Yamaha RD 125 DX vs Vespa Monthlery (1978)
Side-by-side spec comparison, pricing, and a plain-English breakdown of how the Yamaha RD 125 DXstacks up against the Vespa Monthlery. Numbers pulled from manufacturer spec sheets — click either bike for the full review.
Spec comparison
| Spec | Yamaha RD 125 DX | Vespa Monthlery |
|---|---|---|
| Model year | 1978 | 1950 |
| Price | — | — |
| Engine | 125 cc | 125 cc |
| Horsepower | 17 hp | — |
| Fuel type | petrol | petrol |
| Transmission | 5-speed | — |
| Front brakes | — | Expanding brake (drum brake) |
| Rear brakes | — | Expanding brake (drum brake) |
| Tires | — | 3-10 / 3-10 |
Yamaha RD 125 DX vs Vespa Monthlery — which should you buy?
Picking between the Yamaha RD 125 DX and the Vespa Monthlery usually comes down to the numbers you care about most. On paper, the Yamaha RD 125 DX brings 17 hp, while the Vespa Monthlery 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:

