KSR Sirion 50 4T vs Derbi Variant Sport 50 2T (2017)
Side-by-side spec comparison, pricing, and a plain-English breakdown of how the KSR Sirion 50 4Tstacks up against the Derbi Variant Sport 50 2T. Numbers pulled from manufacturer spec sheets — click either bike for the full review.
Spec comparison
| Spec | KSR Sirion 50 4T | Derbi Variant Sport 50 2T |
|---|---|---|
| Model year | 2017 | 2017 |
| Price | — | $1,829 |
| Engine | 49 cc | 49 cc |
| Horsepower | 4 hp | — |
| Weight | 92 kg | — |
| Seat height | — | 31 mm |
| Fuel capacity | 1.3 L | 1.9 L |
| Fuel type | petrol | petrol |
| Transmission | Automatic | Automatic |
| Front brakes | Single disc | Single disc |
| Rear brakes | Expanding brake (drum brake) | Expanding brake (drum brake) |
| Tires | — | 120/70-14 / 120/70-14 |
KSR Sirion 50 4T vs Derbi Variant Sport 50 2T — which should you buy?
Picking between the KSR Sirion 50 4T and the Derbi Variant Sport 50 2T usually comes down to the numbers you care about most. On paper, the KSR Sirion 50 4T brings 4 hp in a 92 kg package, while the Derbi Variant Sport 50 2T 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:

