Rieju RR Castrol vs Derbi Supermotard X-treme (2005)
Side-by-side spec comparison, pricing, and a plain-English breakdown of how the Rieju RR Castrolstacks up against the Derbi Supermotard X-treme. Numbers pulled from manufacturer spec sheets — click either bike for the full review.
Spec comparison
| Spec | Rieju RR Castrol | Derbi Supermotard X-treme |
|---|---|---|
| Model year | 2005 | 2005 |
| Price | — | — |
| Engine | 50 cc | 50 cc |
| Horsepower | 10 hp | — |
| Fuel capacity | 1.6 L | 1.9 L |
| Fuel type | petrol | petrol |
| Transmission | 6-speed | 6-speed |
| Front brakes | Single disc. Double piston | Single disc |
| Rear brakes | Single disc | Single disc |
| Tires | 80/90-21 / 110/80-18 | 100/80-17 / 130/80-17 |
Rieju RR Castrol vs Derbi Supermotard X-treme — which should you buy?
Picking between the Rieju RR Castrol and the Derbi Supermotard X-treme usually comes down to the numbers you care about most. On paper, the Rieju RR Castrol brings 10 hp, while the Derbi Supermotard X-treme 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:

