Derbi GP1 50 Racing vs Aprilia Sonic 50 (2009)
Side-by-side spec comparison, pricing, and a plain-English breakdown of how the Derbi GP1 50 Racingstacks up against the Aprilia Sonic 50. Numbers pulled from manufacturer spec sheets — click either bike for the full review.
Spec comparison
| Spec | Derbi GP1 50 Racing | Aprilia Sonic 50 |
|---|---|---|
| Model year | 2009 | 2008 |
| Price | — | — |
| Engine | 49 cc | 49 cc |
| Weight | 103 kg | 73 kg |
| Seat height | 33 mm | 30 mm |
| Fuel capacity | 2.1 L | 2.1 L |
| Fuel type | petrol | petrol |
| Transmission | Automatic | Automatic |
| Front brakes | Single disc | Single disc. caliper with two opposing Ø 32 mm pistons |
| Rear brakes | Single disc | Expanding brake (drum brake) |
| Tires | 120/70-14 / 140/60-14 | 100/90-10 / 100/90-10 |
Derbi GP1 50 Racing vs Aprilia Sonic 50 — which should you buy?
Picking between the Derbi GP1 50 Racing and the Aprilia Sonic 50 usually comes down to the numbers you care about most. On paper, the Derbi GP1 50 Racing brings its published horsepower in a 103 kg package, while the Aprilia Sonic 50 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: