Demak MV 135 vs Chang-Jiang BD 50QT-5 (2020)
Side-by-side spec comparison, pricing, and a plain-English breakdown of how the Demak MV 135stacks up against the Chang-Jiang BD 50QT-5. Numbers pulled from manufacturer spec sheets — click either bike for the full review.
Spec comparison
| Spec | Demak MV 135 | Chang-Jiang BD 50QT-5 |
|---|---|---|
| Model year | 2020 | 2007 |
| Price | — | — |
| Engine | 135 cc | 139 cc |
| Horsepower | 9 hp | 3 hp |
| Weight | 92 kg | 80 kg |
| Fuel capacity | — | 1.1 L |
| Fuel type | petrol | petrol |
| Transmission | 4-speed | — |
| Front brakes | Single disc | Single disc. Hand operation, disc |
| Rear brakes | Expanding brake (drum brake) | Expanding brake (drum brake). Hand operation, drum |
| Tires | 70/90-17 / 89/90-17 | 3.5-10 / 3.5-10 |
Demak MV 135 vs Chang-Jiang BD 50QT-5 — which should you buy?
Picking between the Demak MV 135 and the Chang-Jiang BD 50QT-5 usually comes down to the numbers you care about most. On paper, the Demak MV 135 brings 9 hp in a 92 kg package, while the Chang-Jiang BD 50QT-5 counters with 3 hp at 80 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:

