UM X-Peed 50R vs Derbi Atlantis Bullet (2007)
Side-by-side spec comparison, pricing, and a plain-English breakdown of how the UM X-Peed 50Rstacks up against the Derbi Atlantis Bullet. Numbers pulled from manufacturer spec sheets — click either bike for the full review.
Spec comparison
| Spec | UM X-Peed 50R | Derbi Atlantis Bullet |
|---|---|---|
| Model year | 2007 | 2006 |
| Price | $1,849 | — |
| Engine | 49 cc | 50 cc |
| Seat height | 31 mm | — |
| Fuel capacity | — | 1.9 L |
| Fuel type | petrol | petrol |
| Transmission | Automatic | 6-speed |
| Front brakes | Single disc. Vented brake | Single disc |
| Rear brakes | Expanding brake (drum brake) | Expanding brake (drum brake) |
| Tires | 120/70-12 / 120/70-12 | 120/80-12 / 120/70-12 |
UM X-Peed 50R vs Derbi Atlantis Bullet — which should you buy?
Picking between the UM X-Peed 50R and the Derbi Atlantis Bullet usually comes down to the numbers you care about most. On paper, the UM X-Peed 50R brings its published horsepower, while the Derbi Atlantis Bullet 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: