Kawasaki Kx 250 vs Yamaha Yz450f — which has more power?

Kawasaki Kx 250 produces Approximately 40–42 hp @ 13,000 rpm (2020+ 4-stroke model; earlier 2-stroke models varied); 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 20 hp.

Kawasaki Kx 250 vs Yamaha Yz450f — which is faster?

Top speed: Kawasaki Kx 250 Approximately 120–130 km/h (estimate; motocross bikes are not optimized for top speed), Yamaha Yz450f Approximately 145–155 km/h (estimate based on dyno and track testing; not an officially published figure). Yamaha Yz450f is the faster of the two.

Kawasaki Kx 250 vs Yamaha Yz450f — which is lighter?

Weight: Kawasaki Kx 250 110 kg (curb weight, 2020+ model), Yamaha Yz450f 110 kg (curb/wet weight, approximate for 2018–2023 models; earlier models slightly heavier).

Kawasaki Kx 250 vs Yamaha Yz450f — which is more reliable?

Motoryk rates Kawasaki Kx 250 8.2/10 and Yamaha Yz450f 8.5/10. Yamaha Yz450f scores higher on the overall verdict. Kawasaki Kx 250 caveat: You're new to dirt bikes or motocross. Yamaha Yz450f caveat: Beginners or riders skipping routine maintenance schedules.

Kawasaki Kx 250 vs Yamaha Yz450f — which is better for beginners?

Kawasaki Kx 250 is the friendlier choice for a first bike — 40 hp is manageable. The Yamaha Yz450f is better held for a second bike.

Kawasaki Kx 250 vs Yamaha Yz450f — which should I commute on daily?

Both can commute, but lighter weight and gentler power win in traffic. Kawasaki Kx 250: 110 kg, 40 hp. Yamaha Yz450f: 110 kg, 60 hp.

Kawasaki Kx 250 vs Yamaha Yz450f

Q: Kawasaki Kx 250 vs Yamaha Yz450f — which is more fuel-efficient?

Fuel use: Kawasaki Kx 250 Estimated 6–8 L/100km (note: varies greatly depending on riding intensity; off-road/motocross use makes precise figures difficult to standardize), 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 250 vs Yamaha Yz450f. Kawasaki Kx 250: Approximately 40–42 hp @ 13,000 rpm (2020+ 4-stroke model; earlier 2-stroke models varied) hp, 110 kg (curb weight, 2020+ model) weight, top speed Approximately 120–130 km/h (estimate; motocross bikes are not optimized for top speed), Motoryk rating 8.2/10. 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 250

Yamaha Yz450f

Performance at a Glance

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

Kawasaki Kx 250 Yamaha Yz450f

Horsepower (hp)

40 hp

60 hp

Torque (Nm)

28 Nm

53 Nm

Top Speed (km/h)

120 km/h

145 km/h

Weight (kg) — lower is better

110 kg

Type

Motocross

Horsepower

Approximately 40–42 hp @ 13,000 rpm (2020+ 4-stroke model; earlier 2-stroke models varied)

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

Torque

Approximately 28–30 Nm @ 10,500 rpm (2020+ 4-stroke model; estimate)

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

Top Speed

Approximately 120–130 km/h (estimate; motocross bikes are not optimized for top speed)

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

Weight

110 kg (curb weight, 2020+ model)

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

Fuel

Estimated 6–8 L/100km (note: varies greatly depending on riding intensity; off-road/motocross use makes precise figures difficult to standardize)

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