Ktm Sx 450 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
Ktm Sx 450
Suzuki Rm-z 450
Horsepower (hp)
63 hp
56 hp
Torque (Nm)
54 Nm
51 Nm
Top Speed (km/h)
145 km/h
145 km/h
Weight (kg) — lower is better
106 kg
110 kg
Type
Motocross
Motocross
Horsepower
~63 hp @ 9,500 rpm (estimated for modern 2020+ generation)
~56 hp @ 9,500 rpm (estimated for modern 2018+ spec)
Torque
~54 Nm @ 7,000 rpm (estimated for modern 2020+ generation)
~51 Nm @ 7,500 rpm (estimated)
Top Speed
~145 km/h (estimated; note: motocross bikes are not optimized for top speed, this is an approximate real-world figure)
~145 km/h (estimated; dependent on gearing and terrain)
Weight
~106 kg (wet/curb weight, varies slightly by model year)
110 kg (wet/curb weight)
Fuel
~7–9 L/100km (estimated; highly variable depending on riding intensity — note: motocross bikes are not typically measured by fuel economy)
~5.5 L/100km (estimated; highly variable under race/off-road conditions)
Fairing
No
No
Individual Reviews
Ktm Sx 450
8.5/10
"Extraordinary machine that ruthlessly punishes neglectful owners and rewards disciplined ones."
Pros
+Best-in-class power delivery
+Exceptional factory-grade suspension
+Lightweight chromoly frame
Cons
−Brutal mandatory maintenance schedule
−Unforgiving for intermediate riders
−Expensive genuine KTM parts
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