2024 APRILIA RS457 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.
- 2024 APRILIA RS457 81 cm Tallest seat here
- KAWASAKI Z400 78.5 cm Lowest seat here
Spread in this comparison: about 2.5 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 47 hp (2024 APRILIA RS457).
- Torque figures are very close.
- Weight spans 167 kg (KAWASAKI Z400) to 175 kg (2024 APRILIA RS457).
- Displacement spans 400 cc (KAWASAKI Z400) to 450 cc (2024 APRILIA RS457).
Reader votes so far — total 1: 2024 APRILIA RS457 (1); KAWASAKI Z400 (0).
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| Specification | APRILIA RS457 | KAWASAKI Z400 |
|---|---|---|
| Brand | APRILIA | KAWASAKI |
| Model | APRILIA RS457 | KAWASAKI Z400 |
| Engine size | 450cc | 400cc |
| Power | 47hp | 45hp |
| Torque | 37.2nm. | 37.2nm. |
| Cylinders / valves | Twin cylinder, 8 valves | Twin cylinder, 8 valves |
| Weight | 175kg | 167kg |
| Front brake | 320 mm disc brake with four-piston caliper Dual Channel ABS | 310 mm petal discs. Single balanced actuation, dual-piston caliper |
| Rear brake | 220 mm single disc, single-piston caliper ABS | 220 mm single petal disc. Dual-piston caliper |
| Seat height (cm) | 81cm | 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 | 41mm upside-down fork, adjustable preload, 120mm travel | 41mm telescopic fork |
| Rear suspension | Monoshock, adjustable preload, 130 mm wheel travel | Bottom-Link Uni-Trak, gas-charged, preload adjustable |
| Motorcycle type | Supersport | Naked |
| Top speed | 220km/h | 185km/h |
| Fuel capacity / consumption | 15 L – 5 L/100km | 14 L – 3.5 L/100km |
| Service network | ||
| Service quality | ||
| Parts availability | ||
| Price | $6899 | $5399 |
| Brand price lists | View APRILIA price list | View KAWASAKI price list |
| Extra features | -Ride by Wire, 5-inch Colour TFT Display |
-New Slipper Clutch -Economical Riding Indicator |
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2024 APRILIA RS457 vs 2023 KAWASAKI Z400: listed specifications
The 2024 APRILIA RS457 and 2023 KAWASAKI Z400 are closely matched in peak power and torque, while the RS457 has more displacement, and the higher listed top speed, and the Z400 has a lower listed weight.
Engine displacement
RS457 has a larger listed engine displacement (450 cc vs 400 cc).
Peak power
RS457 and Z400 have very similar peak power (47 hp vs 45 hp).
Torque
RS457 and Z400 have very similar listed torque (37.2 Nm vs 37.2 Nm).
Listed top speed
RS457 has a clear listed top-speed advantage (220 km/h vs 185 km/h).
Cooling
Both motorcycles are listed as liquid-cooled.
Weight and seat height
Z400 has a modest listed weight advantage (167 kg vs 175 kg). Z400 has a lower listed seat height (78.5 cm vs 81 cm).
Conclusion
The measurable differences are therefore concentrated in displacement, listed top speed, weight and seat height, while peak power and torque remain relatively close.
Frequently asked questions
What is the top speed of APRILIA RS457 vs KAWASAKI Z400?
APRILIA RS457 is listed at 220 km/h (137 mph) vs 185 km/h (115 mph) for KAWASAKI Z400.
Which has more horsepower, APRILIA RS457 or KAWASAKI Z400?
APRILIA RS457 has 47 hp compared with 45 hp on the KAWASAKI Z400.
Which is lighter, APRILIA RS457 or KAWASAKI Z400?
KAWASAKI Z400 is lighter at 167 kg vs 175 kg for APRILIA RS457.
Which is better, APRILIA RS457 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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