Aprilia SX 50 vs Ktm 690 Smc R
Side-by-side comparison for used motorcycle buyers
Aprilia SX 50 vs Ktm 690 Smc R. Aprilia SX 50: 3.3 hp @ 5,250 rpm (restricted 50cc class; ~6 hp derestricted) hp, 97 kg (wet weight) weight, top speed 45 km/h (restricted); approx. 80 km/h derestricted. Ktm 690 Smc R: 74 hp @ 8,000 rpm hp, 148 kg (wet/curb weight) weight, top speed ~175 km/h, Motoryk rating 8.0/10.
Performance at a Glance
Green = winner per metric · Bars are relative to the higher value
Aprilia SX 50
Ktm 690 Smc R
Horsepower (hp)
3.3 hp
74 hp
Torque (Nm)
5 Nm
73 Nm
Top Speed (km/h)
45 km/h
175 km/h
Weight (kg) — lower is better
97 kg
148 kg
Type
Supermoto
Supermoto
Horsepower
3.3 hp @ 5,250 rpm (restricted 50cc class; ~6 hp derestricted)
74 hp @ 8,000 rpm
Torque
5 Nm @ 5,000 rpm
73 Nm @ 6,500 rpm
Top Speed
45 km/h (restricted); approx. 80 km/h derestricted
~175 km/h
Weight
97 kg (wet weight)
148 kg (wet/curb weight)
Fuel
3.0 L/100km
4.5–5.5 L/100km (approx. 18–22 km/L typical real-world average)
Fairing
No
No
Individual Reviews
Ktm 690 Smc R
8.0/10
"An absolute weapon that rewards diligent buyers and destroys lazy ones."
Pros
+Insane fun-per-dollar ratio
+Lightweight and incredibly flickable
+Strong torquey single engine
Cons
−Maintenance-hungry, punishes neglect hard
−Crash damage risk very high
−Vibrations fatigue on long hauls
Top 10 Accessories
Picks that work on either bike.




