Ktm Duke 640 vs Ktm 690 Duke
Side-by-side comparison for used motorcycle buyers
Ktm Duke 640 vs Ktm 690 Duke. Ktm Duke 640: 55 hp @ 7,000 rpm hp, 148 kg (wet/curb weight) weight, top speed 170 km/h, Motoryk rating 7.5/10. Ktm 690 Duke: 73 hp @ 8,000 rpm hp, 149 kg (wet/curb weight) weight, top speed 175 km/h, Motoryk rating 7.8/10.
Performance at a Glance
Green = winner per metric · Bars are relative to the higher value
Ktm Duke 640
Ktm 690 Duke
Horsepower (hp)
55 hp
73 hp
Torque (Nm)
60 Nm
73 Nm
Top Speed (km/h)
170 km/h
175 km/h
Weight (kg) — lower is better
148 kg
149 kg
Type
Naked
Naked
Horsepower
55 hp @ 7,000 rpm
73 hp @ 8,000 rpm
Torque
60 Nm @ 5,500 rpm
73 Nm @ 6,500 rpm
Top Speed
170 km/h
175 km/h
Weight
148 kg (wet/curb weight)
149 kg (wet/curb weight)
Fuel
5.5–7.0 L/100km (typical real-world average)
4.5–5.5 L/100km (typical real-world average)
Fairing
No
No
Individual Reviews
Ktm Duke 640
7.5/10
"Buy the best example you can find, inspect religiously."
Pros
+Incredible single-cylinder character
+Razor-sharp, lightweight handling
+Strong used parts availability
Cons
−Patchy build quality era
−Expensive dealer maintenance bills
−Vibration fatigues on motorways
Ktm 690 Duke
7.8/10
"Brilliant bike that punishes neglect — buy smart, ride brilliantly."
Pros
+Razor-sharp handling chassis
+Genuinely characterful engine
+Lightweight and flickable
Cons
−Expensive valve service intervals
−Vibration tires you eventually
−Previous owners skip maintenance
Top 10 Accessories
Picks that work on either bike.
