Lem Lb50 R vs Ktm Sx 125 — which has more power?

Lem Lb50 R produces Estimated 6–8 hp @ 8,000–9,000 rpm (note: estimate; exact figures not widely published); Ktm Sx 125 produces ~34 hp @ 11,500 rpm (estimated for modern 2020+ era models). Ktm Sx 125 wins by 28 hp.

Lem Lb50 R vs Ktm Sx 125 — which is faster?

Top speed: Lem Lb50 R Estimated 65–75 km/h (note: estimate; varies significantly based on gearing and track conditions), Ktm Sx 125 ~110 km/h (estimated; top speed varies significantly based on gearing and track conditions). Ktm Sx 125 is the faster of the two.

Lem Lb50 R vs Ktm Sx 125 — which is lighter?

Weight: Lem Lb50 R Estimated 45–55 kg (note: estimate for wet/curb weight; LEM bikes are known for very lightweight construction), Ktm Sx 125 ~98 kg (wet/curb weight, based on 2020+ models). Lem Lb50 R is lighter by 53 kg.

Lem Lb50 R vs Ktm Sx 125 — which is more reliable?

Motoryk rates Lem Lb50 R 6.0/10 and Ktm Sx 125 8.5/10. Ktm Sx 125 scores higher on the overall verdict. Lem Lb50 R caveat: You need reliability beyond city limits. Ktm Sx 125 caveat: You're a beginner or hate wrenching.

Lem Lb50 R vs Ktm Sx 125 — which is better for beginners?

Both are reasonable first-bike candidates. Lem Lb50 R: 6 hp. Ktm Sx 125: 34 hp.

Lem Lb50 R vs Ktm Sx 125 — which should I commute on daily?

Both can commute, but lighter weight and gentler power win in traffic. Lem Lb50 R: 45 kg, 6 hp. Ktm Sx 125: 98 kg, 34 hp.

Lem Lb50 R vs Ktm Sx 125

Q: Lem Lb50 R vs Ktm Sx 125 — which is more fuel-efficient?

Fuel use: Lem Lb50 R Estimated 2.0–2.5 L/100km (note: estimate, as official figures are not widely published for this competition model), 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). Real-world economy varies by rider weight, traffic, and how hard the throttle gets twisted.

Side-by-side comparison for used motorcycle buyers

Lem Lb50 R vs Ktm Sx 125. Lem Lb50 R: Estimated 6–8 hp @ 8,000–9,000 rpm (note: estimate; exact figures not widely published) hp, Estimated 45–55 kg (note: estimate for wet/curb weight; LEM bikes are known for very lightweight construction) weight, top speed Estimated 65–75 km/h (note: estimate; varies significantly based on gearing and track conditions), Motoryk rating 6.0/10. 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.

Lem Lb50 R

Ktm Sx 125

Performance at a Glance

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

Lem Lb50 R Ktm Sx 125

Horsepower (hp)

6 hp

34 hp

Torque (Nm)

6 Nm

25 Nm

Top Speed (km/h)

65 km/h

110 km/h

Weight (kg) — lower is better

45 kg

98 kg

Type

Motocross

Horsepower

Estimated 6–8 hp @ 8,000–9,000 rpm (note: estimate; exact figures not widely published)

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

Torque

Estimated 6–7 Nm @ 7,000 rpm (note: estimate; official figures not widely available)

~25 Nm @ 10,500 rpm (estimated)

Top Speed

Estimated 65–75 km/h (note: estimate; varies significantly based on gearing and track conditions)

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

Weight

Estimated 45–55 kg (note: estimate for wet/curb weight; LEM bikes are known for very lightweight construction)

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

Fuel

Estimated 2.0–2.5 L/100km (note: estimate, as official figures are not widely published for this competition model)

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)

Fairing