Aprilia Sr 50 vs Kymco Ak 550
Side-by-side comparison for used motorcycle buyers
Aprilia Sr 50 vs Kymco Ak 550. Aprilia Sr 50: ~4 hp @ 7,500 rpm (restricted; note: earlier two-stroke variants produced up to ~6.7 hp unrestricted) hp, ~105 kg (wet/curb weight; varies slightly by generation) weight, top speed 45 km/h (restricted, as legally required in most EU markets; de-restricted can reach ~75 km/h), Motoryk rating 7.0/10. Kymco Ak 550: 53 hp @ 7,500 rpm hp, 228 kg (wet/curb weight) weight, top speed 170 km/h, Motoryk rating 7.5/10.
Performance at a Glance
Green = winner per metric · Bars are relative to the higher value
Aprilia Sr 50
Kymco Ak 550
Horsepower (hp)
4 hp
53 hp
Torque (Nm)
4 Nm
53 Nm
Top Speed (km/h)
45 km/h
170 km/h
Weight (kg) — lower is better
105 kg
228 kg
Type
Scooter
Scooter
Horsepower
~4 hp @ 7,500 rpm (restricted; note: earlier two-stroke variants produced up to ~6.7 hp unrestricted)
53 hp @ 7,500 rpm
Torque
~4 Nm @ 6,000 rpm (estimated; varies by generation and engine type)
53 Nm @ 6,000 rpm
Top Speed
45 km/h (restricted, as legally required in most EU markets; de-restricted can reach ~75 km/h)
170 km/h
Weight
~105 kg (wet/curb weight; varies slightly by generation)
228 kg (wet/curb weight)
Fuel
2.0–2.5 L/100km (approximately 40–50 km/L, typical real-world average for 50cc scooter)
4.5 L/100km (approximately 22 km/L)
Fairing
Yes
Yes
Individual Reviews
Aprilia Sr 50
7.0/10
"Buy it clean or budget hard for immediate mechanical work."
Pros
+Razor-sharp Italian styling
+Excellent suspension setup
+Strong parts availability
Cons
−Teenage abuse almost guaranteed
−Variator wears quickly
−Carb jetting notoriously temperamental
Kymco Ak 550
7.5/10
"Serious scooter that deserves more respect than it gets."
Pros
+Strong parallel-twin performance
+Premium suspension setup
+Excellent value used
Cons
−Thin dealer/parts network
−Resale value drops sharply
−TFT display reliability concerns
Top 10 Accessories
Picks that work on either bike.
