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

Yamaha Yz450f produces Approximately 60–63 hp @ 9,500 rpm (varies by model year; 2020+ models produce near the upper end); 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 wins by 5 hp.

Yamaha Yz450f vs Kawasaki Kx 450 — which is faster?

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

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

Fuel use: 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), 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). Real-world economy varies by rider weight, traffic, and how hard the throttle gets twisted.

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

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

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

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

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

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

Yamaha Yz450f vs Kawasaki Kx 450

Q: Yamaha Yz450f vs Kawasaki Kx 450 — which is lighter?

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

Side-by-side comparison for used motorcycle buyers

Yamaha Yz450f vs Kawasaki Kx 450. 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: ~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

Kawasaki Kx 450

Performance at a Glance

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

Yamaha Yz450f Kawasaki Kx 450

Horsepower (hp)

60 hp

55 hp

Torque (Nm)

53 Nm

52 Nm

Top Speed (km/h)

145 km/h

Weight (kg) — lower is better

110 kg

Type

Motocross

Horsepower

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

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

Torque

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

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

Top Speed

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

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

Weight

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

110 kg (curb weight, 2023 model)

Fuel

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)

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

Fairing