Ktm Sx 125 vs Yamaha Yz250f — which has more power?

Ktm Sx 125 produces ~34 hp @ 11,500 rpm (estimated for modern 2020+ era models); Yamaha Yz250f produces ~40 hp @ 12,500 rpm (estimated for modern 2019+ models; earlier models slightly less). Yamaha Yz250f wins by 6 hp.

Ktm Sx 125 vs Yamaha Yz250f — which is faster?

Top speed: Ktm Sx 125 ~110 km/h (estimated; top speed varies significantly based on gearing and track conditions), Yamaha Yz250f ~145 km/h (estimated; not designed for top speed — purpose-built motocross racer). Yamaha Yz250f is the faster of the two.

Ktm Sx 125 vs Yamaha Yz250f — which is lighter?

Weight: Ktm Sx 125 ~98 kg (wet/curb weight, based on 2020+ models), Yamaha Yz250f ~105 kg (wet/curb weight — 2020+ models; earlier models slightly heavier). Ktm Sx 125 is lighter by 7 kg.

Ktm Sx 125 vs Yamaha Yz250f — which is more fuel-efficient?

Fuel use: Ktm Sx 125 Estimated 4–6 L/100km (note: varies greatly depending on riding intensity; two-stroke motocross bikes are not typically measured by standard fuel economy metrics), 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.

Ktm Sx 125 vs Yamaha Yz250f — which is more reliable?

Motoryk rates Ktm Sx 125 8.5/10 and Yamaha Yz250f 8.5/10. Ktm Sx 125 caveat: You're a beginner or hate wrenching. Yamaha Yz250f caveat: You want a mystery-history bargain basement deal.

Ktm Sx 125 vs Yamaha Yz250f — which is better for beginners?

Both are reasonable first-bike candidates. Ktm Sx 125: 34 hp. Yamaha Yz250f: 40 hp.

Ktm Sx 125 vs Yamaha Yz250f — which should I commute on daily?

Both can commute, but lighter weight and gentler power win in traffic. Ktm Sx 125: 98 kg, 34 hp. Yamaha Yz250f: 105 kg, 40 hp.

Ktm Sx 125 vs Yamaha Yz250f

Side-by-side comparison for used motorcycle buyers

Ktm Sx 125 vs Yamaha Yz250f. Ktm Sx 125: ~34 hp @ 11,500 rpm (estimated for modern 2020+ era models) hp, ~98 kg (wet/curb weight, based on 2020+ models) weight, top speed ~110 km/h (estimated; top speed varies significantly based on gearing and track conditions), Motoryk rating 8.5/10. 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.

Ktm Sx 125

Yamaha Yz250f

Performance at a Glance

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

Ktm Sx 125 Yamaha Yz250f

Horsepower (hp)

34 hp

40 hp

Torque (Nm)

25 Nm

26 Nm

Top Speed (km/h)

110 km/h

145 km/h

Weight (kg) — lower is better

98 kg

105 kg

Type

Motocross

Horsepower

~34 hp @ 11,500 rpm (estimated for modern 2020+ era models)

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

Torque

~25 Nm @ 10,500 rpm (estimated)

~26 Nm @ 10,000 rpm (estimated)

Top Speed

~110 km/h (estimated; top speed varies significantly based on gearing and track conditions)

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

Weight

~98 kg (wet/curb weight, based on 2020+ models)

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

Fuel

Estimated 4–6 L/100km (note: varies greatly depending on riding intensity; two-stroke motocross bikes are not typically measured by standard fuel economy metrics)

~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