Kawasaki Kx125 vs Ktm Sx-f 450
Side-by-side comparison for used motorcycle buyers
Performance at a Glance
Green = winner per metric · Bars are relative to the higher value
Kawasaki Kx125
Ktm Sx-f 450
Horsepower (hp)
38 hp
63 hp
Torque (Nm)
29 Nm
54 Nm
Top Speed (km/h)
110 km/h
175 km/h
Weight (kg) — lower is better
88 kg
101 kg
Type
Motocross
Motocross
Horsepower
~38 hp @ 11,500 rpm (2003–2005 final spec)
~63 hp @ 9,000 rpm (estimated for recent 2022-2024 models; KTM does not officially publish dyno figures)
Torque
~29 Nm @ 10,500 rpm (estimate for late-model spec)
~54 Nm @ 7,000 rpm (estimated for recent models; note: official figures not published by KTM)
Top Speed
~110 km/h (estimate — highly dependent on gearing and conditions)
~175 km/h (estimated; note: varies with gearing and terrain)
Weight
~88 kg (wet/curb weight, 2005 model)
101 kg (wet/curb weight — 2023 model)
Fuel
~4.0 L/100km or ~25 km/L (estimate — varies significantly with riding intensity; motocross use is higher consumption)
~6-9 L/100km (estimated real-world; varies heavily with riding intensity — note: no official figure provided by KTM for off-road race use)
Fairing
No
No
Individual Reviews
Kawasaki Kx125
8.0/10
"A brilliant buy if you inspect carefully and ride hard."
Pros
+Razor-sharp chassis handling
+Lightweight, flickable frame
+Strong parts availability still
Cons
−Punishing if neglected
−Narrow, unforgiving powerband
−Fuel economy is terrible
Ktm Sx-f 450
8.5/10
"A brilliant machine that demands respect, research, and deep pockets."
Pros
+Best-in-class power delivery
+WP suspension genuinely race-spec
+Excellent parts availability
Cons
−Maintenance intervals brutally short
−Expensive rebuild costs
−Unforgiving for beginners
Top 10 Accessories
Picks that work on either bike.
