Kawasaki Kx125 vs Yamaha Yz250f — which has more power?

Kawasaki Kx125 produces ~38 hp @ 11,500 rpm (2003–2005 final spec); Yamaha Yz250f produces ~40 hp @ 12,500 rpm (estimated for modern 2019+ models; earlier models slightly less). Yamaha Yz250f wins by 2 hp.

Kawasaki Kx125 vs Yamaha Yz250f — which is faster?

Top speed: Kawasaki Kx125 ~110 km/h (estimate — highly dependent on gearing and conditions), Yamaha Yz250f ~145 km/h (estimated; not designed for top speed — purpose-built motocross racer). Yamaha Yz250f is the faster of the two.

Kawasaki Kx125 vs Yamaha Yz250f — which is lighter?

Weight: Kawasaki Kx125 ~88 kg (wet/curb weight, 2005 model), Yamaha Yz250f ~105 kg (wet/curb weight — 2020+ models; earlier models slightly heavier). Kawasaki Kx125 is lighter by 17 kg.

Kawasaki Kx125 vs Yamaha Yz250f — which is more reliable?

Motoryk rates Kawasaki Kx125 8.0/10 and Yamaha Yz250f 8.5/10. Yamaha Yz250f scores higher on the overall verdict. Kawasaki Kx125 caveat: Beginners or anyone fearing two-stroke maintenance. Yamaha Yz250f caveat: You want a mystery-history bargain basement deal.

Kawasaki Kx125 vs Yamaha Yz250f — which is better for beginners?

Both are reasonable first-bike candidates. Kawasaki Kx125: 38 hp. Yamaha Yz250f: 40 hp.

Kawasaki Kx125 vs Yamaha Yz250f — which should I commute on daily?

Both can commute, but lighter weight and gentler power win in traffic. Kawasaki Kx125: 88 kg, 38 hp. Yamaha Yz250f: 105 kg, 40 hp.

Kawasaki Kx125 vs Yamaha Yz250f

Q: Kawasaki Kx125 vs Yamaha Yz250f — which is more fuel-efficient?

Fuel use: Kawasaki Kx125 ~4.0 L/100km or ~25 km/L (estimate — varies significantly with riding intensity; motocross use is higher consumption), Yamaha Yz250f ~5.5 L/100km / ~18 km/L (estimated; varies significantly with riding intensity — note: off-road/motocross use makes precise figures difficult to pin down). Real-world economy varies by rider weight, traffic, and how hard the throttle gets twisted.

Side-by-side comparison for used motorcycle buyers

Kawasaki Kx125 vs Yamaha Yz250f. Kawasaki Kx125: ~38 hp @ 11,500 rpm (2003–2005 final spec) hp, ~88 kg (wet/curb weight, 2005 model) weight, top speed ~110 km/h (estimate — highly dependent on gearing and conditions), Motoryk rating 8.0/10. Yamaha Yz250f: ~40 hp @ 12,500 rpm (estimated for modern 2019+ models; earlier models slightly less) hp, ~105 kg (wet/curb weight — 2020+ models; earlier models slightly heavier) weight, top speed ~145 km/h (estimated; not designed for top speed — purpose-built motocross racer), Motoryk rating 8.5/10.

Kawasaki Kx125

Yamaha Yz250f

Performance at a Glance

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

Kawasaki Kx125 Yamaha Yz250f

Horsepower (hp)

38 hp

40 hp

Torque (Nm)

29 Nm

26 Nm

Top Speed (km/h)

110 km/h

145 km/h

Weight (kg) — lower is better

88 kg

105 kg

Type

Motocross

Horsepower

~38 hp @ 11,500 rpm (2003–2005 final spec)

~40 hp @ 12,500 rpm (estimated for modern 2019+ models; earlier models slightly less)

Torque

~29 Nm @ 10,500 rpm (estimate for late-model spec)

~26 Nm @ 10,000 rpm (estimated)

Top Speed

~110 km/h (estimate — highly dependent on gearing and conditions)

~145 km/h (estimated; not designed for top speed — purpose-built motocross racer)

Weight

~88 kg (wet/curb weight, 2005 model)

~105 kg (wet/curb weight — 2020+ models; earlier models slightly heavier)

Fuel

~4.0 L/100km or ~25 km/L (estimate — varies significantly with riding intensity; motocross use is higher consumption)

~5.5 L/100km / ~18 km/L (estimated; varies significantly with riding intensity — note: off-road/motocross use makes precise figures difficult to pin down)

Fairing