Kawasaki Kx 450 vs Yamaha Yz450f — which has more power?

Kawasaki Kx 450 produces ~55 hp @ 9,000 rpm (estimated; Kawasaki does not officially publish power figures — note: dyno results typically range 53–58 hp); Yamaha Yz450f produces Approximately 60–63 hp @ 9,500 rpm (varies by model year; 2020+ models produce near the upper end). Yamaha Yz450f wins by 5 hp.

Kawasaki Kx 450 vs Yamaha Yz450f — which is faster?

Top speed: Kawasaki Kx 450 ~145 km/h (estimated; gearing and terrain dependent — note: best estimate, not manufacturer-specified), Yamaha Yz450f Approximately 145–155 km/h (estimate based on dyno and track testing; not an officially published figure).

Kawasaki Kx 450 vs Yamaha Yz450f — which is lighter?

Weight: Kawasaki Kx 450 110 kg (curb weight, 2023 model), Yamaha Yz450f 110 kg (curb/wet weight, approximate for 2018–2023 models; earlier models slightly heavier).

Kawasaki Kx 450 vs Yamaha Yz450f — which is more reliable?

Motoryk rates Kawasaki Kx 450 8.5/10 and Yamaha Yz450f 8.5/10. Kawasaki Kx 450 caveat: Intermediate riders still building fundamental skills. Yamaha Yz450f caveat: Beginners or riders skipping routine maintenance schedules.

Kawasaki Kx 450 vs Yamaha Yz450f — which is better for beginners?

Neither is a typical first-bike pick — Kawasaki Kx 450 55 hp, Yamaha Yz450f 60 hp. Consider a smaller-displacement bike for licensing year one.

Kawasaki Kx 450 vs Yamaha Yz450f — which should I commute on daily?

Both can commute, but lighter weight and gentler power win in traffic. Kawasaki Kx 450: 110 kg, 55 hp. Yamaha Yz450f: 110 kg, 60 hp.

Kawasaki Kx 450 vs Yamaha Yz450f

Q: Kawasaki Kx 450 vs Yamaha Yz450f — which is more fuel-efficient?

Fuel use: Kawasaki Kx 450 Estimated 6–9 L/100km (note: highly variable depending on riding intensity; off-road/motocross use is not standardized for fuel economy testing), Yamaha Yz450f Estimated 6–8 L/100km under typical motocross/off-road use (note: highly variable depending on riding intensity; no official road consumption figure exists for this competition-focused bike). Real-world economy varies by rider weight, traffic, and how hard the throttle gets twisted.

Side-by-side comparison for used motorcycle buyers

Kawasaki Kx 450 vs Yamaha Yz450f. Kawasaki Kx 450: ~55 hp @ 9,000 rpm (estimated; Kawasaki does not officially publish power figures — note: dyno results typically range 53–58 hp) hp, 110 kg (curb weight, 2023 model) weight, top speed ~145 km/h (estimated; gearing and terrain dependent — note: best estimate, not manufacturer-specified), Motoryk rating 8.5/10. Yamaha Yz450f: Approximately 60–63 hp @ 9,500 rpm (varies by model year; 2020+ models produce near the upper end) hp, 110 kg (curb/wet weight, approximate for 2018–2023 models; earlier models slightly heavier) weight, top speed Approximately 145–155 km/h (estimate based on dyno and track testing; not an officially published figure), Motoryk rating 8.5/10.

Kawasaki Kx 450

Yamaha Yz450f

Performance at a Glance

Green = winner per metric · Bars are relative to the higher value

Kawasaki Kx 450 Yamaha Yz450f

Horsepower (hp)

55 hp

60 hp

Torque (Nm)

52 Nm

53 Nm

Top Speed (km/h)

145 km/h

Weight (kg) — lower is better

110 kg

Type

Motocross

Horsepower

~55 hp @ 9,000 rpm (estimated; Kawasaki does not officially publish power figures — note: dyno results typically range 53–58 hp)

Approximately 60–63 hp @ 9,500 rpm (varies by model year; 2020+ models produce near the upper end)

Torque

~52 Nm @ 7,500 rpm (estimated; official figures not published — note: best estimate based on dyno data)

Approximately 53–55 Nm @ 8,000 rpm (estimate; Yamaha does not officially publish torque figures for this model)

Top Speed

~145 km/h (estimated; gearing and terrain dependent — note: best estimate, not manufacturer-specified)

Approximately 145–155 km/h (estimate based on dyno and track testing; not an officially published figure)

Weight

110 kg (curb weight, 2023 model)

110 kg (curb/wet weight, approximate for 2018–2023 models; earlier models slightly heavier)

Fuel

Estimated 6–9 L/100km (note: highly variable depending on riding intensity; off-road/motocross use is not standardized for fuel economy testing)

Estimated 6–8 L/100km under typical motocross/off-road use (note: highly variable depending on riding intensity; no official road consumption figure exists for this competition-focused bike)

Fairing