Kawasaki Kx125 vs Suzuki Rm-z 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
Suzuki Rm-z 450
Horsepower (hp)
38 hp
56 hp
Torque (Nm)
29 Nm
51 Nm
Top Speed (km/h)
110 km/h
145 km/h
Weight (kg) — lower is better
88 kg
110 kg
Type
Motocross
Motocross
Horsepower
~38 hp @ 11,500 rpm (2003–2005 final spec)
~56 hp @ 9,500 rpm (estimated for modern 2018+ spec)
Torque
~29 Nm @ 10,500 rpm (estimate for late-model spec)
~51 Nm @ 7,500 rpm (estimated)
Top Speed
~110 km/h (estimate — highly dependent on gearing and conditions)
~145 km/h (estimated; dependent on gearing and terrain)
Weight
~88 kg (wet/curb weight, 2005 model)
110 kg (wet/curb weight)
Fuel
~4.0 L/100km or ~25 km/L (estimate — varies significantly with riding intensity; motocross use is higher consumption)
~5.5 L/100km (estimated; highly variable under race/off-road conditions)
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
Suzuki Rm-z 450
7.8/10
"Fast, rewarding, but only buy one with full service history."
Pros
+Explosive, confidence-inspiring power
+Excellent factory suspension platform
+Strong parts availability
Cons
−Valve maintenance costs add up
−Unforgiving for beginners
−Thirsty on fuel
Top 10 Accessories
Picks that work on either bike.
