Beta Ark 50 K Series vs Derbi GP1 (2004)
Side-by-side spec comparison, pricing, and a plain-English breakdown of how the Beta Ark 50 K Seriesstacks up against the Derbi GP1. Numbers pulled from manufacturer spec sheets — click either bike for the full review.
Spec comparison
| Spec | Beta Ark 50 K Series | Derbi GP1 |
|---|---|---|
| Model year | 2004 | 2004 |
| Price | — | — |
| Engine | 49 cc | 49 cc |
| Fuel capacity | — | 1.9 L |
| Fuel type | petrol | petrol |
| Transmission | Automatic | — |
| Front brakes | Single disc | Single disc |
| Rear brakes | Single disc | Single disc |
| Tires | 130/60-13 / 140/60-13 | 120/70-13 / 130/60-13 |
Beta Ark 50 K Series vs Derbi GP1 — which should you buy?
Picking between the Beta Ark 50 K Series and the Derbi GP1 usually comes down to the numbers you care about most. On paper, the Beta Ark 50 K Series brings its published horsepower, while the Derbi GP1 counters with its own power figure.
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:

