Ktm Duke 640 vs Yamaha Fz25
Side-by-side comparison for used motorcycle buyers
Ktm Duke 640 vs Yamaha Fz25. 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. Yamaha Fz25: 20.9 hp @ 8,000 rpm hp, 153 kg (wet/curb weight) weight, top speed 130 km/h, Motoryk rating 7.5/10.
Performance at a Glance
Green = winner per metric · Bars are relative to the higher value
Ktm Duke 640
Yamaha Fz25
Horsepower (hp)
55 hp
20.9 hp
Torque (Nm)
60 Nm
20.1 Nm
Top Speed (km/h)
170 km/h
130 km/h
Weight (kg) — lower is better
148 kg
153 kg
Type
Naked
Naked
Horsepower
55 hp @ 7,000 rpm
20.9 hp @ 8,000 rpm
Torque
60 Nm @ 5,500 rpm
20.1 Nm @ 6,000 rpm
Top Speed
170 km/h
130 km/h
Weight
148 kg (wet/curb weight)
153 kg (wet/curb weight)
Fuel
5.5–7.0 L/100km (typical real-world average)
3.5 L/100km or approximately 28 km/L (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
Yamaha Fz25
7.5/10
"A genuinely solid commuter that rewards patient, informed buyers."
Pros
+Reliable fuel-injected engine
+Strong resale value retention
+Low running costs
Cons
−Vibes above 7,000rpm
−Rear suspension often neglected
−Highway cruising feels strained
Top 10 Accessories
Picks that work on either bike.
