Yamaha Yz250f vs Ktm Sx-f 350 — which has more power?

Yamaha Yz250f produces ~40 hp @ 12,500 rpm (estimated for modern 2019+ models; earlier models slightly less); Ktm Sx-f 350 produces ~63 hp @ 10,800 rpm (2023 model estimate). Ktm Sx-f 350 wins by 23 hp.

Yamaha Yz250f vs Ktm Sx-f 350 — which is faster?

Top speed: Yamaha Yz250f ~145 km/h (estimated; not designed for top speed — purpose-built motocross racer), Ktm Sx-f 350 ~175 km/h (estimated; top speed is not a primary design focus for motocross bikes). Ktm Sx-f 350 is the faster of the two.

Yamaha Yz250f vs Ktm Sx-f 350 — which is lighter?

Weight: Yamaha Yz250f ~105 kg (wet/curb weight — 2020+ models; earlier models slightly heavier), Ktm Sx-f 350 101 kg (without fuel, as stated by KTM for recent models; approximately 106 kg wet).

Yamaha Yz250f vs Ktm Sx-f 350 — which is more fuel-efficient?

Fuel use: 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), Ktm Sx-f 350 ~6.0 L/100km (estimate — varies greatly with riding intensity; note: motocross bikes are rarely measured by fuel economy). Real-world economy varies by rider weight, traffic, and how hard the throttle gets twisted.

Yamaha Yz250f vs Ktm Sx-f 350 — which is more reliable?

Motoryk rates Yamaha Yz250f 8.5/10 and Ktm Sx-f 350 8.5/10. Yamaha Yz250f caveat: You want a mystery-history bargain basement deal. Ktm Sx-f 350 caveat: You skip service intervals or ride occasionally.

Yamaha Yz250f vs Ktm Sx-f 350 — which is better for beginners?

Yamaha Yz250f is the friendlier choice for a first bike — 40 hp is manageable. The Ktm Sx-f 350 is better held for a second bike.

Yamaha Yz250f vs Ktm Sx-f 350 — which should I commute on daily?

Both can commute, but lighter weight and gentler power win in traffic. Yamaha Yz250f: 105 kg, 40 hp. Ktm Sx-f 350: 101 kg, 63 hp.

Yamaha Yz250f vs Ktm Sx-f 350

Side-by-side comparison for used motorcycle buyers

Yamaha Yz250f vs Ktm Sx-f 350. 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-f 350: ~63 hp @ 10,800 rpm (2023 model estimate) hp, 101 kg (without fuel, as stated by KTM for recent models; approximately 106 kg wet) weight, top speed ~175 km/h (estimated; top speed is not a primary design focus for motocross bikes), Motoryk rating 8.5/10.

Yamaha Yz250f

Ktm Sx-f 350

Performance at a Glance

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

Yamaha Yz250f Ktm Sx-f 350

Horsepower (hp)

40 hp

63 hp

Torque (Nm)

26 Nm

42 Nm

Top Speed (km/h)

145 km/h

175 km/h

Weight (kg) — lower is better

105 kg

101 kg

Type

Motocross

Horsepower

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

~63 hp @ 10,800 rpm (2023 model estimate)

Torque

~26 Nm @ 10,000 rpm (estimated)

~42 Nm @ 8,500 rpm (2023 model estimate)

Top Speed

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

~175 km/h (estimated; top speed is not a primary design focus for motocross bikes)

Weight

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

101 kg (without fuel, as stated by KTM for recent models; approximately 106 kg wet)

Fuel

~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)

~6.0 L/100km (estimate — varies greatly with riding intensity; note: motocross bikes are rarely measured by fuel economy)

Fairing