Ktm Sx 125 vs Suzuki Rm-z 450 — which has more power?

Ktm Sx 125 produces ~34 hp @ 11,500 rpm (estimated for modern 2020+ era models); Suzuki Rm-z 450 produces ~56 hp @ 9,500 rpm (estimated for modern 2018+ spec). Suzuki Rm-z 450 wins by 22 hp.

Ktm Sx 125 vs Suzuki Rm-z 450 — which is faster?

Top speed: Ktm Sx 125 ~110 km/h (estimated; top speed varies significantly based on gearing and track conditions), Suzuki Rm-z 450 ~145 km/h (estimated; dependent on gearing and terrain). Suzuki Rm-z 450 is the faster of the two.

Ktm Sx 125 vs Suzuki Rm-z 450 — which is lighter?

Weight: Ktm Sx 125 ~98 kg (wet/curb weight, based on 2020+ models), Suzuki Rm-z 450 110 kg (wet/curb weight). Ktm Sx 125 is lighter by 12 kg.

Ktm Sx 125 vs Suzuki Rm-z 450 — 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), Suzuki Rm-z 450 ~5.5 L/100km (estimated; highly variable under race/off-road conditions). Real-world economy varies by rider weight, traffic, and how hard the throttle gets twisted.

Ktm Sx 125 vs Suzuki Rm-z 450 — which is more reliable?

Motoryk rates Ktm Sx 125 8.5/10 and Suzuki Rm-z 450 7.8/10. Ktm Sx 125 scores higher on the overall verdict. Ktm Sx 125 caveat: You're a beginner or hate wrenching. Suzuki Rm-z 450 caveat: You skip scheduled maintenance or ride infrequently.

Ktm Sx 125 vs Suzuki Rm-z 450 — which is better for beginners?

Ktm Sx 125 is the friendlier choice for a first bike — 34 hp is manageable. The Suzuki Rm-z 450 is better held for a second bike.

Ktm Sx 125 vs Suzuki Rm-z 450 — 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. Suzuki Rm-z 450: 110 kg, 56 hp.

Ktm Sx 125 vs Suzuki Rm-z 450

Side-by-side comparison for used motorcycle buyers

Ktm Sx 125 vs Suzuki Rm-z 450. 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. Suzuki Rm-z 450: ~56 hp @ 9,500 rpm (estimated for modern 2018+ spec) hp, 110 kg (wet/curb weight) weight, top speed ~145 km/h (estimated; dependent on gearing and terrain), Motoryk rating 7.8/10.

Ktm Sx 125

Suzuki Rm-z 450

Performance at a Glance

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

Ktm Sx 125 Suzuki Rm-z 450

Horsepower (hp)

34 hp

56 hp

Torque (Nm)

25 Nm

51 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)

~56 hp @ 9,500 rpm (estimated for modern 2018+ spec)

Torque

~25 Nm @ 10,500 rpm (estimated)

~51 Nm @ 7,500 rpm (estimated)

Top Speed

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

~145 km/h (estimated; dependent on gearing and terrain)

Weight

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

110 kg (wet/curb weight)

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 (estimated; highly variable under race/off-road conditions)

Fairing