 79.1hp |
| Torque | 67nm. | 76.4nm. |
| Cylinders / valves | Twin cylinder, 8 valves | 4 cylinders, 16 valves |
| Weight | 183kg | 188kg |
| Front brake | Brembo caliper-equipped, 4-piston dual 320mm disc, radially mounted master cylinder, steel brake hose | Twin 290 mm discs, ABS |
| Rear brake | Brembo caliper-equipped, 2-piston 220mm disc, steel brake hose | Single 220 mm disc, ABS |
| Seat height (cm) | 82cm | 80cm |
| Front tyre | 120/70 x 17 Pirelli Diablo Rosso Corsa II | 110/70-17 |
| Rear tyre | 180/55 x 17 Pirelli Diablo Rosso Corsa II | 150/60-17 |
| Cooling | Liquid cooling | Liquid cooling |
| Front suspension | Kayaba 41mm inverted fork, fully adjustable, compression, rebound, and spring preload, with 120mm travel | SFF-BP internal parts and adjustable spring preload/4.7 inches, 37 mm inverted fork |
| Rear suspension | Asymmetric aluminum rear swingarm, 130mm travel, adjustable preload and rebound | Horizontal Back-link, BFRC lite gas-charged shock with piggyback reservoir, adjustable compression, rebound, and spring preload/4.9 inches |
| Motorcycle type | Supersport | Supersport |
| Top speed | 245km/h | 235km/h |
| Fuel capacity / consumption | 15 L – 6 L/100km | 15 L – 6 L/100km |
| Service network | ||
| Service quality | ||
| Parts availability | ||
| Price | $11549 | $9399 |
| 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) |
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 |
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2024 APRILIA RS660 vs 2023 KAWASAKI Ninja ZX-4RR: listed specifications
The 2024 APRILIA RS660 and 2023 KAWASAKI Ninja ZX-4RR are closely matched in weight, while the RS660 has more displacement and peak power, and the higher listed top speed, and the Ninja ZX-4RR has more torque.
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 79.1 hp).
Torque
Ninja ZX-4RR has a modest listed torque advantage (76.4 Nm vs 67 Nm).
Listed top speed
RS660 has a modest listed top-speed advantage (245 km/h vs 235 km/h).
Cooling
Both motorcycles are listed as liquid-cooled.
Weight and seat height
RS660 and Ninja ZX-4RR have very similar listed weights (183 kg vs 188 kg). Ninja ZX-4RR has a lower listed seat height (80 cm vs 82 cm).
Conclusion
The measurable differences are therefore concentrated in displacement, peak power, torque, listed top speed and seat height, while weight remains relatively close.
Frequently asked questions
What is the top speed of APRILIA RS660 vs KAWASAKI Ninja ZX-4RR?
APRILIA RS660 is listed at 245 km/h (152 mph) vs 235 km/h (146 mph) for KAWASAKI Ninja ZX-4RR.
Which has more horsepower, APRILIA RS660 or KAWASAKI Ninja ZX-4RR?
APRILIA RS660 has 100 hp compared with 79 hp on the KAWASAKI Ninja ZX-4RR.
Which is lighter, APRILIA RS660 or KAWASAKI Ninja ZX-4RR?
APRILIA RS660 is lighter at 183 kg vs 188 kg for KAWASAKI Ninja ZX-4RR.
Which is better, APRILIA RS660 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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