Ktm Sx 125 vs Yamaha Yz450f — which has more power?

Ktm Sx 125 produces ~34 hp @ 11,500 rpm (estimated for modern 2020+ era models); 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 26 hp.

Ktm Sx 125 vs Yamaha Yz450f — which is faster?

Top speed: Ktm Sx 125 ~110 km/h (estimated; top speed varies significantly based on gearing and track conditions), 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.

Ktm Sx 125 vs Yamaha Yz450f — which is lighter?

Weight: Ktm Sx 125 ~98 kg (wet/curb weight, based on 2020+ models), Yamaha Yz450f 110 kg (curb/wet weight, approximate for 2018–2023 models; earlier models slightly heavier). Ktm Sx 125 is lighter by 12 kg.

Ktm Sx 125 vs Yamaha Yz450f — which is more reliable?

Motoryk rates Ktm Sx 125 8.5/10 and Yamaha Yz450f 8.5/10. Ktm Sx 125 caveat: You're a beginner or hate wrenching. Yamaha Yz450f caveat: Beginners or riders skipping routine maintenance schedules.

Ktm Sx 125 vs Yamaha Yz450f — which is better for beginners?

Ktm Sx 125 is the friendlier choice for a first bike — 34 hp is manageable. The Yamaha Yz450f is better held for a second bike.

Ktm Sx 125 vs Yamaha Yz450f — 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 Yz450f: 110 kg, 60 hp.

Ktm Sx 125 vs Yamaha Yz450f

Q: Ktm Sx 125 vs Yamaha Yz450f — 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 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

Ktm Sx 125 vs Yamaha Yz450f. 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 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.

Ktm Sx 125

Yamaha Yz450f

Performance at a Glance

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

Ktm Sx 125 Yamaha Yz450f

Horsepower (hp)

34 hp

60 hp

Torque (Nm)

25 Nm

53 Nm

Top Speed (km/h)

110 km/h

145 km/h

Weight (kg) — lower is better

98 kg

110 kg

Type

Motocross

Horsepower

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

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

Torque

~25 Nm @ 10,500 rpm (estimated)

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

Top Speed

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

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

Weight

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

110 kg (curb/wet weight, approximate for 2018–2023 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)

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