Adly Thunder Bike 50 vs Aprilia Sonic 50 GP (2008)

Side-by-side spec comparison, pricing, and a plain-English breakdown of how the Adly Thunder Bike 50stacks up against the Aprilia Sonic 50 GP. Numbers pulled from manufacturer spec sheets — click either bike for the full review.

Spec comparison

SpecAdly Thunder Bike 50Aprilia Sonic 50 GP
Model year20082008
Price
Engine49 cc49 cc
Horsepower4 hp
Torque1 Nm
Weight77 kg73 kg
Seat height30 mm
Fuel capacity2.1 L
Fuel typepetrolpetrol
TransmissionAutomaticAutomatic
Front brakesDouble discSingle disc. caliper with two opposing Ø 32 mm pistons
Rear brakesExpanding brake (drum brake)Expanding brake (drum brake)
Tires120/70-12 / 120/70-12 100/90-10 / 100/90-10

Adly Thunder Bike 50 vs Aprilia Sonic 50 GP — which should you buy?

Picking between the Adly Thunder Bike 50 and the Aprilia Sonic 50 GP usually comes down to the numbers you care about most. On paper, the Adly Thunder Bike 50 brings 4 hp in a 77 kg package, while the Aprilia Sonic 50 GP counters with its own power figure at 73 kg.

Our spec tables above highlight the winning number on each line. For the full rider-focused reviews including real-world fuel economy, service costs and available colors, click into either bike: